three phase three wire system 三相三线制
two phase three wire system 双相三线制 ; 二相三线制 ; 两相三线制
two-phase three-wire system [电] 两相三线制
ac three-phase three-wire system 交流三相三线制
three-phase three wire system 三相三线系统
three-phase three-wire system 三相三线制系统
single-phase three wire system 单相三线制
In the Three phase and Four wire circuit system, the neutral wire is very important.
在三相四线制供电系统中，中性线是非常重要的。
In this paper, two types of main power circuits and their control methods are introduced when constructing active power filter in three phase four wire 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。
Moreover, three-phase four-wire active filters can suppress zero line current, and solve symmetric problem of system effectively.
另外，三相四线制有源电力滤波器能有效地抑制零线电流，并能有效地解决系统的不对称问题。
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