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

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. E. Mese et al.

Three-Phase Dual-Winding Multitasked PMSM Machine Using Double Layer Concentrated Winding for HEV Application

“…The star of slot describes the information about winding and the phasors of induced electromotive force (EMF) [12,16].…”

“…The overlapping nature of winding exhibits a higher mutual coupling effect making it a poor choice for the independent operation of motor and generator. For such operations, the dual winding PM machines using a specific arrangement of nonoverlapped nature have been studied in [9,10,11,12]. This type of winding benefits the shorter end windings, high slot fill factor, and flexible control to improve the performance [13].…”

PMSG-Based Dual-Port Wind-Energy Conversion System With Reduced Converter Size

“…For example, electric aircraft and micro-grid systems prioritize reliability in addition to high efficiency and compactness [3]. Furthermore, some applications focus on operating individual machines in different modes [8], [9]. In these modes, the machine may operate as a motor and generator, either simultaneously or independently.…”

Stable Control Scheme for Electric Vehicles Based on Uncertainty Compensation with Adaptive Neural Networks

“…Since the management of energy in electric vehicles is a significant issue that presents a major challenge, any development in this direction encourages the use of these vehicles (Zhang et al 2020;Schwickarta et al 2015). In addition, the relatively limited space for installing a motor in the EVs and high efficiency, fluxweakening capability needed to produce an efficiency torque let the permanent magnet synchronous motor (PMSM) the most suitable motor for this type of application, disregarding their uncertainty and strong nonlinearity (Mese et al 2015). Therefore, researchers have developed PMSM design structures and control strategies to obtain remarkable performances compared to combustion engines (Soylu 2017).…”

“…The rapid evolution in material performance like fluxweakening capability has led to a remarkable improvement in design structure of PMSM, and thanks to the quality of research done in this field by Mese et al (2015) and Soylu (2017), PMSM has also a high starting torque for initial acceleration, high power density and high efficiency to extend the battery range, and a wide operating speed range to facilitate single gear transmission (Soylu 2017). PMSM-based EVs can also overcome the effect of its mass called road load, roadway gradient, rolling resistance, aerodynamic drag coefficients and vehicle velocity and acceleration (Soylu 2017).…”