Abstruct:In order to analyzes and optimize output power of magnetically⁃coupled resonant mode wireless power transfer sys⁃tem,the power output property of this system is analyzed and a simplified model of this system is given in this paper,which is of benefit to the designer to analyze or determine the parameters of the magnetically⁃coupled resonant wireless power transfer sys⁃tem. Moreover,to solve the problem that the output power of magnetically⁃coupled resonant wireless power transfer system varies drastically with the change of relative distance and position of two resonant coils,based on the output property discussed above, a practical maximum power point tracking(MPPT)method is proposed in this paper to stabilize and maximize the power of the system in relatively wide range.%为分析与优化磁耦合谐振式无线电能传输系统的输出功率，对磁耦合谐振式无线电能传输系统的功率输出特性进行分析与试验，并提出一种简化的系统模型，以方便设计者分析或确定磁共振式无线电能传输系统的参数。另外为解决原始系统输出功率随线圈相对位置而急剧变化，在此根据磁耦合谐振式无线电能传输系统的功率输出特性提出了一种可行的最大功率点追踪（MPPT）方法以稳定系统的输出功率，使得负载能够在宽距离范围内实现功率最大化。
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