虚拟谐波电阻型单相Boost PFC变换器研究  

Research on Virtual Harmonic Resistance Single Phase Boost PFC Converter

作　　者：马海杰 曾江[1] Ma Haijie;Zeng Jiang(School of Electric Power Engineering,South China University of Technology,Guangzhou Guangdong 510641,China)

机构地区：[1]华南理工大学电力学院,广东广州510641

出　　处：《电气自动化》2025年第1期44-47,共4页Electrical Automation

基　　金：广东省自然科学基金项目(2021A1515012616)。

摘　　要：功率因数校正(power factor correction,PFC)变换器能提高负载功率因数,降低对电网谐波污染。为此,提出一种虚拟谐波电阻型单相Boost PFC变换器。首先,分析了虚拟谐波电阻对负载并网点处的谐波电压抑制作用,使用快速傅里叶变换提取电网低次谐波电压;然后采用线性自抗扰控制器,在谐波频率下将PFC变换器和负载等效为一个虚拟电阻,吸纳电网自身存在的谐波功率,降低负载并网点的谐波电压,实现电网谐波治理功能。最后在PSCAD和半实物仿真平台上建立试验模型,验证了方法的有效性。Power factor correction(PFC)converters can improve load power factor and reduce harmonic pollution to the power grid.A virtual harmonic resistance single-phase Boost PFC converter was proposed for the purpose.Firstly,analyze the suppression effect of virtual harmonic resistance on harmonic voltage at the load grid connection point,then use fast Fourier transform to extract the low order harmonic voltage of the power grid,and then apply linear active disturbance rejection controller to equivalent the PFC converter and load to a virtual resistance at harmonic frequency,in order to absorb the harmonic power of the power grid itself,reduce the harmonic voltage at the load grid connection point,and achieve the function of power grid harmonic governance.Finally,an experimental model was established on PSCAD and semi physical simulation platform to verify the effectiveness of the method.

关 键 词：BOOST变换器 功率因数校正 虚拟谐波电阻 谐波治理 自抗扰控制 

分 类 号：TM461[电气工程—电器]