High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient Conditions
Photovoltaic energy generation potential can be tapped with maximum efficacy by characterizing the source behaviour. Characterization refers to the systematic terminal measurement-based PV modeling which can further facilitate output prediction and fault detection. Most of the existing PV characteri...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-08-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/17/5296 |
| _version_ | 1797521450295361536 |
|---|---|
| author | Pallavi Bharadwaj Vinod John |
| author_facet | Pallavi Bharadwaj Vinod John |
| author_sort | Pallavi Bharadwaj |
| collection | DOAJ |
| description | Photovoltaic energy generation potential can be tapped with maximum efficacy by characterizing the source behaviour. Characterization refers to the systematic terminal measurement-based PV modeling which can further facilitate output prediction and fault detection. Most of the existing PV characterization methods fail for high-power PV array due to increased thermal losses in electronic components. Here, we propose a switched-mode power converter-based PV characterization setup which is designed with input filter to limit switching ripple entering into PV array under test, thereby enhancing system life and efficiency. The high resonant frequency input filter ensures its compactness with high-speed characterization capability. To further enhance the system performance, a closed-loop current control of the system is designed for high bandwidth and stable phase margins. Variation of the controller parameters under varying ambient conditions of 200–1000 W/m<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula> irradiation and 25–70 °C temperature is documented and an adaptive PI controller is proposed. Experimental and simulation results validate the high performance of the closed loop operation of the PV characterization at 1.2 kW range power level in real-time field conditions. Compared to the open loop operation, the closed-loop operation eliminates the waveform ringing by 100% during characterization. |
| first_indexed | 2024-03-10T08:12:46Z |
| format | Article |
| id | doaj.art-88405b3503344db5bf25ee2d6727487d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T08:12:46Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-88405b3503344db5bf25ee2d6727487d2023-11-22T10:32:34ZengMDPI AGEnergies1996-10732021-08-011417529610.3390/en14175296High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient ConditionsPallavi Bharadwaj0Vinod John1Laboratory for Information and Decision Systems, Massachusetts Institute of Technology, Cambridge, MA 02139, USADepartment of Electrical Engineering, Indian Institute of Science, Bengaluru 560012, IndiaPhotovoltaic energy generation potential can be tapped with maximum efficacy by characterizing the source behaviour. Characterization refers to the systematic terminal measurement-based PV modeling which can further facilitate output prediction and fault detection. Most of the existing PV characterization methods fail for high-power PV array due to increased thermal losses in electronic components. Here, we propose a switched-mode power converter-based PV characterization setup which is designed with input filter to limit switching ripple entering into PV array under test, thereby enhancing system life and efficiency. The high resonant frequency input filter ensures its compactness with high-speed characterization capability. To further enhance the system performance, a closed-loop current control of the system is designed for high bandwidth and stable phase margins. Variation of the controller parameters under varying ambient conditions of 200–1000 W/m<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula> irradiation and 25–70 °C temperature is documented and an adaptive PI controller is proposed. Experimental and simulation results validate the high performance of the closed loop operation of the PV characterization at 1.2 kW range power level in real-time field conditions. Compared to the open loop operation, the closed-loop operation eliminates the waveform ringing by 100% during characterization.https://www.mdpi.com/1996-1073/14/17/5296photovoltaic energy conversionelectric output characterizationswitched mode power converterhigh-frequency input filterclosed loop operation |
| spellingShingle | Pallavi Bharadwaj Vinod John High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient Conditions Energies photovoltaic energy conversion electric output characterization switched mode power converter high-frequency input filter closed loop operation |
| title | High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient Conditions |
| title_full | High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient Conditions |
| title_fullStr | High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient Conditions |
| title_full_unstemmed | High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient Conditions |
| title_short | High-Power Closed-Loop SMPC-Based Photovoltaic System Characterization under Varying Ambient Conditions |
| title_sort | high power closed loop smpc based photovoltaic system characterization under varying ambient conditions |
| topic | photovoltaic energy conversion electric output characterization switched mode power converter high-frequency input filter closed loop operation |
| url | https://www.mdpi.com/1996-1073/14/17/5296 |
| work_keys_str_mv | AT pallavibharadwaj highpowerclosedloopsmpcbasedphotovoltaicsystemcharacterizationundervaryingambientconditions AT vinodjohn highpowerclosedloopsmpcbasedphotovoltaicsystemcharacterizationundervaryingambientconditions |