Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Equivalent circuit of photovoltaic generator using Newton-Raphson algorithm
Univ Patras, Dept Elect & Comp Engn, Patras, Greece.ORCID-id: 0000-0001-9750-9863
2012 (Engelska)Ingår i: Compel, ISSN 0332-1649, Vol. 31, nr 4, s. 1224-1245Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Purpose - The purpose of this paper is to develop a linearized equivalent electrical circuit of a photovoltaic generator. This circuit is appropriate to confront problems such as numerical instability, increased computational time and nonlinear/non-canonical form of system equations that arise when a photovoltaic system is modelled, either with differential equations or with equivalent resistive circuits that are generated by electromagnetic transient software packages for power systems studies. Design/methodology/approach - The proposed technique is based on nonlinear and well-tested ipv 2 vpv equations which are however used in an alternative mathematical manner. The application of the Newton-Raphson algorithm on the ipv 2 vpv equations leads to uncoupling of the ipv and vpv quantities in each time step of a digital simulation. This uncoupling is represented by a linearized equivalent electrical circuit. Findings - The application of nodal analysis equivalent resistive circuits using the proposed equivalent photovoltaic generator circuit leads to a system model based on linear algebraic equations. This is in opposition to the nonlinear models that normally result when a nonlinear ipv 2 vpv equation is used. In addition, using the proposed scheme, the regular systematic methods of circuit analysis are fully capable of deriving the differential equations of a photovoltaic system in standard form, thus avoiding the time-consuming solution process of nonlinear models. Originality/value - In this paper, a new method of using the ipv 2 vpv characteristic equations is proposed which remarkably simplifies photovoltaic systems modeling. Moreover, a very important practical application is that by using this methodology one can develop a photovoltaic generator element in electromagnetic transient programs for power systems analysis, of great value to power engineers who are involved in photovoltaic systems modeling. © 2012 Emerald Group Publishing Limited.

Ort, förlag, år, upplaga, sidor
Emerald Group Publishing Limited, 2012. Vol. 31, nr 4, s. 1224-1245
Nyckelord [en]
Characteristic equation; Computational time; Design/methodology/approach; Digital simulation; Electro-magnetic transient; Electromagnetic transient program; Equivalent electrical circuits; Linear algebraic equation; Newton-Raphson algorithm; Nodal analysis; Non-linear model; Non-Linearity; Numerical instability; Photovoltaic systems; Power engineers; Resistive circuits; Solution process; Standard form; System equations; System models; Systematic method; Time step, Control nonlinearities; Differential equations; Electric network analysis; Electric power generation; Electric resistance; Linear equations; Linearization; Mathematical models; Networks (circuits); Newton-Raphson method; Nonlinear systems; Solar energy; Systems analysis; Transients, Nonlinear equations
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
URN: urn:nbn:se:kau:diva-63771DOI: 10.1108/03321641211227492ISI: 000308896700018Scopus ID: 2-s2.0-84864609699OAI: oai:DiVA.org:kau-63771DiVA, id: diva2:1142059
Tillgänglig från: 2017-09-18 Skapad: 2017-09-18 Senast uppdaterad: 2019-05-27Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Theocharis, Andreas

Sök vidare i DiVA

Av författaren/redaktören
Theocharis, Andreas
I samma tidskrift
Compel
Elektroteknik och elektronik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 35 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf