离网型微水电交流励磁控制策略研究  

Research of Ac Excitation Control Strategy for Off-Grid Micro Hydropower

作　　者：叶阳建 肖蕙蕙[1] 李山[1] 古亮[1] 

机构地区：[1]重庆理工大学电子信息与自动化学院,重庆400054

出　　处：《重庆理工大学学报（自然科学）》2016年第2期119-126,共8页Journal of Chongqing University of Technology：Natural Science

基　　金：重庆市教委科研基金项目(KJ1400914);重庆市科委科研基金项目(cstc2013jcyj A90019)

摘　　要：为提高离网微水电输出电压的稳定性和微水资源利用率,将交流励磁发电机的励磁矢量控制技术应用于离网型微水电中进行分析研究。首先,阐明了离网型微水电交流励磁系统的结构;其次,分析并建立了交流励磁发电机和双PWM的数学模型;然后在此基础上,探讨了离网运行状态下转子侧变换器和定子侧变换器励磁矢量控制策略,分别用于定、转子变换器的控制;最后,基于Matlab仿真平台,建立了相应的仿真模型,对离网微水电交流励磁控制系统中平衡负载的变化进行了仿真研究,从而验证了策略的可行性和有效性。To improve the output voltage stability of the off-grid micro hydropower and utilization of micro water resources,this article brought the ac excitation generator excitation vector control technology to the off-grid micro hydropower and made an in-depth analysis and research. Firstly,this paper introduced the off-grid micro hydropower structure of ac excitation system. Secondly,we analyzed and established the mathematical model of ac excitation generator and dual PWM converter. Then on this basis,we discussed the excitation vector control strategy of the rotor side converter and the stator side converter under the off-grid running status,respectively for controlling the stator and the rotor side converter side converter. Finally,based on the simulation platform of Matlab / Simulink,we established the corresponding simulation model and carried out simulation research for the off-grid microhydropower ac excitation control system of balanced load change,verifying the feasibility and validity of the control strategy.

关 键 词：离网 微水电 交流励磁 双PWM控制 

分 类 号：TK39[动力工程及工程热物理—热能工程] TM301.2[电气工程—电机]