POWER CONVERSION DEVICE FOR ELECTRIC MOTOR EXCITATION Russian patent published in 2012 - IPC H02P21/00 H02P27/06 H02P27/08 B60L11/02 B60L15/02 B60W10/08 

FIELD: electricity.

SUBSTANCE: in the power conversion device the second control unit (100) includes the current control command shaping unit (10) shaping the electric motor (6) current control command based on the torque control command T*, the voltage amplitude index calculation unit (150) that calculates the voltage amplitude index (PMF-modulation factor) based on the current control command, the current control commands adjustment unit (80) shaping the value of current control commands adjustment dV based on the PMF-modulation factor and the electric motor (6) frequency FINV and the unit (50) for shaping pulse duration modulation signals/voltage control commands including the ripple suppression signal shaping unit shaping the ripple suppression signal based on DC voltage EFC to suppress the ripple component of the power source 2f-component for shaping a gate signal ( pulse duration modulation signal) into the inverter.

EFFECT: ensuring suppression of the power source 2f-component combined with simultaneous suppression of current overload shaping or excessive torque ripple in an AC electric motor wherein a single-pulse mode is used.

20 cl, 14 dwg