航空中频逆变器的新型容错拓扑及其控制方法

Fault Tolerant Topology and Control of Aeronautic Medium Frequency Inverter

针对新型逆变器中点电位难以控制的问题,提出了改进型拓扑结构,通过增加的辅助桥臂对中点电位进行独立控制,可有效简化主拓扑控制器的复杂性。为减少开关管损耗,稳定开关管频率,采用基于直接功率的预测控制方法,仿真和实验对新型拓扑和控制方法进行了验证。

In order to solve the control problem of neutral point voltage, an improved topology is proposed.The control of inverter is high simplified by an adding assistant leg to control neutral point voltage independently.Switch waste and switch frequency are reduced by using direct power predictive control, simulation and experiments verify the pro- posed topology and control method.