Tampere University of Technology

TUTCRIS Research Portal

Kari Lappalainen

  1. Published

    Cloud Enhancement Phenomenon and its Effect on PV Generators

    Järvelä, M., Lappalainen, K. & Valkealahti, S., 25 Sep 2018, 35th European Photovoltaic Solar Energy Conference and Exhibition (35th EU PVSEC), 24–28 September, 2018, Brussels, Belgium. p. 1964-1968

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  2. Published

    Effects of the Sharpness of Shadows on the Mismatch Losses of PV Generators under Partial Shading Conditions Caused by Moving Clouds

    Lappalainen, K., Mäki, A. & Valkealahti, S., 2013, 28th European Photovoltaic Solar Energy Conference and Exhibition, 30 September - 4 October 2013, Paris. p. 4081-4086 6 p. (European Photovoltaic Solar Energy Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  3. Published

    Recognition and modelling of irradiance transitions caused by moving clouds

    Lappalainen, K. & Valkealahti, S., Feb 2015, In : Solar Energy. 112, p. 55-67 13 p.

    Research output: Contribution to journalArticleScientificpeer-review

  4. Published

    Aurinkokennoista saadaan paras tuotto kirkkaalla, kylmällä säällä

    Lappalainen, K., 2014, In : Sähköala. 1-2, p. 40-42 3 p.

    Research output: Contribution to journalArticleProfessional

  5. Published

    Effects of the Size of PV Arrays on Mismatch Losses under Partial Shading Conditions Caused by Moving Clouds

    Lappalainen, K., Mäki, A. & Valkealahti, S., 2013, 28th European Photovoltaic Solar Energy Conference and Exhibition, 30 September - 4 October 2013, Paris. p. 4071-4076 6 p. (European Photovoltaic Solar Energy Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  6. Published

    Recognition of irradiance transitions caused by moving clouds harmful to the operation of PV systems

    Lappalainen, K. & Valkealahti, S., 2014, 29th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2014, Proceedings of the international Conference, September 22 - September 26, 2014, Amsterdam, The Netherlands. Bokhoven, T. P., Jäger-Waldau, A. & Helm, P. (eds.). Munich, Germany: WIP, p. 2650-2653 4 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  7. Published

    Recognition of shading events caused by moving clouds and determination of shadow velocity from solar radiation measurements

    Lappalainen, K. & Valkealahti, S., 14 Sep 2015, 31st European Photovoltaic Solar Energy Conference and Exhibition (31st EU PVSEC), 14– 18 September, 2015, Hamburg, Germany . p. 1568-1573 6 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  8. Published

    Analysis of shading periods caused by moving clouds

    Lappalainen, K. & Valkealahti, S., 1 Oct 2016, In : Solar Energy. 135, p. 188-196 9 p.

    Research output: Contribution to journalArticleScientificpeer-review

  9. Published

    Mathematical Parametrisation of Irradiance Transitions Caused by Moving Clouds for PV System Analysis

    Lappalainen, K. & Valkealahti, S., 2016, 32nd European Photovoltaic Solar Energy Conference and Exhibition (32nd EU PVSEC), 20–24 June, 2016, Munich, Germany . p. 1485-1489 5 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  10. Published

    Apparent velocity of shadow edges caused by moving clouds

    Lappalainen, K. & Valkealahti, S., 15 Nov 2016, In : Solar Energy. 138, p. 47-52 6 p.

    Research output: Contribution to journalArticleScientificpeer-review

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