基于SM72295的功率优化器采样模块应用研究  

Application Research of Power Optimizer Sampling Module Based on SM72295

作　　者：徐梦明 朱建良[1] XU Meng-ming;ZHU Jian-liang(School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学自动化学院,南京210094

出　　处：《淮阴工学院学报》2021年第3期20-24,共5页Journal of Huaiyin Institute of Technology

摘　　要：功率优化器采用最大功率点跟踪技术(MPPT),来提高光伏发电效率。根据功率优化器的工作原理,设计了基于SM72295的功率优化器采样模块,降低了硬件电路设计的复杂性。采样模块包括电压和电流采样电路,其采样的精确度和速度影响MPPT和功率优化器的性能。引入中位值平均滤波算法,抑制周期性干扰,并进行样机测试。测试结果误差较小且数值稳定,表明采样模块的精确度高、抗干扰能力强。The maximum power point tracking technology(MPPT)is applied in power optimizer to improve the efficiency of photovoltaic power generation.According to the operation principle of the power optimizer,a sampling module of the power optimizer based on SM72295 is designed to reduce the complexity of hardware circuit design.The sampling module includes the voltage and current sampling circuit,whose accuracy and speed affect the performance of MPPT and power optimizer.The median average filter algorithm is introduced to suppress periodic interference and conduct the prototype test.The test result has small error and stable value,which proves that the sampling module has high accuracy and strong anti-interference capability.

关 键 词：功率优化器 最大功率跟踪技术 SM72295 中位值平均滤波 

分 类 号：TM615[电气工程—电力系统及自动化]