The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Zero-Phase Angle Frequency Tracking Control of Wireless Power Transfer System for Electric Vehicles using Characteristics of LCCL-S Topology

LCCL-S 토폴로지 특성을 이용한 전기자동차용 무선충전시스템의 ZPA 주파수 추종 제어

  • Received : 2020.08.04
  • Accepted : 2020.08.26
  • Published : 2020.10.20
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Abstract

Inductive power transfer (IPT) systems for electric vehicles generally require zero phase angle (ZPA) frequency tracking control to achieve high efficiency. Current sensors are used for ZPA frequency tracking control. However, the use of current sensors causes several problems, such as switching noise, degrading control performance, and control complexity. To solve these problems, this study proposes ZPA frequency tracking control without current sensors. Such control enables ZPA frequency tracking without real-time control and achieves stable zero voltage switching operation closed to ZPA frequency within all coupling coefficient and load ranges. The validity of the proposed control algorithm is verified on LCCL-S topology with a 3.3 kW rating IPT experimental test bed. Simulation verification is also performed.

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References

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