Title: Design of dual winding permanent magnet synchronous machines for hybrid electric vehicle accessory drives

Authors: Erkan Mese; Murat Ayaz; Murat Tezcan; Kadir Yilmaz

Addresses: Department of Electrical Engineering, Yildiz Technical University, Istanbul, 34220, Turkey ' Department of Electrical Education, Kocaeli University, Kocaeli, 41380, Turkey ' Department of Electrical Engineering, Yildiz Technical University, Istanbul, 34220, Turkey ' Department of Electrical Education, Kocaeli University, Kocaeli, 41380, Turkey

Abstract: This paper presents a new accessory drive system for hybrid electric vehicles (HEVs). This new concept involves a dual winding electric machine with simultaneous motor and generator functions. The electric machine provides power for all accessory loads such as the steering pump, compressors and 12 V loads. When the engine is off, the electric machine starts its motoring action and provides mechanical power to the accessory loads. Simultaneously, the generator windings provide power for the 12 V loads. The proposed structure could be a viable choice for fault-tolerant applications because of the concentrated winding type that maintains electrical and magnetic isolation. Design considerations of the proposed electric machine are outlined in the paper. The distributed winding topology and concentrated winding topologies are also compared. Analytical proof of magnetic decoupling is presented and experimentally verified.

Keywords: electric machine design; dual winding PMSM; permanent magnet synchronous motors; concentrated winding; conformal mapping; analytical magnetic decoupling; fault tolerance; drive by wire; hybrid electrical vehicles; HEVs; hybrid vehicles; accessory drives.

DOI: 10.1504/IJVD.2015.073121

International Journal of Vehicle Design, 2015 Vol.69 No.1/2/3/4, pp.185 - 207

Received: 13 Oct 2014
Accepted: 29 Mar 2015
Published online: 20 Nov 2015 *

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