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112results about How to "Suppression of speed fluctuations" patented technology
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Compressor torque compensation method and apparatus, and air conditioner
ActiveCN106026818ASuppression of speed fluctuationsElectronic commutation motor controlVector control systemsPeak valueVoltage
The invention provides a compressor torque compensation method and apparatus, and an air conditioner. The method comprises the following steps: obtaining a motor rotation speed estimation value omega est; according to a motor rotation speed fluctuation value omega mrip, obtaining a peak torque compensation amount Tp; according to a motor rotation speed instruction value omega ref and the omega est, obtaining a speed regulation peak torque instruction T0; according to the Tp and the T0, obtaining a total peak torque instruction Tt; according to an AC input voltage phase theta g, obtaining a waveform variable Wf, modulating the Tt by use of the Wf to obtain a torque instruction Tref after modulation; according to the Tref and a motor torque coefficient Kt, obtaining a current instruction Iqref of a Q shaft; according to Idref, the Iqref, Id and Iq, obtaining a voltage instruction Vd of a D shaft and a voltage instruction of Vq of the Q shaft; and after performing coordinate transformation on the Vd and the Vq, outputting the transformed Vd and Vq to a motor so as to drive a compressor. According to the invention, fluctuations of the rotation speed of the compressor can be effectively inhibited.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD
Direct-drive permanent magnet fan harmonic wave suppression optimizing method in asymmetric fault of power grid voltage
InactiveCN107453363AEliminate DC bus voltage fluctuationsSlow reaction speedElectronic commutation motor controlVector control systemsControl signalWave shape
The invention discloses direct-drive permanent magnet fan harmonic wave suppression optimizing method in an asymmetric fault of power grid voltage. The method comprises the steps of acquiring abc three-phase static voltage according to abc three-phase current at the motor side; extracting harmonic current by 5-7 times according to the abc three-phase current at the motor side, performing harmonic current suppression, and acquiring abc three-phase compensation voltage; adding the abc three-phase static voltage and the abc three-phase compensation voltage for obtaining a control signal; performing SVPWM modulation on the control signal for obtaining a PWM wave, and controlling an inverter switch of the direct-driven permanent magnet fan through the PWM wave, thereby driving a permanent magnet synchronous generator (PMSG) of the drive-drive permanent magnet fan. According to the method of the invention, through acquiring the abc three-phase compensation voltage after extracting the harmonic current by 5-7 times and performing harmonic current suppression, the abc three-phase static voltage is compensated for generating a control signal, and a harmonic wave component in the motor current on the condition of asymmetric fault can be compensated, thereby greatly reducing influence of DC bus voltage to a motor-side current transformer, improving waveform of the motor current and performing a relatively high harmonic wave suppression effect.
Owner:HUNAN UNIV
Inhibition method for speed fluctuation of permanent magnet synchronous motor
ActiveCN107241034AAchieve high precision controlSuppression of rotational fluctuationsTorque ripple controlVector control systemsMotor speedMomentum
The invention discloses an inhibition method for speed fluctuation of a permanent magnet synchronous motor. The fluctuation quantity of the motor speed under load disturbance is observed through a designed state observer, an equivalent load disturbance is obtained by a designed observer gain and a filter, the equivalent load disturbance acts on a motor system, and a speed fluctuation opposite to the load disturbance is generated by the motor system, so that the speed fluctuation of the motor under load disturbance is neutralized. According to the method, on the basis of a vector control system with id=0, the equivalent input load disturbance is obtained by the designed state observer, the observer gain and the filter, and the speed fluctuation caused by load disturbance is neutralized. The simulation experiment indicates that speed fluctuation can be quickly responded to by the inhibition method for motor speed fluctuation based on an equivalent input disturbance algorithm, rotation fluctuation caused by cyclic load signals, step load signals and irregular load signals can be effectively inhibited, and high-precision control of a speed adjustment system is achieved.
