感应耦合电能传输系统动态解谐传输功率控制  

Transferred power regulating method with a dynamically detuning inductor for ICPT pickups

作　　者：杨民生[1,2] 王耀南[2] 

机构地区：[1]湖南文理学院电气与信息工程学院,湖南常德415000 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电机与控制学报》2012年第1期72-78,共7页Electric Machines and Control

基　　金：国家自然科学基金(61104088);国家科技支撑计划资助(2008BAF36B01)

摘　　要：提出一种感应耦合电能传输(ICPT)系统的动态解谐传输功率控制方法。对相控电抗器进行动态切换,通过改变其导通延迟角来改变导通电流大小,使得ICPT系统的电能拾取侧谐振或解谐,在负载端获得稳定的输出电压,同时实现对传输功率的控制。导出了动态切换的相控电抗器的等效电感,分析了等效电感对输出电压及传输功率的控制作用。根据负载稳定时输出电压与导通延迟角之间的变化曲线获得了保持输出电压恒定的控制方法。相控可变电抗器实现了软开关动态切换,有效地降低了系统的功率损耗。利用该动态谐振/解谐控制方法,系统的最大功率传输性能得到了保证。计算机仿真结果验证了该方法的优良传输功率控制性能。This paper presents a method for regulating the transferred power to IClYF pickups. A phase- controlled variable inductor was dynamically switched by changing conduction delay angles, and the pick- up circuit was tunned or detuned to maintain constant output voltage and regulate the transferred power. The equivalent inductance of the phase-controlled inductor was derived out. Effect of the detuned inductance in regulating output voltage and the transferred power was systematically analyzed. The control method for a constant output voltage was obtained using the variation curve between the output voltage and the delay angle. The resonant circuit parameters of the power pickup were deliberately designed. Soft switching was achieved in controlling the phase-controlled inductor. Power losses were reduced significantly and maximum power transfer capability was unaffected. Simulations are carried out and the results show that with the proposed method, a significant improvement is achieved in regulating transferred power under variable load ratings.

关 键 词：感应耦合电能传输 传输功率控制 动态谐振/解谐 相控电抗器 软开关 

分 类 号：TM724[电气工程—电力系统及自动化]