Abstract
In this paper, a comparative study of the dead-time effects in a wireless power transfer (WPT) system inverter is performed for different fixed-frequency control techniques. The dead-time is provided between the complementary switching instances of the inverter phase-legs to ensure safe operation of the input power source. Under certain operating conditions, the dead-time results in waveform distortions or voltage-polarity reversal (VPR) at the inverter output. The VPR affects the switching characteristics, harmonic spectrum, switching losses, and output voltage/power of the system. A detailed analysis of the dead-time effect on the WPT system parameters such as output voltage and output power is conducted for the different fixed-frequency control strategies (i.e., traditional phase-shift control, asymmetrical clamped-mode, and asymmetrical duty-cycle control). Furthermore, the impact of dead-time on the inverter switching losses is compared for the different control strategies.
| Original language | English |
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| Title of host publication | 2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 277-283 |
| Number of pages | 7 |
| ISBN (Electronic) | 9781728146294 |
| DOIs | |
| State | Published - Jun 2020 |
| Event | 2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020 - Chicago, United States Duration: Jun 23 2020 → Jun 26 2020 |
Publication series
| Name | 2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020 |
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Conference
| Conference | 2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020 |
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| Country/Territory | United States |
| City | Chicago |
| Period | 06/23/20 → 06/26/20 |
Funding
This study is based on work supported by the US Department of Energy (DOE) Vehicle Technologies Office (VTO). The authors would like to thank Mr. Lee Slezak of DOEVTO, Mr. Jason Conley of the National Energy Technology Laboratory, and Dr. David Smith of Oak Ridge National Laboratory for their support and guidance. This study is based on work supported by the US Department of Energy (DOE) Vehicle Technologies Office (VTO). The authors would like to thank Mr. Lee Slezak of DOE-VTO, Mr. Jason Conley of the National Energy Technology Laboratory, and Dr. David Smith of Oak Ridge National Laboratory for their support and guidance. This manuscript has been authored by Oak Ridge National Laboratory, operated by UT-Battelle LLC under contract No. DE-AC05-00OR22725 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
Keywords
- Wireless power transfer
- dead-time
- notch
- resonant inverter
- voltage polarity reversal