Modelling and Simulation of Interior Permanent Magnet Synchronous Machine and, Design Optimization Towards Transmission

University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

Author: Sindhuja Balaji; [2022]

Keywords: Traction motors; Electric vehicles; Interior permanent magnet synchronous machine; Electric machine FEM simulation; Flux 2D; Electric machine design optimization; Estimation of current and control angle; Multi-objective optimization.; Traktionsmotor; elektriskt fordon; permanentmagnetiserad synkron maskin; FEM simulering; Flux 2D®; design optimering elmaskin; Skattning av ström och styrvinkel; multi-objektiv optimering.;

Abstract: This report summarizes the thesis study carried out at Scania CV AB. The study presents design optimization of an interior permanent magnetic (IPM) synchronous machine. A parameterised Matlab tool was developed in order to serve the optimization routine. In this routine, multiple IPM geometries are dynamically generated and analyzed using the finite element method (FEM) software Flux 2D. Using the Secant method, algorithms to estimate the optimum current and control angle throughout the speed range both below and above base speed, were developed and integrated with the Matlab tool to perform design optimization towards the drive cycle. The genetic algorithm available in the Matlab’s global optimization toolbox has been utilised for the multi-objective optimization setup. 

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