基于Park變換的單相逆變器靜態(tài)前饋補(bǔ)償控制策略
趙月,崔遠(yuǎn)慧,王延平
(大連工業(yè)大學(xué) 信息科學(xué)與工程學(xué)院,遼寧 大連 116000)
摘 要:針對單相光伏逆變器在雙閉環(huán)控制系統(tǒng)中電流環(huán)采用典型Ⅰ型系統(tǒng)時存在抗干擾性能差的缺點(diǎn),提出了一種新的電流內(nèi)環(huán)靜態(tài)前饋補(bǔ)償控制策略。通過改進(jìn)的Park變換,獲得單相逆變器的等效模型,在等效逆變器模型中利用前饋解耦控制的方法得到電流的控制方程,在典型Ⅰ型電流內(nèi)環(huán)控制系統(tǒng)中加入具有靜態(tài)前饋補(bǔ)償控制環(huán)節(jié)的方法抑制電流內(nèi)環(huán)的干擾信號。通過SIMULINK仿真可以得出,具有靜態(tài)前饋控制的電流內(nèi)環(huán)控制器對比采用典型Ⅰ型系統(tǒng)控制器的靜態(tài)性能和動態(tài)性能均良好,有效提高了電流環(huán)的抗干擾性能。
關(guān)鍵詞:太陽能光伏逆變器;Park 變換;靜態(tài)前饋補(bǔ)償;逆變器前饋解耦控制
中圖分類號:TM464 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2018)09-0012-04
Park Transform-Based Static Feed-Forward Compensation Control Strategy for Single-Phase Inverter
ZHAO Yue, CUI Yuan-hui, WANG Yan-ping
(School of Information Science and Engineering, Dalian Polytechnic University, Dalian 11 6000, China)
Abstract: Aiming at the existing disadvantages of inferior anti-interference ability when the current loop of single-phase photovoltaic inverter adopts the typical I-type system in double closed-loop control system, this paper proposed a kind of new static feed-forward compensation control strategy for current loop. Through the improved Park transformation, the equivalent model of the single-phase inverter was obtained. In the equivalent inverter model the feed-forward decoupling control method was used to get the control equation of the currents. For the interference signal in the current control equation, the static feed-forward compensation control method was used to eliminate the interference signal present in the inner loop of the current. The SIMULINK simulation shows that for the current loop with the static feedforward control, the static property of typical I-type system controller was the same as that of dynamic property, which effectively improves the anti-interference ability of the current loop.
Key words: solar photovoltaic inverter; Park transform; static feed-forward compensation; inverter feed-forward decoupling control
參考文獻(xiàn)
[1] 莊子喬. 太陽能光伏發(fā)電并網(wǎng)技術(shù)的應(yīng)用[J]. 企業(yè)技術(shù)開發(fā),2015,34(27):49-50.
[2] 王恒利,付立軍,揭貴生,等. 采用比例諧振和狀態(tài)反饋的三相逆變器最優(yōu)控制[J]. 西安交通大學(xué)學(xué)報(bào),2013,47(8):127-132.
[3] 李浩然,楊旭紅,薛陽,等. 基于模糊PI參數(shù)自整定和重復(fù)控制的三相逆變器并網(wǎng)研究[J]. 電機(jī)與控制應(yīng)用,2015,42(2):31-36.
[4] 沈定坤,王衛(wèi)星,徐軍,等. 基于坐標(biāo)變換的單相光伏并網(wǎng)逆變器研制[J]. 電力電子技術(shù),2013,47(1):55-57.
[5] YE Y, KAZERANI M, QUINTANA V H.A Novel Modeling and Control Method for Three- Phase PWM Converters[C]//IEEE Annual Power Electronics Specialists Conference,2001.
[6] 楊旭紅,王毅舟,王創(chuàng)典,等. 基于重復(fù)控制和模糊PI 控制的Z 源逆變器并網(wǎng)研究[J]. 電機(jī)與控制應(yīng)用,2016,43(5):22-27.
[7] 吳浩偉,段善旭,徐正喜. 一種新穎的電壓控制型逆變器并網(wǎng)控制方案[J]. 中國電機(jī)工程學(xué)報(bào),2008,28(33):19-24.
[8] 游洵,劉芙蓉. 帶升壓變壓器的光伏并網(wǎng)逆變器控制與實(shí)現(xiàn)[J]. 可再生能源,2017,35(2):259-263.
[9] 杜強(qiáng),高鋒陽,喬垚,等. 功率前饋的準(zhǔn)Z 源光伏并網(wǎng)逆變器Quasi-PR控制[J]. 高電壓技術(shù),2017,43(10):3322-3329.