A Comparative Study on the Effects of Power Supply Patterns in Microgrids for DC Powered Electrical Appliances

Abstract:

To increase the energy efficiency and reduce the cost, the DC-Microgrids will have a very promising future in the power supply systems. In this paper, two power supply patterns for modern appliances, the central rectifier pattern and the distributed rectifier pattern, are investigated and compared. A concept of equivalent efficiency of diode bridge rectifier for DC-powered appliances is introduced and then it is applied in the model simplification. A Curved-Load model is constructed which is based on the specific efficiency characteristics of diode bridge rectifier in a particular current range and the statistics for appliance’s energy consumption as a percentage of the total. Using the Curved-Load model, the comparison of two microgrid system models was conducted with the help of simulations using Ansoft Simplorer 9.0 aiming to examine the conversion efficiency of rectifier patterns.

• Periodical: Advanced Materials Research (Volumes 986-987)
• Pages: 167-171
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.986-987.167
• Online since: July 2014
• Authors: Siddharth Narayanan*, Rajagopalan Badrinarayanan, Zhen Lu
• Keywords: Dc Microgrid, Electrical Appliance, Energy Storage System, Equivalent Efficiency, Phase Shifting Transformer Step-Down Rectifier

References

[1] Zhongbao Wei, Jiyun Zhao, Maria Skyllas-Kazacos, Binyu Xiong, Dynamic thermal-hydraulic modeling and stack flow pattern analysis for all-vanadium redox flow battery, Journal of Power Sources, Vol. 260, pp.89-99 (2014).

DOI: 10.1016/j.jpowsour.2014.02.108

[2] Binyu Xiong, Jiyun Zhao, etc., Thermal Hydraulic Behavior and Efficiency Analysis of an All-Vanadium Redox Flow Battery, Journal of Power Sources, pp.314-324 (2013).

DOI: 10.1016/j.jpowsour.2013.05.092

[3] Garbesi, K., Catalog of DC appliances and power systems. (2012).

[4] Bae, I. -S. and J. -O. Kim, Reliability evaluation of customers in a microgrid. Power Systems, IEEE Transactions on, 2008. 23(3): pp.1416-1422.

DOI: 10.1109/tpwrs.2008.926710

[5] Mitra, J. and M.R. Vallem, Determination of Storage Required to Meet Reliability Guarantees on Island-Capable Microgrids With Intermittent Sources. Power Systems, IEEE Transactions on, (2012).

DOI: 10.1109/tpwrs.2012.2203831

[6] Khodaei, A. and M. Shahidehpour, Microgrid-Based Co-Optimization of Generation and Transmission Planning in Power Systems. Power Systems, IEEE Transactions on, 2013. 28(2): pp.1582-1590.

DOI: 10.1109/tpwrs.2012.2224676

[7] J. Zhao, P. Saha and M. S. Kazimi, Hot Channel Stability of Supercritical Water-cooled Reactors-I: Steady State and Sliding Pressure Startup, Nuclear Technology, 158, 158-173 (2007).

DOI: 10.13182/nt07-a3833

[8] J. Zhao, P. Saha and M. S. Kazimi, Hot Channel Stability of Supercritical Water-cooled Reactors-II: Effect of Water Rod Heating and Comparison with BWR Stability, Nuclear Technology, 158, 174-190 (2007).

DOI: 10.13182/nt07-a3834

[9] J. Zhao, P. Saha and M. S. Kazimi, Core Wide (In-Phase) Stability of Supercritical Water-cooled Reactors-I: Sensitivity to Design and Operating Conditions, Nuclear Technology, 161, 108-123 (2008).

DOI: 10.13182/nt08-a3917

[10] Divshali, P.H., et al., Decentralized cooperative control strategy of microsources for stabilizing autonomous VSC-based microgrids. Power Systems, IEEE Transactions on, 2012. 27(4): p.1949-(1959).

DOI: 10.1109/tpwrs.2012.2188914

[11] Majumder, R., et al., Power management and power flow control with back-to-back converters in a utility connected microgrid. Power Systems, IEEE Transactions on, 2010. 25(2): pp.821-834.

DOI: 10.1109/tpwrs.2009.2034666

[12] Roggia, L., et al., Integrated full-bridge-forward DC-DC converter for a residential microgrid application. Power Electronics, IEEE Transactions on, 2013. 28(4): pp.1728-1740.

DOI: 10.1109/tpel.2012.2214061