71results about How to "Reduce load (power" patented technology

A system and method intelligently control power consumption of distributed services using a computer system that provides independent computing elements each capable of entering a power saving mode. In accordance with the present invention, three different algorithms are disclosed. The first algorithm is a reduced load power saving algorithm. As the load decreases, duplicate instances of services can be gracefully suspended and the host processor cards hosting these instances can enter a power saving mode. The second algorithm is a priority-based power consumption reduction algorithm. If power consumption must be reduced, services having less of a contribution to revenue are suspended before components that having a higher contribution to revenue. The third algorithm is a minimal power-consuming redundant computing hardware algorithm that allows a “cold spare” host processing card to be pressed into service if another card fails.

A system and method to intelligently control power consumption of distributed services using a computer system that provides independent computing elements each capable of entering a power saving mode. The first algorithm is a reduced load power saving algorithm. As the load decreases, duplicate instances of services can be gracefully suspended and the host processor cards hosting these instances can enter a power saving mode. The second algorithm is a priority-based power consumption reduction algorithm. If power consumption must be reduced, services having less of a contribution to revenue are suspended before components that having a higher contribution to revenue. The third algorithm is a minimal power-consuming redundant computing hardware algorithm that allows a “cold spare” host processor card to be pressed into service if another card fails.

The invention discloses a sieving and crushing integrated machine. The sieving and crushing integrated machine comprises a machine housing, a sieving and distributing machine (1) arranged at an upper part of the machine housing, and a sieving and crushing machine (35) arranged at a lower part of the machine housing, wherein the sieving and distributing machine (1) comprises a charge hole (2), an arc-shaped distributing plate (6), an iron remover (11), a transmission device, a flange type sieve shaft (4) and a filter sieve shaft (5); the sieving and crushing machine (35) comprises a main rotor, an arc-shaped counterattack sieve roller set, a particle size adjusting device and a transmission device; and a charge hole (36) of the sieving and crushing machine is positioned below a discharge hole (9) of the sieving and distributing machine. The sieving and crushing integrated machine has the following creative effects: the original two-stage crushing and one-stage sieving mode is changed to be a one-stage sieving and one-stage crushing mode, so that a system structure is simplified; problems of material adhesion and blockage, high iron content, low sieving and crushing efficiency, high power consumption, non-uniform ring hammer wear, unadjustable particle size, high difficulty in overhauling and replacement of spare parts, inconvenience in operation and the like are solved; and the sieving and crushing integrated machine is a major innovation of sieving and crushing equipment technology.

A system and method intelligently control power consumption of distributed services using a computer system that provides independent computing elements each capable of entering a power saving mode. In accordance with the present invention, three different algorithms are disclosed. The first algorithm is a reduced load power saving algorithm. As the load decreases, duplicate instances of services can be gracefully suspended and the host processor cards hosting these instances can enter a power saving mode. The second algorithm is a priority-based power consumption reduction algorithm. If power consumption must be reduced, services having less of a contribution to revenue are suspended before components that having a higher contribution to revenue. The third algorithm is a minimal power-consuming redundant computing hardware algorithm that allows a “cold spare” host processing card to be pressed into service if another card fails.

A switching power supply circuit which can achieve enhancement of the power conversion efficiency is disclosed. In a composite resonance converter wherein a current resonance type converter constructed on the primary side and a primary side partial voltage resonance circuit are combined, a primary side DC input rectification circuit is formed from a full-wave rectification circuit. Further, a gap G of the core of an insulating converter transformer (PIT) is set to 2.0 mm to set the coupling coefficient of the primary winding (N1) and the secondary winding (N2) to approximately 0.81 of a loose coupling state. Further, the numbers of turns of the primary winding (N1) and the secondary winding (N2) are selected so that the induced voltage per one turn of the secondary winding (N2) is 2 V or less. With the configuration, if the leakage inductance (L1l) of the primary winding (N1) and the leakage inductance (L2l) of the secondary winding (N2) are increased, then reduction of the primary side current (I1) in a light load condition can be achieved and the switching output current (IQ1), (IQ2) can be reduced.

The present invention relates to an apparatus for controlling power of mufti core processor, which includes a power control device by core unit, controls a plurality of power-related parameters by core unit, and thus decreases a load for power management and enables realization of a low power multi core processor through minute power control. The apparatus includes a processor core adapted to provide code information on an application program for executing to a power regulation controller, and a power regulation controller adapted to receive the code information on the application program from the processor core to determine an operation frequency of the processor core, set an operation voltage, a clock-gating value and a power-gating value according to the determined operation frequency, and provide the set values and voltage to the processor core.

A circuit arrangement is provided, including at least one heat-generating power component and means for monitoring the temperature of the circuit arrangement. When a preset limiting temperature is reached, the means for monitoring the temperature reduces the power of the load using the power component by reducing the load current flowing through the power component. An electric switch including such a circuit arrangement is also provided.

