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发电用微型燃气轮机三相四桥臂逆变器解耦控制

, PP. 69-73

Keywords: 三相四桥臂逆变器,幅相控制,内阻变换,解耦控制

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Abstract:

针对发电用微型燃气轮机系统中的三相四桥臂逆变器,提出了基于内阻变换的解耦控制策略。主要将逆变器和其输出滤波器作为一体化逆变电源,进行一体化建模和一体化控制。经过等效变换,将零线桥阻抗值变换为零,将其他各相的阻抗等效地降为较低的阻抗值,将其解耦成三个相互独立的单相逆变器。控制方法上,采用幅相多环控制,特别是对不平衡和非线性负载具有良好的控制能力。仿真和实验结果验证了该控制方法的正确性和有效性。

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