双PWM永磁同步风力发电控制器设计  

Design on the Controller of Dual-PWM PMSG Wind Turbine Systems

作　　者：周奕鑫 王孝洪[1,2] 田联房[1] 

机构地区：[1] 华南理工大学自动化科学与工程学院,广东广州510640 [2] 华南理工大学自动化科学与工程学院,广东广州510640 [3]广东省绿色能源重点实验室,广东广州510640

出　　处：《电气传动》2014年第7期24-29,共6页Electric Drive

基　　金：广东省教育部产学研结合项目(2012B091100299);广东省教育厅科技创新重点项目(2012CXZD0008);广东省高等学校学科与专业建设专项资金(粤财教2010-275);广州市番禺区科技攻关项目(2010-Z-12-04,2011-Z-02-415)

摘　　要：传统风力发电系统通常采用光电编码器检测电机转子位置,系统成本较高、可靠性较差。考虑到滑模变结构对环境变化具有很强的适应性,结合最大功率跟踪法,设计了基于滑模观测器的双PWM永磁直驱小型风力发电系统,针对机侧控制器进行理论分析与实验研究。结果表明,滑模观测器对负载扰动及参数误差具有很强的鲁棒性,在较高频率范围内准确估计转子位置。而控制器通过调整风机转速能达到最大风能捕获,适用于小型风力发电。Traditional wind power generation system usually uses photoelectric encoder to detect the rotor position which has high cost and poor reliability. Considering the suitability of sliding-mode variable structure control in case of disturbance and parameter variation, dual-PWM PMSG wind turbine systems based on sliding mode observer was designed combined with maximum power point tracking method. Theoretical analysis and experimental research for the generator-side controller was done. The results show sliding mode observer has high robustness for the disturbance of load and parameter error and it estimated exact rotor operation in a wider range of frequencies. Controller can capture the maximum wind-energy through adjusting the generator speed for small wind turbines.

关 键 词：永磁同步电机 双PWM变流器 最大功率跟踪 滑模观测器 风力发电 拓展电动势 

分 类 号：TM46[电气工程—电器]