The embodiment of the invention discloses an automatic dimming emergency lamp. The automatic dimming emergency lamp comprises an emergency power supply, a boost constant current module, a power supply switching module and a field effect transistor Q2, a load of the boost constant current module comprises a first load resistor and a second load resistor, two ends of the first load resistor are connected with ground and one end of the second load resistor respectively, the other end of the second load resistor is connected with a source electrode of the field effect transistor Q2, a drain electrode of the field effect transistor Q2 is grounded, a grid electrode of the field effect transistor Q2 is connected with a first input end of the power supply switching module, the first input end of the power supply switching module is connected with a mains supply conversion low power supply, a second input end of the power supply switching module is connected with the emergency power supply, an output end of the power supply switching module is connected with the boost constant current module, the power supply switching module is used for controlling the boost constant current module to access to the mains supply conversion low power supply when a mains supply is normal, the field effect transistor Q2 is connected, when the mains supply is cut off, the power supply is switched to the emergency power supply, and the field effect transistor is disconnected. According to the automatic dimming emergency lamp, the access or cutting off of the second load resistor is controlled through connecting and disconnecting of the Q2, so that the illumination intensity of the emergency lamp is changed, and the illumination time is prolonged.

The invention relates to a photovoltaic inverter control device with the backflow preventing function to enable a three-phase inverter to achieve the backflow preventing function and further relates to a control method of the photovoltaic inverter control device with the backflow preventing function, wherein the photovoltaic inverter control device with the backflow preventing function and the control method are applied to a grid-connected irreversible system of the three-phase inverter. Whether backflow occurs in a photovoltaic inverter system or not is monitored in real time when the inverter runs, and if yes, the active current is given, amplitude limiting is carried out on the active current, the active current is limited as 0, and in other words, Idref is equal to zero; if not, whether the photovoltaic inverter system has the backflow tendency or not is judged, if the photovoltaic inverter system has the backflow tendency, the power reduction is carried out on the inverter, and if the photovoltaic inverter system does not have the backflow tendency, the process is ended. By means of the method, the output power of the three-phase inverter is kept constant, the oscillation phenomenon cannot occur, the response speed is higher, control is more timely, effective control can be carried out before a grid-connected power generation system possibly sends residual electric energy to a power grid, backflow is prevented, and the real-time performance is good especially on the occasions where the situation that a load is suddenly discharged happens frequently.

The objective of the present invention is to provide a power source and operational method in which a plurality of inverters are connected in parallel with the ability to suppress the crosscurrent with a very simple means. The present invention is an electric power source in which a plurality of inverted operate on the same frequency and the plurality of inverters are connected in parallel so that a resistance value expressed by (1-beta.G) / (alpha.G) here alpha is the output voltage feedback gain, beta is the output current feed forward gain, and G is the inverter current gain, is made to be the equivalent output impedance; and is an electrical power source in which the cross-current between the inverters are made to be an acceptable value or below by adjusting the output of each of the inverters by controlling the equivalent output impedance by modifying both or either one of the output voltage feedback gain alpha or the output current feed forward gain beta.

The invention discloses a fan, comprising a fan frame, an impeller and a motor. The fan frame comprises a frame body, a base foundation and at least a support part. The base foundation is connected by the support part and the frame body. The impeller is set on the base foundation and comprises a hub and multiple fan leaves, which are set round the hub. The motor is connected with the impeller and drives the impeller rotate. Thereinto each fan leaf is connected on hub with a presetting installing angle and the presetting angle is from 22.5 degrees to 36 degrees.

The invention discloses a large-scale upper oil tank hydraulic power unit. The large-scale upper oil tank hydraulic power unit comprises a machine frame, an oil pump motor assembly and an oil tank; the oil pump motor assembly is arranged on a mounting platform of the machine frame, and the oil tank is arranged above the oil pump motor assembly through a support assembly of the machine frame so as to form an upper oil tank. The design of the upper oil tank is adopted by the hydraulic power unit, and the hydraulic power unit has a compact structure, the advantages of low shaking degree and stability in working of a side oil tank hydraulic power unit and the advantages of small occupied space of a lower oil tank hydraulic power unit; the oil tank is arranged on the upper part to bring convenience to the oil absorption of the oil pump; and due to the action of gravity, under the condition of not adding compressed air on the oil tank, the oil pump can absorb oil easily, and the load power of the oil pump can be reduced.

