三相四橋臂有源電力濾波器控制研究
徐家輝,孫培德
(東華大學(xué) 信息學(xué)院,上海 201620)
摘 要:針對三相四線制系統(tǒng)中不對稱負(fù)載的情況,采用了四橋臂的有源電力濾波器,可以實現(xiàn)三相四線制系統(tǒng)的諧波補償,同時可以治理中線上的諧波電流。為了更好地實現(xiàn)電流跟蹤,提出了將BP 神經(jīng)網(wǎng)絡(luò) PID 應(yīng)用于電流環(huán)的電流跟蹤,通過 MATLAB/Simulink 仿真驗證,并與傳統(tǒng) PI 控制器進(jìn)行對比,結(jié)果表明,BP 神經(jīng)網(wǎng)絡(luò) PID 的控制效果明顯優(yōu)于傳統(tǒng) PI 控制器。
關(guān)鍵詞:BP 神經(jīng)網(wǎng)絡(luò) PID ;有源電力濾波器;三相四橋臂
中圖分類號:TN713+.8 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2021)05-0022-05
Research on the Control of Three-Phase Four-Leg Active Power Filter
XU Jia-hui, SUN Pei-de
(School of Information, Donghua University, Shanghai 201620)
Abstract: To solve the problem of asymmetric load in three-phase four-wire system, the four-leg active power filter is used to compensate for the harmonic of three-phase four-wire system and to control the harmonic current in the neutral line. For the purpose of tracking current accurately and fast, BP neural network PID is applied to track the current loop. Through the simulation and verification of MATLAB/Simulink and the comparison with traditional PI controller, the results show that the control effect of BP neural network PID is obviously better than that of traditional PI controller.
Key words: BP neural network PID; active power filter; three-phase four-leg
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