【摘要】 为提高偏远山区的用电质量、降低用电成本,依托山区微型水资源,在传统独立式微型水力发电系统基础上,提出了一种基于自励式不控异步发电机的可并网微型水力发电系统电路拓扑结构,采用带有输出电流反馈的电压闭环控制策略,以单位功率因数并网。利用补偿电容提供无功能量给异步电动机作微型水力系统发电部分,采用电力电子变换电路实现能量传输,减小并网能量损耗。通过搭建实验平台,验证了该系统的可行性。更多还原

【Abstract】 In order to improve the quality of the power and reduce electricity cost in the remote mountainous,relying on the micro water resources in the mountains,based on the existing independent operation of micro-hydro systems,a kind of grid-type circuit topology of micro hydro power based self-excited asynchronous generator is studied.The closed loop voltage with output current feedback is used to realize the fast control of system with unit power factor for grid-connected.Reactive energy of compensation capacitor provides to asynchronous motor as power of micro-hydro systems.Energy transfer is achieved by conversion circuit of electric electronics.The feasibility of the system is verified by experimental platform.更多还原