957 results about "Power conditioner" patented technology

A photovoltaic power generating device comprising a current collecting box side detector for detecting a ground fault in each of the photovoltaic strings, a switch disposed in correspondence to each of the photovoltaic strings and interposed between the photovoltaic string and a connecting cable, a current collecting box including a control unit providing an on / off control of the switch according to the detection result from the detector, a detector for detecting a ground fault in a connecting cable between the current collecting box and the power conditioner, a switch interposed between the connecting cable and the inverter, and a power conditioner having a control unit providing an on / off control of the switch according to the detection result from the detector.

A bidirectional active power conditioner includes a DC side, a bidirectional DC / DC power converter, a DC / AC inverter and an AC side. The DC side electrically connects with a DC source while the AC side electrically connects with a load and an AC source. The bidirectional DC / DC power converter is controlled via high-frequency pulse width modulation (PWM) switching so as to generate a predetermined DC voltage or DC current while the DC / AC inverter is controlled to convert the predetermined DC voltage or DC current into a predetermined AC voltage or AC current.

An electronic power control circuit includes a power conditioner circuit (120, 130) having a charging input line (116), a battery-related line (133) of the power conditioner circuit (120, 130), and a power voltage output line (137); and an anti-crash loop mechanism (170) coupled to the battery-related line (133) and to the power voltage output line (137) of the power conditioner circuit (120, 130), the anti-crash loop mechanism (170) having a control output line (172, PWGOOD) to be selectively active and inactive in response to voltage levels over time on the battery-related line (133) and on the power voltage output line (137) of the power conditioner circuit (120, 130).

This invention relates to a transmit / receive module for a high power Active Phased Array Antenna system operating in L-band based upon a combination of Hybrid Microwave Integrated Circuit (MIC) as well as Monolithic Microwave Integrated Circuit (MMIC) technology. The transmit / receive module includes a power monitoring means, transmitter protector means, and a receiver protector means. The module comprises a signal transmit chain incorporating power conditioner and a signal receive chain incorporating control electronics and bias- sequencer modulator. The transmit chain has switching means for switching the module to transmit mode which is connected to the transmit amplifier chain through a shared digital phase shifter. The amplified signals from the transmit amplifier chain are conveyed to a duplexer means. In receive mode, the receive chain receives signal through drop-in circulator and high power switch and comprises of high power limiter, low noise amplifier means, and a digital attenuator means connected to the shared digital phase shifter through T / R switch means. Electronic means are connected through integrated control electronic., bias sequencer modulator and power conditioner for controlling the operation of the device.

A power generating system (100) for a downhole operation (10) having production tubing (40) in a wellbore (12) includes a magnetized rotation member (110) coupled to the wellbore (12) within the production tubing (40), the rotation member (110) having a passageway (112) through which objects, such as tools, may be passed within the production tubing (40). Support braces (170, 172) couple the rotation member (110) to the production tubing (40) and allow the rotation member (110) to rotate within the production tubing (40). Magnetic pickups (150, 152) are predisposed about the rotation member (110) within the wellbore (12) and a power conditioner (200) is provided to receive currents from the magnetic pickups (150, 152) for storage and future use. The rotation member (110) rotates due to the flow of fluid, such as crude oil, through the production tubing (40) which causes the rotation member (110) to rotate and induce a magnetic field on the magnetic pickups (150, 152) such that electrical energy is transmitted to the power conditioner (200), the power conditioner able to store, rectify, and deliver power to any one of several electronic components within the wellbore (12).

A technique for controlling a power supply with power supply control element with a tap element. In one embodiment, a power supply regulator includes a power transistor having first, second, third and fourth terminals. A control circuit is included, which is coupled to the third and fourth terminals of the power transistor. The power transistor is configured to switch a current between the first and second terminals in response a control signal received from the control circuit at the third terminal. A voltage between the fourth and second terminals of the power transistor is substantially proportional to a current flowing between the first and second terminals when a voltage between the first and second terminals is less than a pinch off voltage. The voltage between the fourth and second terminals of the power transistor is substantially constant and less than the voltage between the first and second terminals when the voltage between the first and second terminals is greater than the pinch off voltage.

