| 引用本文: | 方云熠,曾喆昭,刘晴,王可煜.永磁直驱风力发电系统最大功率跟踪非线性抗扰控制[J].电力系统保护与控制,2019,47(5):145-151.[点击复制] |
| FANG Yunyi,ZENG Zhezhao,LIU Qing,WANG Keyu.Maximum power point tracking withnonlinear disturbance rejection control for DPMSG wind power generation system[J].Power System Protection and Control,2019,47(5):145-151[点击复制] |
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| 摘要: |
| 针对永磁同步发电机的非线性、内部参数不确定以及外部扰动等问题，提出了一种直驱式永磁同步风力发电系统最大功率跟踪的非线性抗扰控制方法。该方法使用一种非线性光滑函数来设计非线性扩张状态观测器(NLESO)和非线性抗扰控制律。由NLESO来实现系统扰动及不确定性的估计，前馈到控制输入端对扰动进行补偿，从而有效提高了系统的抗扰能力。分析了NLESO的收敛性。仿真结果表明了该控制方法不仅具有响应速度快、控制精度高的特点，而且无超调无抖振现象，因而在风力发电系统最大功率跟踪控制领域具有较大应用价值。 |
| 关键词: 风力发电 永磁同步电机 最大功率跟踪 非线性扩张状态观测器 非线性光滑函数 非线性抗扰控制 |
| DOI：10.7667/PSPC180240 |
| 投稿时间：2018-03-08修订日期：2018-05-01 |
| 基金项目:湖南省教育厅重点项目资助(17A006) |
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| Maximum power point tracking withnonlinear disturbance rejection control for DPMSG wind power generation system |
| FANG Yunyi,ZENG Zhezhao,LIU Qing,WANG Keyu |
| (School of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410014, China) |
| Abstract: |
| Considering the permanent magnet synchronous generators with nonlinear, uncertain internal parameters and external disturbances, a nonlinear disturbance rejection control method is proposed to achieve Maximum Power Point Tracking (MPPT) of direct-driven permanent magnet synchronous generators wind power generation system. The Nonlinear Extended State Observer (NLESO) and nonlinear disturbance rejection controller are designed based on a nonlinear smoothing function. NLESO is used to estimate the system disturbance and uncertainty and feed forward to the control input to achieve disturbance compensation, which enhances the disturbance rejection ability of the system. And the astringency of NLESO is analyzed. The simulation results show that the control method not only has the characteristics of fast response and high control accuracy, but also has no overshoot and no chattering phenomenon, so it has great application value in the MPPT control of wind power generation system. This work is supported by Project of the Key Subject of Hunan Education Department (No. 17A006). |
| Key words: wind power generation permanent magnet synchronous generators maximum power point tracking nonlinear extended state observer nonlinear smoothing function nonlinear disturbance rejection control |
