Comparison of an Off-Line Optimized Firing Angle Modulation and Torque Sharing Functions for Switched Reluctance Motor Control

Abstract

In this paper, a comparison of the simple firing angle modulation method (FAM) and the more advanced torque sharing function (TSF)-based control of switched reluctance motor (SRM) is presented. The off-line procedure to tailor and optimize the parameters of chosen methods for off-the-shelf SRM is explained. Objective functions for optimization are motor efficiency, torque ripple, and integral square error. The off-line optimization uses a finite element method (FEM) model of the SRM. The model was verified by measurement on the SRM. Simulation results showed that FAM has comparable efficiency to TSF, but has a much higher value of torque ripple. The presented off-line procedure can be used for single or multi-objective optimization.

Switching Frequency Determination of SiC-Inverter for High Efficiency Propulsion System of Railway Vehicle

“…Therefore, this paper conducts the loss analysis through the co-simulation between the SiC inverter (Power SIM software) and the IPMSM (J-MAG software) to consider the interaction of them. It is obvious that the simulation results are reliable in the comparison and analysis [30][31][32].…”

“…In the efficiency analysis, the efficiencies of SiC inverter and PMSM are calculated through the co-simulation of SiC inverter (PSIM software, Powersim Inc., Rockville, MD, USA) and PMSM (J-MAG software, JSOL Corporation, Tokyo, Japan) to consider the interaction of them. Simulation results are based on the determination of the switching frequency of SiC inverter [30][31][32]. Based on the power loss curve of the propulsion system, the switching frequency with highest efficiency can be determined for propulsion inverter.…”

A modified model predictive current control of SRMs for torque ripple suppression

“…The optimization of the structure [20][21][22][23][24][25] and advanced control strategies [26][27][28] are two practical methods to decrease the torque ripple. In terms of control strategies, several advanced control schemes, including the sliding mode control, [29][30][31][32][33] torque sharing function control, [34][35][36][37] direct torque control, [38][39][40][41] and model predictive control (MPC) [42][43][44] are investigated. Among them, the MPC attracts more attention for its fixed switching frequency, fast response, and distinguished ability to handle constraints of system variables.…”

A High-Performance Indirect Torque Control Strategy for Switched Reluctance Motor Drives

“…In ITC, torque sharing function (TSF) is adopted to distribute the electromagnetic torque command to each phase of the motor, and then the optimized phase current reference is obtained by the nonlinear mapping of current-torque-angle i(T, θ). Torque control can be indirectly realized by regulating the current to track the optimized current reference [13][14][15]. erefore, the key to determining the performance of the ITC algorithm is the TSF and the inner-loop current controller.…”