• 1. four-wire three-phase system: 四线三相制
• 2. three phase four wire system: 三相四线制
• 3. four-wire three-phase alternating current system: 三相四线式交流系统

更多释义

• 1.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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• 2.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。
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• 3.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。
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