Owner:CETC WUHU DIAMOND AIRCRAFT MFG
Torque pulsation restraining method of low-speed direct-drive permanent magnet motor servo system
ActiveCN110034707AWeaken the deflection forceSuppression of torque rippleTorque ripple controlMotor control for very low speedsLow speedClosed loop
The invention discloses a torque pulsation restraining method of a low-speed direct-drive permanent magnet motor servo system, and belongs to the technical fields of power generation, power transformation and power distribution. According to the method, a virtual cogging torque which is distributed along the circumference of the axis section of the motor and is far larger than the actual cogging torque in amplitude is constructed by utilizing a quadrature axis current. The virtual cogging torque and the actual cogging torque are synthesized, so that only a unique and controllable positioning point is formed in one circle of a motor rotor; and the point is moved at a given speed of the motor, and a virtual damping item which is in negative correlation with the rotating speed error and capable of eliminating inherent oscillation of the rotating speed is introduced, so as to form a rotating speed controller to realize closed-loop control. According to the method disclosed by the invention, when the motor is driven, torque pulsation caused by cogging torque can be inhibited by redundant positioning point elimination and the damping items at low speed and even extremely low speed, the problem of crawling is solved, and a controller integral link causing compensation lag is eliminated, so that the control precision, the response speed and the robustness of the direct-drive servo system are improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Suppression method of pure electric vehicle rotation speed fluctuation
InactiveCN105811827ASuppression of speed fluctuationsElectronic commutation motor controlVector control systemsControl vectorMotor drive
The present invention discloses a suppression method of a pure electric vehicle rotation speed fluctuation. A motor driving system gives a motor expected rotation speed omega<+> and collects the actual rotation speed omega of the motor, and the deviation between the two speeds is inputted into a PI controller, the PI controller outputs an expected torque T<+>[e]. The expected torque T<+>[e] is subjected to gradient amplitude limitation algorithm processing through a gradient amplitude limitation module, an amplitude limitation torque T[e] is obtained and is used as the input of a current calculation module, and expected exciting current i<+>[sd]and torque current i<+>[sq]are obtained. Through a closed loop PI control module, steady-state values are achieved and control voltage u<*>[sd] and u<*>[sq] are outputted, a pulse width modulation module controls a power module to drive the motor to generate stable torque so as to balance the load torque, and the suppression of the rotation speed fluctuation is realized. Based on vector control, the torque given value outputted by the torque deviation PI controller is subjected to gradient amplitude limitation, the torque which is subjected to amplitude limitation is used as an actual torque output value, and thus the suppression of the rotation speed fluctuation is realized.
Owner:SHANGHAI DAJUN TECH
Over-voltage suppression device for generator unit
InactiveCN102801147ASuppression of speed fluctuationsInstantaneous power balanceEmergency protective arrangements for limiting excess voltage/currentVoltage amplitudeMicrocontroller
The invention belongs to generators, and particularly discloses an over-voltage suppression device for a generator unit, which is used for a small internal-combustion generator unit, wherein an alternating-current generator driven by an internal-combustion engine is connected with a plurality of loads. The over-voltage suppression device is characterized in that the alternating-current generator is connected with a voltage sensor, the voltage sensor is connected with a microcontroller through a signal processing unit, and the microcontroller is connected with a standby resistance load via an electronic switch. According to the invention, the voltage sensor is used for detecting the output voltage amplitude and the frequency of the generator in real time, in the case that the microcontroller judges that the load has a large-amplitude sharp reduction according to the fluctuation data of the output voltage amplitude and the frequency of the generator unit, the standby resistance load is instantaneously used via the electronic switch, and the microcontroller is used for supplementing a consecutive power reduction transition area according to the response characteristic of the mechanical governor of the internal-combustion engine, so as to stabilize the fluctuations of the output voltage amplitude and the frequency of the generator. The over-voltage suppression device disclosed by the invention is reasonable in structure, high in energy efficiency, and reliable in performance.
