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A modular speed-drooped system for high reliability integrated modular motor drives

Galassini, Alessandro; Costabeber, Alessando; Gerada, C.; Buticchi, Giampaolo; Barater, Davide


Alessandro Galassini

Alessando Costabeber

Giampaolo Buticchi

Davide Barater


Future transportation challenges include a considerable reduction in pollutant emissions at a time when significant increase in demand is predicted. One of the enabling solutions is the electrification of transport systems as this should lead to improved operability, fuel savings, emission reduction, and maintenance. While state-of-the-art technology has demonstrable benefits there needs to be considerable advancement to meet future transportation affordability and emission targets. Primarily, electrical drives need an improved power density, an increased reliability, and a reduced specific cost. For this reason, integrated modular motor drives (IMMDs) present an attractive solution. Modularity leads to redundancy and easier integration. This paper presents a novel speed-drooped control system applied to motors fed by modular paralleled converters. This control technique allows precise speed regulation and power sharing among different segments showing improved fault tolerance and reliability. The design procedure and the power sharing dynamic have been presented and analyzed by means of MATLAB/Simulink and validated in a 3-kW experimental rig, showing good agreement with the expected performances


Galassini, A., Costabeber, A., Gerada, C., Buticchi, G., & Barater, D. (2016). A modular speed-drooped system for high reliability integrated modular motor drives. IEEE Transactions on Industry Applications, 52(4),

Journal Article Type Article
Acceptance Date Feb 29, 2016
Publication Date Jul 15, 2016
Deposit Date Aug 10, 2016
Publicly Available Date Aug 10, 2016
Journal IEEE Transactions on Industry Applications
Print ISSN 0093-9994
Electronic ISSN 1939-9367
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 52
Issue 4
Keywords Drives, electrical machines, parallel converters,
speed-droop, voltage-source converter (VSC)
Public URL
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