有功电流的严密定义与最佳无功补偿电流

On the Exact Definition of Active Current and Optimal Compensa-tion-Current

本文分析了信号能量与功率的关系,从能量与功率的角度对有功电流i_p作了严密的定义,并用严格的数学方法导出了i_p的表达式;在此基础上,求出了可充分利用源的能量并可消除负载波动对源的不利影响的最佳无功补偿电流。文中给出了无功电流的严密定义,解释了无功功率的物理意义,还引入了一个描述v,i系统能量一功率特性的新物理量。

With the comprehension of the energy property and power phenomena of signals, the exact definition of active current and the expression derived by rigorous mathematical approach are given. From the definition the optimal reactive compensation-current is determined. Furthermore the exact definition of reactive current and the physical nature of reactive power are interpreted.