导抗变换器在感应耦合电能传输中的应用  

Application of immittance converter on inductively coupled power transfer system

作　　者：蓝建宇[1] 唐厚君[1] 陆亭华[1] 

机构地区：[1]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《电机与控制学报》2013年第10期7-12,共6页Electric Machines and Control

基　　金：国际热核聚变实验堆计划专项(2011GB113005);国家自然科学基金(51277120)

摘　　要：对于低阶补偿的感应耦合电能传输系统,松耦合变压器原边电流对负载变化敏感,这使得输出功率不稳定。针对这一问题提出一种基于导抗变换器原理的补偿拓扑。当系统工作频率为副边自然谐振频率时,松耦合变压器的原边绕组电流在负载变化时能够保持恒定。这使得感应耦合电能传输系统能较好应用于电流型负载。首先,介绍感应耦合系统工作原理并运用互感耦合理论建立了系统的阻抗模型。在此基础上,推导感应耦合电能传输系统工作于电流源特性的条件,然后讨论主要参数变化对松耦合变压器原边电流及电压增益的影响;并以体积最小为优化目标,介绍基于导抗变换器的感应耦合电能传输系统的优化设计过程。最后,仿真结果和实验数据验证了理论分析的正确性。For an inductively coupled power transfer system with low order compensated topology, the primary current of contactless transformer is sensitive to the variety of load. This causes the output power to be unstable. Aiming at solving this problem, an inductively coupled power transfer system with immittance converter was proposed. When the inductively coupled system operates at the nature resonant frequency of the secondary side, the primary side winding current will be constant at different loads with immittance converter. This is helpful for loads which need the current source. At first, the principle of inductively coupled power transfer system was introduced, and the impedance model was established by means of mutual inductance theory as well. Based on this, the condition of operation with constant current was deduced. Then, main parameters about the primary side current and the voltage gain was discussed. Furthermore, an optimization design method for achieving maximum power density of this system was proposed. Finally, simulation and experiment results verified the theoretical analysis.

关 键 词：感应耦合 电能传输 松耦合变压器 导抗变换器 谐振频率 

分 类 号：TM74[电气工程—电力系统及自动化]