摘要
针对浮子式波浪发电系统输入机械转矩波动对电机稳定运行的影响,以及浮子运动速度(电机转速)的快速调节对波浪能跟踪捕获的作用,提出一种基于滑模控制方法的机侧PWM变换器双闭环控制策略。在双闭环控制策略中,内环电流控制器采用PI控制,外环转速控制器采用滑模控制,利用滑模控制方法的快速性和鲁棒性实现电机转速的快速稳定调节与跟踪。仿真结果验证了所提控制策略的有效性。
Considering the influence of fluctuant mechanical torque on the stability of generator in wave power genera- tion system of float-type, and the positive role of rapid regulation of float velocity (generator speed) in tracking the cap- ture of wave power, a dual closed loop control for generator-side pulse width modulation (PWM) converter is proposed based on sliding-mode control. In this system, proportion-integration (PI) controllers are adopted in the inner loop for current control, and a sliding-mode controller is used in the outer loop for speed control. With its rapidness and robust- ness of the sliding-mode control, the regulation and tracking of generator speed are realized rapidly and stably. Simula- tion results verify the effectiveness of the proposed strategy.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2016年第11期130-134,共5页
Proceedings of the CSU-EPSA
基金
国家自然科学基金资助项目(51577124)
天津市自然科学基金应用基础与前沿技术研究计划资助项目(11JCYBJC07900
15JCZDJC32100)
关键词
波浪发电
浮子式
转速控制
滑模控制
PWM变换器
wave power generation
float-type
speed control
sliding-mode control
PWM converter