【摘要】：提出了一種基于比例—積分—諧振(PIR)控制器,且適用于電流源型永磁直驅(qū)風力發(fā)電系統(tǒng)(CSC-DPMSG-WGS)的低電壓穿越運行控制方案。根據(jù)所提出的方法,電網(wǎng)故障時,通過機側(cè)變換器控制來限制風力發(fā)電機的電磁功率,以實現(xiàn)機側(cè)和網(wǎng)側(cè)的功率平衡;網(wǎng)側(cè)控制器在正序旋轉(zhuǎn)坐標系下采用PIR控制器同時對正負序電流進行無差控制,以消除兩倍基頻的功率波動,進而穩(wěn)定直流電流。仿真與實驗結(jié)果表明,所提出的控制方案在電網(wǎng)對稱及不對稱故障下均可有效降低直流電流波動,并實現(xiàn)電流源型永磁直驅(qū)風力發(fā)電系統(tǒng)的低電壓穿越。
[Abstract]:A low voltage traversing operation control scheme for current source permanent magnet direct drive wind power generation (CSC-DPMSG-WGS) system based on proportional integral-resonant (PIR) controller is presented. According to the proposed method, the electromagnetic power of the wind turbine is limited by the control of the machine side converter in case of power network failure, so that the power balance between the machine side and the grid side can be realized. In order to eliminate the power fluctuation of double fundamental frequency and stabilize the DC current, the PIR controller is used to control the positive and negative sequence currents simultaneously in the positive sequence rotation coordinate system. The simulation and experimental results show that the proposed control scheme can effectively reduce the DC current fluctuation and realize the low voltage traversing of the current source permanent magnet direct drive wind power generation system.
【作者單位】： 合肥工業(yè)大學教育部光伏系統(tǒng)工程研究中心;
【基金】：國家自然科學基金資助項目(51077033) 國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)資助項目(2009CB219708) 廣東省引進創(chuàng)新團隊項目(2011N015)~~
【分類號】：TM614
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本文編號：2233858