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Technical Discuss
什么是功率因数?如何如何测量?
Technical discuss
什么是功率因数?如何如何测量?
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btt
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btt
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25 Oct 2020 12:57
#148
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btt
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功率因数:在直流电路里,电压乘电流就是有功功率。但在交流电路里,电压乘电流是 视在功率,而能起到作功的一部分功率(即有功功率)将小于视在功率。有功功率与视在功 率之比叫做功率因数,以 COSΦ表示,其实最简单的测量方式就是测量电压与电流之间的 相位差,得出的结果就是功率因数。
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什么是功率因数?如何如何测量?