无功负载电路能量仅在交换而并没有被负载消耗掉所以称为无功负载，有时候也称感性负载。
并联型有源电力滤波器适用于多种负载条件下的谐波和无功补偿，尤其是能应用于电源电流畸变和不平衡条件下。
The SAPF prototype can compensate harmonics and reactive well under varies load conditions, especially in the case of a distorted or unbalanced current of power supply.
针对并联型有源滤波器提出了一种电流控制新方式，与传统控制方式不同，该方式不需要检测非线性负载中的谐波及无功电流。
A new equivalence principle of current control for shunt active power filters is introduced, which having no use for measurement of harmonic and reactive currents of nonlinear loads.
TBC能补偿基波无功功率，平衡连接到系统的负载。
The TBC compensates the fundamental reactive power and balances the load connected to the system.
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