Photoluminescence-Imaging-Based Evaluation of Non-Uniform CdTe Degradation

Steven Johnston; David Albin; Peter Hacke; Steven Harvey; Helio Moutinho; Mowafak Al-Jassim; Wyatt Metzger

doi:10.1109/PVSC.2017.8366452

Photoluminescence-Imaging-Based Evaluation of Non-Uniform CdTe Degradation

Steven Johnston, David Albin, Peter Hacke, Steven Harvey, Helio Moutinho, Mowafak Al-Jassim, Wyatt Metzger

Materials Science

Research output: Contribution to conference › Paper

4 Scopus Citations

Abstract

A control algorithm is designed to smooth the variability of PV power output using distributed batteries. The tradeoff between smoothing and battery size is shown. It is also demonstrated that large numbers of highly distributed current, voltage, and irradiance sensors can be utilized to control the distributed storage in a more optimal manner. It is also demonstrated that centralized energy storage control for PV ramp rate smoothing requires very fast communication, typically less than a 15-second update rate. Finally, advanced inverter dynamic reactive current is shown to provide voltage variability smoothing, hence reducing the number of voltage regulator tap changes without energy storage.

Original language	American English
Pages	3305-3308
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC.2017.8366452
State	Published - 2018
Event	2017 IEEE 44th Photovoltaic Specialist Conference (PVSC) - Washington, D.C. Duration: 25 Jun 2017 → 30 Jun 2017

Conference

Conference	2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
City	Washington, D.C.
Period	25/06/17 → 30/06/17

NREL Publication Number

NREL/CP-5K00-67855

Keywords

accelerated aging
electroluminescence
II-VI semiconductor materials
imaging
photoluminescence
photovoltaic cells
reliability
thermal analysis

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10.1109/PVSC.2017.8366452

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title = "Photoluminescence-Imaging-Based Evaluation of Non-Uniform CdTe Degradation",

abstract = "A control algorithm is designed to smooth the variability of PV power output using distributed batteries. The tradeoff between smoothing and battery size is shown. It is also demonstrated that large numbers of highly distributed current, voltage, and irradiance sensors can be utilized to control the distributed storage in a more optimal manner. It is also demonstrated that centralized energy storage control for PV ramp rate smoothing requires very fast communication, typically less than a 15-second update rate. Finally, advanced inverter dynamic reactive current is shown to provide voltage variability smoothing, hence reducing the number of voltage regulator tap changes without energy storage.",

keywords = "accelerated aging, electroluminescence, II-VI semiconductor materials, imaging, photoluminescence, photovoltaic cells, reliability, thermal analysis",

author = "Steven Johnston and David Albin and Peter Hacke and Steven Harvey and Helio Moutinho and Mowafak Al-Jassim and Wyatt Metzger",

year = "2018",

doi = "10.1109/PVSC.2017.8366452",

language = "American English",

pages = "3305--3308",

note = "2017 IEEE 44th Photovoltaic Specialist Conference (PVSC) ; Conference date: 25-06-2017 Through 30-06-2017",

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TY - CONF

T1 - Photoluminescence-Imaging-Based Evaluation of Non-Uniform CdTe Degradation

AU - Johnston, Steven

AU - Albin, David

AU - Hacke, Peter

AU - Harvey, Steven

AU - Moutinho, Helio

AU - Al-Jassim, Mowafak

AU - Metzger, Wyatt

PY - 2018

Y1 - 2018

N2 - A control algorithm is designed to smooth the variability of PV power output using distributed batteries. The tradeoff between smoothing and battery size is shown. It is also demonstrated that large numbers of highly distributed current, voltage, and irradiance sensors can be utilized to control the distributed storage in a more optimal manner. It is also demonstrated that centralized energy storage control for PV ramp rate smoothing requires very fast communication, typically less than a 15-second update rate. Finally, advanced inverter dynamic reactive current is shown to provide voltage variability smoothing, hence reducing the number of voltage regulator tap changes without energy storage.

AB - A control algorithm is designed to smooth the variability of PV power output using distributed batteries. The tradeoff between smoothing and battery size is shown. It is also demonstrated that large numbers of highly distributed current, voltage, and irradiance sensors can be utilized to control the distributed storage in a more optimal manner. It is also demonstrated that centralized energy storage control for PV ramp rate smoothing requires very fast communication, typically less than a 15-second update rate. Finally, advanced inverter dynamic reactive current is shown to provide voltage variability smoothing, hence reducing the number of voltage regulator tap changes without energy storage.

KW - accelerated aging

KW - electroluminescence

KW - II-VI semiconductor materials

KW - imaging

KW - photoluminescence

KW - photovoltaic cells

KW - reliability

KW - thermal analysis

U2 - 10.1109/PVSC.2017.8366452

DO - 10.1109/PVSC.2017.8366452

M3 - Paper

SP - 3305

EP - 3308

T2 - 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)

Y2 - 25 June 2017 through 30 June 2017

ER -

Photoluminescence-Imaging-Based Evaluation of Non-Uniform CdTe Degradation

Abstract

Conference

NREL Publication Number

Keywords

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