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将瞬时有功功率定义为电压与有功电流的点积 ,瞬时无功功率定义为电压与无功电流的叉积。由此我们推导出三相电路在各种情况下的瞬时有功功率和无功功率的表达式 ,这与刘进军、王兆安基于赤木泰文瞬时无功理论推导出的表达式一致
The instantaneous active power is defined as the dot product of voltage and active current. The instantaneous reactive power is defined as the cross product of voltage and reactive current. From this we derive the expression of instantaneous active power and reactive power of the three-phase circuit under various conditions, which is consistent with the expression derived by Liu Jinjun and Wang Zhao’an based on Akagi-Thai instantaneous reactive power theory