Pulsating current (ripple) is generated in a zero-phase current to increase a loss. A motor control system includes an inverter which drives a motor which includes windings separately wound around each phase and an inverter control unit which generates an output voltage pulse corresponding to each phase to control the inverter on the basis of a torque command value and a rotor position of the motor. The inverter control unit divides the output voltage pulse of at least one phase of the output voltage pulses into several pulses during one period of the output voltage pulse such that a zero-phase voltage of only one of positive and negative polarities is output several times from the motor in the one pulse period.

A power conversion apparatus comprises, a converter that receives a three-phase AC power supply 1 and outputs a DC voltage, an inverter that is connected to the output of the converter and drives the AC motor via the output switch, a power switch for directly driving an AC motor from the AC power supply, a current detector for detecting the output current of the inverter, a voltage detector and a current detector for detecting the voltage and current of the power supply system on the input side of the converter, respectively, and a control unit for controlling the three-phase output voltage of the inverter based on the voltage command of three phases. The control unit includes a vector control unit that performs vector control of the AC motor and a synchronous incorporation controller. The synchronous incorporation controller switches to operate the inverter as a reactive power controller for the power supply system after closing the power switch to synchronize the AC motor with the AC power supply.

A rotary electric machine control device is provided to control a motor having motor winding sets and includes a plurality of inverter circuits and a plurality of control circuits capable of mutual communication. The inverter circuits switch over the current supply to the motor winding sets. The control circuits include driver control sections, which control the inverter circuits provided correspondingly, and abnormality monitor sections, which monitor the abnormality. The abnormality monitor sections monitor the abnormality of the own system and the other system based on the plurality of abnormality information. The driver control sections change a control mode according to the abnormal state. It is thus possible to control the driving of the motor appropriately based on the abnormality state.

A rotary electric machine control device is provided to control a motor having motor winding sets and includes a plurality of inverter circuits and a plurality of control circuits capable of mutual communication. The inverter circuits switch over the current supply to the motor winding sets. The control circuits include driver control sections, which control the inverter circuits provided correspondingly, and abnormality monitor sections, which monitor the abnormality. The abnormality monitor sections monitor the abnormality of the own system and the other system based on the plurality of abnormality information. The driver control sections change a control mode according to the abnormal state. It is thus possible to control the driving of the motor appropriately based on the abnormality state.

Pulsating current (ripple) is generated in a zero-phase current to increase a loss. A motor control system includes an inverter which drives a motor which includes windings separately wound around each phase and an inverter control unit which generates an output voltage pulse corresponding to each phase to control the inverter on the basis of a torque command value and a rotor position of the motor. The inverter control unit divides the output voltage pulse of at least one phase of the output voltage pulses into several pulses during one period of the output voltage pulse such that a zero-phase voltage of only one of positive and negative polarities is output several times from the motor in the one pulse period.

Pulsating current (ripple) is generated in a zero-phase current to increase a loss. A motor control system includes an inverter which drives a motor which includes windings separately wound around each phase and an inverter control unit which generates an output voltage pulse corresponding to each phase to control the inverter on the basis of a torque command value and a rotor position of the motor. The inverter control unit divides the output voltage pulse of at least one phase of the output voltage pulses into several pulses during one period of the output voltage pulse such that a zero-phase voltage of only one of positive and negative polarities is output several times from the motor in the one pulse period.

Electronic equipment includes a center frame, a first motor, a second motor, and a drive module. The first motor and the second motor are fixed respectively at a first designated location and a second designated location of the center frame. The drive module is electrically connected respectively to the first motor and the second motor. The drive module is adapted to drive, according to a control signal, the first motor or the second motor to vibrate independently, or drive the first motor and the second motor to vibrate synchronously.

A motor system comprises a device having a plurality of conductors coupled to a plurality of isolated connection bars, wherein the plurality of conductors is divided symmetrically into a plurality of conductor groups, and all conductors in a conductor group are connected to a connection bar, a first power converter group connected between a first power source and a first conductor group, a second power converter group connected between a second power source and a second conductor group, wherein the first group of conductors and the second group of conductors are configured such that a charge balance between the first power source and a second power source is achieved and a rotor magnetically coupled to a stator.

A motor system comprises a device having a plurality of conductors coupled to a plurality of isolated connection bars, wherein the plurality of conductors is divided symmetrically into a plurality of conductor groups, and all conductors in a conductor group are connected to a connection bar, a first power converter group connected between a first power source and a first conductor group, a second power converter group connected between a second power source and a second conductor group, wherein the first group of conductors and the second group of conductors are configured such that a charge balance between the first power source and a second power source is achieved and a rotor magnetically coupled to a stator.

Described embodiments relate to motor control for synchronous motors, and more specifically, some embodiments relate to motor-current control for permanent-magnet synchronous motors. Embodiments of a current controller are described that include an adaptive controller configured to adapt to changing system dynamics of a PMSM. Embodiments of adaptive control techniques are described that involve estimating system parameters of a PMSM and adapting control actions to compensate for such estimated system parameters. Such adapted control actions may be expected to track an observed motor current to a desired motor current. Systems, methods and devices related to the above are also described.