独立运行无刷双馈发电机基于空间矢量调制的直接电压控制技术

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摘要这篇文章介绍了一种新颖的无刷双馈发电机变速恒频独立发电控制策略,基于其数学模型的分析,提出并详细讨论了基于空间矢量调制的直接电压控制策略.利用发电机系统的模型推导估计变换器输出电压的方法,跳过电流控制环节,保持直接控制的固有快速动态响应和鲁棒性,并引入空间矢量调制实现开关频率恒定,减小谐波和脉动,提出了一种基于锁相环的转子初始位置检测方法提高磁场定向精度.文章对独立运行和并网型直接控制及矢量控制给予了比较和评估.实验结果验证了所提控制策略的可行性和有效性.

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	姬凯
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关键词 ：无刷双馈发电机, 独立运行, 直接电压控制, 空间矢量调制, 变速恒频

Abstract：In this paper, a novel control strategy of variable speed constant frequency for stand-alone brushless doubly fed induction generator was described. Based on the mathematical model, the direct voltage control using space-vector modulation was presented and discussed particularly. The model of the generator power system also used to compute the estimated value of converter’s output voltage, and current loop was simplified, the space vector modulation is adopted for the converter. It inherits quick dynamic performance and robust but also keep switch frequency constant and reduce the harmonic and ripple. In addition, a new initial rotor position detection technique based on phase-locked loop is presented to obtain correct alignment. The direct control and vector control strategy between the grid-connected and stand-alone system were also estimated and compared. Experimental results prove the feasibility and validity of the proposed control scheme.

Key words： brushless doubly fed induction generator stand-alone direct voltage control space vector modulation variable speed constant frequency

收稿日期: 2014-09-01 出版日期: 2015-09-14

PACS:

TM315

基金资助:国家科技支撑计划项目(2012BAG03B01)和国家自然科学基金(51377064)资助项目

作者简介: 姬凯男,1978年3月生,博士研究生,高级工程师,研究方向为电力电子与电力传动,新型电机系统及其控制.黄声华男,1951年10月生,教授,博士生导师,研究方向为电力电子与电力传动,新型电机系统及其控制

引用本文:

姬凯,黄声华,曾川,高跃. 独立运行无刷双馈发电机基于空间矢量调制的直接电压控制技术[J]. 电工技术学报, 2015, 30(12): 186-196. Ji Kai,Huang Shenghua,Zeng Chuan,Gao Yue. Direct Voltage Control Using Space Vector Modulation for Stand-Alone Brushless Doubly Fed Induction Generator. Transactions of China Electrotechnical Society, 2015, 30(12): 186-196.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I12/186

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