The invention provides a detection device and method for a three-phase current unbalance adjustment device. The detection device comprises an incoming line, a first air breaker, a current transformer,a busbar, an independent load module and a load adjusting module; the first air breaker is arranged on the incoming line and connected with the busbar through the current transformer, and the independent load module and the load adjusting module are connected with the busbar separately. Two load topologies of the independent load module and the load adjusting module are adopted, the load adjusting module is not adjustable, the independent load module can be adjusted only through a button for rapid inspection, multiple phase change switches in the three-phase current unbalance adjustment device can be detected at the same time, and the detection efficiency is high. The three-phase unbalance complex working conditions of a power distribution network zone area are simulated, the load power of the simulated power distribution network zone area is lowered, the detected current magnitude is enlarged through software, and the adjusting capability of the three-phase current unbalance adjustment device is easily verified.

Disclosed is a method for controlling overcurrent jump stop of a high-temperature fan in a cement rotary kiln production line pipeline. The method includes detecting two-phase current of a high-temperature motor through a current sensor, and decomposing detected current through coordinate conversion to acquire momentary active and momentary reactive current; utilizing a PI adjuster to control the momentary reactive current to prevent a frequency changer from overcurrent protection due to load changing; when amplitude of output current of the high-temperature motor is higher than a set value, controlling the frequency changer to quickly lower frequency, and when current returns to normal, increasing the frequency to given frequency. The method has the advantages of simple principle, convenience in control, good reliability, high controlling accuracy and the like.

The invention discloses a water-cooling and air-cooing interactive type heat dissipation device for a diesel engine. The water-cooling and air-cooing interactive type heat dissipation device comprises an air cooling system and a water cooling system. The air cooling system comprises a fan, an air guide hood and cooling fins arranged on a cylinder liner and a cylinder cover. The water cooling system comprises a miniature gear pump and a closed-loop pipeline connected with the miniature gear pump. The closed-loop pipeline is attached to the cylinder cover, a power input shaft of the miniature gear pump is connected with an impeller which is located at the outlet end of an exhaust by-pass pipe, and the inlet of the exhaust by-pass pipe is communicated with an exhaust pipe on the cylinder cover. The middle of the exhaust by-pass pipe is provided with a paraffin valve used for monitoring the gas temperature in the exhaust pipe. Through interaction of water-cooling heat dissipation and air-cooling heat dissipation, the heat dissipation speed of an engine in high-load work is increased, the condition that the temperature of the cylinder cover is not evenly distributed is avoided, deformation and gas leakage, caused by the too high temperature of the cylinder cover, of the cylinder cover are avoided, and the condition that multiple portions in a cylinder are ignited in high temperature work is avoided.

The invention discloses a modularized industrial flue gas purifying device which comprises a flue gas cooling module B, a flue gas purifying module A, a supporting column C and an air flow sealing structure, wherein the flue gas cooling module B is arranged at the front end of the gas flow direction and is used for cooling gas flow; the flue gas purifying module A is arranged at the top of the flue gas cooling module B and is used for achieving purification and gas-water separation on flue gas flow; the bottom of the flue gas cooling module B is arranged at the top of a flue gas outlet D through the supporting column C; furthermore, a gap between the flue gas cooling module B and a flue gas channel is wrapped by an air flow sealing structure to prevent unpurified flue gas from being exhausted out directly. The modularized industrial flue gas purifying device disclosed by the invention can effectively achieve gas-water separation on water-containing flue gas in an industrial waste gas exhausting channel and collect particles in the gas flow; compared with a traditional physical absorption method, the gas flow channel is prevented from being plugged, and an effect on air pressure drop of channel gas flow is extremely low; the modularized industrial flue gas purifying device is suitable for being applied to severe operation environments of factory flue gas exhausting openings andthe like.

The invention discloses a controllable load demand response menu pricing method considering user risk preferences. By mining different risk preference characteristics of electric power users to a controllable load demand response, and taking demands of controllable load users as a guide, demand risk preference characteristics of different users are considered and user types are divided; and by taking a demand response electricity price and a load reduction quantity as menu options, a controllable load demand response menu pricing model taking minimum total cost of system power supply as an objective function is built, and the model is subjected to optimization solving to obtain an optimal controllable load demand response menu for the electric power users to select. According to the pricing method, the users with different risk preferences can be effectively distinguished, so that the autonomous selectivity of the users to the electricity price is improved, the positivity of user participation is enhanced, and optimization and configuration of electric power resources are easy to realize.

The invention provides a system and a method for reducing power consumption of a dry pump. The system for reducing the power consumption of the dry pump is additionally provided with an electricity saving module (4) connected with the dry pump (2), wherein the electricity saving module (4) comprises a reducing valve (41); an admission end (A) of the reducing valve (41) is communicated with an outlet end (C) of an exhaust line (27) of the dry pump (2); and a vent end (B) of the reducing valve (41) is communicated with atmosphere. When the dry pump (2) is in an idling state, the reducing valve (41) can reduce pressure at the outlet end (C) of the exhaust line (27) to result in vacuum; negative pressure is kept in the exhaust line (27); compared with the prior art, the pressure of a final stage pump cavity (21) of the dry pump (2) is reduced to the negative pressure instead of atmospheric pressure; the pressure that the final stage pump cavity (21) is required to reach is decreased; rotating speeds of corresponding rotors (23) in pump cavities (21) at all stages are reduced; and the load power of the dry pump (2) is reduced, so that the power consumption of the dry pump can be reduced effectively.

