摘要
为了减少感应式无线充电系统增加的额外电路和控制成本,取消初级侧和次级侧之间的通信,该文提出仅需增加一个额外电容和一个开关器件在次级电路的方法,即可实现对电池恒流恒压切换充电。该方法无需初级和次级电路进行通信或增加DC-DC变换器,降低了整个系统的成本和复杂性。首先分析得到感应式无线充电系统的电流和电压增益,接着通过设计电路中元件参数值使得电流和电压增益与负载无关,最后合理配置电路参数,通过切换开关即可实现恒流和恒压切换输出。实验表明,所提出的方法在恒流和恒压模式下,系统的恒流充电电流和恒压充电电压略微受到电池等效负载改变的影响,但是结果仍然满足对电动自行车的充电要求。
In order to reduce the extra circuits and the cost of control strategy for the inductive power transfer （IPT） charging system and cancel the communication between primary side and secondary side, a novel constant current （CC） mode and constant voltage （CV） mode control strategy employing only an additional capacitor and an electron switch is proposed in the secondary side to charge battery. No communication and sophisticated control of DC-DC converter are needed, so that the cost and the complexity of the overall system can be minimized. Firstly the current gain and voltage gain of the IPT system are derived. Then the parameters of the passive components are selected to let the current and voltage gain functions independent with the load resistance. Finally, after carefully choosing parameters, the CC mode and CV mode can be achieved by turning on/off the electron switch. Experimental results show that the charging current in CC mode and charging voltage in CV mode of the system are slightly effected by the load resistance of battery, while it still meets the requirement of battery charging for electric bicycles.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第11期3263-3269,共7页
Proceedings of the CSEE
基金
国家杰出青年科学基金(51525702)
四川省青年科技基金(2016JQ0033)~~
关键词
感应电能传输
恒流
恒压
电池充电
T型等效电路模型
inductive power transfer （IPT）
constant current
constant voltage
battery charging
T-model equivalent circuit