Owner:JINHUA JG TOOLS MFG
Double-three-phase PMSG multi-phase open-circuit fault-tolerant operation control method and system
ActiveCN108988713ASimple structureFlexible useElectronic commutation motor controlVector control systemsPhase currentsLoop control
The invention discloses a dual-three-phase PMSG multi-phase open-circuit fault tolerant operation control method and system. The method and the system adopt a double-layer current control loop to control the current and the rotational speed of each phase of the dual-three-phase PMSG, wherein the inner layer current control loop is used for controlling the direct-axis voltage and the time-varying part of the quadrature-axis voltage, and the outer layer current control loop is used for controlling the direct-axis voltage and the non-time-varying part of the quadrature-axis voltage. Compared withthe asymmetric control method of the prior art, the double-layer current control loop control mode adopted by the invention has simple structure and flexible use, and can realize more complete decoupling of the direct-axis current and the quadrature-axis current of the double-three-phase PMSG under the asymmetric state operation, and better effect of restraining the fluctuation of the torque andthe rotational speed. In addition, the control structure in the double-layer current control loop adopted by the invention can be realized by using a common PI controller, the structure is simple, thecost is low, and the calculation amount is not obviously increased.
Owner:上海寰晟电力能源科技有限公司 +1
Image forming apparatus
InactiveUS20130016984A1Suppression of speed fluctuationsSuppressing fluctuation tensionElectrographic process apparatusImage formationMechanical engineering
Owner:CANON KK
Method for suppressing rotating speed fluctuation of air conditioner compressor
ActiveCN109724330AGuaranteed uptimeReduce cyclical fluctuationsSpace heating and ventilation safety systemsSpace heating and ventilation control systemsMomentumControl theory
The invention discloses a method for suppressing the rotating speed fluctuation of an air conditioner compressor. The method comprises the processes of controlling the compressor according to the real-time angular speed and the torque. The process of controlling the compressor according to the real-time angular speed comprises the steps that an axis error is subjected to filtering treatment, so that the angular speed compensation quantity is obtained; the compensated angular speed output quantity is obtained according to the angular speed compensation quantity; and the real-time angular speedis corrected according to the compensated angular speed output quantity, and the compressor is controlled. The process of controlling the compressor according to the torque comprises the steps that the difference between the target angular speed fluctuation quantity and the feedback angular speed is calculated, so that a first angular speed difference is obtained; the first angular speed difference is inputted into a speed loop regulator, so that the output torque is obtained; the torque compensation quantity is obtained according to the first angular speed difference; and the compensated output torque is obtained according to the torque compensation quantity and the output torque, and the compressor is controlled. By use of the method for suppressing the rotating speed fluctuation of theair conditioner compressor, the effectiveness of suppression of the rotating speed fluctuation of the compressor can be improved.
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Permanent magnet synchronous motor vector control system and method based on H infinite control
InactiveCN110492808AQuick responseImprove anti-interference abilityElectronic commutation motor controlVector control systemsResponse capacitySpeed loop
The invention discloses permanent magnet synchronous motor vector control system and method based on H infinite control. The system comprises a rotating speed loop H-infinity robust controller, a current loop PI controller, a Park inverse transformation module, a space vector pulse width modulation module, an inverter module, a permanent magnet synchronous motor module, a Clark transformation module, a Park transformation module and a rotating speed calculation module. Through the rotating speed loop H-infinity robust controller, when the vector control system of the permanent magnet synchronous motor is subjected to external disturbance input, good quick response capacity and robustness can still be kept, and the influence of parameter perturbation of the permanent magnet synchronous motor on the control system can be effectively restrained.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Frequency modulation parameter optimization method for pumped storage unit
ActiveCN111027178ATo achieve the purpose of frequency modulationImprove control performanceDesign optimisation/simulationFuzzy inferenceControl engineering
The invention discloses a frequency modulation parameter optimization method for a pumped storage unit, and the method comprises the steps: constructing a simulation model of a to-be-modulated pumpedstorage unit, and the simulation model comprising a fractional order PID controller and a fuzzy inference module; applying preset frequency disturbance to the simulation model, and carrying out optimizing through a search algorithm to obtain an optimal frequency modulation parameter of the controller and an optimal membership function of the fuzzy inference module; calculating and controlling thefuzzy inference module to adopt an optimal membership function based on the unit frequency deviation and the differential of the unit frequency deviation under the optimal frequency modulation parameter to obtain the correction amount of the optimal frequency modulation parameter; and correcting the optimal frequency modulation parameter by adopting the correction amount to complete optimization of the frequency modulation parameter. According to the method, the fuzzy fractional order PID controller is introduced, the frequency modulation parameter can be obtained through optimization according to the frequency deviation adjusting algorithm, rotating speed fluctuation can be effectively and rapidly restrained, and the problem that the frequency modulation efficiency is low due to the factthat only the frequency modulation parameter obtained through algorithm optimization is adopted for frequency modulation control is solved.
