本文選題：風(fēng)電系統(tǒng) + 網(wǎng)側(cè)變換器�。� 參考：《計算機(jī)仿真》2014年11期

【摘要】：永磁同步風(fēng)電系統(tǒng)使用兩電平電壓型雙PWM變換器向電網(wǎng)輸送電能。由于變換器直流側(cè)負(fù)載擾動引起直流母線電壓波動,影響輸入電網(wǎng)電能質(zhì)量。為了減小負(fù)載擾動對直流母線電壓的影響,提出一個基于相似反對稱結(jié)構(gòu)理論的網(wǎng)側(cè)變換器控制方法。以相似反對稱結(jié)構(gòu)為閉環(huán)期望結(jié)構(gòu),采用逆推法設(shè)計網(wǎng)側(cè)控制器。對系統(tǒng)在負(fù)載擾動作用下的穩(wěn)定性進(jìn)行分析。用Matlab進(jìn)行仿真,結(jié)果表明該控制器能控制輸入電網(wǎng)電能功率因數(shù),提高直流母線電壓的穩(wěn)定性,縮短調(diào)節(jié)時間,提高系統(tǒng)的魯棒性,為優(yōu)化輸電網(wǎng)的電能質(zhì)量提供了依據(jù)。
[Abstract]:Permanent magnet synchronous wind power system uses two-level voltage-mode dual-PWM converter to transmit electricity to the power grid. The DC bus voltage fluctuation caused by DC side load disturbance affects the input power quality. In order to reduce the effect of load disturbance on DC bus voltage, a grid-side converter control method based on the theory of similar antisymmetric structure is proposed. The similar antisymmetric structure is used as the closed-loop desired structure, and the backstepping method is used to design the grid-side controller. The stability of the system under load disturbance is analyzed. The simulation results with Matlab show that the controller can control the input power factor, improve the stability of DC bus voltage, shorten the adjusting time, improve the robustness of the system, and provide the basis for optimizing the power quality of transmission network.
【作者單位】： 四川大學(xué)電氣信息學(xué)院;
【分類號】：TM614

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