EPE Association: EPE 2007 - Subtopic 13-4

EPE 2007 - Subtopic 13-4 - LS: Photovoltaics I
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 13: 'Electrical energy generating systems, renewable energy systems' > EPE 2007 - Subtopic 13-4 - LS: Photovoltaics I

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   A Current-Mode Controlled Maximum Power Point Tracking Converter for Building Integrated Photovoltaics
By TAN Chee Wei; HERNANDEZ-ARAMBURO Carlos A.; GREEN Tim C. [View]
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Abstract: This paper presents a current-mode controlled maximum power point tracking (MPPT) converter and BIPV design considerations covering the photovoltaic orientation and tilt angle. An MPPT algorithm featuring rapid convergence and steady-state accuracy is described. The power tracking performance of the proposed MPPT converter has been experimentally verified. The experimental test rig consists of a 65 W multi-crystalline PV panel with controllable illumination to emulate the changes of solar irradiance. The test rig is fitted with a FPGA-DSP controlled rapid prototyping platform for power conditioning. The current-mode control method provides better transient performance than directly perturb the duty-cycle of the converter. A step-size varies in response to the former approach and previous error ensures rapid accurate tracking following shadow effects of clouds or obstructions. The experimental results show that the proposed MPPT converter is capable of reaching the steady-state condition quickly during a transient with negligible oscillations and tracking under dynamic changes of solar irradiance efficiently.

   Development Of A Single-Stage Three-Phase PV Module Integrated Converter
By SAHAN Benjamin; NOTHOLT VERGARA Antonio; ZACHARIAS Peter; ENGLER Alfred [View]
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Abstract: A transformerless three-phase power conditioning unit interfacing with a high voltage (>200V) photovoltaic module is presented. The chosen topology, a Current Source Inverter, features a single-stage power conversion system that feeds directly into the grid. A robust and highly efficient laboratory prototype of a Module Integrated Converter has been implemented and demonstrated by experimental results.

   Single-Phase Grid-Connected Photovoltaic Systems With Power Quality Conditioner Functionality
By LISERRE Marco; MASTROMAURO Rosa; DELL'AQUILA Antonio [View]
[Download]

Abstract: Future ancillary services provided by photovoltaic systems could facilitate their penetration in power systems. In fact PV converters can be designed to improve grid power quality implementing power conditioning functionalities. This paper presents a single-phase photovoltaic system with power quality conditioner capability. It provides grid voltage support at fundamental frequency and compensation of current and voltage distortion at the point of common coupling (PCC). Two topologies have been considered: in the first one the voltage and the harmonic compensation are provided by two different converters, in the second one only one converter is used. Both the proposed topologies are controlled with a repetitive controller that is able to compensate the selected harmonics. Simulation results allows comparing the presented solutions.

EPE 2007 - Subtopic 13-4 - LS: Photovoltaics I
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 13: 'Electrical energy generating systems, renewable energy systems' > EPE 2007 - Subtopic 13-4 - LS: Photovoltaics I
	[return to parent folder]

	A Current-Mode Controlled Maximum Power Point Tracking Converter for Building Integrated Photovoltaics By TAN Chee Wei; HERNANDEZ-ARAMBURO Carlos A.; GREEN Tim C.	[View] [Download]
Abstract: This paper presents a current-mode controlled maximum power point tracking (MPPT) converter and BIPV design considerations covering the photovoltaic orientation and tilt angle. An MPPT algorithm featuring rapid convergence and steady-state accuracy is described. The power tracking performance of the proposed MPPT converter has been experimentally verified. The experimental test rig consists of a 65 W multi-crystalline PV panel with controllable illumination to emulate the changes of solar irradiance. The test rig is fitted with a FPGA-DSP controlled rapid prototyping platform for power conditioning. The current-mode control method provides better transient performance than directly perturb the duty-cycle of the converter. A step-size varies in response to the former approach and previous error ensures rapid accurate tracking following shadow effects of clouds or obstructions. The experimental results show that the proposed MPPT converter is capable of reaching the steady-state condition quickly during a transient with negligible oscillations and tracking under dynamic changes of solar irradiance efficiently.

	Development Of A Single-Stage Three-Phase PV Module Integrated Converter By SAHAN Benjamin; NOTHOLT VERGARA Antonio; ZACHARIAS Peter; ENGLER Alfred	[View] [Download]
Abstract: A transformerless three-phase power conditioning unit interfacing with a high voltage (>200V) photovoltaic module is presented. The chosen topology, a Current Source Inverter, features a single-stage power conversion system that feeds directly into the grid. A robust and highly efficient laboratory prototype of a Module Integrated Converter has been implemented and demonstrated by experimental results.

	Single-Phase Grid-Connected Photovoltaic Systems With Power Quality Conditioner Functionality By LISERRE Marco; MASTROMAURO Rosa; DELL'AQUILA Antonio	[View] [Download]
Abstract: Future ancillary services provided by photovoltaic systems could facilitate their penetration in power systems. In fact PV converters can be designed to improve grid power quality implementing power conditioning functionalities. This paper presents a single-phase photovoltaic system with power quality conditioner capability. It provides grid voltage support at fundamental frequency and compensation of current and voltage distortion at the point of common coupling (PCC). Two topologies have been considered: in the first one the voltage and the harmonic compensation are provided by two different converters, in the second one only one converter is used. Both the proposed topologies are controlled with a repetitive controller that is able to compensate the selected harmonics. Simulation results allows comparing the presented solutions.