具有降低转矩脉动和提高直流母线利用率的极相调制多相感应电机驱动

Wider speed and torque range is one of the major requirements of high-power propulsion and traction applications. Pole-phase modulation (PPM) of multiphase induction motors provide extended speed-torque range without the need of oversizing the motor rating. Particularly, PPM of nine-phase IM gives four-pole and 12-pole mode of operations with wider speed and torque variations. But in three-phase (...