摘要
为了获得比较理想的正弦输出电压,优化逆变器的性能,基于Buck-Boost光伏逆变器,采用了离散滑模变结构的控制策略。Buck-Boost光伏逆变器可以获得比直流输入电源高或低的交流输出电压,详细分析了所提逆变器的拓扑结构和工作原理,利用状态空间平均法建立了系统数学模型,并详细阐述了离散滑模控制原理。利用Matlab/Simulink工具对控制系统进行了仿真研究,仿真结果表明采用离散滑模控制的Buck-Boost光伏逆变器对系统扰动和负载变化具有很强的鲁棒性,系统具有良好的动态响应。
In order to obtain excellent sinusoidal output voltage and optimize performance of inverters, the discrete sliding mode control strategy based on Buck-Boost inverter was adopted in this paper. Buck-Boost photovoltaic inverter could obtain AC output voltage higher than or lower than input DC voltage. The operation principle was analyzed in detail and the mathematics model was built by the state-space average method. The discrete sliding mode control theory was described in detail. The simulation studies of the control system were constructed by Matlab/Simulink tool. The simulation results indicate that buck-boost inverters provide good robustness to system disturbance and load change, and the system also has good dynamic response.
出处
《电源技术》
CAS
CSCD
北大核心
2012年第9期1354-1356,1360,共4页
Chinese Journal of Power Sources
