The measurement principle of the average power for non sinusoidal period current circuit is introduced in this paper.
介绍了非正弦周期电流电路的平均功率测量原理。
The active power definition is well accepted, but the reactive power definition is still questionable in non-sinusoidal condition.
非正弦电路中，有功功率定义已被公认，无功功率的定义却一直还没有定论。
The motor drive system almost all use inverter supply power, which output non-sinusoidal voltage-current and produce non-sinusoidal electromagnetic field.
电机传动系统大都采用变频器供电，输出的是非正弦电压、电流，其在电机中产生非正弦磁场。
Reactive power measurement of non-sinusoidal circuit is the hot-spot research in Electric power System.
非正弦电路的无功测量是当前电力测量研究的热点。
This paper simply described several algorithms of reactive power, and investigated reactive power theory of the non-sinusoidal electric circuit and its algorithm of measurement.
简述了几种常用的无功功率测量算法，对非正弦电路无功功率理论及其无功功率测量算法进行了研究。
Further, the current quadrilateral and admittance quadrilateral, as well as their similarity to the power quadrilateral in non-sinusoidal alternating-current circuits were derived.
由功率四边形进一步确立了非正弦交流电路中的电流四边形和导纳四边形，以及它们和功率四边形的相似关系。
How to define instantaneous reactive current and reactive power in three-phase non-sinusoidal asymmetrical systems is still a concerned problem by academia.
如何定义三相系统的瞬时无功电流、瞬时无功功率一直是学术界关心的问题。
Then the definitions of average and instantaneous reactive power based on Hilbert transforrnation for non-sinusoidal circuit are presented.
非正弦电路无功功率及瞬时无功功率尚无统一的定义。
The interpretation of active and reactive currents in non-sinusoidal and unbalanced three-phase four-wire systems is given based on the generalized instantaneous reactive power theory.
以通用瞬时无功功率理论为基础，阐述了电压不对称和非正弦条件时的有功和无功电流的物理意义。
AC/DC switching converters are highly nonlinear. Therefore they draw a non-sinusoidal current with a very low power factor.
DC开关变换器非线性程度很高，输入电流为非正弦形式，功率因数极低。
AC/DC switching converters are highly nonlinear. Therefore they draw a non-sinusoidal current with a very low power factor.
DC开关变换器非线性程度很高，输入电流为非正弦形式，功率因数极低。
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