MAPT Control of PMaSynRM Including Magnetic Saturation

The paper presents a Minimum Ampere per Torque control strategy for Permanent Magnet Assisted Synchronous Reluctance Motor. The algorithm aims to minimize the copper losses at any given torque level, and also results in maximum torque production for a given current limit. The suggested MAPT strategy takes into account the effects of magnetic saturation and gives optimal stator current vector using simplified recursive Newton-Raphson iterative method. The performances of the suggested optimal strategy were tested on the low voltage permanent magnet assisted synchronous reluctance drive intended for pump application.