The invention discloses a stepless variable power inductive ballast which is arranged between a load and a power supply, and comprises a constant power control device, a stepless varindor and a forward-reverse rotation motor; the constant power control device is used for acquiring load power, compares the load power with set power, outputs a control signal according to a comparison result, and thus drives the forward rotation and the number of rounds of forward rotation or the reverse rotation and the number of rounds of reverse rotation of the forward / reverse rotation motor; the stepless varindor comprises a fixed iron core and a moving iron core, and the move-in quantity of the moving iron core corresponding to the fixed iron core is adjusted through the forward / reverse rotation adjustment of a lead screw, so that the inductance which is output to the load is changed and the load power is controlled; the power input end of the forward / reverse rotation motor is electrically connected with the output end of the constant power control device; and a pin shaft (3) of the forward / reverse rotation motor is fixedly connected with the lead screw. The stepless variable power inductive ballast is linear and stepless, has no instantaneous power-off and arcing phenomena, and has the advantages that the service life of a lamp tube is prolonged, the energy-saving efficiency is improved and the maintenance cost is low.

The invention provides a servo electric propulsion device for a low voltage feed switch breaker. The device comprises a propulsion machine, wherein the propulsion machine comprises a bottom board, the bottom board is perpendicularly provided with a static supporting board, the static supporting board is provided with a static contact of a plug connector, two sides of the bottom board are symmetrically provided with bearing blocks, two ends of the bearing blocks are provided with bearing wheels, a sliding board is arranged between the bearing wheels, one end of the sliding board is provided with a moving supporting board, a motor and the propulsion device, the moving supporting board is provided with a moving contact of the plug connector, the propulsion device is attached to the supporting board and is arranged on the sliding board, and a bearing board is arranged on the bearing blocks. The device is advantaged in that load power of the servo motor can be reduced, reliable isolation between the breaker and three-phase power source input can be realized, reliable power off can be realized, and a safety coefficient of a coal mine feed switch is greatly improved.

The invention provides a motor driving method and device and an air conditioner, which relate to the technical field of air conditioners. The method and device calculate q-axis torque current according to bus voltage, phase current and preset rotational speed reference value, then determine q-axis voltage and d-axis voltage to generate pulse width modulation signal according to q-axis voltage andd-axis voltage to generate pulse width modulation signal. As that q-axis torque current is given through the bus voltage, Phase current, as determined by a preset speed reference value, As a result, the q-axis torque current varies with the bus voltage fluctuation, so that the load power of the power conversion circuit and the motor fluctuates with the voltage fluctuation of the bus bar, Thus, theload power formed by the power conversion circuit and the motor at the low valley of the input voltage is small, thereby avoiding the problem of the input current peak at the low valley of the inputvoltage in the traditional manner, improving the reliability of the component and prolonging the service life of the component.

The invention discloses a sieving and crushing integrated machine. The sieving and crushing integrated machine comprises a machine housing, a sieving and distributing machine (1) arranged at an upper part of the machine housing, and a sieving and crushing machine (35) arranged at a lower part of the machine housing, wherein the sieving and distributing machine (1) comprises a charge hole (2), an arc-shaped distributing plate (6), an iron remover (11), a transmission device, a flange type sieve shaft (4) and a filter sieve shaft (5); the sieving and crushing machine (35) comprises a main rotor, an arc-shaped counterattack sieve roller set, a particle size adjusting device and a transmission device; and a charge hole (36) of the sieving and crushing machine is positioned below a discharge hole (9) of the sieving and distributing machine. The sieving and crushing integrated machine has the following creative effects: the original two-stage crushing and one-stage sieving mode is changed to be a one-stage sieving and one-stage crushing mode, so that a system structure is simplified; problems of material adhesion and blockage, high iron content, low sieving and crushing efficiency, high power consumption, non-uniform ring hammer wear, unadjustable particle size, high difficulty in overhauling and replacement of spare parts, inconvenience in operation and the like are solved; and the sieving and crushing integrated machine is a major innovation of sieving and crushing equipment technology.

A wavelength conversion member includes a substrate, a phosphor layer, and a ventilated blade. The substrate is configured to rotate based on an axis. The phosphor layer is disposed on the substrate. The ventilated blade is disposed on the substrate and has a pore density between 10 ppi and 500 ppi or a volume porosity between 5% and 95%.