Owner:HUAZHONG UNIV OF SCI & TECH
Method for restraining rotation speed fluctuation of gas turbine power generation system in case of sudden load change
ActiveCN109763900ASuppression of speed fluctuationsGas turbine plantsJet propulsion plantsDynamoGas turbines
The invention discloses a method for restraining rotation speed fluctuation of a gas turbine power generation system in the case of sudden load change. On the basis of a control strategy of a 'voltageclosed loop and current closed loop' of a generator and a rectification control subsystem of the generator, the fluctuation amount of the rotating speed of an output shaft of the gas turbine is usedas the disturbance quantity to be compensated into voltage closed-loop control of the generator, the direct-current voltage valued output by the generator and the rectification control subsystem of the generator are changed, the variable quantity of the load power is adjusted when load on the gas turbine power generation system is suddenly changed, so that fluctuation of the rotating speed of a unit can be quickly restrained, and then stable operation of the gas turbine power generation system can be realized.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Double-input and single-output constant-rotation-speed control system
InactiveCN104989816AGuaranteed reliabilitySuppression of speed fluctuationsGearing controlMotor speedFreewheel
The invention discloses a double-input and single-output constant-rotation-speed control system. The double-input and single-output constant-rotation-speed control system comprises a mechanical reversing device, a flywheel energy storage device and a pump-controlled motor speed regulating system which are all sequentially connected. The mechanical reversing device comprises a first clutch connected with an input shaft, a first gear meshed with the first clutch, and a second gear meshed with the first gear. The mechanical reversing device further comprises a second clutch connected with the flywheel energy storage device, and a third gear meshed with the second clutch. The first clutch and the second clutch are coaxially connected. The second gear and the third gear are coaxially connected, and a third clutch is arranged between the second gear and the third gear. The mechanical reversing device makes a transmission shaft output torque in the same direction under the conditions of forward rotation and reverse rotation, and therefore reliability is guaranteed under a high-power working condition. The flywheel energy storage device is used for storing and releasing energy so that the power interruption defect can be overcome, and the fluctuation of the rotation speed of a pump-controlled motor can be inhibited as well. Rotation speeds which change constantly are regulated into a stable rotation speed by the pump-controlled motor speed regulation system, and power generation quality is improved.
Owner:AIR FORCE UNIV PLA
Air conditioner compressor rotating speed fluctuation suppression method
ActiveCN109698647AGuaranteed uptimeImprove fluctuation suppression effectTorque ripple controlElectric motor controlMomentumAngular velocity
The invention discloses an air conditioner compressor rotating speed fluctuation suppression method. The method includes processes of controlling a compressor according to real-time angular velocity and moment. The process of controlling the compressor according to the real-time angular velocity includes the following steps: filtering axis errors to obtain an angular velocity compensation amount;obtaining a compensated angular velocity output amount according to the angular velocity compensation amount; and correcting the real-time angular velocity according to the compensated angular velocity output amount and controlling the compressor; The process of controlling the compressor according to the moment includes the following steps: calculating a difference between a target angular velocity fluctuation amount and the compensated angular velocity output amount to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain filtered angular velocity; inputting the filter angular velocity into a speed loop regulator to obtain output moment; obtaining a moment compensation amount according to the first angular velocity difference; and obtainingcompensated output moment according to the moment compensation amount and the output and controlling the compressor. The effectiveness of compressor rotating speed fluctuation suppression can be improved by applying the air conditioner compressor rotating speed fluctuation suppression method.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method and device for inhibiting compressor rotating speed fluctuation
ActiveCN109660172AGuaranteed uptimeImprove fluctuation suppression effectMotor control for motor oscillations dampingAngular velocityPhase-locked loop