During charging operations of a power storage unit, a voltage converting unit converts a voltage received from direct-current buses and supplies it to power storage unit, whereas during discharging operations of power storage unit, voltage converting unit converts a voltage received from power storage unit and outputs it to direct-current buses. In voltage converting unit, a side connected to power storage unit and a side connected to direct-current buses are insulated from each other. As a result of this, if a ground failure occurs in power storage unit, its effects on an inverter circuit, a commercial power system and the like are prevented. A grid-connected power conditioner with high safety can thus be obtained.

The invention provides an air conditioner defrosting control method and an air conditioner. The method comprises the following step: after the current defrosting operation period of the air conditioner finishes, calculating and determining the heating operation time and defrosting time of the air conditioner of the next period on the basis of the indoor coil pipe temperature drop rate: when the indoor coil pipe temperature drop rate is high, controlling the heating operation time of the air conditioner of the next period to be less than or equal to the heating operation time of the air conditioner of the current period, and controlling the defrosting time of the next period to be greater than the defrosting time of the current period; and when the indoor coil pipe temperature drop rate is low, controlling the heating operation time of the air conditioner of the next period to be greater than the heating operation time of the air conditioner of the current period, and controlling the defrosting time of the next period to be less than or equal to the defrosting time of the current period. The heating operation time and defrosting time of the air conditioner of the next period are adjusted on the basis of the indoor coil pipe temperature drop rate when the operation of the current period finishes, thereby implementing dynamic adjustment on the heating and defrosting, and solving the technical problem of unclean defrosting or false defrosting when the defrosting is controlled on the basis of the indoor coil pipe temperature.

A self-powered tire revolution counter includes a motion sensitive power generation mechanism, a power conditioner, a pulse detector, a microcontroller, and, optionally, a radio frequency (RF) transmitting device. In one exemplary embodiment, the power generation mechanism corresponds to a piezoelectric patch that, during movement, provides both operating electrical power and pulsed signals indicative of tire rotation. The power conditioner receives a generator signal from the power generation mechanism and produces a conditioned output voltage that can be used to power associated electronic devices, including the microcontroller. The pulse detector receives the generator signal and produces a detection signal whenever the generator signal meets a predetermined condition. The microcontroller is programmed to determine current and lifetime-accumulated values of selected pulse indications in the detection signal that meet predetermined criteria. Data corresponding to tire environment related parameters such as temperature, pressure, tire deflection, and / or vehicle speed may be stored in the microcontroller at times during tire rotation as power is supplied from the power generation mechanism through the power conditioner. Additional data may be supplied to the microcontroller directly from an external source and read from the microcontroller either by direct electrical contact or via selective RF transmission.

A Solid State Power Amplifier (SSPA) for powering a single element of a multi-element antenna, the SSPA comprising:an RF amplifier, having a signal amplifying path that includes preamplifier, driver amplifier and a power output stage;an Electronic Power Conditioner (EPC) for providing a variable value of DC voltage for powering the power output stage of the RF amplifier;a control ASIC for receiving an input power signal of the RF amplifier for providing a voltage control signal to the EPC to determine the value of the DC voltage, the control ASIC addressing an EEPROM holding a collection of control words that define output values of a control output signal for varying values of said input power, such that the value of the DC voltage to the power output stage is varied so as to control the gain compression of the RF amplifier for varying values of input power in order to maintain constant amplifier linearity.

