Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices
This paper describes the power stage design, control, and performance evaluation of a 13.2 kV/10 kVA solid-state-transformer (SST) for a power distribution system. The proposed SST consists of 10 modules where each individual module contains a unidirectional three-level power factor correction (PFC)...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-01-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/1/201 |
| _version_ | 1811306180383866880 |
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| author | Jeong-Woo Lim Younghoon Cho Han-Sol Lee Kwan-Yuhl Cho |
| author_facet | Jeong-Woo Lim Younghoon Cho Han-Sol Lee Kwan-Yuhl Cho |
| author_sort | Jeong-Woo Lim |
| collection | DOAJ |
| description | This paper describes the power stage design, control, and performance evaluation of a 13.2 kV/10 kVA solid-state-transformer (SST) for a power distribution system. The proposed SST consists of 10 modules where each individual module contains a unidirectional three-level power factor correction (PFC) converter for the active-front-end (AFE) stage and an LLC resonant converter for the isolated DC-DC stage. The operating principles of the converters are analyzed and the modulation and the control schemes for the entire module are described in detail. The DC-link voltage imbalance is also less than other SST topologies due to the low number of uncontrollable switching states. In order to simplify the control of the power stage, a modulation strategy for the AFE stage is proposed, and the modulation frequency of the LLC converter is also fixed. In addition, a compensation algorithm is suggested to eliminate the current measurement offset in the AFE stage. The proposed SST achieves the unity power factor at the input AC current regardless of the reactive or nonlinear load and a low voltage regulation at the AC output. In order to verify the effectiveness of the SST, the 13.2 kV/10 kV SST prototype is built and tested. Both the simulation and the experimental results under actual 13.2 kV line show the excellent performance of the proposed SST scheme. |
| first_indexed | 2024-04-13T08:39:44Z |
| format | Article |
| id | doaj.art-34416310aa0a4b83b2aa8737dee21d21 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T08:39:44Z |
| publishDate | 2018-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-34416310aa0a4b83b2aa8737dee21d212022-12-22T02:53:55ZengMDPI AGEnergies1996-10732018-01-0111120110.3390/en11010201en11010201Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC DevicesJeong-Woo Lim0Younghoon Cho1Han-Sol Lee2Kwan-Yuhl Cho3Department of Electrical Engineering, Konkuk University, Seoul 05029, KoreaDepartment of Electrical Engineering, Konkuk University, Seoul 05029, KoreaDepartment of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, KoreaDepartment of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, KoreaThis paper describes the power stage design, control, and performance evaluation of a 13.2 kV/10 kVA solid-state-transformer (SST) for a power distribution system. The proposed SST consists of 10 modules where each individual module contains a unidirectional three-level power factor correction (PFC) converter for the active-front-end (AFE) stage and an LLC resonant converter for the isolated DC-DC stage. The operating principles of the converters are analyzed and the modulation and the control schemes for the entire module are described in detail. The DC-link voltage imbalance is also less than other SST topologies due to the low number of uncontrollable switching states. In order to simplify the control of the power stage, a modulation strategy for the AFE stage is proposed, and the modulation frequency of the LLC converter is also fixed. In addition, a compensation algorithm is suggested to eliminate the current measurement offset in the AFE stage. The proposed SST achieves the unity power factor at the input AC current regardless of the reactive or nonlinear load and a low voltage regulation at the AC output. In order to verify the effectiveness of the SST, the 13.2 kV/10 kV SST prototype is built and tested. Both the simulation and the experimental results under actual 13.2 kV line show the excellent performance of the proposed SST scheme.http://www.mdpi.com/1996-1073/11/1/201solid-state-transformer (SST)three-level power factor correction (PFC) converterLLC convertermulti-level converter |
| spellingShingle | Jeong-Woo Lim Younghoon Cho Han-Sol Lee Kwan-Yuhl Cho Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices Energies solid-state-transformer (SST) three-level power factor correction (PFC) converter LLC converter multi-level converter |
| title | Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices |
| title_full | Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices |
| title_fullStr | Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices |
| title_full_unstemmed | Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices |
| title_short | Design and Control of a 13.2 kV/10 kVA Single-Phase Solid-State-Transformer with 1.7 kV SiC Devices |
| title_sort | design and control of a 13 2 kv 10 kva single phase solid state transformer with 1 7 kv sic devices |
| topic | solid-state-transformer (SST) three-level power factor correction (PFC) converter LLC converter multi-level converter |
| url | http://www.mdpi.com/1996-1073/11/1/201 |
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