本文選題：直流微電網(wǎng) + 分布式控制　； 參考：《控制理論與應(yīng)用》2017年08期

【摘要】：直流微電網(wǎng)中,大部分控制器在設(shè)計(jì)時(shí)未考慮通信延時(shí)對(duì)系統(tǒng)性能的影響,這可能會(huì)導(dǎo)致控制器在實(shí)際應(yīng)用中失效甚至影響系統(tǒng)的穩(wěn)定性.本文基于一種分布式控制策略,建立了直流微電網(wǎng)系統(tǒng)的時(shí)滯模型,重點(diǎn)研究了通信延時(shí)對(duì)系統(tǒng)穩(wěn)定性的影響.結(jié)合Razumikhin穩(wěn)定性理論,提出了一種針對(duì)時(shí)變時(shí)滯系統(tǒng)的全時(shí)滯穩(wěn)定性判據(jù).為了更加適用于實(shí)際系統(tǒng),在另一種全時(shí)滯穩(wěn)定性判據(jù)的基礎(chǔ)上,對(duì)系統(tǒng)時(shí)滯相關(guān)穩(wěn)定性進(jìn)行分析,得到保證系統(tǒng)穩(wěn)定的延時(shí)上界,進(jìn)而給出了一種確定控制參數(shù)范圍的方法.與傳統(tǒng)的將通信延時(shí)處理為一階慣性環(huán)節(jié)的分析方法相比,基于時(shí)滯系統(tǒng)的分析方法更切合實(shí)際,為系統(tǒng)的穩(wěn)定運(yùn)行提供了一個(gè)更寬的時(shí)滯范圍,提高了系統(tǒng)的可靠性.仿真和實(shí)驗(yàn)結(jié)果表明本文提出的控制參數(shù)設(shè)計(jì)方法能保證系統(tǒng)在最大延時(shí)下的穩(wěn)定運(yùn)行.
[Abstract]:In DC microgrid, most controllers are designed without considering the effect of communication delay on system performance, which may lead to the failure of controller in practical application and even affect the stability of the system. Based on a distributed control strategy, the delay model of DC microgrid system is established in this paper, and the influence of communication delay on the stability of the system is studied. Based on Razumikhin stability theory, a full delay stability criterion for time-varying time-delay systems is proposed. In order to be more suitable for practical systems, the delay-dependent stability of the system is analyzed on the basis of another stability criterion with full delay, and the upper bound of delay is obtained to ensure the stability of the system, and a method to determine the range of control parameters is given. Compared with the traditional analysis method which treats the communication delay as the first order inertial link, the analysis method based on the time-delay system is more practical, which provides a wider time-delay range for the stable operation of the system and improves the reliability of the system. Simulation and experimental results show that the proposed control parameter design method can ensure the stable operation of the system under the maximum delay.
【作者單位】： 中南大學(xué)信息科學(xué)與工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51677194) 國(guó)家高技術(shù)研究發(fā)展計(jì)劃項(xiàng)目(“863”計(jì)劃)(2015AA050604) 湖南省重點(diǎn)科技計(jì)劃項(xiàng)目(2016GK2039)資助~~
【分類(lèi)號(hào)】：TM727
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本文編號(hào)：1901388