三相航空中频电源控制策略研究

Research of Control Strategy for Three-phase Aviation Medium-frequency Power Supply

针对航空用矩阵式高频链中频逆变电源的拓扑结构,提出了一种解结耦的SPWM控制策略,并给出了详细的数学推导。根据高频变压器输出侧电压脉冲的极性,将矩阵变换器等效成两个常规的三相逆变器,从而将单向高频链逆变器的控制策略引入到矩阵式高频链逆变器中。与其传统的矩阵变换器的换流策略相比,基于解结耦的控制策略易于实现,容易分析其工作原理。经过数学推导证明了此策略的可行性,并运用matlab/simulink仿真软件进行仿真研究,输出电压波形谐波含量低,验证了控制策略的正确性。

Aiming at high frequency link inverter with medium-frequency matrix converter on aviation,the DeRe-Couple SPWM strategy is proposed and is given the detailed mathematical deduction.Matrix converter is equivalent to two conventional three-phase inverters in accordance with side voltage plus of high-frequency transformer output.And thus strategy for single-phase high-frequency link inverter is introduced high-frequency link matrix inverter.Compare with convert strategy of the traditional matrix converter,De-Re-Couple strategy is easy to realize and analyze its working principle.The feasibility of this strategy is proved by mathematical deduction,and the result based on matlab / simulink simulation show that the output voltage waveform harmonic content is low,verify the correctness of the control strategy.