Abstract
Electric vehicles (EVs) are now becoming a reliable option in transport applications. Multi-phase machines, having advantages over their three phase counterparts, are gaining attention in the recent times. This paper investigates the comprehensive field weakening operation (FWO) of pentagon connected five phase induction machines (PC-FPIM) with electric vehicle as load application. The pentagon connection is chosen as it is superior to that of star in terms of attaining lower copper loss and obtaining maximum achievable torque. The PC-FPIM along with EV load, is run up to more than 1.5 times that of its rated speed which indicates that the drive is operating in constant power region (CPR). The rapid increase of acceleration/deceleration of the vehicle enables the machine to exceed its thermal loading limits. Consequently, a discussion on derating is articulated in which a simple yet effective trial and error-based technique is proposed to ensure the safe thermal loading capability of the machine. Thus, the dynamic model of electric vehicle fed PC-FPIM is presented and an appropriate fault tolerant control strategy (FTCS) is applied to restore balance to the system. The simulations are carried out in "MATLAB, Simulink (MathWorks, Natick, Massachusetts, USA)" and the results supported the aforementioned statements.
Cite this article as: Jahera S, Chudamani R. and C. P. Gor, "Field weakening operation of pentagon connected FPIM under open phase fault with electric vehicle load," Electrica, 24(3), 574-588, 2024.