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中文摘要：
对光伏发电系统提出了一种新的最大功率点跟踪（MPPT）控制方法，即在外界环境或负载突变时．先采用固定电压法将光伏阵列的工作点调整到最大功率点附近，以保证跟踪的快速性：在此基础上引入小步长的扰动观察法，对最大功率点处的稳态特性进行优化．可有效减小光伏阵列的输出功率在最大功率点的振荡现象。对固定电压法、扰动观察法以及所提的两者的结合方法分别进行仿真．结果表明．所提方法能够快速、准确地跟踪光伏阵列的最大功率点，减少了在最大功率点振荡的能量损失．提高了光伏发电系统的能量转换效率．
英文摘要：
A MPPT（Maximum Power Point Tracking） control method of PV（PhotoVoltaic） generation system is proposed,which applies CV（Constant Voltage） method to adjust the working point of PV array near the MPP （Maximum Power Point） for fast tracking when external conditions or loads change suddenly,and uses PO （Perturb and Observe） method with small-step to optimize the steady state characteristic of MPP for effective reducing the output power oscillation around MPP. The CV,PO and proposed methods are simulated respectively and results show that,the proposed method tracks the MPP exactly and quickly and improves the energy conversion efficiency of PV generation system by reducing the output power oscillation around MPP.
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