The invention discloses a joint control method suitable for a multi-module wireless charging system. The multi-module wireless charging system comprises a plurality of wireless charging modules, eachmodule comprises a transmitting coil, a receiving coil and a set of independent transmitting end circuit and receiving end circuit, and the output sides are connected in parallel to output a load. Thephase difference of the rising edge of the output voltage of each module inverter is maintained at 0 degree or 180 degrees by setting the driving signal phase of a reference lead bridge arm; joint phase shift control is performed on the input side of each module through the total output current (or voltage), and the phase shift angles of the modules are the same. For a multi-module wireless charging system with asymmetric coupling parameters, effective value current sharing control is performed on transmitting end current so as to realize transmitting end current sharing of an asymmetric multi-module wireless charging system. According to the method, through combined control and transmitting end effective value current-sharing control, output control and transmitting end current balance under the condition that the multi-module wireless charging system directly faces and deviates are realized.
本发明公开了一种适用于多模块无线充电系统的联合控制方法,所述的多模块无线充电系统中含有若干无线充电模块,每个模块包含一个发射线圈、一个接收线圈以及一套独立的发射端电路和接收端电路,输出侧并联对负载进行输出,通过设置参考超前桥臂的驱动信号相位,使各模块逆变器输出电压上升沿的相位差维持在0°或180°;通过总输出电流(或电压)对各个模块输入侧进行联合移相控制,各模块移相角相同。对于耦合参数不对称的多模块无线充电系统,对发射端电流进行有效值均流控制,以实现非对称多模块无线充电系统发射端均流。本方法通过联合控制和发射端有效值均流控制,实现了对多模块无线充电系统正对和偏移情况下的输出控制以及发射端电流平衡。
Joint control method suitable for multi-module wireless charging system
一种适用于多模块无线充电系统的联合控制方法
2020-11-03
Patent
Elektronische Ressource
Chinesisch
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