摘要
针对光伏系统在部分遮挡条件下的输出功率-电压(P-V)特性曲线具有的多峰性及极值点的分布规律,提出基于改进的扰动观察法和自适应法相结合的GMPPT(Global Maximum Power Point Tracking)方法,重点阐述以TI的TMS320F28027芯片为控制核心的控制方案及实现方法。测试结果表明该系统弥补传统MPPT算法的缺陷和不足,可以快速实现在部分遮挡条件下全局最大功率点的追踪。
As the output power-voltage characteristic curve of PV system has multiple peaks operating under partially shading conditions, the global maximum power point tracking （GMPPT） based on improved P＆O and adaptive method was proposed. The system design and implementation scheme was explained with TI TMS320F28027 chip as the control core. The test results show that system conforms fully to the design requirements and can track the global maximum power point more quickly and accurately than traditional algorithms under partially shading conditions
出处
《电源技术》
CAS
CSCD
北大核心
2012年第9期1351-1353,1382,共4页
Chinese Journal of Power Sources
基金
北京市教委科技发展计划面上项目(KM20111-0011005)
北京市教委科技创新平台(PXM2011-014213-113551)
