Tampere University of Technology

TUTCRIS Research Portal

Kari Lappalainen

  1. 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

  2. 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

  3. 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

  4. 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

  5. Published

    Effects of irradiance transition characteristics on the mismatch losses of different electrical PV array configurations

    Lappalainen, K. & Valkealahti, S., 2017, In : IET Renewable Power Generation. 11, 2, p. 248-254

    Research output: Contribution to journalArticleScientificpeer-review

  6. Published

    Effects of irradiance transitions on the output power fluctuations of different PV array configurations

    Lappalainen, K. & Valkealahti, S., Nov 2016, 2016 IEEE Innovative Smart Grid Technologies - Asia (ISGT-Asia). IEEE, p. 705-711 7 p.

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

  7. Published

    Effects of PV array layout, electrical configuration and geographic orientation on mismatch losses caused by moving clouds

    Lappalainen, K. & Valkealahti, S., 1 Mar 2017, In : Solar Energy. 144, p. 548-555 8 p.

    Research output: Contribution to journalArticleScientificpeer-review

  8. 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

  9. 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

  10. Published

    Fluctuation of PV array global maximum power point voltage during irradiance transitions caused by clouds

    Lappalainen, K. & Valkealahti, S., 18 Nov 2019, In : IET Renewable Power Generation. 13, 15, p. 2864-2870 7 p.

    Research output: Contribution to journalArticleScientificpeer-review

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