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Title: Paralleling of buck converters for DC microgrid operation
Authors: Zammit, Daniel
Spiteri Staines, Cyril
Apap, Maurice
Micallef, Alexander
Keywords: Electric current converters
Microgrids (Smart power grids)
Electric controllers
Issue Date: 2016-04
Publisher: Institute of Electrical and Electronics Engineers
Citation: Zammit, D., Spiteri Staines, C., Apap, M., & Micallef, A. (2016). Paralleling of buck converters for DC microgrid operation. International Conference on Control, Decision and Information Technologies (CoDIT) 2016, Malta. 70-76. IEEE.
Abstract: This paper presents the controller design of paralleled Buck converters using Droop Control to obtain common load sharing for DC Microgrid operation. Proportional Integral (PI) controllers are used to provide nested current and voltage control of the Buck converters. Droop control is applied to obtain load sharing between the paralleled converters. Then, a voltage restoration loop is applied utilizing another PI controller to restore the desired voltage in the dc microgrid, correcting any voltage deviations caused by the droop loop. The operation of the controllers is tested by simulating two paralleled Buck converters operated in the continuous current mode while sharing a common resistive load.
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