Online regulation of receiver-side power and estimation of mutual inductance in wireless inductive link based on transmitter-side electrical information

Chow, Jeff Po Wa; Chung, Henry Shu-Hung; Cheng, Chun Sing

doi:10.1109/apec.2016.7468111

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…All results obtained by different approaches were in excellent agreement [16]. Chow et al [17] introduced a new way to estimate the mutual inductance between two planar circular coils using the TX‐side electrical information and the power consumption of the RX side.…”

Section: Introductionmentioning

confidence: 86%

Analytical calculations of self‐ and mutual inductances for rectangular coils with lateral misalignment in IPT

Huang

Yang

et al. 2019

IET Power Electronics

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Rectangular coils are widely used in inductive power transfer (IPT), and the self-and mutual inductances of them are key system parameters. However, the study of the rectangular coil is not enough. In this study, a series of unified analytical formulae for the self-and mutual inductance calculations of a variety of rectangular coils including filamentary coils, pancake coils and thin-or thick-walled solenoids are presented. Various positions of the rectangular coils above are discussed, and the mutual inductance formulae in the case of co-axis, co-plane, misalignment and even overlapping are given. Finally, the experimental measurements are carried out on various types of rectangular coils. The experimental results agree well with the calculated ones, which indicate the effectiveness of the proposed method. Therefore, this study provides an interesting tool for designing the transceiver of rectangular coils in IPT system.

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Section: Introductionmentioning

confidence: 86%

Analytical calculations of self‐ and mutual inductances for rectangular coils with lateral misalignment in IPT

Huang

Yang

et al. 2019

IET Power Electronics

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“…However, the method is not suitable for multi-transmitter systems because individual mutual inductance cannot be recognized. Therefore, primary-side electrical information such as inverter output voltage and current are used to calculate mutual inductance based on SS topology in [26], [27], as well as LCL-P topology in [28]. However, for DS-LCC topology, the distorted current waveform which seriously reduces estimation accuracy at low mutual inductance is not studied.…”

Section: B Mutual Inductance Estimation Using Primary-side Electrical Informationmentioning

confidence: 99%

Interoperability Improvement for Wireless Electric Vehicle Charging System Using Adaptive Phase-Control Transmitter

et al. 2019

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Poor interoperability between the rectangular coil and DD coil leads to significant decline in transmission power and efficiency. This paper proposes an adaptive phase-control transmitter (APCT) which is interoperable with different receiving coils for wireless electric vehicle charging (WEVC). First, an optimized bipolar (BP) coil is designed and APCT is capable of generating different flux distributions for different receiving coils. Second, inverter output currents' detection is used to identify the type of receiving coils. Third, mutual inductance is estimated using the primary-side electrical information. Finally, constant current (CC) charging, as well as efficiency optimization method, is introduced. With an X offset and a Y offset of 50 mm, an experimental setup achieves 3-A CC charging for both rectangular and DD receiving coils. The experimental results agree with the theoretical analysis, demonstrating that the proposed APCT is able to improve interoperability with different types of receiving coils.INDEX TERMS Interoperability, rectangular coil, DD coil, adaptive phase-control transmitter, mutual inductance estimation.

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Fundamentals of Wireless Power Transfer

2019

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Online regulation of receiver-side power and estimation of mutual inductance in wireless inductive link based on transmitter-side electrical information

Cited by 7 publications

References 14 publications

Analytical calculations of self‐ and mutual inductances for rectangular coils with lateral misalignment in IPT

Analytical calculations of self‐ and mutual inductances for rectangular coils with lateral misalignment in IPT

Interoperability Improvement for Wireless Electric Vehicle Charging System Using Adaptive Phase-Control Transmitter

Fundamentals of Wireless Power Transfer

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