A Single-Phase Integrated Power Charger Considering High-Frequency Behavior for Two Motor Drives Fed Electric Vehicles

This article introduces a fully integrated power charger (IPC) system designed for multimotor electric vehicles (EVs). The multimotor drive system, known for its superior acceleration and power capabilities, demands efficient and high-power charging solutions. The high-power charging capability is achieved by utilizing both motor and inverter modules as an IPC, which is an inherent feature of multimotor drive system. In the proposed IPC system, both traction inverter and machine winding are utilized without any modification or reconfiguration in the power circuit. This article also delves into the high-frequency behavior of machine inductance variation during IPC operation, which is critical for understanding winding behavior at the switching frequency. The proposed system is validated through MATLAB/Simulink and a laboratory prototype across various power levels. Efficiency and power quality are assessed by monitoring input power factor (PF) and total harmonic distortion, aligning the system with IEEE 519-2022 standards. The proposed system is characterized by notable features, such as the absence of additional hardware requirements and compatibility with a single-phase 230-V, 50–60-Hz power outlet. The results prove the viability and reliability of the proposed IPC operation with the two-motor drivetrain system.