The invention discloses a power feedback control system and method of MGP system, including detecting the actual active power delivered by the generator to the grid through the measurement and calculation module; making a difference between the measured active power and the given active power; calculating the frequency regulation amount through the PI regulation module according to the difference, and taking it as feedback; calculating the frequency reference value of the converter in the control system; and fine tuning the frequency of the converter through the PI regulation module; regulating the phase difference through frequency modulation; realizing the goal of controlling the power output, so that when predicting the output power of new energy before MGP is connected to the grid based on power feedback control, the output of the control system will not be delayed and the defects that affect the stability and reliability of the control system will not appear, to ensure the successful introduction of new energy grid connection method.

Methods, apparatuses and systems provide technology for a high frequency alternating-current (HFAC) distribution network for a vehicle that includes a plurality of HFAC zones coupled to a direct-current (DC) power source, the plurality of HFAC zones disbursed within the vehicle, where each HFAC zone includes a HFAC resonant inverter to convert DC power to HFAC power and a HFAC bus coupled to the HFAC resonant inverter, the HFAC bus to distribute the HFAC power to one or more loads. The technology includes a CLCL resonant tank circuit having two capacitors and two inductors, a push-pull circuit coupled to the CLCL resonant tank circuit, the push-pull circuit including a pair of switches, and a transformer to couple the inverter to the HFAC bus.

Methods, apparatuses and systems provide technology for a high frequency alternating-current (HFAC) distribution network for a vehicle that includes a plurality of HFAC zones coupled to a direct-current (DC) power source, the plurality of HFAC zones disbursed within the vehicle, where each HFAC zone includes a HFAC resonant inverter to convert DC power to HFAC power and a HFAC bus coupled to the HFAC resonant inverter, the HFAC bus to distribute the HFAC power to one or more loads. The technology includes a CLCL resonant tank circuit having two capacitors and two inductors, a push-pull circuit coupled to the CLCL resonant tank circuit, the push-pull circuit including a pair of switches, and a transformer to couple the inverter to the HFAC bus.

A method for a circuit for a motor comprising first and second phase windings. The method comprises receiving AC power from the first and second phase windings at a DC power supply and converting the AC power to DC power and receiving AC power from the first and second phase windings by at least one power switch between the first and second phase windings and switching the AC power by the at least one power switch. The method includes preventing the DC power supply from collapsing, by a first component connected to the DC power supply, when the at least one power switch is on during a first portion of an AC cycle and preventing the DC power supply from collapsing, by a second component connected to the DC power supply, when the at least one power switch is on during a second portion of the AC cycle.

A method for a circuit for a motor comprising first and second phase windings. The method comprises receiving AC power from the first and second phase windings at a DC power supply and converting the AC power to DC power and receiving AC power from the first and second phase windings by at least one power switch between the first and second phase windings and switching the AC power by the at least one power switch. The method includes preventing the DC power supply from collapsing, by a first component connected to the DC power supply, when the at least one power switch is on during a first portion of an AC cycle and preventing the DC power supply from collapsing, by a second component connected to the DC power supply, when the at least one power switch is on during a second portion of the AC cycle.

A method for controller a multiphase electric machine includes, in response to a determination that a phase of the multiphase electric machine is in an open circuit condition, determining a desired torque to be generated by the multiphase electric machine and retrieving, based on the determination that the phase is in the open circuit condition and the desired torque, a set of current values to be applied to each of the other phases of the multiphase electric machine to achieve the desired torque. The method may also include applying respective current values of the set of current values to corresponding ones of the other phases of the multiphase electric machine, the set of current values being determined based on a model of the multiphase electric machine that includes the phase is in the open circuit condition.

A method for controller a multiphase electric machine includes, in response to a determination that a phase of the multiphase electric machine is in an open circuit condition, determining a desired torque to be generated by the multiphase electric machine and retrieving, based on the determination that the phase is in the open circuit condition and the desired torque, a set of current values to be applied to each of the other phases of the multiphase electric machine to achieve the desired torque. The method may also include applying respective current values of the set of current values to corresponding ones of the other phases of the multiphase electric machine, the set of current values being determined based on a model of the multiphase electric machine that includes the phase is in the open circuit condition.

Control of an AC motor includes rotation over an operating speed range with the output from an inverter by operating the inverter at switching frequencies that vary in proportion to rotor speed. The operating speed range is parsed into a plurality of speed regions and the switching frequencies within each operating speed region may correspond to a respective pulse ratio that is different from the respective pulse ratio corresponding to an adjacent speed region.

A method of controlling a BLDC electric motor having a stator and a rotor, the stator having a plurality of magnet coils, the rotor having a permanent magnet driven by the plurality of magnet coils, comprising a) supplying a voltage to a first of the plurality of magnet coils, b) short-circuiting a second of the plurality of magnet coils during a).

The identification method according to an embodiment is used for an identification device for identifying the type of a brushless DC motor. A brushless DC motor includes an output terminal for outputting a signal. The output terminal is able to output a signal obtained by superimposing signal types. The signal resulting from the superimposition is different depending on the types of brushless DC motors. In the identification method, power is supplied to a brushless DC motor, and the signal resulting from the superimposition that is output from the output terminal of the brushless DC motor is input to an identification device. The signal resulting from the superimposition is separated into signal types, and the separated signals are used to identify the type of the brushless DC motor.