摘要
无功电流检测广泛采用模拟乘法器来实现,但由于模拟乘法器价格较贵,使得它在某些领域的应用受到了限制。本文研究了一种新的基于模拟开关的三相无功电流检测方法。文中介绍了这种三相无功电流检测方法工作原理并给出了一种实用的电路,针对几种典型的功率因数角进行了仿真研究,仿真研究验证了这种方法的可行性。
Analogue multiplier has been widely used in the detection circuit of the reactive power. But an analogue multiplier is quite expensive so it is limited in some application case. In this paper, a novel detection method for three phase reactive current with analog multiplexer is ~tudied. The operation principle of the three-phase reactive current detection is also presented and an available circuit is illustrated. The simulation study has been down for some typical power factor angle, the simulation result shows that it is feasible.
出处
《日用电器》
2010年第8期41-44,共4页
ELECTRICAL APPLIANCES
关键词
无功电流检测
相敏检波
模拟开关
detection reactive current
phase sensitive detector
analog multiplexer
