Title

Modeling And Control Of Three-Port Dc/Dc Converter Interface For Satellite Applications

Keywords

DC-DC converters; Digital control; Mode transition; Multi-input multi-output (MIMO); Multiport; Small-signal modeling; State-space averaging

Abstract

This paper presents the control strategy and power management for an integrated three-port converter, which interfaces one solar input port, one bidirectional battery port, and an isolated output port. Multimode operations and multiloop designs are vital for such multiport converters. However, control design is difficult for a multiport converter to achieve multifunctional power management because of various cross-coupled control loops. Since there are various modes of operation, it is challenging to define different modes and to further implement autonomous mode transition based on the energy state of the three power ports. A competitive method is used to realize smooth and seamless mode transition. Multiport converter has plenty of interacting control loops due to integrated power trains. It is difficult to design close-loop controls without proper decoupling method. A detailed approach is provided utilizing state-space averaging method to obtain the converter model under different modes of operation, and then a decoupling network is introduced to allow separate controller designs. Simulation and experimental results verify the converter control design and power management during various operational modes. © 2010 IEEE.

Publication Date

4-16-2010

Publication Title

IEEE Transactions on Power Electronics

Volume

25

Issue

3

Number of Pages

637-649

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TPEL.2009.2033926

Socpus ID

77950672516 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77950672516

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