Optimal Design of Modern Transformerless PV Inverter Topologies

Stefanos Saridakis, Eftichios Koutroulis, Frede Blaabjerg

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Resumé

The design optimization of H5, H6, neutral point clamped, active-neutral point clamped, and conergy-NPC transformerless photovoltaic (PV) inverters is presented in this paper. The components reliability in terms of the corresponding malfunctions, affecting the PV inverter maintenance cost during the operational lifetime period of the PV installation, is also considered in the optimization process. According to the results of the proposed design method, different optimal values of the PV inverter design variables are derived for each PV inverter topology and installation site. The H5, H6, neutral point clamped, active-neutral point clamped and conergy-NPC PV inverters designed using the proposed optimization process feature lower levelized cost of generated electricity and lifetime cost, longer mean time between failures and inject more PV-generated energy into the electric grid than their nonoptimized counterparts, thus maximizing the total economic benefit obtained during the operational time of the PV system.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Energy Conversion
Vol/bind28
Udgave nummer2
Sider (fra-til)394-404
Antal sider11
ISSN0885-8969
DOI
StatusUdgivet - 2013

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Topology
Costs
Electricity
Economics
Optimal design
Design optimization

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Saridakis, Stefanos ; Koutroulis, Eftichios ; Blaabjerg, Frede. / Optimal Design of Modern Transformerless PV Inverter Topologies. I: I E E E Transactions on Energy Conversion. 2013 ; Bind 28, Nr. 2. s. 394-404 .
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title = "Optimal Design of Modern Transformerless PV Inverter Topologies",
abstract = "The design optimization of H5, H6, neutral point clamped, active-neutral point clamped, and conergy-NPC transformerless photovoltaic (PV) inverters is presented in this paper. The components reliability in terms of the corresponding malfunctions, affecting the PV inverter maintenance cost during the operational lifetime period of the PV installation, is also considered in the optimization process. According to the results of the proposed design method, different optimal values of the PV inverter design variables are derived for each PV inverter topology and installation site. The H5, H6, neutral point clamped, active-neutral point clamped and conergy-NPC PV inverters designed using the proposed optimization process feature lower levelized cost of generated electricity and lifetime cost, longer mean time between failures and inject more PV-generated energy into the electric grid than their nonoptimized counterparts, thus maximizing the total economic benefit obtained during the operational time of the PV system.",
keywords = "Photovoltaic system, Optimization, DC/AC inverter, Transformerless, Reliability",
author = "Stefanos Saridakis and Eftichios Koutroulis and Frede Blaabjerg",
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Optimal Design of Modern Transformerless PV Inverter Topologies. / Saridakis, Stefanos ; Koutroulis, Eftichios ; Blaabjerg, Frede.

I: I E E E Transactions on Energy Conversion, Bind 28, Nr. 2, 2013, s. 394-404 .

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Optimal Design of Modern Transformerless PV Inverter Topologies

AU - Saridakis, Stefanos

AU - Koutroulis, Eftichios

AU - Blaabjerg, Frede

PY - 2013

Y1 - 2013

N2 - The design optimization of H5, H6, neutral point clamped, active-neutral point clamped, and conergy-NPC transformerless photovoltaic (PV) inverters is presented in this paper. The components reliability in terms of the corresponding malfunctions, affecting the PV inverter maintenance cost during the operational lifetime period of the PV installation, is also considered in the optimization process. According to the results of the proposed design method, different optimal values of the PV inverter design variables are derived for each PV inverter topology and installation site. The H5, H6, neutral point clamped, active-neutral point clamped and conergy-NPC PV inverters designed using the proposed optimization process feature lower levelized cost of generated electricity and lifetime cost, longer mean time between failures and inject more PV-generated energy into the electric grid than their nonoptimized counterparts, thus maximizing the total economic benefit obtained during the operational time of the PV system.

AB - The design optimization of H5, H6, neutral point clamped, active-neutral point clamped, and conergy-NPC transformerless photovoltaic (PV) inverters is presented in this paper. The components reliability in terms of the corresponding malfunctions, affecting the PV inverter maintenance cost during the operational lifetime period of the PV installation, is also considered in the optimization process. According to the results of the proposed design method, different optimal values of the PV inverter design variables are derived for each PV inverter topology and installation site. The H5, H6, neutral point clamped, active-neutral point clamped and conergy-NPC PV inverters designed using the proposed optimization process feature lower levelized cost of generated electricity and lifetime cost, longer mean time between failures and inject more PV-generated energy into the electric grid than their nonoptimized counterparts, thus maximizing the total economic benefit obtained during the operational time of the PV system.

KW - Photovoltaic system

KW - Optimization

KW - DC/AC inverter

KW - Transformerless

KW - Reliability

U2 - 10.1109/TEC.2013.2252013

DO - 10.1109/TEC.2013.2252013

M3 - Journal article

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EP - 404

JO - I E E E Transactions on Energy Conversion

JF - I E E E Transactions on Energy Conversion

SN - 0885-8969

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