【作者】 张旭；

【导师】 孟国营；

【作者基本信息】 中国矿业大学（北京） ， 机械电子工程， 2011， 博士

【摘要】 本文研究了感应耦合式无线电能传输系统(ICPT)基本[作原理,对系统的主要组成部分松耦合变压器与传统变压器进行比较,建立了松耦合变压器的互感等效模型,并对其电磁结构性能进行了分析。为了增大磁场强度,提高感应电压,根据变压器的工作原理,本文提出了将初级线圈替换为旋转磁铁与次级线圈相耦合的方法,通过理论分析和仿真研究,分析了该种耦合方式下接收线圈的大小对感应电压和传输功率的影响。为减小漏感的影响,本文分析了单边和双边补偿拓扑结构的耦合系数和次级品质因数变化对电压增益、电流增益和功率传输效率的影响,对不同补偿结构进行了对比,同时,利用PSpice仿真软件,对四种拓扑电路进行了仿真分析。由于双边补偿使系统阶数升高而发生频率分义现象,本文分析了不同补偿拓扑结构发生频率分义现象的条件,并通过仿真分析了使开关管工作在软开关状态的工作频率,为ICPT系统设计过程中免发生频率分叉现象以及减小开关损耗提供了理论依据。更多还原

【Abstract】 This dissertation focuses on the basic working principle of Inductive Coupled Power Transfer (ICPT) system, comparing the loosely coupled transformer, which is the mainly component of the system, with the traditional transformer, building the mutual model of the loosely coupled transformer and analyzing the performance of the electromagnetic structure. In order to get a stronger magnetic field and a higher inductive voltage, a new coupling method between a rotating magnet and a receiving coil is presented according to the working principle of transformer. The influence of the size of the receiving coil to the inductive voltage and the power transfer ability is analyzed theoretically and by simulation as well. In order to reduce the influence of the leakage inductance, the influence of coupling coefficient and secondary quality factor to the voltage gain, current gain and power transfer efficiency of different compensation topology is analyzed. All the compensation circuit is simulated by PSpice software. The compensation in both primary and secondary side makes the exponent number of the system higher, which causes bifurcation phenomenon. Bifurcation criteria of all the compensation topology are presented and the frequencies at which the power switches can work at the soft-switching condition are simulated, which provide theoretical foundation for the ICPT system design in order to avoid bifurcation and reduce the switching loss.更多还原