A High Performance Control Method for IPMSM Based on Lookup Tables Considering the System Nonlinearalities

Abstract

This paper proposes a high performance control method based on the Lookup Tables (LUT) for Interior Permanent Magnet Synchronous Motors (IPMSM) in the Electric Vehicles (EV) application. The two-dimensional current LUTs are used to generate the current references according to the torque command and flux linkage limitation. The nonlinear IPMSM model based on the stator flux is established and the optimal operational regions are analyzed. Considering the nonlinearities of both motor parameters and controller characteristics, the detailed steps including experimental data collection and processing are presented. The linearity of the output torque and stability of the output voltage with the calculated current LUTs are experimentally verified using a 40kW IPMSM test platform.