摘要
感应耦合能量传输(inductively coupled power transfer,ICPT)系统中补偿网络能够改善系统特性,目前针对谐振补偿网络的输出电流和电压特性没有一种简单易行的分析模型。首先分析了LC电路、??型电路和T型电路实现与负载无关的恒流或恒压输出的谐振条件,并针对高阶无源谐振网络提出一种建模方法,通过将谐振网络等效成2阶LC网络和多级3阶???型电路或多级3阶T型电路的串联,研究其恒流或恒压输出的物理机理。ICPT系统中双边LCC谐振腔实质上是一个9阶谐振网络,基于所提建模方法,分析双边LCC谐振腔输出电流和电压特性。此外,提出仅切换一次系统工作频率便可以实现系统先恒流再恒压输出的方法,且恒流和恒压模式下系统工作频率均满足SAEJ2954标准要求,分别能实现谐振腔输入电压、电流之间的零相角和原边逆变器MOSFETs的零电压开通。搭建3.3kW电动汽车感应耦合能量传输系统的Matlab仿真平台和实验样机,验证理论分析的正确性和可行性。恒流和恒压模式下实验样机谐振腔的效率分别为92.1%和89.7%。
Compensation networks can be used to improve the system characteristics of an inductively coupled power transfer(ICPT)system,however,there is no a simple method to analyze its output current and voltage.This paper investigated the resonant conditions of the LC circuit,?-circuit,and T-circuit,and proposed a modeling method for high-order resonant network to achieve load-independent constant current(CC)or constant voltage(CV)output.Higher-order resonant networks are equivalent to series connection of LC network and multi-stages?-circuit or multi-stages T-circuit.Double-sided LCC resonant tank circuit in ICPT system is actually a ninth-order resonant network.Based on the proposed modeling method,output characteristics of the double-sided LCC resonant tank circuit were analyzed.And a variable frequency control method for inductive electric vehicle(EV)charging was proposed to realize constant current-constant voltage charging profile.In CC and CV modes,the operating frequencies are compatible with the SAE J2954 standard and the zero phase angle(ZPA)between the input voltage and current of resonant tank circuit and zero voltage switching(ZVS)for all primary side MOSFETs of the primary side DC/AC converter can be achieved,respectively.The Matlab simulation and experimental prototype of ICPTs with up to 3.3 kW transfer power for EV charging application were designed and developed to validate the analysis.The efficiencies of the double-sided LCC resonant tank circuit are92.1%and 89.7%in CC and CV modes,respectively.
作者
陆江华
朱国荣
黎文静
李博
姜晶
LU Jianghua;ZHU Guorong;LI Wenjing;LI Bo;JIANG Jing(School of Automation,Wuhan University of Technology,Wuhan 430070,Hubei Province,China;Department of Electrical and Computer Engineering,Western University,Ontario N6A3K7,Canada)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第9期2768-2778,共11页
Proceedings of the CSEE
基金
国家自然科学基金项目(51777146)~~
关键词
恒流
恒压
感应耦合能量传输
电动汽车
零相位角
零电压开关
constant current
constant voltage
inductively coupled power transfer
electric vehicle(EV)
zero phase angle(ZPA)
zero voltage switching(ZVS)
作者简介
陆江华(1989),男,博士,研究方向为无线能量传输技术、谐振变换器,tri_ljh@whut.edu.cn;朱国荣(1975),女,博士,副教授,研究方向为无线能量传输系统的应用与研究、电力电子电能变换系统可靠性研究,zhgr_55@whut.edu.cn。
