DSP控制的3kW非隔离型并网逆变器研究

摘要

提出了一种基于DSP控制的非隔离型并网逆变器的实现方案.介绍了该并网逆变器结构及原理,给出了基于DSP控制的硬件和软件的总体设计,实现了基于电压扰动观察与控制的最大功率点跟踪( MPPT)和无差拍控制的并网控制策略,并测试了其孤岛保护,完成了3 kW的实验样机及相关实验,对实验波形的分析证明了该控制策略和方案的有效性.%This paper presents implementation scheme based on DSP control of the non - isolated grid-connected photovoltaic inverter, introduces the structure and principle of non-isolated grid - connected photovoltaic inverter. The design of hardware and software system based on DSP , control strategies of grid - connected based on MPPT and deadbeat control are presented, and islanding protection is tested.3.0 kW of prototype is completed, experimental waveforms and analysis show the control strategie and schemes are effective.