结合智能数据库的电导增量MPPT系统研究

本文针对太阳能光伏发电系统的功率输出非线性特点，提出一种结合数据库，利用电导增量实现最大功率跟踪的系统。论文根据光伏阵列的特性，建立光伏系统数学模型，采用电导增量法建立历史和实时数据库，通过数据库查询尽快跟踪功率变化，调整占空比，达到实时最大功率跟踪。系统采用MSP430作为控制器，定时方式产生PWM控制变换器开关。研究结果表明，系统可以快速跟踪最大功率变化，提高跟踪精度和输出功率，相对传统电导增量法本文方法跟踪速度提高5%-20%。

Research on Incremental Conductance MPPT System of Intelligent Database

In view of the nonlinear characteristics of power output for the solar photovoltaic power generation system, the system based on the incremental conductance maximum power point tracking of database is proposed. According to the characteristic of photovoltaic array, a mathematical model for the photovoltaic system and the historical and real-time method is established; by querying database as soon as possible, adjusting the duty cycle, real-time maximum power point tracking is achieved. MSP430 is used as the controller; the PWM is used as the control switch in the system. Research results show that the maximum power point tracking system is realized, improve the tracking accuracy and power output, compared with the traditional incremental conductance method the tracking speed improved by 5%-20%..