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Energies 2016, 9(11), 937; doi:10.3390/en9110937

Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

1
Power Electronics and Renewable Energy Research Laboratory (PEARL), Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
2
School of Engineering, Deakin University, Waurn Ponds, VIC 3216, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Chunhua Liu
Received: 8 August 2016 / Revised: 22 October 2016 / Accepted: 25 October 2016 / Published: 10 November 2016
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)
View Full-Text   |   Download PDF [3399 KB, uploaded 10 November 2016]   |  

Abstract

The inductive power transfer (IPT) system for electric vehicle (EV) charging has acquired more research interest in its different facets. However, the misalignment tolerance between the charging coil (installed in the ground) and pick-up coil (mounted on the car chassis), has been a challenge and fundamental interest in the future market of EVs. This paper proposes a new coil design QDQ (Quad D Quadrature) that maintains the high coupling coefficient and efficient power transfer during reasonable misalignment. The QDQ design makes the use of four adjacent circular coils and one square coil, for both charging and pick-up side, to capture the maximum flux at any position. The coil design has been modeled in JMAG software for calculation of inductive parameters using the finite element method (FEM), and its hardware has been tested experimentally at various misaligned positions. The QDQ coils are shown to be capable of achieving good coupling coefficient and high efficiency of the system until the misalignment displacement reaches 50% of the employed coil size. View Full-Text
Keywords: electric vehicle (EV); inductive power transfer (IPT); misalignment tolerance electric vehicle (EV); inductive power transfer (IPT); misalignment tolerance
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MDPI and ACS Style

Kalwar, K.A.; Mekhilef, S.; Seyedmahmoudian, M.; Horan, B. Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging. Energies 2016, 9, 937.

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