Author: admin
谐波是指其频率为基波频率整数倍的电压或电流。例如基波频率为50Hz,则3次谐波为150Hz,5次谐波为250 Hz。谐波是由非线性负载所造成的。例如PC机、打印机、荧光灯、调速马达驱动、充电器以及电镀设备等。这些设备将从电路中获取跃变的脉冲波形电流而不是平滑的正弦波。结果是含有谐波的畸变电流回流到电力系统的其他地方。办公室的非线性负载通常是单相的,而工厂里通常是三相的。谐波通常用谐波分析仪或电能质量分析仪进行测量。谐波分析仪 谐波测试仪 电能质量分析仪
This entry was posted on 星期六, 四月 18th, 2009 at 下午 4:44 and is filed under 电能质量分析仪. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.
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