Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines

Bibliographic Details
Main Author:	Bonthu, Sai Sudheer Reddy
Language:	English
Published:	University of Akron / OhioLINK 2015
Subjects:	Electrical Engineering
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=akron1439393220

id	ndltd-OhioLink-oai-etd.ohiolink.edu-akron1439393220
record_format	oai_dc
spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-akron14393932202021-08-03T06:33:01Z Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines Bonthu, Sai Sudheer Reddy Electrical Engineering PMa-SynRMs are similar to interior permanent magnet (IPM) motors in structure but are more economical due to reduced permanent magnets. This thesis presents an optimal design of five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) for low torque ripple applications and its comparison with a three-phase PMa-SynRM. The research on the five-phase PMa-SynRM has been expanded to develop a 15kW integrated starter generator (ISG).In this study, the design of five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) for low torque ripple. PMa-SynRMs are similar to interior permanent magnet (IPM) motors in structure but are more economical due to reduced permanent magnets. In this study, lumped parameter model (LPM) is used in the approach to initially design the five-phase PMa-SynRM. Numerical equations are integrated with the LPM to design the machine with its given range of design parameter values. Thousands of designs are generated by LPM, which are then converged to optimized model using differential evolution strategy (DES). Optimization is done with maximum efficiency and minimum torque ripple as objective. The optimized 3 kW five-phase PMa-SynRM is then analyzed by finite element method (FEM) for fine tuning. Simulation results for back electromotive force (EMF), flux linkage, developed torque, torque ripple, cogging torque, torque speed characteristics and necessary motor parameters such as d and q-axis inductances variation over respective axis currents are verified by fabricated prototype.In addition, comparison of three-phase and five-phase permanent magnet assisted synchronous reluctance motors (PMa-SynRM) in terms of their design and performance characteristics is presented. With higher fault tolerant capability, efficiency, and reliability, the five-phase PMa-SynRM can be a better substitute when compared to the three-phase PMa-SynRM in critical applications where safety is top priority. In this study, for a fair comparison, same design procedure using LPM is followed in developing the three-phase and five-phase PMa-SynRMs. Performance characteristics such as torque pulsation, back-EMF, flux linkage, etc. are intensively simulated through FEM. The optimized three-phase and five-phase PMa-SynRMs are fabricated with the same power rating (3kW) and same volume. Experimental tests are conducted on the prototypes to validate the simulation results. A 15kW five-phase PMa-SynRM integrated starter generator (ISG) has been proposed in this study. Initial model in LPM and procedure to be followed to develop the final optimized model with DES optimizer has been presented. 2015-09-14 English text University of Akron / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=akron1439393220 http://rave.ohiolink.edu/etdc/view?acc_num=akron1439393220 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Electrical Engineering
spellingShingle	Electrical Engineering Bonthu, Sai Sudheer Reddy Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines
author	Bonthu, Sai Sudheer Reddy
author_facet	Bonthu, Sai Sudheer Reddy
author_sort	Bonthu, Sai Sudheer Reddy
title	Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines
title_short	Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines
title_full	Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines
title_fullStr	Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines
title_full_unstemmed	Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines
title_sort	optimal design and comparative analysis of multi-phase permanent magnet assisted synchronous reluctance machines
publisher	University of Akron / OhioLINK
publishDate	2015
url	http://rave.ohiolink.edu/etdc/view?acc_num=akron1439393220
work_keys_str_mv	AT bonthusaisudheerreddy optimaldesignandcomparativeanalysisofmultiphasepermanentmagnetassistedsynchronousreluctancemachines
_version_	1719438581870624768

Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines

Similar Items