High Frequency Three–level Inverter–based Inductive Wireless Power Transfer (IWPT) System with Double LCC Resonance

2021 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2021-06-14 DOI:10.1109/APEC42165.2021.9487225

Tian Luo, T. Mishima, Ching-Ming Lai

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引用次数: 1

Abstract

This paper presents an inductively coupled wireless power transfer (IWPT) system with a new circuit topology featuring three level high frequency inverter (TLHF– INV) and double LCC compensation tank. Different from a conventional IWPT system, this system provides phase shift pulse–width–modulation (PS–PWM) for output power control. Since this system targets an EV charging application, accordingly its operation frequency is defined in 85 kHz by Society of Automotive Engineers (SAE). The proposed IWPT system is analyzed by the state space equations for proving its Lyapunov stability and its anti–interference capability on simulation is given with various load value. The soft switching conditions are discussed such as zero voltage turn–on in outer switches and complete zero current switching in outer switches (Q1 and Q4). Moreover, a hybrid modulation method for tracking the ZCS at inner switches (Q2 and Q3) is mentioned. The performance of the proposed system which is designed for various load is investigated and evaluated by experiment. The experimental results reveal high conversion efficiency and certain loss reduction with variable frequency VFPS–PWM.

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基于高频三电平逆变器的双LCC共振感应无线输电系统

本文提出了一种采用三电平高频逆变器(TLHF - INV)和双LCC补偿槽的新型电路拓扑结构的感应耦合无线电力传输系统。与传统的IWPT系统不同，该系统提供相移脉宽调制(PS-PWM)来控制输出功率。由于该系统的目标是电动汽车充电应用，因此其工作频率被汽车工程师协会(SAE)定义为85khz。利用状态空间方程对所提出的IWPT系统进行了分析，证明了系统的李雅普诺夫稳定性，并给出了系统在不同负载值下的抗干扰能力。讨论了外开关的零电压导通和外开关(Q1和Q4)的完全零电流开关等软开关条件。此外，还提出了一种用于跟踪内部开关(Q2和Q3) ZCS的混合调制方法。通过实验对该系统的性能进行了研究和评价。实验结果表明，变频vps - pwm具有较高的转换效率和一定的损耗降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2021 IEEE Applied Power Electronics Conference and Exposition (APEC)

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