A rational strength prediction approach to the design of double-glass photovoltaic modules

Yuki Shitanoki, Stephen J. Bennison, Yasuhiro Koike

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A rational and systematic approach to estimate the load resistance and strength of various double-glass photovoltaic modules is demonstrated. The approach consists of three steps: 1) calculation of module stiffness based on a laminate effective thickness theory; 2) calculation of the highest stress concentration in the two glass plies of the module using a modified plate theory; and 3) estimation of glass breakage probability of the module against specified loads by comparing the stress concentration calculated in step 2 with allowable glass stress and associated breakage probability. In the modified plate theory, a parameter that incorporates stress mitigation by a peripheral frame and installation is introduced to enable simple and fast calculations. The allowable stress of glass in step 3 is obtained by the Weibull analysis of glass breakage data obtained by a ring-on-ring test. The calculation methodology has been validated experimentally using load tests and direct measurements of glass principal stress in a real module under load. The approach can be used for fast screening and initial design of various structures to resist specified imposed mechanical loads.

Original languageEnglish
Article number6839067
Pages (from-to)1071-1078
Number of pages8
JournalIEEE Journal of Photovoltaics
Volume4
Issue number4
DOIs
Publication statusPublished - 2014

Fingerprint

modules
Glass
glass
predictions
plate theory
Loads (forces)
stress concentration
Stress concentration
load tests
rings
laminates
Laminates
installing
stiffness
Screening
screening
Stiffness
methodology
estimates

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

A rational strength prediction approach to the design of double-glass photovoltaic modules. / Shitanoki, Yuki; Bennison, Stephen J.; Koike, Yasuhiro.

In: IEEE Journal of Photovoltaics, Vol. 4, No. 4, 6839067, 2014, p. 1071-1078.

Research output: Contribution to journalArticle

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