The invention relates to the technical field of air conditioners, in particular to a control method and system for an air conditioner. The problem that the rapid cooling / heating effect is poor due tothe long frequency rising time in a starting and frequency rising control method of an existing air conditioner is solved. The control method comprises the steps that a compressor of the air conditioner is started, and grading and continuous frequency rising is conducted on the compressor according to a plurality of set speeds. By means of the control method, through grading and continuous frequency rising according to the multiple set speeds after the compressor is started, it can be ensured that normal oil return is conducted on the compressor while the frequency rising time of the compressor is sharply shortened, the purpose of rapid cooling / heating is achieved, the comfortableness of the air conditioner is improved, and the user experience is improved.

The invention discloses a method and device for adjusting the running frequency of an air conditioning compressor as well as an air conditioner. The method comprises the following steps: during the process of frequencyincreasing, determining afrequencyincreasing speed according to the frequencydifferencevalue of the preset target running frequency and the current running frequency, and increasingthe current running frequency at the frequencyincreasing speed; during the process of frequency reduction, judging whether the cause offrequency reduction is protective frequencyreduction or non-protective frequencyreduction, if the cause of the frequency reduction is protective frequencyreduction, running according to the preset frequency reduction speed, if the cause of the frequency reduction is non-protective frequencyreduction, determining a frequency reduction speed according to the temperature difference valueof the set temperature of the compressor and the indoor environment temperature, and reducing the current running frequency at the frequencyreduction speed. By adopting the method and the device provided by theinvention, that the variable-frequency air conditioner is controlled at different speeds according to frequency ranges during the frequency increasingand reduction processes is realized, that the frequency increasing and frequency reduction are performed more stably is ensured, and fluctuation of noises is reduced, therefore, the effect of increasingthe comfortof the air conditioner is achieved.

The invention provides an air conditioner electric energy control device and an air conditioner electric energy management method. The air conditioner electric energy control device comprises a metering chip control module, so that current and voltage information of an air conditioner complete machine can be sampled, and a real-time power signal of the air conditioner complete machine is output to the control module to monitor the power utilization amount of the air conditioner complete machine at any time; an air conditioner controller is provided with a special metering IC (Integrated Circuit); and the metering IC samples information including current, voltage and the like of the complete machine to output information including the real-time power signal of the complete machine and the like; an air controller main controller automatically distributes power and adjusts operation parameters of an air conditioner through receiving, analyzing and responding power signals, so that the aims of controlling the power consumption of the air conditioner and saving electric energy are achieved and the controller can accurately measure the electric power utilization condition of the complete machine; and real-time power information of the current complete machine is collected and a relative intelligent energy-saving mode is formulated through software analysis and design to manage electric energy of the air conditioner complete machine, so that a set of complete electric energy intelligent management scheme is formed.

This invention relates to a transmit and receive module for active phased array antenna system based upon a combination of hybrid microwave integrated circuit (MIC) as well as monolithic microwave integrated circuit (MMIC) technology. The module comprises a signal transmit chain having switching means (03) for switching the module to transmittance mode. Means are provided for applying pulsed RF signal to the said module from array manifold. A phase shifter (01) is connected to a digital attenuator (02) and the output of the attenuator (02) is connected to a power amplifier (04). The amplified signals from amplifier (04) are conveyed to a duplexer means (05) connected to said power amplifier (04) and for routing back the received signal through a receiver protector (06) and low noise amplifier means (07). Electronic means are connected to a power conditioner for controlling the operation of the device.

A system for co-generation of electricity combining a hydrocarbon catalytic reformer, an SOFC assembly and a generator driven by a gas turbine. The fuel cell assembly recycles a high percentage of anode exhaust gas into the reformer. Oxygen for reforming is derived from water in an endothermic process. The stack exit temperature is normally above 800° C. DC power from the fuel cell assembly and AC power from the gas turbine generator are directed to a power conditioner. Anode exhaust gas including carbon monoxide and hydrogen is divided into a plurality of portions by which heat may be added to the reforming, gas turbine, and cathode air heating processes. Water may be recovered from the exhaust. A power system in accordance with the invention is capable of operating at a higher total efficiency than either the fuel cell component or the gas turbine component alone.

