發(fā)布時(shí)間：2018-03-19 14:12

  本文選題：諧波電網(wǎng)電壓　切入點(diǎn)：雙饋異步發(fā)電機(jī)　出處：《電工技術(shù)學(xué)報(bào)》2014年07期 　論文類型：期刊論文

【摘要】：通過建立5次、7次諧波電網(wǎng)電壓下雙饋異步風(fēng)力發(fā)電機(jī)(DFIG)的數(shù)學(xué)模型,分析了DFIG風(fēng)電機(jī)組運(yùn)行于諧波電網(wǎng)下所產(chǎn)生的性能惡化。為改進(jìn)DFIG在諧波電網(wǎng)下的運(yùn)行性能,以DFIG定子電流正弦或定子輸出有功/無功功率平穩(wěn)為諧波控制目標(biāo),在轉(zhuǎn)子電流PI閉環(huán)調(diào)節(jié)的基礎(chǔ)上,加入定子電流矢量諧振控制或定子功率矢量諧振控制,以達(dá)到上述DFIG在諧波電網(wǎng)下的控制目標(biāo)。為了有效實(shí)現(xiàn)控制目標(biāo),深入分析和對比了普通諧振控制器和矢量諧振控制器在DFIG運(yùn)行于諧波電網(wǎng)下的300Hz交流信號(hào)調(diào)節(jié)性能。矢量諧振控制器由于其更為精確的300Hz交流信號(hào)調(diào)節(jié)能力以及充裕的相位裕度以確保閉環(huán)工作穩(wěn)定性,因而更有助于DFIG在諧波電網(wǎng)下控制目標(biāo)的實(shí)現(xiàn)。通過構(gòu)建的風(fēng)電機(jī)組,實(shí)驗(yàn)結(jié)果驗(yàn)證了本文所提出的諧波電網(wǎng)電壓下的集成控制策略的正確性及有效性。
[Abstract]:By establishing the mathematical model of doubly-fed asynchronous wind turbine (DFIGG) under the 5th and 7th harmonic grid voltage, the performance deterioration of DFIG wind turbine running in harmonic network is analyzed. In order to improve the operation performance of DFIG in harmonic power network, Taking the DFIG stator current sinusoidal or stator output active / reactive power stationary as the harmonic control objective, the stator current vector resonance control or stator power vector resonance control is added on the basis of the rotor current Pi closed-loop regulation. In order to achieve the control goal of DFIG in harmonic power network, in order to realize the control goal effectively, This paper analyzes and compares the performance of 300Hz AC signal regulation between ordinary resonant controller and vector resonant controller running in harmonic power network with DFIG. The vector resonance controller is more accurate because of its ability to regulate 300Hz AC signal. Sufficient phase margin to ensure the stability of the closed-loop operation, The experimental results show that the integrated control strategy proposed in this paper is correct and effective under harmonic network voltage.
【作者單位】： 浙江大學(xué)電氣工程學(xué)院;
【基金】：國家自然科學(xué)基金重點(diǎn)資助項(xiàng)目(51277159) 國家863高技術(shù)基金資助項(xiàng)目(2011AA050204)
【分類號(hào)】：TM711

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本文編號(hào)：1634612