基于低压微电网的逆变器控制策略设计

Design of inverter control strategy based on low voltage micro-grid

在低压微电网系统中,由于其线路的阻抗为阻性,为确保电网系统线路的阻抗值和逆变器的输出阻抗值之间能够相互匹配,在对逆变器的控制策略手段上引入了阻性虚拟阻抗技术.本文从低压微电网的结构出发,结合实践分析了低压微电网的逆变器控制策略,并以仿真试验的形式对提出的逆变器控制策略进行了检测.最终证明,提出的相关逆变器的控制策略性能稳定,无论是在孤网模式下,还是在并网模式下,其控制效果均表现优良.

In the low voltage micro grid system, because of its impedance circuit for resistance, to ensure that the impedance of the grid system is the line between value and the inverter output impedance to match each other, on the inverter control strategy means impedance virtual impedance technology is introduced. In this paper, starting from the structure of low voltage micro power grid, in this paper, the practice of low voltage micro grid inverter control strategy, and in the form of simulation test of the inverter control strategies were tested. Finally, the control strategy of the proposed inverter is stable, whether in the isolated network mode or in the grid mode, the control effect is excellent.