The invention discloses a method and device for restraining rotation speed fluctuation of a compressor. The method comprises the steps: acquiring a shaft error reflecting the deviation between an actual position and an estimated position of a compressor rotor; performing filtering processing on the shaft error to obtain at least part of a shaft error compensation quantity after shaft error fluctuation is filtered out; inputting the shaft error compensation quantity as an input quantity into a phase-locked loop regulator of a phase-locked loop for controlling a compressor; and correcting the real-time angular velocity for controlling the compressor by using an output angular velocity of the phase-locked loop regulator, and controlling the compressor according to the corrected real-time angular velocity. The method can improve the effectiveness of compressor rotating speed fluctuation suppression.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Motor, current compensation control method and device thereof, storage medium and processor
ActiveCN112737429AStable high frequency speedImprove reliabilityTorque ripple controlAC motor controlElectric machineControl system
The invention discloses a motor current compensation control method and device, a motor, a storage medium and a processor, and the method comprises the steps: determining a target DC bus voltage of the motor according to a given rotating speed of the motor; obtaining the actual DC bus voltage of the motor; determining whether the actual DC bus voltage is smaller than the target DC bus voltage; if the actual direct-current bus voltage is smaller than the target direct-current bus voltage, calculating compensation current according to a voltage difference value between the target direct-current bus voltage and the actual direct-current bus voltage; and taking the sum of the given current and the compensation current of the motor as the operation current of the motor, and controlling the motor to operate according to the operation current. According to the scheme, the running reliability of the motor is improved by inhibiting the direct-current bus voltage fluctuation phenomenon of a permanent magnet synchronous motor control system without an electrolytic capacitor.
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
Control device of vehicle
ActiveUS20210269012A1Reduce rateRotation speed fluctuationHybrid vehiclesPlural diverse prime-mover propulsion mountingTravel modeInternal combustion engine
A traveling mode setting unit configured to cause a shift to shift to a second traveling mode via a third traveling mode based on a traveling state of the vehicle traveling in the first traveling mode. The internal combustion engine control unit includes a derivation unit configured to derive a second rotational speed of the internal combustion engine at the time of transition from the third traveling mode to the second traveling mode based on a first rotational speed of the internal combustion engine at the time of transition from the first traveling mode to the third traveling mode, the traveling state of the vehicle and the second reduction ratio, and the internal combustion engine control unit is configured to control a third rotational speed of the internal combustion engine in the third traveling mode to be a value between the first rotational speed and the second rotational speed.
Owner:HONDA MOTOR CO LTD
Laser detection device, control method thereof, control device and terminal
ActiveCN113330332AStable speedSuppression of speed fluctuationsElectromagnetic wave reradiationEngineeringMechanical engineering
The invention provides a detection device, a control method of the detection device, a control device and a terminal, which can be applied to the fields of intelligent driving, automatic driving, intelligent manufacturing or surveying and mapping and the like. Besides a laser transceiving module for executing target detection, the detection device is also provided with a reflector and a synchronous transceiving module for realizing a synchronous function. Wherein the reflecting mirror is used for reflecting an emitted light beam from the laser receiving and transmitting module to a detection area and reflecting a reflected light beam from the detection area to the laser receiving and transmitting module. Furthermore, the light beam passing through the reflector is detected through the synchronous transceiving module, high-precision rotation speed measurement and rotation angle measurement of the reflector are realized, the rotation speed of the reflector is adjusted in time, and the detection precision of the detection device is improved. Particularly, in a detection device which is sensitive in cost and high in precision requirement, the cost can be greatly reduced on the premise of ensuring the performance. Specifically, the detection device can be a laser radar.
