A Novel Rotor Topology for High-Performance Fractional Slot Concentrated Winding Interior Permanent Magnet Machine

This article presents a finite-element-based, multiobjective design optimization study of the fractional-slot, concentrated wound, permanent magnet synchronous machine (FSCW PMSM). Design objectives included maximization of efficiency, minimization of cost and low ripple without sacrificing torque d...

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Published in:IEEE transactions on energy conversion 2021-06, Vol.36 (2), p.658-670
Main Authors: Dutta, Rukmi, Pouramin, Alireza, Rahman, Muhammed F.
Format: Article
Language:English
Subjects:
concentrated winding
Density
Design optimization
electric machine
Electric vehicles
Fractional slot
interior permanent magnet machine
IPMSM
Minimum cost
Multiple objective analysis
Permanent magnets
PMSM
Power capacitors
Ripples
Rotors
Stators
Synchronous machines
Topology
Torque
Torque measurement
Windings
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creator Dutta, Rukmi
Pouramin, Alireza
Rahman, Muhammed F.
description This article presents a finite-element-based, multiobjective design optimization study of the fractional-slot, concentrated wound, permanent magnet synchronous machine (FSCW PMSM). Design objectives included maximization of efficiency, minimization of cost and low ripple without sacrificing torque density and wide constant power speed range. A large-scale optimization study revealed that while a V-type rotor provides high torque density, a spoke-type rotor has the benefit of low torque ripple. Quest for a design that can combine the goodness of both V- and spoke type rotors for an FSCW stator has led to a novel interior permanent magnet rotor topology referred here as Y-type. The goals of achieving maximum efficiency, minimum cost and wide CPSR were also accomplished in the proposed Y-type FSCW IPMSM. For experimental verification purpose, three fully optimized rotors - V-, spoke- and Y-type were constructed for a 12-slot/10-pole FSCW stator. Extensive experimental tests were conducted on three machines for a detailed comparison study. It will be shown that the proposed Y-type FSCW IPMSM outperforms both V and spoke-type configurations. A scaled-up version of the Y-type FSCW IPMSM shown to have satisfied many of the Freeedomcar 2020 targets, which is promising for application in electric vehicles.
doi_str_mv 10.1109/TEC.2020.3030302
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source IEEE Electronic Library (IEL) Journals
subjects concentrated winding
Density
Design optimization
electric machine
Electric vehicles
Fractional slot
interior permanent magnet machine
IPMSM
Minimum cost
Multiple objective analysis
Permanent magnets
PMSM
Power capacitors
Ripples
Rotors
Stators
Synchronous machines
Topology
Torque
Torque measurement
Windings
title A Novel Rotor Topology for High-Performance Fractional Slot Concentrated Winding Interior Permanent Magnet Machine
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