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航空高压直流电网低频纹波的有源抑制

, PP. 151-158

Keywords: 有源滤波器,飞机供电系统,拓扑,控制系统,直流电网

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Abstract:

270V航空高压直流电网是一种先进的飞机供电系统形式,但其母线中的低频纹波会对电网电压脉动产生影响,因此必须对该低频纹波进行滤除。提出采用航空直流有源滤波器(APF)来抑制电网中的低频纹波,该方法补偿性能不受电网参数和负载影响,具有较好的前景。简要描述了直流APF的几种拓扑,采用了一种可靠性高、损耗低的新型拓扑作为航空直流APF的主电路,分析了其工作原理并详细介绍了航空直流APF的控制策略;建立了控制系统模型,通过绘制伯德图对比了各参数下系统的性能,为控制优化提供了依据。仿真和实验结果验证了该航空直流APF方案的可行性。

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