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电网技术  2010 

直驱型永磁风力发电系统的电网同步化方法研究

, PP. 182-187

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Abstract:

在直驱型永磁风力发电系统中,快速准确的相位同步检测是矢量控制和功率因数调节的基础;但该系统中网侧变流器的电网电压同步信号易受电网电压不对称和畸变的干扰。将一种新型锁相环应用于直驱型永磁风力发电系统的相位同步检测中,该锁相环以软件方式实现,通过全通滤波器和简单数学运算分离出不对称电网在dq同步旋转坐标下的正序分量,同时为减少高次谐波的影响加入了低通滤波器。仿真和实验结果均验证了该方法应用于直驱型永磁风力发电系统的有效性。

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