NDLI: Comprehensive sharing control strategy for input-series output-parallel connected modular DC

Content Provider	IET Digital Library
Author	Abrehdari, Meysam Sarvi, Mohammad
Abstract	The systems consisting of multiple DC–DC converters with input-series output-parallel (ISOP) connection are widely used in high-power applications. In the ISOP connection, the total input voltage and output current should be divided equally between the converters. However, in order to achieve this purpose, a proper control scheme should be used. This study proposes two control schemes: (i) output current feedback (OCF) and (ii) input voltage feedback (IVF). Based on the power balance, in the IVF scheme, the total output current, and in the OCF scheme, the total input voltage are divided automatically between the converters, and there is no need to use an extra control loop. The IVF and the OCF control schemes consist of two control loops: a common output voltage regulator (OVR) loop and individual input voltage sharing loops in the IVF scheme or individual output current sharing loops in the OCF scheme. The proposed control scheme can effectively improve the stability and dynamic characteristics of system. Finally, both the results of the simulation and laboratory prototype of an ISOP system consisting two forward converters have verified the performance of the IVF and OCF control schemes.
Starting Page	3105
Ending Page	3117
Page Count	13
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 12, Oct (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.0054
Journal	IET Power Electronics
Publisher Date	2019-07-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Common Output Voltage Regulator Loop Comprehensive Sharing Control Strategy Control Loops Control of Electric Power System Current Control Current Sharing Loops DC-DC Power Converter Electric Current Control Extra Control Loop Feedback Forward Converter High-power Application Individual Input Voltage Individual Output Input-series Output-parallel Connected Modular DC–DC Converters Input-series Output-parallel Connection ISOP Connection ISOP System IVF Scheme Multiple DC–DC Converters OCF Control Scheme OCF Scheme Power Converter Power Electronics Power Supplies to Apparatus Power Supply Proper Control Scheme Supervisory Circuit Total Input Voltage Total Output Current Voltage Control Voltage Regulators
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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