three unbalanced power

The p-q-r instantaneous power theory is introduced, based on which a direct control strategy of UPQC ( Unified Power Quality Conditioner) is presented and its implementation in non-linear and unbalanced three-phase four-wire system is discussed.

阐述了p-q-r瞬时功率理论的原理，提出了基于该理论的统一电能质量控制器（UPQC）的直接控制策略，探讨了将其用于三相四线非线性及不平衡系统中的实现方法。

The causes of three-phase unbalance of distribution network is roughly divided into two types. One kind is caused by the unbalanced power supplied link system, another kind is caused by the load of the asymmetric three-phase unbalance system.

配电网三相不平衡产生的原因大致分为两类，一类是由供电环节不平衡引起的系统三相不平衡，另一类是由负荷的不对称引起的系统三相不平衡。

The operation of unbalanced three-phase loads of distribution network will increase power loss.

配电网三相负荷不平衡运行将增加配电网的电能损耗。

Three-phase four-legged inverters are bringing forward to power unbalanced three-phase loads.

三相四桥臂逆变器是针对解决带三相不平衡负载而提出来的一种新型拓扑.

The reactive power and current of three-phase unbalanced load are compensated.

这样实现了不平衡负荷无功和电流的综合补偿.