| 引用本文: | 卫志农,俞小勇,吴佳佳.基于自抗扰控制的双馈发电机无速度传感器控制[J].电力自动化设备,2011,31(1): |
| WEI Zhinong,YU Xiaoyong,WU Jiajia.Speed sensorless control of DFIG based on ADRC[J].Electric Power Automation Equipment,2011,31(1): |
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| 摘要: |
| 针对传统PID技术难以实现高精度控制，引入自抗扰控制技术，应用气隙磁链定向的矢量控制原理，建立基于变速恒频双馈发电机的转子电流自抗扰控制模型。采用扩张状态观测器对电压方程中的耦合项和气隙磁链等扰动项进行观测并加以补偿，提高了系统的跟踪性能；并用含转子角转速的观测估计值算出转子角转速，实现了无速度传感器控制。通过Matlab/Simulink仿真验证了无速度传感器控制的有效性，并表明自抗扰控制系统在风速变化时有比PID控制更小的超调量和更快的响应速度，对电网电压的波动有较好的抑制能力。 |
| 关键词: 风力发电 双馈发电机 自抗扰控制 无速度传感器控制 |
| DOI： |
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| 基金项目:中央高校基本科研业务费专项资金资助项目（2009XJTUJC11） |
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| Speed sensorless control of DFIG based on ADRC |
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WEI Zhinong, YU Xiaoyong, WU Jiajia
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College of Energy and Electrical Engineering，Hohai University，Nanjing 210098，China
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| Abstract: |
| As the control accuracy of traditional PID technology is low，the ADRC（Active Disturbance Rejection Control） technique is introduced to build the rotor current model of doubly-fed induction generator based on the air gap flux-oriented vector control theory. Extended state observer is used to observe and compensate the coupling terms in voltage equations and the disturbing terms of air gap flux，which improves the system tracking performance. The rotor angular velocity is calculated with the observed estimations， including the rotor angular velocity，to realize the speed sensorlesss control. Simulation with Matlab/Simulink verifies its effectiveness and shows that，compared with PID control，ADRC has smaller overshoot and faster response speed when the wind speed changes，which suppresses the grid voltage fluctuation. |
| Key words: wind farm doubly-fed induction generator active disturbance rejection control speed sensorless control |
