ROTARY ELECTRICAL MACHINE CONTROL DEVICE

摘要

When the connection of a rotary electrical machine drive device and a DC power source unit is disconnected, the power regenerated through an inverter from the rotary electrical machine is rapidly decreased. In a biaxial orthogonal coordinate system that rotates in synchronisation with the rotary electrical machine, if an inverter control unit which controls the inverter by controlling the armature current, which is the synthesis vector of the field magnet current and the drive current along each axis, determines that the connection between the DC power source unit and the inverter is disconnected, the inverter control unit executes zero torque control to control the inverter so that the regenerated torque of the rotary electrical machine becomes zero, and also executes high loss control to vary the field magnet current so that the armature current increases while the torque instruction for zero torque control is maintained.