Owner:HUAWEI TECH CO LTD
Method and device for controlling rotational speed of compressor
ActiveCN109560739AGuaranteed uptimeReduce speed fluctuationElectronic commutation motor controlVector control systemsPhase-locked loop
The invention discloses a method and a device for controlling the rotational speed of a compressor. The method comprises the following steps: obtaining the axis error reflecting the bias of the actualposition and the constructive position of the rotor of the compressor; carrying out filtering processing on the axis error to obtain axis error compensation quantity after at least a part of axis error is filtered; taking the axis error compensation quantity as an input quantity to be put into a phase-locked loop adjuster in a phase-locked loop used for compressor control to obtain the output angular speed of the phase-locked loop adjuster; taking the output angular speed of the phase-locked loop adjuster as an input quantity to be put into a speed ring adjuster in a speed ring used for compressor control to obtain the output torque of the speed ring adjuster; using the output angular speed of the phase-locked loop adjuster to correct real-time angular speed used for compressor control, and controlling the compressor according to the corrected real-time angular speed and the output torque of the speed ring adjuster. By using the method, the rotational speed fluctuation inhibition effectiveness of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for restraining rotating speed fluctuation of single-rotor compressor
ActiveCN109742994ASuppression of speed fluctuationsReduce speed fluctuationMotor parameters estimation/adaptationAC motor angular speed controlMomentumPhase-locked loop
The invention discloses a method for restraining rotating speed fluctuation of a single-rotor compressor. The method comprises the process of controlling the compressor according to the real-time angular speed and the step of controlling the compressor according to the force moment; the process of controlling the compressor according to the real-time angular speed comprises the steps that the axiserror is filtered, and the axis error compensation quantity is obtained; the axis error compensation quantity is input into a phase-locked loop adjuster, and the output angular speed of the phase-locked loop adjuster is obtained; the real-time angular speed is corrected through the output angular speed, and the compressor is controlled according to the corrected real-time angular speed; the process of controlling the compressor according to the force moment comprises the steps that the difference between the target angular speed fluctuation quantity and the output angular speed of the phase-locked loop adjuster is calculated, and a first angular speed difference value is obtained; the first angular speed difference value is filtered, and the filtered angular speed is obtained; the filtered angular speed is input into a speed loop adjuster, and the output force moment is obtained; and the compressor is controlled according to the output force moment. By applying the method, the effectiveness of restraining rotating speed fluctuation of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Motor current determining method and device, air conditioner, storage medium and processor
PendingCN112671294ASuppression of speed fluctuationsGuaranteed uptimeElectronic commutation motor controlVector control systemsCurrent electricElectric machine
The invention discloses a motor current determining method and device, an air conditioner, a storage medium and a processor. The method comprises the steps: determining the phase of a q-axis current compensation amount of a motor; determining a q-axis correction current amplitude of the motor by adopting a cosine wave torque feedforward compensation algorithm; determining a torque feedforward compensation current of the motor according to the q-axis correction current amplitude and the phase of the q-axis current compensation amount; compensating the initial torque current of the motor according to the torque feedforward compensation current to obtain the current of the motor; and controlling the operation of the motor according to the current. According to the scheme, the compressor adaptively adjusts the low-speed fluctuation suppression compensation current value along with the change of the working condition, the rotating speed fluctuation of the compressor in the low-frequency running stage is suppressed, and the running performance of the whole machine is improved.
Owner:GREE ELECTRIC APPLIANCES INC
Method for suppressing speed fluctuation of air conditioner compressor
ActiveCN109713963AGuaranteed uptimeReduce cyclical fluctuationsElectronic commutation motor controlVector control systemsMomentumAngular velocity
The invention discloses a method for suppressing the speed fluctuation of an air conditioner compressor, comprising processes of controlling the compressor according to the real-time angular velocityand the torque. The process of controlling the compressor according to the real-time angular velocity comprises: filtering an axial error to obtain an angular velocity compensation amount; obtaining acompensated angular velocity output according to the angular velocity compensation amount; correcting the real-time angular velocity and controlling the compressor according to the compensated angular velocity output. The process of controlling the compressor according to the torque includes: calculating a difference between a target angular velocity fluctuation amount and a feedback angular velocity to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain a filtered angular velocity; inputting the filtered angular velocity into a speed loop regulator to obtain an output torque; obtaining a torque compensation amount according to the first angular velocity difference; and obtaining the compensated output torque and controlling the compressor according to the torque compensation amount and the output torque. The method can improve the effectiveness of suppressing the speed fluctuation of the compressor.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method and device for restraining rotating speed fluctuation of air conditioner compressor
ActiveCN109672388ASuppression of speed fluctuationsReduce speed fluctuationMotor control for motor oscillations dampingAngular velocityEngineering
