Improving the Performance of a Line Regulating Converter in a Converter-Dominated DC Microgrid System


This paper describes the controller design procedure for a line-regulating converter in a converter-dominated dc microgrid system. The purpose of the controller is to mitigate the effects of the constant power loads on the stability and performance of the dc microgrid system. In this work, first, the overall structure, operation, and building blocks of the dc microgrid under analysis are introduced. Next, the dynamic model of the dc microgrid and the required transfer functions for the controller design are derived. Then, two proposed controller design methods are introduced and implemented on an virtual line-regulating converter in a dc microgrid system. Finally, the controller design methods are verified experimentally using the results from a built prototype dc microgrid system.


Electrical and Computer Engineering

Keywords and Phrases

Controllers; Dynamic Models; Electric Load Forecasting; Electric Power Distribution; Building Blocks; Constant Power Load; Constant Power Loads (CPL); Controller Design Method; Controller Designs; DC Micro-Grid; Stability Analysis; Structural Design; Controller Design; DC Microgrid; Dynamic Modeling

International Standard Serial Number (ISSN)

1949-3053; 1949-3061

Document Type

Article - Journal

Document Version


File Type





© 2014 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Sep 2014