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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Analysis, Design, and Implementation of Accurate ZVS Angle Control for EV Battery Charging in Wireless High-Power Transfer
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Analysis, Design, and Implementation of Accurate ZVS Angle Control for EV Battery Charging in Wireless High-Power Transfer

机译：无线大功率传输中的EV电池充电精确ZVS角度控制的分析，设计和实现

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摘要

To acquire high efficiency and reduce electromagnetic interference in wireless high-power charging for electric vehicles (EVs), it is of great importance to realize accurate zero voltage switching angle (ZVSA) control of the inverter. However, the traditional zero-crossing detection cannot be applied in high power because of considerable noise and poor accuracy in wide power range applications. In this paper, to suppress the noise in high power, a current hysteresis comparator is adopted, and an enhanced phase detection methodology is proposed to measure the phase of resonant current by using a reference signal produced by a processor. Meanwhile, to improve the accuracy of ZVSA, a uniform time delay compensation method (UTDCM) by considering the whole time delays synthetically is proposed, and a uniform time delay equation can be obtained to guarantee the high accuracy of phase detection, especially in the wide power range. Finally, a novel control strategy with the ZVSA loop based on UTDCM is proposed for battery charging in wireless high-power transfer system. A 500-W wireless power transfer prototype is built to verify the accuracy of ZVSA based on UTDCM and the system efficiency can achieve 94.17% with k = 0.22.
机译：为了在电动汽车（EV）的无线大功率充电中获得高效率并减少电磁干扰，实现逆变器的精确零电压开关角（ZVSA）控制非常重要。但是，由于过大的噪声和较差的精度在宽功率范围的应用中，传统的过零检测无法应用于高功率。为了抑制大功率噪声，本文采用电流滞环比较器，并提出了一种增强型相位检测方法，该方法利用处理器产生的参考信号来测量谐振电流的相位。同时，为提高ZVSA的精度，提出了一种综合考虑整体时延的统一时延补偿方法（UTDCM），可以得到统一的时延方程，以保证相位检测的高精度，特别是在宽广范围内。功率范围。最后，提出了一种基于UTDCM的ZVSA环路控制策略，用于无线大功率传输系统中的电池充电。构建了一个500瓦的无线功率传输原型，以验证基于UTDCM的ZVSA的准确性，并且在k = 0.22的情况下，系统效率可以达到94.17％。

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