Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary Source
This paper presents line-interactive transformerless Uninterruptible Power Supply (UPS) with a fuel cell as the prime energy source. The proposed UPS consists of three major parts (i.e., an output inverter, a unidirectional DC–DC converter, and a battery charger/discharger). Non-isolated topologies...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-03-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1996-1073/11/3/542 |
| _version_ | 1798024183024713728 |
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| author | Muhammad Iftikhar Muhammad Aamir Asad Waqar Naila Fahad Bin Muslim Imtiaz Alam |
| author_facet | Muhammad Iftikhar Muhammad Aamir Asad Waqar Naila Fahad Bin Muslim Imtiaz Alam |
| author_sort | Muhammad Iftikhar |
| collection | DOAJ |
| description | This paper presents line-interactive transformerless Uninterruptible Power Supply (UPS) with a fuel cell as the prime energy source. The proposed UPS consists of three major parts (i.e., an output inverter, a unidirectional DC–DC converter, and a battery charger/discharger). Non-isolated topologies of both the unidirectional converter and battery charger/discharger ensure transformerless operation of the UPS system. A new topology of high gain converter is employed for boosting the low voltage of the fuel cell to a higher DC link voltage, with minimum semiconductor count, and high efficiency. A high-gain battery charger/discharger realizes the bidirectional operation between the DC link and the battery bank. Besides, it regulates the DC link voltage during the cold start of fuel cells and keeps the battery bank voltage to only 24 V. A new inverter control scheme is introduced that regulates the output voltage and minimizes the total harmonic distortion for non-linear loading condition. The proposed control scheme integrates proportional-resonant control with slide mode control, which improves the controller’s performance in transient conditions. The proposed UPS system is validated by developing a 1-kVA experimental prototype. |
| first_indexed | 2024-04-11T17:59:29Z |
| format | Article |
| id | doaj.art-28b74fb4e3f9493b9ef5bfc3c19331c7 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T17:59:29Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-28b74fb4e3f9493b9ef5bfc3c19331c72022-12-22T04:10:34ZengMDPI AGEnergies1996-10732018-03-0111354210.3390/en11030542en11030542Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary SourceMuhammad Iftikhar0Muhammad Aamir1Asad Waqar2Naila3Fahad Bin Muslim4Imtiaz Alam5Department of Electrical Engineering, University of Engineering and Technology, 25000 Peshawar, PakistanDepartment of Electrical Engineering, Bahria University, 44000 Islamabad, PakistanDepartment of Electrical Engineering, Bahria University, 44000 Islamabad, PakistanDepartment of Electrical Engineering, Bahria University, 44000 Islamabad, PakistanDepartment of Electrical Engineering, Iqra University, 44000 Islamabad, PakistanDepartment of Electrical Engineering, Bahria University, 44000 Islamabad, PakistanThis paper presents line-interactive transformerless Uninterruptible Power Supply (UPS) with a fuel cell as the prime energy source. The proposed UPS consists of three major parts (i.e., an output inverter, a unidirectional DC–DC converter, and a battery charger/discharger). Non-isolated topologies of both the unidirectional converter and battery charger/discharger ensure transformerless operation of the UPS system. A new topology of high gain converter is employed for boosting the low voltage of the fuel cell to a higher DC link voltage, with minimum semiconductor count, and high efficiency. A high-gain battery charger/discharger realizes the bidirectional operation between the DC link and the battery bank. Besides, it regulates the DC link voltage during the cold start of fuel cells and keeps the battery bank voltage to only 24 V. A new inverter control scheme is introduced that regulates the output voltage and minimizes the total harmonic distortion for non-linear loading condition. The proposed control scheme integrates proportional-resonant control with slide mode control, which improves the controller’s performance in transient conditions. The proposed UPS system is validated by developing a 1-kVA experimental prototype.http://www.mdpi.com/1996-1073/11/3/542fuel cellline-interactiveuninterruptible power supplytransformerlessDC–DC converter |
| spellingShingle | Muhammad Iftikhar Muhammad Aamir Asad Waqar Naila Fahad Bin Muslim Imtiaz Alam Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary Source Energies fuel cell line-interactive uninterruptible power supply transformerless DC–DC converter |
| title | Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary Source |
| title_full | Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary Source |
| title_fullStr | Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary Source |
| title_full_unstemmed | Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary Source |
| title_short | Line-Interactive Transformerless Uninterruptible Power Supply (UPS) with a Fuel Cell as the Primary Source |
| title_sort | line interactive transformerless uninterruptible power supply ups with a fuel cell as the primary source |
| topic | fuel cell line-interactive uninterruptible power supply transformerless DC–DC converter |
| url | http://www.mdpi.com/1996-1073/11/3/542 |
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