直流微网Simulink变流器模型及其计算机应用仿真研究

DC microgrid converters model and its Simulation research in computer application

新的电能系统设计时应多利用可再生能源,以减小对环境的污染。针对这样的设计初衷,分布式发电和微网应运而生。然而,由于可再生能源的强随机特性,微网系统的设计优化变得难以实现,仿真方法便成了优化解决方案的最佳选择。微网系统包含多种设备,其中最重要的是变流器。用于变流器仿真的工具主要有PSpice、PSIM,而对于直流微网网络,这种仿真工具的仿真算法较慢,且不能建立直流微网模型。针对这一问题,设计一种半桥变流器模型对直流微网潮流和静态电压进行仿真实验,并将实验结果与PSIM的模型进行对比,结果显示,这种模型建立简单,仿真速度快,具有较强的实用性。

The new electric energy system design should be use more renewable energy, reduce the pollution to the environment.For the design of the purpose, distributed generation and microgrid ap-pears.However, due to the strong random characteristics of renewable energy, for a small grid system, its design optimization has become difficult to achieve, so the simulation method became the most optimal method for optimization.A microgrid system contains a variety of equipment, one of the most important, is the electronic converters.Generally, tools for the simulation of the electronic converters is the PSpice and the PSIM, for DC microgrid, first, the simulation algorithm of simulation tools is too slow, secondly it is not allowed to establish DC microgrid model.This paper use half bridge converter model to simula-tion under the structure of micro power flow and static voltage behavior, and compared with PSIM model, according to the results, the model is simple to establish, and with faster simulation speed, it has strong practicability.