Interrupt-Free Operation of Dual-Motor Four-Wheel Drive Electric Vehicle Under Inverter Failure

Abstract

This paper presents a new open-ended winding induction motor (OEWIM) based dual-motor differential fourwheel drive (D4WD) for the electric vehicle (EV). Constant speed operation through cruise control is achieved using direct torque control (DTC) algorithm. The redundant vectors are used in the switching vector selection of the DTC algorithm to achieve balanced battery currents. Fault-tolerant operation of the drive is demonstrated, where the EV will work with full torque even if one of the inverters in rear motor drive or front motor drive or both fail. The dynamic model of the proposed drive is presented. The proposed drive and fault-tolerant operation (FTO) is verified through simulation as per the FTP-75 driving cycle. An experimental prototype of the proposed drive is developed, and the above algorithms are verified experimentally as per the FTP-75 and HFET driving cycles. Both the simulation as well as the experimental results are presented, and these results agree with the theoretical observations. Stable operation of EV for the entire test cycle under normal operation, as well as inverter fault conditions, is demonstrated.

Predictive Control With Battery Power Sharing Scheme for Dual Open-End-Winding Induction Motor Based Four-Wheel Drive Electric Vehicle

“…Also, in the event of any one motor failure, the D4WD can be run as FWD or RWD accordingly. So in this paper, EV with D4WD based on two OEWIM drives is considered [16] and the corresponding drive arrangement is shown in Fig. 1.…”

“…Direct torque control (DTC) is are suitable in EV applications because of the rapid and accurate torque response and avoid uncertainties over parameter variation. In addition, DTC has less computational complexity than other control techniques and does not need variables to be decoupled and matrix transformation [10], [16]- [18]. The DTC based OEWIM D4WD for EV with dual isolated battery packs (BPs) is given in [16].…”

“…In addition, DTC has less computational complexity than other control techniques and does not need variables to be decoupled and matrix transformation [10], [16]- [18]. The DTC based OEWIM D4WD for EV with dual isolated battery packs (BPs) is given in [16]. In addition to normal operation, this drive train has some attractive features like lower DC bus voltage and ability to generate full torque when one of the inverters powering the front OEWIM (FM) and rear OEWIM (RM) fails.…”

“…Both battery packs require proportional power sharing and even discharging at the same voltage level to achieve excellent driving performance. This paper addresses these issues and improves the performance of the drive given in [16].…”

Iron-Loss Modeling With Sensorless Predictive Control of PMBLDC Motor Drive for Electric Vehicle Application

“…Electric transportation is gaining momentum as it will overcome problems due to conventional vehicles such as global warming, resource shortages and environmental pollution. The main tools for the development of electrification of transportation system include exterior design, controller design, motor drives system, energy and power management processes, and system integration [1], [2]. The motor drive system is a key element for electric vehicle (EV) propulsion system since it is the predominant source of power in the EV [3].…”