基于扰动观察法的无乘法器MPPT控制器研究  

An Analog MPPT Controller Research Without Multiplier Based on P&O Method

作　　者：王飞龙 刘静[1] 郑磊[1] 刘勇[1] WANG Fei-long;LIU Jing;ZHENG Lei;LIU Yong(Shanghai Institute of Space Power-sources,Shanghai 200245,China)

机构地区：[1]上海空间电源研究所,上海200245

出　　处：《电力电子技术》2020年第5期80-82,87,共4页Power Electronics

基　　金：国家高分辨率对地观测青年创新基金(GFZX04061502)。

摘　　要：针对模拟最大功率点跟踪(MPPT)控制器成本问题,提出了一种基于扰动观察法(P&O)的低成本模拟MPPT电路。利用三角波与太阳电池阵输出电压相比较形成的时钟脉冲控制开关,以太阳电池阵镜像恒流源给电容充电的方式实现对太阳电池阵输出功率的观测,解决了传统模拟MPPT控制器中依赖价格昂贵乘法器计算功率的问题。基于Saber软件进行原理分析和仿真验证,并以Boost变换器进行了相关样机的搭建。实验结果表明,该模拟MPPT控制器实现控制器成本降低的同时,追踪精度最高达99%,动态响应速度不超过10 ms。Aiming at the cost of analog maximum power point tracking(MPPT)controller,an lowcost analog is proposed to realize the MPPT circuit based on perturbation and observation method(P&O).Comparing with traditional analog MPPT controller designs which need a multiplier to calculate the power value,the method utilized a way that charging the capacitor with a mirror current source to observe the power,which reduced the cost of MPPT controller significantly.The whole circuit has been implemented and validated on both simulation in Saber and hardware platforms with a Boost converter.The results show good tracking accuracy(more than 99%)and high responding speed(less than 10 ms)under variable solar irradiation.At the same time,the whole cost is reduced.

关 键 词：控制器 最大功率点跟踪 变换器 

分 类 号：TM571[电气工程—电器]