Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost Converter
This paper seeks to identify an optimal DC-link voltage across the complete range of drive operating conditions utilizing a loss minimization approach by integrating a DC-DC converter into the powertrain, thereby enhancing powertrain efficiency. This involves a comprehensive analysis of power losses...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10904239/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849709156223680512 |
|---|---|
| author | Sepideh Amirpour Torbjorn Thiringer Sima Soltanipour Yu Xu |
| author_facet | Sepideh Amirpour Torbjorn Thiringer Sima Soltanipour Yu Xu |
| author_sort | Sepideh Amirpour |
| collection | DOAJ |
| description | This paper seeks to identify an optimal DC-link voltage across the complete range of drive operating conditions utilizing a loss minimization approach by integrating a DC-DC converter into the powertrain, thereby enhancing powertrain efficiency. This involves a comprehensive analysis of power losses in a connected silicon carbide (SiC)-based converter-inverter system, incorporating temperature variations, alongside a finite element method (FEM) analysis of losses in an Interior Permanent Magnet (IPM) synchronous machine, accounting for variable DC-link voltages. The results are then compared with those of traditional silicon-insulated-gate bipolar transistor (Si-IGBT) systems. The findings reveal that including a DC-DC converter into a powertrain, and adjusting the optimum DC-link voltages, is advantageous, particularly for low battery terminal voltages. Consequently, the powertrain system, incorporating a DC-DC boost converter, exhibits lower total loss values, with a difference of up to 5 kW loss difference for high-speed, low-torque regions compared to the case when not incorporating the DC-DC converter. Furthermore, applying the proposed optimal DC-link profile in the Worldwide harmonized Light vehicle Test Cycle (WLTC) leads to a reduction of up to 16% in accumulated energy losses in the SiC driveline compared to its IGBT counterpart. In addition, applying the optimal DC-link profile reduces energy losses by 58% in the SiC-based system and by 54% in the IGBT-based system, compared to operating with a fixed 300 V DC-bus voltage. |
| format | Article |
| id | doaj-art-a44c088d3dd1435fbcfd2f8c3382f3d3 |
| institution | DOAJ |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-a44c088d3dd1435fbcfd2f8c3382f3d32025-08-20T03:15:24ZengIEEEIEEE Access2169-35362025-01-0113382393825410.1109/ACCESS.2025.354602510904239Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost ConverterSepideh Amirpour0https://orcid.org/0000-0001-6264-4168Torbjorn Thiringer1https://orcid.org/0000-0001-5777-1242Sima Soltanipour2https://orcid.org/0009-0003-6814-1889Yu Xu3Zeekr Technology Europe, Gothenburg, SwedenElectrical Engineering Department, Chalmers University of Technology, Gothenburg, SwedenElectrical Engineering Department, Chalmers University of Technology, Gothenburg, SwedenZeekr Technology Europe, Gothenburg, SwedenThis paper seeks to identify an optimal DC-link voltage across the complete range of drive operating conditions utilizing a loss minimization approach by integrating a DC-DC converter into the powertrain, thereby enhancing powertrain efficiency. This involves a comprehensive analysis of power losses in a connected silicon carbide (SiC)-based converter-inverter system, incorporating temperature variations, alongside a finite element method (FEM) analysis of losses in an Interior Permanent Magnet (IPM) synchronous machine, accounting for variable DC-link voltages. The results are then compared with those of traditional silicon-insulated-gate bipolar transistor (Si-IGBT) systems. The findings reveal that including a DC-DC converter into a powertrain, and adjusting the optimum DC-link voltages, is advantageous, particularly for low battery terminal voltages. Consequently, the powertrain system, incorporating a DC-DC boost converter, exhibits lower total loss values, with a difference of up to 5 kW loss difference for high-speed, low-torque regions compared to the case when not incorporating the DC-DC converter. Furthermore, applying the proposed optimal DC-link profile in the Worldwide harmonized Light vehicle Test Cycle (WLTC) leads to a reduction of up to 16% in accumulated energy losses in the SiC driveline compared to its IGBT counterpart. In addition, applying the optimal DC-link profile reduces energy losses by 58% in the SiC-based system and by 54% in the IGBT-based system, compared to operating with a fixed 300 V DC-bus voltage.https://ieeexplore.ieee.org/document/10904239/Electric vehiclesSiC-based motor drivesvoltage-source invertersdc-dc boost converterpermanent magnet synchronous machineenergy efficiency |
| spellingShingle | Sepideh Amirpour Torbjorn Thiringer Sima Soltanipour Yu Xu Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost Converter IEEE Access Electric vehicles SiC-based motor drives voltage-source inverters dc-dc boost converter permanent magnet synchronous machine energy efficiency |
| title | Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost Converter |
| title_full | Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost Converter |
| title_fullStr | Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost Converter |
| title_full_unstemmed | Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost Converter |
| title_short | Optimal DC-Link Voltage Mapping for SiC-Based EV Drives: Considering the Impact of a Synchronous Boost Converter |
| title_sort | optimal dc link voltage mapping for sic based ev drives considering the impact of a synchronous boost converter |
| topic | Electric vehicles SiC-based motor drives voltage-source inverters dc-dc boost converter permanent magnet synchronous machine energy efficiency |
| url | https://ieeexplore.ieee.org/document/10904239/ |
| work_keys_str_mv | AT sepidehamirpour optimaldclinkvoltagemappingforsicbasedevdrivesconsideringtheimpactofasynchronousboostconverter AT torbjornthiringer optimaldclinkvoltagemappingforsicbasedevdrivesconsideringtheimpactofasynchronousboostconverter AT simasoltanipour optimaldclinkvoltagemappingforsicbasedevdrivesconsideringtheimpactofasynchronousboostconverter AT yuxu optimaldclinkvoltagemappingforsicbasedevdrivesconsideringtheimpactofasynchronousboostconverter |