Research output per year
Research output per year
Personal profile
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Doctor of Philosophy, Physics, University of Jyväskylä
Award Date: 16 Dec 1987
Licentiate of Philosophy, Physics, University of Jyväskylä
Award Date: 9 Apr 1986
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Analysis of the operation of PV strings at the MPP closest to the nominal MPP voltage instead of the global MPP based on measured current–voltage curves
Lappalainen, K. & Valkealahti, S., 20 Jan 2022, In: EPJ Photovoltaics. 13, 10 p., 4.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile6 Downloads (Pure) -
A novel procedure for identifying the parameters of the single-diode model and the operating conditions of a photovoltaic module from measured current–voltage curves
Kalliojärvi-Viljakainen, H., Lappalainen, K. & Valkealahti, S., Nov 2022, In: Energy Reports. 8, p. 4633-4640 8 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile6 Downloads (Pure) -
Experimental Observations about the Cloud Enhancement Phenomenon on PV Strings
Lappalainen, K. & Valkealahti, S., 2022, 8th World Conference on Photovoltaic Energy Conversion (8th WCPEC). EU PVSEC, p. 1354-1358 5 p. (Proceedings (EU PVSEC)).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Open AccessFile4 Downloads (Pure) -
Feasibility of Photovoltaic Module Single-Diode Model Fitting to the Current–Voltage Curves Measured in the Vicinity of the Maximum Power Point for Online Condition Monitoring Purposes
Kalliojärvi, H., Lappalainen, K. & Valkealahti, S., 30 Nov 2022, In: Energies. 15, 23, 21 p., 9079.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile2 Downloads (Pure) -
Sizing of energy storage systems for ramp rate control of photovoltaic strings
Lappalainen, K. & Valkealahti, S., 2022, In: Renewable Energy. 196, p. 1366-1375 10 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile31 Downloads (Pure)
Activities
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Solar Energy (Journal)
Seppo Valkealahti (Reviewer)
31 Aug 2019Activity: Publication peer-review and editorial work › Reviewer of Scientific Journal
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Irradiance and PV Power Fluctuations Caused by Clouds
Seppo Valkealahti (Speaker)
10 Nov 2018 → 11 Nov 2018Activity: Talk or presentation › Conference presentation
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Renewable Energy (Journal)
Seppo Valkealahti (Reviewer)
7 Nov 2018Activity: Publication peer-review and editorial work › Reviewer of Scientific Journal
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Energy Reports (Journal)
Seppo Valkealahti (Reviewer)
7 Aug 2018Activity: Publication peer-review and editorial work › Reviewer of Scientific Journal
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Elahe Doroudchi, Sustainable Energy-efficient Microgrid – A Case Study on Local Energy System Design, Aalto University School of Electrical Engineering, Finland, 2018.
Seppo Valkealahti (Examiner)
14 Jun 2018Activity: Evaluation, examination and supervision › Pre-examination of dissertation or acting as opponent to doctoral students