作　　者： ; ; ; ; ;

机构地区： 广东工业大学自动化学院

出　　处： 《高电压技术》 2008年第5期955-960,共6页

摘　　要： 矩阵变换器(MC)是一类交交变换器,没有中间直流环节,具有功率双向流动的能力。采用MC励磁的无刷双馈风力发电系统,是较理想的变速恒频发电方案,能否有效地实现系统有功功率和无功功率的解耦控制,是提高系统稳定性和实用性的关键。为此,从两相坐标系出发,研究MC的瞬时无功功率和有功功率,根据风力机最大风能捕获控制策略、无刷双馈电机的有功功率和无功功率的数学模型,提出了基于反向传播神经网的功率控制方案,应用Matlab/Simulink建立了系统的仿真模型。仿真结果表明,反向传播神经网功率解耦控制系统有快速的动态响应、较强的鲁棒性,能实现对整个系统的有功功率和无功功率的独立控制,从而验证了控制策略的有效性。 The realization of decoupling control of the active power and reactive power in the system is a key problem to improve stability and feasibility of the variable speed constant frequency wind energy conversion system. The instantaneous active power and reactive power of matrix converter （MC） were researched in two axis coordinates. According to the maximum wind power capture strategy of wind energy conversion system and the mathematical model of the active power and reactive power of brushless doubly-fed machine （BDFM）, a new type of power control system was developed based on BP neural networks. The simulation model of the system was established with the Matlab/Simulink software. With the system of power decoupling control, the simulation results showed that the active power and reactive power were successfully controlled independently. The system had the fast dynamic response, perfect static characteristics and good robustness. The system can adjust the reactive power of the grid to satisfy the requirements of the electric power system. The feasibility of control strategy was verified by the good performance of the controller. A kind of good foundation was given for the design and effective real-time control of the large-scale wind power generation system based on the BDFM.

关 键 词： 矩阵变换器 空间矢量调制 无刷双馈风力发电机 解耦控制 有功功率 无功功率 反向传播神经网

领　　域： [自动化与计算机技术] [自动化与计算机技术] [电气工程]