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电网技术  2010 

新型多功能10kV电压扰动发生器的设计

, PP. 75-80

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Abstract:

提出了适用于10kV配电电压等级的新型多功能电压扰动发生器的拓扑结构及相关控制算法。采用H桥级联的拓扑结构,将该装置直接串联在线路中,形成了电压扰动发生源。在H桥直流侧采用脉宽调制(pulsewidthmodulation,PWM)整流技术,通过多绕组变压器实现了取能及能量回馈。结合该装置主电路拓扑,提出了d-q同步坐标下逆变器参考电压前馈和输出电压反馈相结合的控制方法,采用电压单闭环PWM整流实现了直流电压稳定。利用PSCAD/EMTDC软件对装置进行了仿真建模,仿真结果验证了该装置主电路拓扑的可行性及控制策略的有效性。

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