摘要
根据常用MPPT算法的优缺点设计了一种新的名为恒压比较法(constant voltage comparison method,CVCM)的算法。此新算法把MPPT的全过程分为2个阶段执行,先将输出电压迅速锁定到预设的最大功率点的周边,再施行多点多次比较将其调度到真确的最大功率点。运用Simulink仿真证实了此新算法可以兼顾速度与准度、在到达最大功率点后能够保持稳定的运行状态以及正确应对太阳能电池外界环境的变化。相较于扰动观测法,此新算法速度提升25%、精度提升3%、震荡幅度降低66%、对温度变化的反应能力提升89%、对光照强度变化的反应能力提升94%,有助于太阳能电池效能的提升。
According to the advantages and disadvantages of the commonly used MPPT algorithm, a new algo- rithm named constant voltage comparison method （CVCM） was designed. This new algorithm divided the entire MPPT process into two phases.Firstly the output voltage was quickly locked to near the maximum power point,and then multiple comparisons were performed to find the maximum power point.Using Simulink simulation,it was con- firmed that the new algorithm can take into account the speed and accuracy,it also can maintain a stable operating state after reaching the maximum power point and correctly respond to environment changes of the solar cell.Com- pared with P＆O,this new algorithm has a 25% increase in speed,a 3% increase in accuracy,a 66% reduction in oscillation amplitude,a 89% increase in response to temperature changes and a 94% increase in response to light intensity changes ,It helps improve the efficiency of solar cells.
作者
闵轩
江智军
王华峰
MIN Xuan;JIANG Zhijun;WANG Huafeng(School of Information Engineering,Nanchang University,Nanchang 330031,China)
出处
《南昌大学学报（工科版）》
CAS
2018年第3期303-306,共4页
Journal of Nanchang University(Engineering & Technology)
