为了避免处理零动力学限制,通过紧接的变换器由双向力量流动引进了一个二倍地喂的风发电机,一为格子方面变换器的新基于精力的建模和控制途径被介绍。在当模特儿的进程期间,格子方面变换器与反馈互联结构被划分成二个分系统,并且模型的交互矩阵考虑具体端口结构。然后,一个基于精力的控制器被建议基于新模型认识到格子方面控制目的。模拟研究在 MATLAB/Simulink 被执行。在比例积分的控制器和基于精力的控制器之间的比较结果证明一个人能更快获得的后者负担水流变化的集中率和全球稳定性。而且,当与随机的风在 2 MW 风精力变换系统模仿了时,基于精力的控制器为格子方面控制也是能干的。
To avoid dealing with the zero dynamics limitation brought by the bidirectional power flow through the back-to-back converter in a doubly fed wind generator, a new energy-based modeling and control approach for the grid- side converter is presented. During the modeling process, the grid-side converter is divided into two subsystems with the feedback interconnection structure, and the interactive matrix of the model takes into account the concrete port structure. Then, an energy-based controller is proposed to realize the grid-side control objectives based on the new model. Simulation studies are carried out in MATLAB/Simulink. Comparative results between the proportional-integral controller and the energy-based controller show that the latter one can obtain faster convergence rate and global stability as the load current varies. Moreover, the energy-based controller is also competent for grid-side control when simulated in a 2 MW wind energy conversion system with random wind.