METHOD FOR CURRENT CONTROL PULSE WIDTH MODULATION OF MULTIPHASE FULL BRIDGE VOLTAGE SOURCE INVERTER

摘要

The present invention relates to a method for current control pulse width modulation of a multiphase full bridge voltage source inverter, for driving an independent multiphase permanent magnet synchronous motor. The first technical feature of the present invention is the provision of low switching torque ripple characteristics by alternating central positions of voltage pulses output from a multiphase full bridge voltage source inverter. The second technical feature of the present invention is to obtain a constant switching frequency and excellent current tracking characteristics by obtaining a reference voltage of a multiphase full bridge voltage source inverter using a phase variable model including an inductance matrix of an independent multiphase permanent magnet synchronous motor for each of a normal operation and a fault tolerance operation. The second technical feature is embodied by a linear feedback current control pulse width modulation method and a predictive current control pulse width modulation method.