Torque control for a flux-switching permanent-magnet motor based on FEM data

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final_Donazzolo_Riccardo_2018.pdf (4.15 MB)

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Sähkötekniikan korkeakoulu |
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Date

2018-08-20

Department

Major/Subject

Electric drives

Mcode

ELEC-E8405

Degree programme

AEE - Master’s Programme in Automation and Electrical Engineering (TS2013)

Language

en

Pages

53

Series

Abstract

Flux-switching permanent-magnet (FSPM) motors development became important to the manufacturing companies due to their high torque density and robustness. Moreover the control methods for electric motors are in continuous evolution in order to minimize the losses caused by the drives and to optimize the computational costs. In this final project a 2.2-kW FSPM machine is considered. The aim of this project is to estimate the parameters from FEM data and to use them to parametrize the motor and the control system. All these data are first computed with a FEM software. Then a simplified parameterization that neglects the cross-coupling and saturation is used for the control system. Particularly, the collected data are also needed in order to build the look-up tables for the reference calculation, essential for having an efficient control design with a low computational cost. In order to obtain maximum torque taking into account the current and voltage limits, the maximum torque per ampere (MTPA), maximum torque per volt (MTPV) and field weakening (FW) strategies are employed. The final simulation scheme is a control system with a simple parameterization and a plant model which includes saturation and cross-coupling. Hence the error caused by the neglected saturation and the performance of the control system are analyzed.

Description

Supervisor

Hinkkanen, Marko

Thesis advisor

Hinkkanen, Marko

Keywords

torque control, finite element analysis, flux-switching permanent-magnet, look-up tables, current control, discrete-time

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https://urn.fi/URN:NBN:fi:aalto-201809034786

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[final] Final projects