单管无线电能传输系统主电路参数的优化设计

Optimal design on main circuit parameters of WPT system with single tube

常见的单管逆变电路只能在开关管开通或关断期间实现能量传输。本文提出了一种单管感应耦合式电能传输系统,该系统不仅可以实现零电压开通和零电压关断,而且在两种开关状态下都能传递能量。为了使该设计方案能够高效、稳定地传输能量,给出一种基于电压传输特性的主电路参数设计方法。在对主电路进行动态分析的基础上,对其谐振网路进行了等效变换,得出系统的电压增益函数。在优化原副边谐振频率的过程中得出了开关管实现ZVS的条件和系统实现最大电压增益的参数配置。完成了系统全局最优设计。最后通过仿真和实验验证了设计的正确性。

Common single tube inverter can only achieve power transmission during the switch is either opening or closed. This paper proposed an inductively coupled power transmission system with single tube,and it can not only realize zero voltage turn-on and zero voltage turn-off but also can transfer power no matter the switch is on or off. In order to make the design scheme transfer power efficiently and steadily,it proposes a method to design the main circuit parameters based on voltage transmission characteristics. On the basis of the dynamic analysis of the main circuit,the equivalent transformation on the resonant network along with the voltage gain function of the system is given out. The condition for realizing ZVS and the parameters configuration for maximum voltage gain are obtained in the process of optimizing the resonance frequency of both sides. The global optimal design is done. Finally the correctness of the design is verified by simulation and experiment.