【摘要】 提出了一种由双向Boost变换器组成的新型光伏逆变器。该拓扑结构简单紧凑,无需直流分裂电容,开关频率低,通过占空比的调节,能在一个功率级内产生幅值高于输入直流电压的交流电压,适用于AC模块。详细分析了所提逆变器的工作原理,利用状态空间平均法建立了系统数学模型,并详细阐述了滑模控制原理。采用滑模控制方法,在Matlab/Simulink环境下建立了控制系统的仿真模型。仿真结果验证了该变换器的优点和滑模控制方法的有效性。更多还原

【Abstract】 A novel Boost PV inverter topology including only five switches and two power diodes with a compact structure and low switch frequency was proposed.It had no DC capacitor,could generate an AC output voltage larger than the input one in a single stage,and could be used in AC module.The operation principle was analyzed in detail and the mathematics model was founded by the state-space average method.Also,the sliding mode control theory was described in detail.The model of the control system was constructed in Matlab/Simulink by slide control method,and the simulation results are given to verify the validity and effectiveness of the proposed inverter.更多还原