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Control and modulation of the stacked polyphase bridges inverter
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion.
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion. (High Power Electronics)ORCID iD: 0000-0002-8565-4753
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion.ORCID iD: 0000-0002-6283-7661
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion.ORCID iD: 0000-0002-0333-9128
2014 (English)In: IEEE Energy Conversion Congress and Exposition, IEEE, 2014, 3023-3029 p.Conference paper, Published paper (Refereed)
Abstract [en]

In order to meet the requirements of future electric vehicle (EV) drive systems, new converter topologies are required. The stacked polyphase bridges (SPB) inverter is a new topology which is well adapted to the needs for future EVs. In addition to low power losses, the SPB inverter also has fault tolerance ability and good dynamic behavior. This paper presents a further analysis of the control and modulation concept of the SPB inverter. Simulation results are used to verify the analysis conclusions.

Place, publisher, year, edition, pages
IEEE, 2014. 3023-3029 p.
Keyword [en]
Inverters;harmonic analysis;capacitors; modulation
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
SRA - Energy
Identifiers
URN: urn:nbn:se:kth:diva-166468DOI: 10.1109/ECCE.2014.6953811Scopus ID: 2-s2.0-84934300463ISBN: 978-1-4799-5776-7 (print)OAI: oai:DiVA.org:kth-166468DiVA: diva2:811145
Conference
6th Annual IEEE Energy Conversion Congress and Exposition (ECCE’14), Pittsburgh, USA, September 14-18 2014
Funder
StandUp
Note

QC 20150520

Available from: 2015-05-11 Created: 2015-05-11 Last updated: 2016-11-24Bibliographically approved
In thesis
1. Integrated Compact Drives for Electric and Hybrid Electric Vehicles
Open this publication in new window or tab >>Integrated Compact Drives for Electric and Hybrid Electric Vehicles
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

To develop more competitive solutions, one of the trends in the development of drive systems for electric and hybrid electric vehicles (EVs/HEVs) is to integrate the power electronic converter and the electric motor. This thesis aims to investigate the performance and the operation of modular converters in integrated motor drive systems for EVs/HEVs.

In the first part, the concept of integrated modular motor drive systems for EVs/HEVs is introduced. Three suitable modular converter topologies, namely, the stacked polyphase bridges (SPB) converter, the parallel-connected polyphase bridges (PPB) converter and the modular high frequency (MHF) converter, are evaluated and compared with conventional electric drives in terms of power losses, energy storage requirements, and semiconductor costs.

In the second part of the thesis, the harmonic content of the dc-link current of the SPB converter is analyzed. By adopting an interleaving modulation the size of the dc-link capacitor can be reduced without increasing the switching frequency, which is beneficial for achieving a compact integrated system. This method allows for around 80% reduction of the dc-link capacitance for vehicle drives, resulting in a significant size reduction of the power converter and improved integration.

Finally, a communication-based distributed control system for the SPB converter is presented. The communication delay arising from the serial communication is inevitable, thus a timing analysis is also presented. It has been found that stability is maintained even when the baud rate of the SPI communication is lower than 1 Mbps, indicating that other communication protocols with lower bandwidths can also be adopted for this topology.

The analytical investigations provided in this thesis are validated by experiments on a four-submodule laboratory prototype. Experimental results verify the correctness of the theoretical analysis, as well as the dynamic performance of the distributed control system.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2016. 123 p.
Series
TRITA-EE, ISSN 1653-5146
Keyword
distributed control, electric vehicle, energy storage capability, integrated motor drive, modular converter, modulation, power losses, stacked polyphase bridges converter, switching frequency
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
urn:nbn:se:kth:diva-196732 (URN)978-91-7729-196-1 (ISBN)
Public defence
2016-12-19, F3, Lindstedtsvägen 26, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20161121

Available from: 2016-11-21 Created: 2016-11-18 Last updated: 2016-11-21Bibliographically approved

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Norrga, StaffanWallmark, OskarNikouei Harnefors, Mojgan

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