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针对现有太阳能最大功率点跟踪控制策略的不足,提出了一种新型的最大功率点跟踪控制策略,即基于电流单参量的最大功率点跟踪(MPPT)。首先阐述了该最大功率控制策略的基本原理与可行性,并重点描述了该最大功率点跟踪控制策略的系统设计与调试,其中侧重于系统核心设计:电流监控电路设计和基于纯CMOS数字电路硬件逻辑程序的步进PWM控制器设计,并且详细分析了其工作原理及元器件的选取。经调试与完善,该MPPT控制系统现已能实现最大功率点跟踪,同时显示出它区别于其他控制策略的优势。
Aiming at the shortcomings of current maximum power point tracking control strategy of solar energy, a new maximum power point tracking control strategy is proposed, which is based on single-parameter current maximum power point tracking (MPPT). Firstly, the basic principle and feasibility of the MPPT strategy are described. The system design and debugging of the MPPT strategy are described emphatically. The emphasis is placed on the system core design: the design of the current monitor circuit and the hardware based on the pure CMOS digital circuit Logic program step PWM controller design, and a detailed analysis of its working principle and component selection. After debugging and improvement, the MPPT control system is now able to achieve the maximum power point tracking, at the same time it shows the advantage it is different from other control strategies.