介绍了一种基于DSP的三相四线制系统混合型电力滤波装置。
A new DSP based hybrid power filter designed under the condition of three-phase four-wire system is presented.
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。
Moreover, three-phase four-wire active filters can suppress zero line current, and solve symmetric problem of system effectively.
在三相四线制供电系统中，中性线是非常重要的。
In the Three phase and Four wire circuit system, the neutral wire is very important.
介绍了在三相四线制供电系统中，中线的作用，断线的危害，以及一种简单可靠的断线保护电路。
The paper introduced the effect of neutral wire the harm of open circuit and a kind of simple credible open circuit protection method.
该方法系统结构简单，不仅适用于单相电路，而且也适用于三相四线电路。
The system structure of this algorithm is simple . It not only fits for single-phase circuit, but also for three-phase circuit.
主要介绍用于三相四线制的有源电力滤波装置的研究工作，给出了系统的基本补偿原理、主电路及控制电路结构，并利用该装置进行了补偿实验。
This paper introduces an active power filter device used for three phase four wire. The compensation principle and structure of main circuit and control circuit are given.
通过试验验证，该检测方法能够很好的实现对三相四线制系统中的无功和谐波电流的检测。
The experimental results indicate that this method can be used to detect the reactive power and harmonic current exactly in three-phase four-wire system.
实验结果表明，该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。
Experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.
实验结果表明，该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。
Experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.
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