Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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基于LC濾波器的單相SPWM逆變器雙環(huán)控制設(shè)計(jì)

來源:電工電氣發(fā)布時(shí)間:2017-04-21 14:21 瀏覽次數(shù):4
基于LC濾波器的單相SPWM逆變器雙環(huán)控制設(shè)計(jì)
 
王博超
(東南大學(xué) 電氣工程學(xué)院,江蘇 南京 210096)
 
    摘 要:對(duì)基于LC 濾波器的單相SPWM 逆變器的雙環(huán)控制進(jìn)行了分析,得到了LC 濾波器在逆變器使用單極性倍頻的調(diào)制方式下的參數(shù)設(shè)定,以此為基礎(chǔ)對(duì)單相逆變器的雙環(huán)控制方式進(jìn)行了建模及電壓環(huán)、電流環(huán)的參數(shù)確定。利用MATLAB/Simulink 軟件對(duì)該逆變器模型進(jìn)行了線性負(fù)載的突加突減仿真與帶非線性負(fù)載時(shí)開、閉環(huán)的諧波畸變率的對(duì)比仿真。仿真結(jié)果表明,該種控制策略下逆變器具有較好的動(dòng)態(tài)響應(yīng)性能及較低的諧波畸變率。
    關(guān)鍵詞:SPWM 逆變器;LC 濾波器;雙環(huán)控制
    中圖分類號(hào):TM464     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2017)04-0021-05
 
Design of Double Loop Control in Single-Phase Sinusoidal Pulse Width
Modulation Inverter Based on LC Filter
 
WANG Bo-chao
(School of Electrical Engineering, Southeast University, Nanjing 210096, China)
 
    Abstract: This paper analyzed the double loop control of sigle-phase sinusoidal pulse width modulation (SPWM) inverter based on the LC filter and obtained the parameters setting of the LC filter under the conditions that the inverter used the unipolarity frequency-doubled modulation mode. On the basis of this, this paper established the sigle-phase inverter model with double loop control mode and determined the parameters of voltage loop and current loop. The Simulink in MATLAB was used to carry out simulation of sharp increase and reduction for the linear load of the inverter model, comparing with the loop-opened or loop-locked harmonic distortion rate for the nonlinear load. The simulation results show that this kind of control strategy can obtain favorable dynamic response and low total harmonic distortion (THD).
    Key words: sinusoidal pulse width modulation inverter; LC filter; double loop control
 
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