The invention discloses a method and a device for restraining the rotating speed fluctuation of an air conditioner compressor. The method comprises the steps of obtaining a shaft error reflecting thedeviation between the actual position and the estimated position of a compressor rotor; carrying out filtering treatment on the shaft error, obtaining a correction shaft error and a corresponding angular velocity compensation dosage thereof, wherein at least one part of the shaft error fluctuation of the correction shaft error is filtered; compensating the angular velocity compensation dosage intothe output angular velocity of a phase-locked loop regulator in a phase-locked loop of the compressor so as to obtain a compensated angular velocity output quantity; extracting the direct current component of the angular velocity compensation quantity, adopting the direct current component and the output angular velocity of the phase-locked loop regulator as input variables, and inputting the input variables into the speed loop regulator of a speed loop for controlling the compressor; according to the compensated angular velocity output quantity, correcting the real-time angular velocity forcontrolling the compressor; and controlling the compressor according to the corrected real-time angular velocity and the output torque of the speed loop regulator. By applying the method, the fluctuation suppression effectiveness of the compressor rotating speed can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method and device of suppressing rotating speed fluctuation of air conditioner compressor
ActiveCN109724323ASuppression of speed fluctuationsReduce speed fluctuationSpace heating and ventilation safety systemsSpace heating and ventilation control systemsDirect currentPhase-locked loop
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Method for suppressing speed fluctuation of single-rotor compressor
ActiveCN109713962BSuppression of speed fluctuationsReduce speed fluctuationElectronic commutation motor controlVector control systemsAngular velocityMechanical engineering
The invention discloses a single-rotor compressor rotation speed fluctuation suppression method, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; The angular velocity compensation amount is compensated to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; the real-time angular velocity is corrected according to the compensated angular velocity output, and the compressor is controlled according to the corrected real-time angular velocity; according to the torque The process of controlling the compressor includes: calculating the difference between the target angular velocity fluctuation and the output angular velocity of the phase-locked loop regulator to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain a filtered angular velocity; The filtered angular velocity is input to a speed loop regulator to obtain an output torque; the compressor is controlled according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for Suppressing Speed Fluctuation of Single Rotor Compressor
ActiveCN109462354BSuppression of speed fluctuationsReduce speed fluctuationMotor parameters estimation/adaptationAC motor angular speed controlAngular velocityEngineering
The invention discloses a method for suppressing the rotation speed fluctuation of a single-rotor compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain angular velocity compensation amount; compensate the angular velocity compensation amount to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; correct the real-time angular velocity according to the compensated angular velocity output, and control the compressor according to the corrected real-time angular velocity The process of controlling the compressor according to the torque includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filtering the first angular velocity difference to obtain the filtered angular velocity; Input to the speed loop regulator to obtain the output torque; control the compressor according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for Controlling Speed Fluctuation of Single Rotor Compressor
ActiveCN109698645BGuaranteed uptimeImprove effectivenessTorque ripple controlElectric motor controlAngular velocityEngineering
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Air conditioner compressor speed fluctuation suppression method and device
ActiveCN109724333BGuaranteed uptimeImprove controlSpace heating and ventilation safety systemsSpace heating and ventilation control systemsAngular velocityEngineering
The invention discloses a method and device for suppressing rotation speed fluctuations of an air conditioner compressor. The method includes: obtaining an axis error reflecting the deviation between the actual position and the estimated position of the compressor rotor; filtering the axis error to obtain at least The corrected axis error and its corresponding angular velocity compensation amount after filtering out some axis error fluctuations; the angular velocity compensation amount is compensated to the output angular velocity of the phase-locked loop regulator in the compressor phase-locked loop, and the compensated angular velocity output amount is obtained; at the same time , extracting the DC component of the angular velocity compensation amount, and inputting the DC component and the compensated angular velocity output into the speed loop regulator in the compressor control speed loop; according to the compensated angular velocity The output quantity corrects the real-time angular velocity used for compressor control, and controls the compressor according to the corrected real-time angular velocity and the output torque of the speed loop regulator. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Motor and current compensation control method, device, storage medium and processor thereof
ActiveCN112737429BStable high frequency speedImprove reliabilityTorque ripple controlAC motor controlElectric machineControl system
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
A Torque Ripple Suppression Method for Low Speed Direct Drive Permanent Magnet Motor Servo System
ActiveCN110034707BWeaken the deflection forceSuppression of torque rippleTorque ripple controlMotor control for very low speedsLow speedLoop control
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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