| 引用本文: | 茅靖峰,吴爱华,吴国庆,等.基于扩张状态观测的永磁直驱风力发电系统
MPPT自适应滑模控制[J].电力系统保护与控制,2014,42(18):58-65.[点击复制] |
| MAO Jing-feng,WU Ai-hua,WU Guo-qing,et al.Adaptive sliding mode MPPT control for PMSG-based wind energy conversion systems based on extended state observer[J].Power System Protection and Control,2014,42(18):58-65[点击复制] |
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| 摘要: |
| 为了提高永磁直驱风力发电系统的发电工作性能，针对风速波动范围宽和不确定强的最大功率跟踪（MPPT）控制特点，应用滑模控制理论和扩张状态观测器方法，设计了一种基于最佳叶尖速比（TSR）控制策略的最大功率跟踪自适应积分滑模控制器。控制器采用基于最佳转速跟踪偏差的积分型滑模面函数结构，确保转速跟踪控制稳态无静差。利用扩张状态观测器对风力机实时机械转矩进行估计，以获得转矩扰动上界的估计值。同时引入非线性幂次组合函数和转速跟踪偏差负反馈环节，构造基于状态偏差的滑模变速趋近律，使得切换增益具有随最佳转速跟踪偏差实现自 |
| 关键词: 风力发电系统 永磁同步发电机 最大功率跟踪 滑模控制 扩张状态观测器 自适应控制 |
| DOI： |
| 投稿时间：2013-12-01 |
| 基金项目:国家自然科学基金（61004053,61273151）；江苏省自然科学基金（BK20141238）；江苏省高校青蓝工程资助项目；江苏省高校研究生科研创新计划项目(CXLX13_681)；南通市应用研究计划项目（BK2012009,BK2013062） |
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| Adaptive sliding mode MPPT control for PMSG-based wind energy conversion systems based on extended state observer |
| MAO Jing-feng,WU Ai-hua,WU Guo-qing,ZHANG Xu-dong,WU Guo-xiang |
| (School of Electrical Engineering, Nantong University, Nantong 226019, China) |
| Abstract: |
| This paper presents a novel maximum power point tracking (MPPT) control strategy for direct-driven permanent magnet synchronous generator (PMSG) based on wind energy conversion systems (WECS). Considering wind energy’s drastically nonlinear and uncertainty features, the proposed control strategy adopts wind turbine’s optimum tip speed ratio (TSR) tracking algorithm to achieve maximum energy conversion efficiency, and implements an extended state observer (ESO) of the wind turbine aerodynamic torque with an adaptive sliding mode control (SMC) method to realize high tracking performance for the optimum TSR. The integral term in the sliding mode surface function can ensure the TSR tracking control without steady error. The wind turbine aerodynamic torque can be evaluated exactly by the ESO which increases the determinacy of wind power disturbance in MPPT control system. Due to the new reaching-law algorithm designed by power combination function and optimum speed tracking error negative feedback loop, the gain of the switch function is granted the capability of automatic adjust with TSR tracking error, and the chattering amplitude can be progressively damped. Simulation results show that the proposed controller has a better stability, adaptability and robustness compared with that of intelligent PID controller. |
| Key words: wind energy conversion systems permanent magnet synchronous generator maximum power point tracking sliding mode control extended state observer adaptive control |
