An Adaptive Control System for a DC Microgrid for Data Centers
- 18 November 2008
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industry Applications
- Vol. 44 (6), 1910-1917
- https://doi.org/10.1109/tia.2008.2006398
Abstract
In this paper, an adaptive control system for a dc microgrid for data centers is proposed. Data centers call for electric power with high availability, and a possibility to reduce the electric losses and, consequently, the need for cooling. High reliability can be achieved by using local energy sources, and by using a dc power system, the number of conversion steps, and therefore also the losses, can be reduced. The dc microgrid can also supply closely located sensitive ac loads during outages in the ac grid. The proposed dc microgrid can be operated in eight different operation modes described here, resulting in 23 transitions. The control system coordinates the operation of converters, sources, and switches used in the dc microgrid. The control system is tested in the simulation software package PSCAD/EMTDC, and the results of the most interesting transitions are presented. The results show that it is possible to use the proposed dc microgrid to supply sensitive electronic loads and also, during ac-grid outages, supply closely located sensitive ac loads. To reduce the current transients experienced by grid-connected ac/dc converters, fast grid-outage detection and fast switches are required.Keywords
This publication has 14 references indexed in Scilit:
- Low-Voltage DC Distribution System for Commercial Power Systems With Sensitive Electronic LoadsIEEE Transactions on Power Delivery, 2007
- Blades have the edge [blade serversIEEE Spectrum, 2005
- Micro-Grid Autonomous Operation During and Subsequent to Islanding ProcessIEEE Transactions on Power Delivery, 2005
- Operation of a prototype microgrid system based on micro-sources quipped with fast-acting power electronics interfacesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Feasibility of a DC network for commercial facilitiesIEEE Transactions on Industry Applications, 2003
- Microgrids and sensitive loadsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- MicroGridsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Shape of the microgridPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Internet Data Centres (IDC): design considerations for mission critical power system performancePublished by Institution of Engineering and Technology (IET) ,2001
- Power distribution systems for future homesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1999