| 电网电压不平衡双馈风力发电机改进控制方法 |
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| 引用本文： | 杨国清,陈谦,王德意.电网电压不平衡双馈风力发电机改进控制方法[J].电力系统及其自动化学报,2011,23(4):72-77. |
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| 作者姓名： | 杨国清 陈谦 王德意 |
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| 作者单位： | 西安理工大学水利水电学院,西安,710048 |
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| 摘 要： | 为了有效地改善电网电压不平衡时双馈发电机(DFIG)的控制效果,提高发电机发出的电能质量,文中提出一种新的控制方法,在发电机转子侧转换器和网侧变换器使用正dq旋转坐标系正反馈的基础上增加了负dq旋转坐标系反馈控制,转子侧负反馈控制目的是降低电压不平衡引起的发电机电磁转矩的振荡,电网侧负反馈的控制目标是抑制发电机输出的不平衡电流。通过PSCAD/EMTDC环境下的仿真研究表明,该控制方法能够有效地改善电网电压不平衡时双馈发电机的性能。
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| 关 键 词： | 双馈风力发电机 对称分量 电网电压不平衡 负反馈 |
Improved Control of DFIG Wind Turbines with Unbalanced Grid Voltage |
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| YANG Guo-qing,CHEN Qian,WANG De-yi.Improved Control of DFIG Wind Turbines with Unbalanced Grid Voltage[J].Proceedings of the CSU-EPSA,2011,23(4):72-77. |
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| Authors: | YANG Guo-qing CHEN Qian WANG De-yi |
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| Affiliation: | YANG Guo-qing,CHEN Qian,WANG De-yi(Institute of Water Resource and Hydro-electricity,Xi'an University of Technology,Xi'an 71004,China) |
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| Abstract: | In order to effective improve operating performance and power quality of a doubly fed induction generators wind turbine under unbalanced grid voltage conditions,a novel control scheme was proposed.The rotor-side converter and grid-side converter of the DFIG are controlled in a positive dq reference frame as well as in a negative dq reference frame.The supplementary control of the rotor-side converter in dq reference frame restrains the electromagnetic torque pulsations of the DFIG caused by the unbalanced g... |
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| Keywords: | doubly fed induction generator(DFIG) symmetrical component unbalanced grid voltage negative feedback |
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