On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting
A reconfigurable switched-capacitor DC-DC converter is presented for indoor photovoltaic energy harvesting. A uniform hysteresis controller regulates the PV cell voltage at 1.5 V to extract the maximum power from the PV cell and regulates the load voltage at 0.9 V. To minimise the conversion loss, t...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/87267 http://hdl.handle.net/10220/44359 |
| _version_ | 1826124755691896832 |
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| author | Xiao, Zhekai Khoa, Bui Anh Siek, Liter |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Xiao, Zhekai Khoa, Bui Anh Siek, Liter |
| author_sort | Xiao, Zhekai |
| collection | NTU |
| description | A reconfigurable switched-capacitor DC-DC converter is presented for indoor photovoltaic energy harvesting. A uniform hysteresis controller regulates the PV cell voltage at 1.5 V to extract the maximum power from the PV cell and regulates the load voltage at 0.9 V. To minimise the conversion loss, the energy is transferred from the PV cell to the load directly whenever energy is available in the PV cell. When the load voltage is high, the excess energy in the PV cell is stored in the buffer of 1.8 V. The load draws energy from the buffer when energy is not available in the PV cell. The proposed converter was fabricated in 0.18 μm CMOS process and achieves peak efficiencies of 87, 88 and 78% while delivering energy from the PV cell to the load, from the PV cell to the buffer and from the buffer to the load, respectively. |
| first_indexed | 2024-10-01T06:25:53Z |
| format | Journal Article |
| id | ntu-10356/87267 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:25:53Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/872672020-03-07T13:57:27Z On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting Xiao, Zhekai Khoa, Bui Anh Siek, Liter School of Electrical and Electronic Engineering Switched-capacitor Energy Harvesting A reconfigurable switched-capacitor DC-DC converter is presented for indoor photovoltaic energy harvesting. A uniform hysteresis controller regulates the PV cell voltage at 1.5 V to extract the maximum power from the PV cell and regulates the load voltage at 0.9 V. To minimise the conversion loss, the energy is transferred from the PV cell to the load directly whenever energy is available in the PV cell. When the load voltage is high, the excess energy in the PV cell is stored in the buffer of 1.8 V. The load draws energy from the buffer when energy is not available in the PV cell. The proposed converter was fabricated in 0.18 μm CMOS process and achieves peak efficiencies of 87, 88 and 78% while delivering energy from the PV cell to the load, from the PV cell to the buffer and from the buffer to the load, respectively. ASTAR (Agency for Sci., Tech. and Research, S’pore) EDB (Economic Devt. Board, S’pore) Accepted version 2018-01-31T03:54:45Z 2019-12-06T16:38:31Z 2018-01-31T03:54:45Z 2019-12-06T16:38:31Z 2017 Journal Article Xiao, Z., Khoa, B. A., & Siek, L. (2017). On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting. Electronics Letters, 53(2), 108-110. 0013-5194 https://hdl.handle.net/10356/87267 http://hdl.handle.net/10220/44359 10.1049/el.2016.3018 en Electronics Letters © 2017 The Institution of Engineering and Technology (IET). This is the author created version of a work that has been peer reviewed and accepted for publication by Electronics Letters, The Institution of Engineering and Technology. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1049/el.2016.3018]. 2 p. application/pdf |
| spellingShingle | Switched-capacitor Energy Harvesting Xiao, Zhekai Khoa, Bui Anh Siek, Liter On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting |
| title | On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting |
| title_full | On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting |
| title_fullStr | On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting |
| title_full_unstemmed | On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting |
| title_short | On-chip reconfigurable switched-capacitor DC–DC converter for indoor PV energy harvesting |
| title_sort | on chip reconfigurable switched capacitor dc dc converter for indoor pv energy harvesting |
| topic | Switched-capacitor Energy Harvesting |
| url | https://hdl.handle.net/10356/87267 http://hdl.handle.net/10220/44359 |
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