感应耦合电能传输系统输出功率调节方法  

Output Power Adjustment in Inductively Coupled Power Transfer System

作　　者：蔡华[1,2] 史黎明[1] 李耀华[1] 

机构地区：[1]中国科学院电工研究所电力电子与电气驱动重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《电工技术学报》2014年第1期215-220,共6页Transactions of China Electrotechnical Society

基　　金："十一五"国家科技支撑计划课题"高速磁浮交通系统关键技术攻关与创新研究"(2007BAG02A04)资助项目

摘　　要：高效调节输出功率是感应耦合电能传输系统的关键问题之一。文章分析了调幅、调频、移相以及能量注入控制四种基本功率调节方法的工作原理及其特征。根据移相控制改变逆变器移相角调节输出功率的特点,提出了一种新型基于谐波的移相控制功率调节方法,推导了从基波切换为各次谐波的移相角以及各次谐波工作下合理的移相角范围。该方法采用谐波替代基波传递功率,在输出同样功率情况下可降低器件开关频率。本文以3次谐波为例,通过实验验证了新型功率调节方法的有效性。High efficiency output power adjustment is one of the key issues for inductively coupled power transfer（ICPT） system. Principle as well as characteristics of four basic output power adjustment methods - pulse amplitude modulation（PAM）, pulse frequency modulation（PFM）, phase-shifted control （PSC）, and energy injection control（EIC） are analyzed and compared. According to the feature of PSC that system output power is regulated by shifting phase of inverter, a novel output power adjustment method by harmonic based phase-shifted control（HPSC） is proposed. The phase-shifted angle and reasonable operation range of different harmonics in HPSC are derived. The harmonic of inverter output voltage is used in power transfer instead of fundamental, which can decrease switching frequency for the same output power. The feasibility of the proposed method was verified by experimental results taking third harmonic for example.

关 键 词：感应耦合电能传输 功率调节 基波 谐波 移相控制 开关频率 

分 类 号：TM46[电气工程—电器]