微电网逆变电源电流内环控制算法研究

三电平拓扑结构能够有效提高微电网系统下逆变电源输出波形质量，改善供电电能质量、减小开关频率、降低谐波含量。本文结合微电网对逆变电源特性的要求，以三相光伏逆变电源为例，详细介绍了三相三电平逆变电源电流内环控制算法原理，参数的确定以及算法的实现。通过MATALB仿真，验证了基于SVPWM控制算法的电流内环控制方法具有效果好、控制简单等优点，能很好的满足微电网系统对逆变电源特性的要求。

Research on algorithm of current inner loop for Micro-grid inverter

Because of the superiority such as higher power quality, lower harmonic components, better electromagnetic compatibility, and lower switching losses in its output, three-level inverter could be a better choice for the Micro-grid. Combined with the needs of Micro-grid system to the inverters, this paper takes the three-phase PV inverter as an example, introduces process of its current inner loop control algorithm to achieve. This control algorithm based on SVPWM has some excellences verified by MATLAB simulation, such as simple control arithmetic, good effect, and can perfectly meet the characteristics requirement of the Micro-grid to the inverter power.