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Off-Vehicle Evaluation of Active Oscillation Damping Schemes
KTH, School of Electrical Engineering (EES), Electrical Energy Conversion.
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: 0000-0002-0744-2552
(Volvo Car Corporation)
2013 (English)In: 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013, 2013Conference paper, Published paper (Refereed)
Abstract [en]

Torsional drivetrains oscillations is a well known problem in electrical or hybrid electric drivetrains which may greatly influence the driving comfort. An experimental testing setup that can be used to design and evaluate active oscillation damping schemes is proposed in this paper. Instead of in-vehicle test, the drivetrain transmission is emulated from mathematic models, executed by a servo drive which is connected to the physical electrical drive system. The proposed setup functions as a hardware-in-the-loop simulator and can be easily adjusted to simulate any drivetrains without additional cost.

Place, publisher, year, edition, pages
2013.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-126111DOI: 10.1109/ECCE.2013.6646765ISI: 000345216900093Scopus ID: 2-s2.0-84891044632ISBN: 978-147990335-1 (print)OAI: oai:DiVA.org:kth-126111DiVA: diva2:641958
Conference
5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013; Denver, CO, United States, 15-19 September 2013
Note

QC 20140114

Available from: 2013-08-20 Created: 2013-08-20 Last updated: 2015-01-15Bibliographically approved
In thesis
1. Analysis and Control Aspects of a PMSynRel Drive in a Hybrid Electric Vehicle Application
Open this publication in new window or tab >>Analysis and Control Aspects of a PMSynRel Drive in a Hybrid Electric Vehicle Application
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis deals withmodeling and control of an electric drive equipped with a permanentmagnet assisted synchronous reluctance (PMSynRel) machine for a plug-in hybrid electric vehicle application.

In the first part of the thesis, a special use of the PMSynRel machine in consideration, known as an integrated charger concept, is investigated. The integrated charger feature allows using the PMSynRel machine as a part of the vehicle’s on-board charging system when charging the battery from the grid. A finite-element based analysis is performed providing important insights into the machine operation during the charging process. Dynamic models are developed that facilitate the controller development and the estimation of the efficiency during charging.

In the second part of the thesis, position sensorless control of the PMSynRel drive when applied in an automotive application is considered and analyzed thoroughly. First, a fundamental-excitation based rotor-position estimation technique is investigated. The study shows that the impact of current dynamics on the resulting torque dynamics has to be considered in some very demanding applications. Second, focus is put on signalinjection based sensorless control methods. Impacts of nonlinearities, such as magnetic saturation, cross-saturation and inductance spatial harmonics, on sensorless control performance are investigated and methods to improve the sensorless control quality are summarized and presented. An approach to determine the feasible region for operating sensorless at low-speeds without directly measuring the differential inductances is proposed. For the PMSynRel drive in consideration, the achievable maximum torque is limited when operating sensorless following the maximum-torque-per-ampere (MTPA) current reference trajectory at low-speeds. An optimization approach is therefore proposed which extends the output torque when operating sensorless while still maintaining a relatively high efficiency. To initialize the sensorless control correctly from standstill, the impact of the saturated magnetic bridges in the rotor is also investigated.

Finally, torsional drive-train oscillations and active damping schemes are considered. An off-vehicle setup for implementing and evaluating different active damping schemes is proposed. Of particular interest for sensorless operation in automotive applications, the impact of slow speed estimation on the possibility to achieve good active damping control is investigated and a design approach that allows the implementation of an active damping scheme using estimated speed is suggested.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. x, 60 p.
Series
TRITA-EE, ISSN 1653-5146 ; 2013:046
Keyword
Active damping control, electric drive, electric vehicle, hybrid electric vehicle, integrated charger, permanent-magnet assisted synchronous reluctance machine, position estimation, sensorless control
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-139592 (URN)978-91-7501-966-6 (ISBN)
Public defence
2014-01-22, F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20140114

Available from: 2014-01-15 Created: 2014-01-15 Last updated: 2014-01-15Bibliographically approved

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Wallmark, OskarLeksell, Mats

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