The invention provides a control method and device for air conditioning equipment, and an air conditioner. The method comprises the following steps: collecting an indoor image and identifying a human body positioned in the image, to obtain position information of the human body; according to the position information of the human body, dividing swing flap areas of the air conditioning equipment; to obtain attribute information of each swing flap area; according to the attribute information, determining operating parameters of the air conditioning equipment in the swing flap area; and during the next air supplying period, controlling the air conditioning equipment to supply the air in each swing flap area according to own operating parameters. The method is capable of, according to the distribution situation of indoor crowd, dynamically regulating the operating parameters of the air conditioning equipment, improving the intelligence and use convenience of the air conditioner, improving the user comfort level and the user experience, and solving the technical problem in the prior art that the intelligence level of the air conditioning equipment which uniformly supplies the air in the fixed air speed according to the direction of the user is low.

The invention provides a method for controlling the frequency of a frequency converting air conditioner, which comprises the following steps: determining limit frequency; determining temperature controlling frequency; allowing the temperature controlling frequency of the compressor to be an operation frequency, wherein the operation frequency can not exceed the limiting frequency. The method for controlling the frequency of the frequency converting air conditioner controls the running frequency of the air conditioner according to the change rate and a temperature difference value of room temperature, has the characteristics of small change fluctuation of the room temperature, low cost and the like, and gives full play to the energy efficiency of the frequency converting air conditioner and simultaneously protects the safety of electrical appliances effectively.

The invention discloses an intelligent control method for an air conditioner. The method includes the steps that the air conditioner is powered on to operate; a human body sensor module is used for detecting number of people in the room and the activity level of people in the room, and judging the activity grade of the activity level of people in the room according to the corresponding relation between the activity level of people in the room and the activity grade; the target temperature value and the target wind speed value are adjusted according to the number of people in the room and the activity grade; the actual operating frequency F of a compressor is obtained according to the following formula: F=f*P1*P2*K; and the compressor is controlled to operate at the actual operating frequency F. By means of the method, control intelligence of the air conditioner and accuracy of frequency control can be improved, and the energy-saving property and comfort can also be improved.

A power inverter includes a regulator circuit that controls real and reactive power output by the inverter. The regulator measures real and reactive output power by calculating x-phasor components of the inverter's voltage and current output waveforms. Phasor calculation can be adapted for one or more pairs of single-phase voltages and currents. Determining the fundamental in-phase and quadrature components of output voltage and current reduces computational complexity by permitting the regulator to perform its power control processing largely in a dc signal domain, and enables separate real and reactive power control. The power inverter can include islanding detection logic, which exploits the ability to separately control reactive power. Exemplary islanding detection logic is based on determining whether changing the amount of reactive power output by the inverter induces an output frequency shift.

A device for controlling a single-phase power conditioner for a renewable energy system. The device comprises: a power system, providing alternating current (AC) utility power; a renewable energy system, using a natural resource so as to generate direct current (DC) power; a DC-to-DC converter, accepting the DC power generated by the renewable energy system so as to convert an input DC voltage of the DC power to an output DC voltage at a voltage level different from the DC input voltage; a grid-tied power conditioner, transforming voltage levels of the AC power and DC power; a controller, issuing a control signal for controlling the grid-tied power conditioner; and a load, consuming electricity by way of the grid-tied power conditioner.

A railway power conditioner includes a DC-AC converter and a AC-DC converter for performing power conversion between AC power and DC power, a DC bus connected between the DC-AC converter and the AC-DC converter; a single-phase isolation transformer coupled to an output of the AC-DC converter and a coupling capacitor connected to the DC-AC converter.

