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Enhanced power sharing transient with droop controllers for multi-three-phase synchronous electrical machines

Galassini, Alessandro; Costabeber, Alessandro; Degano, Michele; Gerada, Chris; Tessarolo, Alberto; Menis, Roberto

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Alessandro Galassini

Alessandro Costabeber

Alberto Tessarolo

Roberto Menis


This paper presents a droop-based dis- tributed control strategy for multi-three-phase machines that provides augmented controllability during power shar- ing transients. The proposed strategy is able to mitigate the mutual interactions among different sets of windings without controlling any sub-space variable, also offering a modular and redundant design. On the contrary, in a centralised configuration sub-spaces would be controlled using the Vector Space Decomposition, but fault tolerance and reliability levels required by the stricter regulations and policies expected in future transportation systems would not be satisfied. The proposed method is analytically com- pared against the state-of-the-art power sharing technique and equivalent models and control design procedures have been derived and considered in the comparison. Uncon- trolled power sharing transients and their effects on mu- tual couplings among isolated sets of windings have been compared against the proposed regulated ones. Experi- mental results on a 22kW nine-phase multi-three-phase synchronous machine rig validate the design procedures showing good agreement with the expected performances.

Journal Article Type Article
Acceptance Date Aug 31, 2018
Online Publication Date Sep 6, 2018
Publication Date 2019-07
Deposit Date Nov 14, 2018
Publicly Available Date Nov 14, 2018
Journal IEEE Transactions on Industrial Electronics
Print ISSN 0278-0046
Electronic ISSN 1557-9948
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 66
Issue 7
Pages 5600-5610
Keywords Control and Systems Engineering; Electrical and Electronic Engineering
Public URL
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