为提高逆变电源的功率因数，必须采用谐波抑制技术降低输入电流的谐波畸变率。
To increase power factor, the current distortion can be reduced by harmonic suppression technology.
提出了一种能有效地抑制由非同步采样引起的有功功率及功率因数的测量误差的加权算法。
A weighted algorithm is proposed for reducing effectively the error caused by non-synchronous sampling in active power and power factor measurement.
为了抑制谐波污染，改善电网品质，目前多在电源前级加入功率因数校正环节。
In order to restrain harmonic pollution and improve power system quality, power factor correction (PFC) circuit is applied in pre-stage of power supply.
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