混合励磁风力发电系统灵活功率控制  

A Flexible Power Control based on Hybrid Excitation Synchronous Generator in Wind Power Generation Systems

作　　者：杨勇[1] 朱彬彬[1] 陶雪慧[1] 祁春清[2] 索迹[2] 曹丰文[2] 

机构地区：[1]苏州大学城市轨道交通学院,苏州215137 [2]苏州市职业大学,苏州215104

出　　处：《电工技术学报》2014年第1期246-254,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51377112;51307113);苏州市科技(SYG201246)资助项目

摘　　要：针对混合励磁同步发电机和风力发电系统的特点,提出一种新的混合励磁风力发电系统控制策略,实现风力发电系统最大功率跟踪和灵活的有功功率和无功功率控制。通过控制混合励磁同步发电机的励磁电流来控制电机的转速,使电机运行在最佳转速,实现风力发电系统的最大功率点跟踪。而三相并网逆变器采用静止两相坐标系下的灵活功率控制,实现有功功率和无功功率的解耦控制和灵活可调。仿真和实验结果表明:该控制策略使系统具有良好的静、动态性能,能实现风能的最大跟踪。A new control strategy is proposed based on the characteristics of hybrid excitation Synchronous Generator（HESG） and wind power generation systems, which can achieve maximum power point tracking（MPPT） and flexible control for the active power and the reactive power of the system. The speed of HESG is regulated by controlling the excitation current, which can make the speed of HESG operate in the optimal speed and will achieve maximum power point tracking. The three-phase grid-connected inverter of wind power generation systems is controlled by using the flexible power control in two-phase stationary reference frame, which can achieve decoupling and flexible control for the active power and the reactive power. Simulated and experimental results show that the system has a good steady and dynamic performance, and realizes maximum power point tracking.

关 键 词：混合励磁同步发电机 最大功率点跟踪 灵活功率控制 解耦控制 

分 类 号：TM621[电气工程—电力系统及自动化]