EPE Association: EPE 2020 - LS3e: Photovoltaics

EPE 2020 - LS3e: Photovoltaics
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 05: Renewable Energy Power Systems > EPE 2020 - LS3e: Photovoltaics

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   Control of a two-stage, single-phase grid-tied, GaN based solar micro-inverter
By Anthonty BIER [View]
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Abstract: This work presents the modelling and the implementation of the control of a single-phase grid-tied GaN micro-inverter dedicated to photovoltaic applications. First, the power hardware based wide-band-gap components is shown, and then, switches pulses control blocks and control loops of this specific grid-tied inverter are described.

   Effects of PV Panel and Battery Degradation on PV-Battery System Performance and Economic Profitability
By Monika SANDELIC [View]
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Abstract: The performance of the photovoltaics (PV) systems with integrated battery energy storage is influenced by key-components degradation over time. In long-term operation, this aspect can affect the overall economic profitability of the system. In this paper, the impacts of the degradation and the lifetime of the key components of the PV-battery system on economic profitability are investigated. The influences of PV panel and battery degradation on the electrical loading and lifetime of the power converters are also demonstrated. A case study reveals that the economic profitability reduces more than 35\% due to the degradation over time in service. It is concluded that the performance degradation needs to be carefully considered when analysing the economic profitability of the PV-battery systems.

   Extended Boost PV inverter topology for the reduction of common-mode leakage current in three-phase applications
By Georgios ORFANOUDAKIS [View]
[Download]

Abstract: Photovoltaic (PV) inverters must not generate high levels of common-mode (CM) ground leakage currents, which may flow due to fast variations in their CM voltage. Moreover, a highly desirable feature for PV inverters is their voltage step-up capability, which enables operation with lower DC input voltage levels, thus extending energy harvesting over wider solar irradiance and temperature ranges. This paper presents a new three-phase Boost PV inverter topology and its modulation strategy, designed based on a new concept for suppressing CM leakage currents in three-phase PV inverters. In contrast to past-proposed three-phase step-up topologies, the proposed PV inverter uses a modified Boost converter instead of a transformerless inverter, as well as a modulation strategy generating high-quality PWM voltage. Due to their combined characteristics, the variation of the CM voltage generated by the proposed PV inverter is minimized, which radically improves its CM current suppressing capability. The structure and operating principle of the proposed topology are presented, and its effectiveness with respect to CM current suppression is demonstrated through simulation results in MATLAB/Simulink.

   Modeling and fault detection in photovoltaic systems using the I-V signature
By ABDELHADI BENZAGMOUT [View]
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Abstract: Photovoltaic power plants are more and more numerous all over the planet. In France, profit of PV power plants is done by a fixed buying back price of electricity. The repurchase price of electricity is constant until 2020, then variability of electricity will begin. Thus, to keep PV power plant profitable, a new management model is necessary. This model includes resource prediction, fault detection and management of maintenance and servicing to maximize energy production. This paper focuses only on the fault detection. In the first part, we will present the I-V signature of the panel in healthy and faulty mode. Then, we will focus on the electrical model. This model permits us to simulate the cell, panel and string in healthy and faulty mode. Finally, we present the fault detection algorithm using the I-V signature.

EPE 2020 - LS3e: Photovoltaics
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 05: Renewable Energy Power Systems > EPE 2020 - LS3e: Photovoltaics
	[return to parent folder]

	Control of a two-stage, single-phase grid-tied, GaN based solar micro-inverter By Anthonty BIER	[View] [Download]
Abstract: This work presents the modelling and the implementation of the control of a single-phase grid-tied GaN micro-inverter dedicated to photovoltaic applications. First, the power hardware based wide-band-gap components is shown, and then, switches pulses control blocks and control loops of this specific grid-tied inverter are described.

	Effects of PV Panel and Battery Degradation on PV-Battery System Performance and Economic Profitability By Monika SANDELIC	[View] [Download]
Abstract: The performance of the photovoltaics (PV) systems with integrated battery energy storage is influenced by key-components degradation over time. In long-term operation, this aspect can affect the overall economic profitability of the system. In this paper, the impacts of the degradation and the lifetime of the key components of the PV-battery system on economic profitability are investigated. The influences of PV panel and battery degradation on the electrical loading and lifetime of the power converters are also demonstrated. A case study reveals that the economic profitability reduces more than 35\% due to the degradation over time in service. It is concluded that the performance degradation needs to be carefully considered when analysing the economic profitability of the PV-battery systems.

	Extended Boost PV inverter topology for the reduction of common-mode leakage current in three-phase applications By Georgios ORFANOUDAKIS	[View] [Download]
Abstract: Photovoltaic (PV) inverters must not generate high levels of common-mode (CM) ground leakage currents, which may flow due to fast variations in their CM voltage. Moreover, a highly desirable feature for PV inverters is their voltage step-up capability, which enables operation with lower DC input voltage levels, thus extending energy harvesting over wider solar irradiance and temperature ranges. This paper presents a new three-phase Boost PV inverter topology and its modulation strategy, designed based on a new concept for suppressing CM leakage currents in three-phase PV inverters. In contrast to past-proposed three-phase step-up topologies, the proposed PV inverter uses a modified Boost converter instead of a transformerless inverter, as well as a modulation strategy generating high-quality PWM voltage. Due to their combined characteristics, the variation of the CM voltage generated by the proposed PV inverter is minimized, which radically improves its CM current suppressing capability. The structure and operating principle of the proposed topology are presented, and its effectiveness with respect to CM current suppression is demonstrated through simulation results in MATLAB/Simulink.

	Modeling and fault detection in photovoltaic systems using the I-V signature By ABDELHADI BENZAGMOUT	[View] [Download]
Abstract: Photovoltaic power plants are more and more numerous all over the planet. In France, profit of PV power plants is done by a fixed buying back price of electricity. The repurchase price of electricity is constant until 2020, then variability of electricity will begin. Thus, to keep PV power plant profitable, a new management model is necessary. This model includes resource prediction, fault detection and management of maintenance and servicing to maximize energy production. This paper focuses only on the fault detection. In the first part, we will present the I-V signature of the panel in healthy and faulty mode. Then, we will focus on the electrical model. This model permits us to simulate the cell, panel and string in healthy and faulty mode. Finally, we present the fault detection algorithm using the I-V signature.