Patent ID: 9203329
Filing Date: 2015-12-01
Classification: H02P

Abstract:
1. A motor drive control system comprising: a voltage command generation unit which generates a voltage command amplitude and a voltage command phase based on a current command value; a phase generation unit which generates a voltage command phase during rectangular wave energization; a control switching determination unit which switches by determining which of PWM energization or rectangular wave energization will be performed depending on an amount of a condition of a motor controlled by said motor drive control system and driven by an AC current, said determining being performed independently of said AC current; a PWM energization unit which outputs a PWM waveform depending on the voltage command amplitude and the voltage command phase generated by said voltage command generation unit; a rectangular wave energization unit which outputs a rectangular wave depending on the voltage command phase generated by said phase generation unit during rectangular wave energization; and a switching device unit which performs a switching operation according to the output of said PWM energization unit or said rectangular wave energization unit, said voltage command generation unit calculating the voltage command amplitude and the voltage command phase by using parameters of said motor.