General Current Control of Six-Phase-Based Non-Isolated Integrated On-Board Charger with Low Order Harmonic Compensation

Mahmoud S. Abdel-Majeed, Abdullah Shawier, Ayman S. Abdel-Khalik, Mostafa S. Hamad, Mohamed M. Sedky and Noha A. Elmalhy
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Mahmoud S. Abdel-Majeed: Department of Electrical Engineering, Alexandria University, Alexandria 21544, Egypt
Abdullah Shawier: Department of Electrical Engineering, Alexandria University, Alexandria 21544, Egypt
Ayman S. Abdel-Khalik: Department of Electrical Engineering, Alexandria University, Alexandria 21544, Egypt
Mostafa S. Hamad: Department of Electrical and Control Engineering, Arab Academy for Science, Technology and Maritime Transport, Alexandria 21913, Egypt
Mohamed M. Sedky: Department of Electrical Engineering, Alexandria University, Alexandria 21544, Egypt
Noha A. Elmalhy: Department of Electrical Engineering, Alexandria University, Alexandria 21544, Egypt

Sustainability, 2022, vol. 14, issue 3, 1-20

Abstract: Electric vehicle charging technology has recently witnessed massive developments due to its significant role in the ever-growing number of electric vehicles on the market. The integrated on-board charger technology (IOBC) represents an effective and attractive solution to reduce EV size, cost, and weight. IOBC technology employs propulsion components, such as the motor and its converter, in the charging process. The main objective of IOBC is to achieve the maximum charging current with zero average/pulsating torque so that mechanical interlocking can be dispensed. Recently, some of the IOBC topologies have adopted machines with six-phase stators to exploit the many advantages of multiphase-based systems. This paper investigates the effect of the winding design, namely, chorded or un-chorded designs, as well as the winding configuration, namely, dual three-phase, asymmetrical, or symmetrical winding configurations, on the current quality of a six-phase-based non-isolated IOBC. The relation between the winding design and the induced low order harmonics in the charging current is first clarified. The required current controller structure is then proposed, which ensures balanced grid line currents with high quality, under either healthy or one-phase fault conditions. Finally, a comparative study between all available designs with the proposed current controller is carried out to validate the theoretical findings.

Keywords: six phase; dual three-phase; asymmetrical six-phase; symmetrical six-phase; low order space harmonics; magneto-motive force; harmonic compensation; PR controller; battery charging; integrated onboard battery chargers (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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