Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage Protection
In Photovoltaic (PV) systems with Distributed Maximum Power Point Tracking (DMPPT) architecture each panel is connected to a DC/DC converter, whose outputs are connected in series to feed a grid-connected inverter. The series-connection forces the output voltage of those converters to be proportiona...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-08-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/9/2220 |
| _version_ | 1811305679051292672 |
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| author | Carlos Andres Ramos-Paja Daniel Gonzalez Montoya Juan David Bastidas-Rodriguez |
| author_facet | Carlos Andres Ramos-Paja Daniel Gonzalez Montoya Juan David Bastidas-Rodriguez |
| author_sort | Carlos Andres Ramos-Paja |
| collection | DOAJ |
| description | In Photovoltaic (PV) systems with Distributed Maximum Power Point Tracking (DMPPT) architecture each panel is connected to a DC/DC converter, whose outputs are connected in series to feed a grid-connected inverter. The series-connection forces the output voltage of those converters to be proportional to the converter’ output power; therefore, under mismatched conditions, the output voltage of a highly-irradiated converter may exceed the rating (safe) value, causing an overvoltage condition that could damage the converter. This paper proposes a sliding-mode controller (SMC) acting on each converter to regulate both the input and output voltages, hence avoiding the overvoltage condition under partial shading. The proposed control strategy has two operation modes: maximum power point tracking (MPPT) and Protection. In MPPT mode the SMC imposes to the PV panel the voltage reference defined by an MPPT technique. The Protection mode is activated when the output voltage reaches the safety limit, and the SMC regulates the converter’ output voltage to avoid overvoltage condition. The SMC has a bilinear sliding surface designed to provide a soft transition between both MPPT and Protection modes. The SMC analysis, parameters design and implementation are presented in detail. Moreover, simulation and experimental results illustrate the performance and applicability of the proposed solution. |
| first_indexed | 2024-04-13T08:30:47Z |
| format | Article |
| id | doaj.art-08065db20d374279961508bf428f56e1 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T08:30:47Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-08065db20d374279961508bf428f56e12022-12-22T02:54:15ZengMDPI AGEnergies1996-10732018-08-01119222010.3390/en11092220en11092220Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage ProtectionCarlos Andres Ramos-Paja0Daniel Gonzalez Montoya1Juan David Bastidas-Rodriguez2Departamento de Energia Eléctrica y Automática, Universidad Nacional de Colombia, Carrera 80 No 65-223—Facultad de Minas, Medellín 050041, ColombiaDepartamento de Electrónica y Telecomunicaciones, Instituto Tecnológico Metropolitano, Carrera 31 No 54-10, Medellín 050013, ColombiaEscuela de Ingenierías, Eléctrica, Electrónica y de Telecomunicaciones, Universidad Industrial de Santander, Bucaramanga 68002, ColombiaIn Photovoltaic (PV) systems with Distributed Maximum Power Point Tracking (DMPPT) architecture each panel is connected to a DC/DC converter, whose outputs are connected in series to feed a grid-connected inverter. The series-connection forces the output voltage of those converters to be proportional to the converter’ output power; therefore, under mismatched conditions, the output voltage of a highly-irradiated converter may exceed the rating (safe) value, causing an overvoltage condition that could damage the converter. This paper proposes a sliding-mode controller (SMC) acting on each converter to regulate both the input and output voltages, hence avoiding the overvoltage condition under partial shading. The proposed control strategy has two operation modes: maximum power point tracking (MPPT) and Protection. In MPPT mode the SMC imposes to the PV panel the voltage reference defined by an MPPT technique. The Protection mode is activated when the output voltage reaches the safety limit, and the SMC regulates the converter’ output voltage to avoid overvoltage condition. The SMC has a bilinear sliding surface designed to provide a soft transition between both MPPT and Protection modes. The SMC analysis, parameters design and implementation are presented in detail. Moreover, simulation and experimental results illustrate the performance and applicability of the proposed solution.http://www.mdpi.com/1996-1073/11/9/2220distributed architecturemaximum power point trackingsliding mode controlovervoltage |
| spellingShingle | Carlos Andres Ramos-Paja Daniel Gonzalez Montoya Juan David Bastidas-Rodriguez Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage Protection Energies distributed architecture maximum power point tracking sliding mode control overvoltage |
| title | Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage Protection |
| title_full | Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage Protection |
| title_fullStr | Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage Protection |
| title_full_unstemmed | Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage Protection |
| title_short | Sliding-Mode Control of Distributed Maximum Power Point Tracking Converters Featuring Overvoltage Protection |
| title_sort | sliding mode control of distributed maximum power point tracking converters featuring overvoltage protection |
| topic | distributed architecture maximum power point tracking sliding mode control overvoltage |
| url | http://www.mdpi.com/1996-1073/11/9/2220 |
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