本文選題：單相逆變器　切入點(diǎn)：抗擾控制器　出處：《電機(jī)與控制學(xué)報(bào)》2014年07期 　論文類(lèi)型：期刊論文

【摘要】：針對(duì)以單相逆變器為功率接口的太陽(yáng)能發(fā)電系統(tǒng)中電能的快速隨機(jī)波動(dòng)和非線性負(fù)載接入時(shí)產(chǎn)生的諧波問(wèn)題,提出一種基于阻抗觀測(cè)器的抗擾控制策略。該策略主要把造成逆變器輸出電壓的波動(dòng)和產(chǎn)生的諧波等隨機(jī)量作為一種干擾,將諧波的影響、溫度變化的影響、線路和濾波器的阻抗參數(shù)變化等引起的電壓變化量等效為阻抗上的電壓降。通過(guò)構(gòu)造的阻抗觀測(cè)器來(lái)估算出產(chǎn)生壓降的等效電阻、等效電感和等效電容,然后應(yīng)用抗擾控制器來(lái)消除干擾,自動(dòng)補(bǔ)償輸出電壓變化,使逆變器輸出標(biāo)準(zhǔn)正弦波,提高電能質(zhì)量。仿真和實(shí)驗(yàn)結(jié)果表明,不論是逆變器直流側(cè)電壓波動(dòng),還是非線性負(fù)載的接入,逆變器都能夠輸出標(biāo)準(zhǔn)電壓正弦波。
[Abstract]:Aiming at the problem of fast random fluctuation of electric energy and harmonic generated when nonlinear load is connected in solar power generation system with single-phase inverter as power interface, A disturbance rejection control strategy based on the impedance observer is proposed, in which random variables such as the fluctuation of the output voltage and the harmonic produced by the inverter are taken as a kind of interference, the influence of the harmonic and the influence of the temperature change are taken as a kind of interference. The voltage variation caused by the impedance parameter change of the circuit and filter is equivalent to the voltage drop on the impedance. The equivalent resistance, equivalent inductance and equivalent capacitance that produce the voltage drop are estimated by the constructed impedance observer. Then the disturbance rejection controller is used to eliminate the interference and compensate the output voltage change automatically. The output standard sine wave of the inverter is improved and the power quality is improved. The simulation and experimental results show that the DC side voltage fluctuation of the inverter is not only the same as that of the inverter. Or nonlinear load access, inverter can output standard voltage sine wave.
【作者單位】： 東北大學(xué)信息科學(xué)與工程學(xué)院;
【基金】：遼寧省自然科學(xué)基金(20102068) 沈陽(yáng)科技計(jì)劃-應(yīng)用基礎(chǔ)研究專項(xiàng)(F13-316-1-53)
【分類(lèi)號(hào)】：TM464

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳宏志;劉秀，

本文編號(hào)：1614721