Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions
The central inverter topology based on three-level converters is widely used in large-scale photovoltaic (PV) power plants because of its simple and reliable structure and high efficiency. However, when two PV arrays are connected in series for higher dc-link voltage, the single maximum power point...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/141681 |
| _version_ | 1826126754301870080 |
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| author | Karanayil, Baburaj Ceballos, Salvador Pou, Josep |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Karanayil, Baburaj Ceballos, Salvador Pou, Josep |
| author_sort | Karanayil, Baburaj |
| collection | NTU |
| description | The central inverter topology based on three-level converters is widely used in large-scale photovoltaic (PV) power plants because of its simple and reliable structure and high efficiency. However, when two PV arrays are connected in series for higher dc-link voltage, the single maximum power point tracking (MPPT) operation cannot function properly when there is partial shading between the arrays. This paper presents a configuration where the two PV arrays are connected in series together with an auxiliary power converter feeding a neutral-point-clamped central inverter. This configuration ensures maximum power production from both PV arrays during partial shading conditions, achieving the MPPT operation for both PV arrays. The proposed converter together with their controls are verified by simulation and experiment. |
| first_indexed | 2024-10-01T06:57:32Z |
| format | Journal Article |
| id | ntu-10356/141681 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:57:32Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1416812020-12-21T01:48:52Z Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions Karanayil, Baburaj Ceballos, Salvador Pou, Josep School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Grid-connected Inverters Maximum Power Point Tracking (MPPT) The central inverter topology based on three-level converters is widely used in large-scale photovoltaic (PV) power plants because of its simple and reliable structure and high efficiency. However, when two PV arrays are connected in series for higher dc-link voltage, the single maximum power point tracking (MPPT) operation cannot function properly when there is partial shading between the arrays. This paper presents a configuration where the two PV arrays are connected in series together with an auxiliary power converter feeding a neutral-point-clamped central inverter. This configuration ensures maximum power production from both PV arrays during partial shading conditions, achieving the MPPT operation for both PV arrays. The proposed converter together with their controls are verified by simulation and experiment. Accepted version This work was supported in part by the Basque Country Government under the project KK-2018/00040 ENSOL. 2020-06-10T02:46:54Z 2020-06-10T02:46:54Z 2018 Journal Article Karanayil, B., Ceballos, S., & Pou, J. (2019). Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions. IEEE Transactions on Power Electronics, 34(4), 3098-3109. doi:10.1109/TPEL.2018.2850374 0885-8993 https://hdl.handle.net/10356/141681 10.1109/TPEL.2018.2850374 2-s2.0-85049094132 4 34 3098 3109 en IEEE Transactions on Power Electronics © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: https://doi.org/10.1109/TPEL.2018.2850374. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Grid-connected Inverters Maximum Power Point Tracking (MPPT) Karanayil, Baburaj Ceballos, Salvador Pou, Josep Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions |
| title | Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions |
| title_full | Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions |
| title_fullStr | Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions |
| title_full_unstemmed | Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions |
| title_short | Maximum power point controller for large-scale photovoltaic power plants using central inverters under partial shading conditions |
| title_sort | maximum power point controller for large scale photovoltaic power plants using central inverters under partial shading conditions |
| topic | Engineering::Electrical and electronic engineering Grid-connected Inverters Maximum Power Point Tracking (MPPT) |
| url | https://hdl.handle.net/10356/141681 |
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