Abstract
Wound rotor synchronous motors are being increasingly considered for electric vehicle traction applications. In this regard, the rotary transformer-based field excitation system is considered one of the most viable option for the rotor winding excitation. For such applications, key performance indicators for the rotary transformer-based field excitation system include: maximum speed, power transfer capability, size and weight, manufacturing cost and ease of control. These indicators on the other hand are affected by design choices such as mechanical and magnetic air-gap lengths, use of ferrites in the rotor of the rotary transformer and reactive power compensation. This paper evaluates the performance of the field excitation system based on two different designs of the rotary transformer: a conventional design and a proposed design. Particularly, the effect of various compensation types on the power transfer capability of the two design types is evaluated. It is shown that unlike the conventional design, the proposed design can take advantage of resonant compensation circuits both to enhance its power transfer capability and to ease the control. Taking the same space constraints, winding window areas, and number of turns for the two types of design, the condition necessary for compensation to enhance the performance of the field excitation system is established.
| Original language | English |
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| Title of host publication | 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 1166-1173 |
| Number of pages | 8 |
| ISBN (Electronic) | 9781728103952 |
| DOIs | |
| State | Published - Sep 2019 |
| Event | 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States Duration: Sep 29 2019 → Oct 3 2019 |
Publication series
| Name | 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 |
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Conference
| Conference | 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 |
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| Country/Territory | United States |
| City | Baltimore |
| Period | 09/29/19 → 10/3/19 |
Funding
This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher by accepting the article for publication, acknowledge that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results for federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan) Corresponding author: Tsarafidy Raminosoa ([email protected]) ACKNOWLEDGMENT This material is based upon work supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office under contract number DE-AC05-00OR22725. The authors thank the U.S. Department of Energy’s Susan Rogers, and Oak Ridge National Laboratory’s Dr. Burak Ozpineci for their financial and managerial support.
Keywords
- Circuit-based model
- Resonant compensation circuits
- Rotary transformer
- Wound field synchronous machine