【摘要】 根据光伏电池模型和控制电压-输出功率特性,光伏电池最大输出功率和对应控制电压随外界环境特别是光照强度变化而偏移。利用最大输出功率与对应控制电压变化关系得到补偿电压,改进基于功率预测的变步长扰动观察法实现最大功率跟踪,提高跟踪快速性,稳定性和准确性。仿真表明,该方法可提高最大功率和对应控制电压跟踪的有效性。更多还原

【Abstract】 According to photovoltaic cells model and the characteristics between control voltage and output power, the maximum output power of photovoltaic cells and the corresponding control voltage will offset with the change of external environment,especially the light intensity. In this paper,the disturbance observation method with power prediction and voltage compensation based on the slope of the maximum output power and control voltage has been studied. It has described that the method improve tracking speed,stability and accuracy. Simulation proved that the method of maximum power and corresponding control voltage to track the effectiveness.更多还原