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基于虛擬電阻的LCL型并網(wǎng)逆變器前饋控制策略

來(lái)源：電工電氣發(fā)布時(shí)間：2023-08-28 14:28 瀏覽次數(shù)：311

基于虛擬電阻的LCL型并網(wǎng)逆變器前饋控制策略

焦龍¹，魯西坤¹，劉萬(wàn)兵²，呂建光²

(1 安陽(yáng)工學(xué)院電子信息與電氣工程學(xué)院，河南安陽(yáng) 455000；

2 河南安彩高科股份有限公司，河南安陽(yáng) 455000)

摘要：為改善無(wú)源阻尼產(chǎn)生的損耗及低輸出阻抗導(dǎo)致的電流畸變，設(shè)計(jì)了基于虛擬電阻的 LCL 型并網(wǎng)逆變器前饋控制策略。通過(guò)虛擬電阻增大等效阻尼，實(shí)現(xiàn)了尖峰削減；通過(guò)設(shè)計(jì)電網(wǎng)電壓全前饋函數(shù)構(gòu)成全前饋控制，提高了整體輸出阻抗，實(shí)現(xiàn)了諧波電流抑制。仿真實(shí)驗(yàn)結(jié)果表明，該控制策略具有良好的穩(wěn)態(tài)、動(dòng)態(tài)和抗干擾能力。

關(guān)鍵詞： LCL 型并網(wǎng)逆變器；虛擬電阻；準(zhǔn)比例諧振控制；電網(wǎng)電壓畸變；電網(wǎng)電壓全前饋

中圖分類(lèi)號(hào)：TM464 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2023)08-0018-05

The Feed-Forward Control Strategy of LCL-Type Grid-Connected

Inverters Based on Virtual Resistance

JIAO Long¹, LU Xi-kun¹, LIU Wan-bing², LYU Jian-guang²

（1 School of Electronic Information and Electrical Engineering, Anyang Institute of Technology, Anyang 455000, China;

2 Henan An Cai Hi-Tech Co., Ltd, Anyang 455000, China）

Abstract: In order to reduce the loss produced by passive damping and to improve the current distortion caused by low output impedance,a feed-forward control strategy of LCL grid-connected inverters based on virtual resistance is designed in the paper. This strategy can raise equivalent damping to realize peak reduction by virtual resistors. The design of full feed-forward function of grid voltage constitutes the full feedback control, which increases the overall output impedance and realizes harmonic current suppression. The simulation results show that this control strategy has good steady state, dynamic and anti-interference ability.

Key words: LCL-type grid-connected inverter; virtual resistance; quasi-proportional resonance control; grid voltage distortion; full feed-forward of grid voltage

參考文獻(xiàn)

[1] 許津銘，謝少軍，張斌鋒. 分布式發(fā)電系統(tǒng)中 LCL 濾波并網(wǎng)逆變器電流控制研究綜述[J] . 中國(guó)電機(jī)工程學(xué)報(bào)，2015，35(16)：4153-4166.

[2] 許晨航，王繼承，包立誠(chéng)，等. 一種新型分裂電容型 LCL 濾波器設(shè)計(jì)方法[J]. 電力電子技術(shù)，2021，55(7)：39-45.

[3] LU Minghui, WANG Xiongfei, BLAABJERG F,et al.Grid-voltage-feed forward active damping for grid-connected inverter with LCL filter [C] //2016 IEEE Applied Power Electronics Conference and Exposition(APEC)，2016：1941-1946.

[4] WANG Jing, SONG Yulun, MONTI A.A study of feed-forward control on stability of grid-parallel inverter with various grid impedance[C]//2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems(PEDG)，2014：1-8.

[5] XU Jinming, XIE Shaojun, TANG Ting.Active damping-based control for grid-connected LCLfiltered inverter with injected grid current feedback only[J].IEEE Transactions on Industrial Electronics，2014，61(9)：4746-4758.

[6] 魏石磊，田艷軍，王毅，等. 弱電網(wǎng)中增強(qiáng) LCL 逆變器穩(wěn)定性的虛擬阻抗控制[J] . 高電壓技術(shù)，2019，45(6)：1827-1834.

[7] PEN~A-ALZOLA R, LISERRE M, BLAABJERG F, et al.Analysis of the passive damping losses in LCL-filter-based grid converters[J].IEEE Transactions on Power Electronics，2013，28(6)：2642-2646.

[8] 徐健，曹鑫，郝振洋，等. 基于電網(wǎng)諧波電壓前饋的虛擬同步整流器電流諧波抑制方法[J] . 電工技術(shù)學(xué)報(bào)，2022，37(8)：2018-2029.

[9] XIE Shaojun , XU Jinming , TANG Ting .Improved control strategy with grid-voltage feedforward for LCL-filter-based inverter connected to weak grid[J].IET Power Electronics，2014，7(10)：2660-2671.

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基于虛擬電阻的LCL型并網(wǎng)逆變器前饋控制策略