Maximum Torque per Ampere Control of Interior Permanent Magnet Synchronous Motor via Optimal Current Excitation

This research focuses on the optimal current excitation of interior permanent magnet synchronous motors (IPMSM) with non-sinusoidal back electromotive-force (BEMF) for maximum torque per ampere (MTPA) control. In this thesis, an analytical expression for average torque in IPMSM as well as a closed form for optimal current excitation are presented, the optimal current is presented as a function of each current harmonics with different magnitude and frequency to render a better understanding of torque generation in IPMSM, hysteresis current control has been used for current injection in IPMSM, prototype development and testing process have been discussed, validation through both simulation and experimental results with detailed analysis are provided.