Although the absolute cost of four - wirecircuits is higher than that of two - wire circuits, they offer considerably improved performance.
尽管四线电路的绝对成本高于双线电路,但它显著地改进了性能。
2
In this paper, two types of main power circuits and their control methods are introduced when constructing active power filter in three phase fourwire system.
本文介绍了在实现三相四线制有源电力滤波器时所采用的两种不同的主电路结构及其控制方法。
3
Firstly, the existing methods of the three phase power measurement in the teaching materials are introduced. And then another three connection methods are suggested for three phase fourwirecircuits.