Date of Award

1-1-2019

Document Type

Thesis

Degree Name

M.S.

Department

Electrical Engineering

First Advisor

David Wenzhong Gao, Ph.D.

Keywords

Control, Microgrid, Power system, Renewable energy

Abstract

As one of widely deployed renewable energy resources, PV power is playing a very important role in microgrids today. It has advantages such as making the best of natural solar energy and being friendly to our environment. In this thesis, solar PV based microgrid is studied using modeling and simulation. Microgrid can run in either grid-connected-mode or islanded-mode. However, there are also some disadvantages for solar power. For solar panel, its output is influenced by weather conditions such as illumination intensity and temperature. In addition, during the control process of grid-connected mode, it is hard to guarantee its output power at the maximum power point all the time. In this thesis, the Maximum Power Point Tracking (MPPT) control for Solar PV energy is used. Besides, the frequency control is also a very important issue for guaranteeing the quality of the electricity in the microgrid. By using an effective way of BESS-VSG, which means Battery Energy Storage System-Virtual Synchronous Generator, the frequency can be controlled to the nominal value faster and more smoothly when there is a fluctuation in the PV power generation and/or load change, leading to higher stability and robustness.

This thesis focuses on the modeling and control of the PV and BESS-VSG system, and the proposed modeling and control method are verified in MATLAB/Simulink.

Publication Statement

Copyright is held by the author. User is responsible for all copyright compliance.

Provenance

Received from ProQuest

Rights holder

Wei Gao

File size

82 p.

File format

application/pdf

Language

en

Discipline

Electrical engineering

Share

COinS