A robust control strategy using the second-order integral sliding mode control(SOISMC)based on the variable speed grey wolf optimization(VGWO)is proposed.The aim is to maximize the wind power extraction of wind turbin...A robust control strategy using the second-order integral sliding mode control(SOISMC)based on the variable speed grey wolf optimization(VGWO)is proposed.The aim is to maximize the wind power extraction of wind turbine.Firstly,according to the uncertainty model of wind turbine,a SOISMC torque controller with fast convergence speed,strong robustness and effective chattering reduction is designed,which ensures that the torque controller can effectively track the reference speed.Secondly,given the strong local search ability of the grey wolf optimization(GWO)and the fast convergence speed and strong global search ability of the particle swarm optimization(PSO),the speed component of PSO is introduced into GWO,and VGWO with fast convergence speed,high solution accuracy and strong global search ability is used to optimize the parameters of wind turbine torque controller.Finally,the simulation is implemented based on Simulink/SimPowerSystem.The results demonstrate the effectiveness of the proposed strategy under both external disturbance and model uncertainty.展开更多
为解决光伏发电储能困难,受环境影响且不稳定的问题,提出一种基于氮化镓的光伏三端口储能逆变系统。该系统采用交错并联的BUCK-BOOST三端口变换电路实现最大功率点跟踪(Maximum Power Point Tracking,MPPT)扰动观察法,同步整流技术、串...为解决光伏发电储能困难,受环境影响且不稳定的问题,提出一种基于氮化镓的光伏三端口储能逆变系统。该系统采用交错并联的BUCK-BOOST三端口变换电路实现最大功率点跟踪(Maximum Power Point Tracking,MPPT)扰动观察法,同步整流技术、串联谐振软开关技术以及选用第三代半导体氮化镓作为功率MOS管,降低了电能损耗,解决了电磁干扰大、出现电磁兼容性等问题,提高了太阳能的利用率并且延长了蓄电池的使用寿命,具备灵活升降压和功率双向流动的特点,结构简单,相对于传统多级变换器提高了功率密度,更适用于光伏储能微网系统。最后,用MATLAB/Simulink仿真模拟并分析不同光照强度下系统的工作状态,仿真结果验证了所提独立光伏三端口逆变系统的正确性及其有效性。展开更多
基金This work was supported by the National Natural Science Foundation of China(No.51876089)the Fundamental Research Funds for the Central Universities(No.kfjj20190205).
文摘A robust control strategy using the second-order integral sliding mode control(SOISMC)based on the variable speed grey wolf optimization(VGWO)is proposed.The aim is to maximize the wind power extraction of wind turbine.Firstly,according to the uncertainty model of wind turbine,a SOISMC torque controller with fast convergence speed,strong robustness and effective chattering reduction is designed,which ensures that the torque controller can effectively track the reference speed.Secondly,given the strong local search ability of the grey wolf optimization(GWO)and the fast convergence speed and strong global search ability of the particle swarm optimization(PSO),the speed component of PSO is introduced into GWO,and VGWO with fast convergence speed,high solution accuracy and strong global search ability is used to optimize the parameters of wind turbine torque controller.Finally,the simulation is implemented based on Simulink/SimPowerSystem.The results demonstrate the effectiveness of the proposed strategy under both external disturbance and model uncertainty.
文摘为解决光伏发电储能困难,受环境影响且不稳定的问题,提出一种基于氮化镓的光伏三端口储能逆变系统。该系统采用交错并联的BUCK-BOOST三端口变换电路实现最大功率点跟踪(Maximum Power Point Tracking,MPPT)扰动观察法,同步整流技术、串联谐振软开关技术以及选用第三代半导体氮化镓作为功率MOS管,降低了电能损耗,解决了电磁干扰大、出现电磁兼容性等问题,提高了太阳能的利用率并且延长了蓄电池的使用寿命,具备灵活升降压和功率双向流动的特点,结构简单,相对于传统多级变换器提高了功率密度,更适用于光伏储能微网系统。最后,用MATLAB/Simulink仿真模拟并分析不同光照强度下系统的工作状态,仿真结果验证了所提独立光伏三端口逆变系统的正确性及其有效性。
