Dynamic Electro- Thermal Model of Power Electronic Building Block in Micro Grid: Modeling, Analysis and Simulation

Abstract

To interconnect micro-grid with electric power system, converters play vital roles. As a set of parallel-connected converters, Power Electronics Building Block, owns advantages in efficiency and merits such as low cost maintenance and upgrade. Thermal management is critical in PEBB-based system. The thesis aims to build a dynamic electro-thermal model, including temperature-dependent power loss calculation and a comprehensive thermal model. The focus is to develop theoretical framework and supporting tool for modeling, analysis and simulation. This model is proved to possess the accuracy of Finite Element Method and also makes use of the convenience of resistor-capacitor network. The developed model can be used in many applications, especially applied in an intelligently scheduled PEBB parallel operation system connected in micro grid.

All modeling methodologies, analysis and simulation proposed and realized, using MATLAB/Simulink and COMSOL, throughout the course of development have been thoroughly verified together with Manufacture datasheets or IEEE Standards.