Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge Path
The intrinsic boost capability of the current source inverter (CSI) increase the power density of the machine and this is of interest in aerospace and electric vehicles (EVs) applications. With the classical power converter, the machine can work only in a limited range above a base speed. In this sc...
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IEEE
2025-01-01
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| Online Access: | https://ieeexplore.ieee.org/document/11079550/ |
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| author | Dario Benatti Giovanni Migliazza Emilio Carfagna Fabio Immovilli Emilio Lorenzani |
| author_facet | Dario Benatti Giovanni Migliazza Emilio Carfagna Fabio Immovilli Emilio Lorenzani |
| author_sort | Dario Benatti |
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| description | The intrinsic boost capability of the current source inverter (CSI) increase the power density of the machine and this is of interest in aerospace and electric vehicles (EVs) applications. With the classical power converter, the machine can work only in a limited range above a base speed. In this scenario the alignment of the rotor is forbidden due to the uncontrolled increase of the DC current. A recently proposed single-stage CSI with discharge path allows to achieve the whole speed range extending the operating region of the converter down to zero speed. In this way it is possible to align the rotor during the power-up phase in a controlled way avoiding unwanted behaviors of the DC current. Unlike voltage source inverter (VSI) architectures that have a constant DC voltage, with single-stage CSI the DC current depends on the working condition and is not constant. For this reason, it is not possible to use the common alignment on the a-axis of the stationary reference frame because the active vectors exhibit different mean values due to the variations of the DC current. An alignment procedure for electric drives that employ an incremental encoder for position sensing is designed for this power converter, using a rotor position alignment on one of the active vectors with a predefined startup procedure without the use of any signal injection. Simulations and experimental results show the effectiveness of the proposed solution. |
| format | Article |
| id | doaj-art-8d447225dfc142cc89aa855f736669db |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-8d447225dfc142cc89aa855f736669db2025-08-20T03:31:48ZengIEEEIEEE Access2169-35362025-01-011312579612580410.1109/ACCESS.2025.358869411079550Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge PathDario Benatti0https://orcid.org/0009-0004-0501-2083Giovanni Migliazza1https://orcid.org/0000-0002-9585-7837Emilio Carfagna2https://orcid.org/0000-0002-5396-3076Fabio Immovilli3https://orcid.org/0000-0001-9347-9329Emilio Lorenzani4https://orcid.org/0000-0002-5916-5817Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia, ItalyDepartment of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia, ItalyDepartment of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia, ItalyDepartment of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia, ItalyDepartment of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia, ItalyThe intrinsic boost capability of the current source inverter (CSI) increase the power density of the machine and this is of interest in aerospace and electric vehicles (EVs) applications. With the classical power converter, the machine can work only in a limited range above a base speed. In this scenario the alignment of the rotor is forbidden due to the uncontrolled increase of the DC current. A recently proposed single-stage CSI with discharge path allows to achieve the whole speed range extending the operating region of the converter down to zero speed. In this way it is possible to align the rotor during the power-up phase in a controlled way avoiding unwanted behaviors of the DC current. Unlike voltage source inverter (VSI) architectures that have a constant DC voltage, with single-stage CSI the DC current depends on the working condition and is not constant. For this reason, it is not possible to use the common alignment on the a-axis of the stationary reference frame because the active vectors exhibit different mean values due to the variations of the DC current. An alignment procedure for electric drives that employ an incremental encoder for position sensing is designed for this power converter, using a rotor position alignment on one of the active vectors with a predefined startup procedure without the use of any signal injection. Simulations and experimental results show the effectiveness of the proposed solution.https://ieeexplore.ieee.org/document/11079550/Current source invertermore electric aircraftrotor positionalignment procedure |
| spellingShingle | Dario Benatti Giovanni Migliazza Emilio Carfagna Fabio Immovilli Emilio Lorenzani Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge Path IEEE Access Current source inverter more electric aircraft rotor position alignment procedure |
| title | Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge Path |
| title_full | Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge Path |
| title_fullStr | Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge Path |
| title_full_unstemmed | Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge Path |
| title_short | Critical Issues of Alignment Procedures for a Novel Single-Stage Current Source Inverter With Discharge Path |
| title_sort | critical issues of alignment procedures for a novel single stage current source inverter with discharge path |
| topic | Current source inverter more electric aircraft rotor position alignment procedure |
| url | https://ieeexplore.ieee.org/document/11079550/ |
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