基于模糊控制变环宽光伏逆变器的研究

在恒定环宽滞环电流的基础上，针对开关频率大范围变化，提出模糊控制变环宽的方法，来控制光伏并网逆变器，以此使开关频率下降．利用MATLAB进行仿真，搭建了可调滞环宽度模块，仿真结果表明：加入模糊控制后开关频率大范围下降，谐波失真小，逆变器输出波形稳定，达到了预期的控制效果．

Photovoltaic Inverter Based on the Fuzzy Control Within Variable Width

Based the current of hysteresis loop at a constant wide,according to the switching frequency variation for a wide range,fuzzy control at the variable ring wide method was proposed to control the photovoltaic grid inverter and decrease the switching frequency.According to the MATLAB simulation,the adjustable hysteresis width module was built.The simulation results show that fuzzy control led to the decline of the switching frequency in a wide range.Due to the small harmonic distortion,the waves from inverter output were stable and achieved the expected effect of control.