A self-powered tire revolution counter includes a motion sensitive power generation mechanism, a power conditioner, a pulse detector, a microcontroller, and, optionally, a radio frequency (RF) transmitting device. In one exemplary embodiment, the power generation mechanism corresponds to a piezoelectric patch that, during movement, provides both operating electrical power and pulsed signals indicative of tire rotation. The power conditioner receives a generator signal from the power generation mechanism and produces a conditioned output voltage that can be used to power associated electronic devices, including the microcontroller. The pulse detector receives the generator signal and produces a detection signal whenever the generator signal meets a predetermined condition. The microcontroller is programmed to determine current and lifetime-accumulated values of selected pulse indications in the detection signal that meet predetermined criteria. Data corresponding to tire environment related parameters such as temperature, pressure, tire deflection, and / or vehicle speed may be stored in the microcontroller at times during tire rotation as power is supplied from the power generation mechanism through the power conditioner. Additional data may be supplied to the microcontroller directly from an external source and read from the microcontroller either by direct electrical contact or via selective RF transmission.

A decoder architecture and method for processing codewords are provided. In one implementation, the decoder architecture includes an input buffer configured to receive and store one or more codewords to be processed, and a decoder configured to receive codewords one at a time from the input buffer. The decoder processes each codeword only for a minimum amount of time for the codeword to become error free. The decoder architecture further includes an input buffer monitor and supply regulator configured to change a voltage supply to the decoder responsive to an average amount of time or each codeword to become error free.

The invention discloses a method for controlling the energy-saving operation of a frequency converting air conditioner. The method for controlling energy-saving operation comprises the following steps of: obtaining refrigerating capacity / heating capacity of different frequency bands under a rated working condition, the refrigerating capacity / heating capacity under different working conditions anda correcting value of input power by a test; setting target temperature; calculating the power consumption of an outdoor air conditioner and time t2 when the set temperature is reached under different targets K3'; and finally finding out the optimal target K3' with least power consumption, which meets the condition that t2 is smaller than t1 (t1 is the longest time allowed to take to reach the set temperature) and further obtaining the energy-saving operating frequency f of a frequency converting compressor. By using the method, the air conditioner has less power consumption on the premise ofmeeting the requirement on the comfortableness of a user after entering an energy-saving mode, thereby improving the energy efficiency of the frequency converting air conditioner.

An integrated circuit and method in an integrated circuit for providing electrical power utilizing digital power regulation. Various aspects of the present invention provide an integrated circuit comprising a power supply module that outputs electrical power at an output voltage level. An error determination module may receive a power supply reference signal and a signal indicative of the output voltage level and output a power supply error signal. A digital controller module may receive the power supply error signal, digitally process the power supply error signal, and output a power supply control signal. A power output-monitoring module may monitor the electrical power output from the power supply module and output the signal indicative of the output voltage level. The power supply module may receive the power supply control signal and output the electrical power based, at least in part, on the power supply control signal.

A motor drive for conditioning power to be delivered to a load includes a current feedback circuit that monitors current being fed to a transformer connected between the motor drive and the load. Based on the total current input to the transformer, a controller adjusts the V / Hz profile along which the motor drive operates. In this regard, the motor drive operates according to a V / Hz profile during start-up that prevents transformer saturation.

The invention provides an air conditioner control method which comprises the steps of under a dehumidification mode, detecting the temperature of a heat exchange pipe of the air conditioner; judging whether the temperature is greater than a first preset threshold value; when the temperature is greater than the first preset threshold value, controlling the air conditioner to run under a normal dehumidification mode; when the temperature is smaller than the first preset threshold value, increasing the temperature of the heat exchange pipe by adjusting the running frequency of a compressor of the air conditioner and / or the rotating speed of an indoor fan so as to ensure that the air conditioner runs under the dehumidification mode efficiently and stably. The invention also provides an adaptive dehumidification control system and an air conditioner.

A motor drive for conditioning power to be delivered to a load includes a current feedback circuit that monitors current being fed to a transformer connected between the motor drive and the load. Based on the total current input to the transformer, a controller adjusts the V / Hz profile along which the motor drive operates. In this regard, the motor drive operates according to a V / Hz profile during start-up that prevents transformer saturation.