A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters
Abstract This study proposes an estimation method of flux density in high‐frequency transformers of three‐phase dual‐active‐bridge transformers. The steady‐state analysis shows that the flux in the converter is different in Buck and Boost modes and depending on load and voltage gain condition. From...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-05-01
|
| Series: | IET Power Electronics |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/pel2.12091 |
| _version_ | 1797989821743890432 |
|---|---|
| author | Duy‐Dinh Nguyen Takuya Goto Kazuto Yukita Akinori Katou Shinji Yoshida |
| author_facet | Duy‐Dinh Nguyen Takuya Goto Kazuto Yukita Akinori Katou Shinji Yoshida |
| author_sort | Duy‐Dinh Nguyen |
| collection | DOAJ |
| description | Abstract This study proposes an estimation method of flux density in high‐frequency transformers of three‐phase dual‐active‐bridge transformers. The steady‐state analysis shows that the flux in the converter is different in Buck and Boost modes and depending on load and voltage gain condition. From that, a closed‐form formula is proposed to estimate the flux swing in the core. Unlike the conventional estimation technique, the proposed one represents the flux as a function of input and output voltages and the phase shift value. Finite element analysis confirms that the proposed formula can predict the flux with less than 4% error. The proposed formula can also help to improve the prediction of temperature profile of the transformers with a high accuracy of less than 1 degree Celsius in the mid‐ to high‐power range as validated in experiments. The proposed flux estimation method can be used in designing the converter or in predicting the converter behaviour under critical conditions such as load changing or starting, and so forth, to help protect the transformers from saturation or DC bias. |
| first_indexed | 2024-04-11T08:26:37Z |
| format | Article |
| id | doaj.art-4b1ec7aa5d0340fcbaf9be7bcc790b5a |
| institution | Directory Open Access Journal |
| issn | 1755-4535 1755-4543 |
| language | English |
| last_indexed | 2024-04-11T08:26:37Z |
| publishDate | 2021-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Power Electronics |
| spelling | doaj.art-4b1ec7aa5d0340fcbaf9be7bcc790b5a2022-12-22T04:34:44ZengWileyIET Power Electronics1755-45351755-45432021-05-011461102111010.1049/pel2.12091A flux estimation method for three‐phase dual‐active‐bridge DC/DC convertersDuy‐Dinh Nguyen0Takuya Goto1Kazuto Yukita2Akinori Katou3Shinji Yoshida4Eco‐electric Power Research Center Aichi Institute of Technology Toyota Aichi JapanEco‐electric Power Research Center Aichi Institute of Technology Toyota Aichi JapanEco‐electric Power Research Center Aichi Institute of Technology Toyota Aichi JapanKawamura Electric Inc. Seto Aichi JapanKawamura Electric Inc. Seto Aichi JapanAbstract This study proposes an estimation method of flux density in high‐frequency transformers of three‐phase dual‐active‐bridge transformers. The steady‐state analysis shows that the flux in the converter is different in Buck and Boost modes and depending on load and voltage gain condition. From that, a closed‐form formula is proposed to estimate the flux swing in the core. Unlike the conventional estimation technique, the proposed one represents the flux as a function of input and output voltages and the phase shift value. Finite element analysis confirms that the proposed formula can predict the flux with less than 4% error. The proposed formula can also help to improve the prediction of temperature profile of the transformers with a high accuracy of less than 1 degree Celsius in the mid‐ to high‐power range as validated in experiments. The proposed flux estimation method can be used in designing the converter or in predicting the converter behaviour under critical conditions such as load changing or starting, and so forth, to help protect the transformers from saturation or DC bias.https://doi.org/10.1049/pel2.12091Power electronics, supply and supervisory circuitsControl of electric power systemsDC‐DC power convertorsPower convertors and power supplies to apparatus |
| spellingShingle | Duy‐Dinh Nguyen Takuya Goto Kazuto Yukita Akinori Katou Shinji Yoshida A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters IET Power Electronics Power electronics, supply and supervisory circuits Control of electric power systems DC‐DC power convertors Power convertors and power supplies to apparatus |
| title | A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters |
| title_full | A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters |
| title_fullStr | A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters |
| title_full_unstemmed | A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters |
| title_short | A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters |
| title_sort | flux estimation method for three phase dual active bridge dc dc converters |
| topic | Power electronics, supply and supervisory circuits Control of electric power systems DC‐DC power convertors Power convertors and power supplies to apparatus |
| url | https://doi.org/10.1049/pel2.12091 |
| work_keys_str_mv | AT duydinhnguyen afluxestimationmethodforthreephasedualactivebridgedcdcconverters AT takuyagoto afluxestimationmethodforthreephasedualactivebridgedcdcconverters AT kazutoyukita afluxestimationmethodforthreephasedualactivebridgedcdcconverters AT akinorikatou afluxestimationmethodforthreephasedualactivebridgedcdcconverters AT shinjiyoshida afluxestimationmethodforthreephasedualactivebridgedcdcconverters AT duydinhnguyen fluxestimationmethodforthreephasedualactivebridgedcdcconverters AT takuyagoto fluxestimationmethodforthreephasedualactivebridgedcdcconverters AT kazutoyukita fluxestimationmethodforthreephasedualactivebridgedcdcconverters AT akinorikatou fluxestimationmethodforthreephasedualactivebridgedcdcconverters AT shinjiyoshida fluxestimationmethodforthreephasedualactivebridgedcdcconverters |