摘要
通过分析变压器负载侧和控制侧的谐波电流对电源电流的影响,提出一种新的谐波抑制方案——基于变压器磁路控制的谐波抑制技术。在传统电力变压器上附加控制绕组,通过控制绕组注入相应的谐波电流,抑制负载绕组引起的谐波,从而使变压器原边电流不合相应的谐波。该方案使变压器在电网中不仅起电能传输和变压的作用,并且可用于电能质量控制。理论分析和仿真研究验证了该方法的有效性。
Through the analysis of the influence of the harmonic of load current and control current,a novel harmonic suppression scheme is proposed:harmonic suppression based on magnetic circuit control of transformer.Control winding is added to the traditional transformer.Harmonic current is input through the control winding to suppress the harmonic brought by the load winding. Then there is no relevant harmonic in the source current.The scheme not only make the transformer play the role of power transmission and transformation,but also play the role of power quality control. The validity of the method is proved by theoretical analysis and simulations.
出处
《电气技术》
2008年第10期46-48,共3页
Electrical Engineering
关键词
变压器磁路控制
谐波抑制
瞬时无功功率理论
仿真
magnetic circuit control of transformer
harmonic suppression
instantaneous reactive power theory
simulation
