本文選題：永磁風(fēng)電機組 + 聯(lián)合控制��； 參考：《中國電機工程學(xué)報》2017年10期

【摘要】：針對孤網(wǎng)中負(fù)荷與分布式電源波動引起的頻率驟變及小幅振蕩問題,展開永磁風(fēng)電機組孤網(wǎng)調(diào)頻研究�；诟倪M的轉(zhuǎn)矩下垂控制算法,提出一種變流器小信號動態(tài)模型,探討降載系數(shù)與下垂系數(shù)對機側(cè)變流器輸入功率的影響,以及直流母線電壓補償值對網(wǎng)側(cè)變流器輸出功率的影響。為抑制風(fēng)速及負(fù)荷擾動,設(shè)計基于H_∞理論的聯(lián)合控制器,給出控制器相關(guān)參數(shù),優(yōu)化變流器輸入、輸出功率,從而在機組穩(wěn)定運行前提下提高孤網(wǎng)抗擾動能力,有效減弱頻率驟變并抑制小幅振蕩。聯(lián)合控制與其他控制方法仿真分析表明,基于變流器聯(lián)合控制機組運行數(shù)據(jù)較穩(wěn)定,且孤網(wǎng)頻率波動最小。最后通過實驗進一步驗證所提控制策略的有效性。
[Abstract]:In order to solve the problem of frequency sudden change and small oscillation caused by load and distributed power fluctuation in the isolated grid, the frequency modulation of the isolated grid of permanent magnet wind turbine is studied. Based on the improved torque droop control algorithm, a small signal dynamic model of converter is proposed, and the influence of load drop coefficient and load drop coefficient on input power of the converter is discussed. And the effect of DC bus voltage compensation value on output power of grid side converter. In order to restrain wind speed and load disturbance, a joint controller based on H _ 鈭，

本文編號：2036037