A New Type of Wireless V2H System with a Single-Ended Converter Controlled by Resonant Selector and Voltage Changer
A New Type of Wireless V2H System with a Single-Ended Converter Controlled by Resonant Selector and Voltage Changer
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DOI：
10.1109/icecie50279.2020.9309695
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
Tatsuya Takahashi;H. Omori;M. Tsuno;T. Morizane;Hidehito Matayoshi
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文献类型：
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作者：
Tatsuya Takahashi;H. Omori;M. Tsuno;T. Morizane;Hidehito Matayoshi
本文设计了一种满足SAE J2954无线充电器国际标准的单端转换器双向WPT。该双向转换器由单端驱动，仅由一个功率开关器件驱动，便于实际使用。实现了一个轻量化、低成本、结构紧凑的系统。之前的系统有两个问题。其一是单端变流器的传输功率随电路参数的微小变化而变化很大。第二，无法将发射功率控制在国际标准的85 kHz频段内。理论分析表明，传输功率的控制因素是馈电侧和受电侧的相位差。为解决这一问题，提出了一种谐振电容选择器。仿真结果表明，与以往的控制方法相比，该控制方法具有较强的鲁棒性。针对功率控制范围较窄的问题，提出了谐振电容选择器与电源电压转换器相结合的控制方法。实验证明，该控制方法能在85 kHz频段内保证0~6kW的控制范围。此外，为了降低成本，只提出了家庭侧电源电压转换器。因此，无线V2H系统采用单端转换器和新开发的控制器，在国际标准下实现了生产率、兼容性和可控性。
In this report, a bidirectional WPT with a single-ended converter is constructed that satisfies the international standard of SAE J2954 for wireless EV charger. The bidirectional converter is consists of a single-ended driven by only one power switching device for practical use. It is realized a system of lightweight, low-cost and compact configurations. Previous system had two problems. One is that the transmission power varies drastically depending on the slight variations of the circuit parameter in single-ended converter. Second is that it is not possible to control the transmission power within the 85kHz band of the international standard. The theoretical analysis reveals that the control factor of transmission power is the phase difference between the power feeding side and power receiving side. A resonant capacitor selector is proposed to solve the low robustness. It is proved in simulation that high robustness is ensured compared to previous system in this control method. A combination control method of resonant capacitor selector and supply voltage changer is proposed to solve the narrow power control range. It is verified in experiment that control range of 0~6kW is ensured under 85kHz band in this control method. Moreover, only home side supply voltage changer is proposed to lower cost. Thus, wireless V2H system with a single-ended converter with a newly developed controller is realized productivity, compatibility and controllability under the international standard.