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Received:July 04, 2011
Received:July 04, 2011
中文摘要: 根据光伏电池的电气输出特性,建立了光伏电池的等效模型,在Boost电路中实现最大功率点跟踪控制.采用自适应变步长占空比干扰观察法,通过扰动步长的改变来获得较高的响应速度和稳态跟踪精度.仿真结果表明,该算法能够有效减小系统在最大功率比点的震荡,可以提高跟踪效率.
Abstract:According to the electrical output characteristics of photovoltaic cells，the equivalent model of photovoltaic cells is built，which achieves the maximum power point tracking control by boost circuit.Adaptive variable step duty cycle perturbation and observation is adopted，the step disturbance is changed to get higger response speed and better steady-state tracking accuracy.Simulation results show that the algorithm can effectively reduce the shock on the maximum power point and improve the tracking efficiency.
keywords: photovoltaic array maximum power point tracking self-adapting duty cycle perturbation Boost circuit
文章编号：20110601 中图分类号： 文献标志码：
基金项目:国家自然科学基金(61040013);上海市教育委员会科研创新项目(09YZ347);上海市教育委员会重点学科建设项目(J51303)
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