#ACDC BAND RADIANT ENERGY EXAMPLES VERIFICATION#
#ACDC BAND RADIANT ENERGY EXAMPLES SERIES#

Relevant assumptions and limitations of the mathematical models are discussed. The goals of the investigations were three-fold: (1) systematize the mathematical models to be used in each of the technical areas with special attention devoted to determination of module performance sensitivity to thickness and physical properties of candidate encapsulation construction elements, (2) establish design/performance trends that will be useful to the module designer, and (3) establish design priorities that is, identify items that exert the more » strongest influences on module electrical power output, manufacturing cost, and safety. Detailed investigations are presented of the thermal, optical, structural, and electrical isolation aspects of photovoltaic module design for terrestrial applications. (LEW) = ,Īn analytical model is developed for predicting the performance of solar cell module encapsulation designs.

#ACDC BAND RADIANT ENERGY EXAMPLES VERIFICATION#

The verification process involved measuring steady-state solar cell temperature and power output for a known radiative energy source and other well-defined environmental conditions. The goal of the thermal test was to confirm the influence of the module backside emissivity on cell temperature and the insensitivity of cell temperature to pottant thickness. The structural deflection test measured module deflection, stress in the solar cell, and stress in the load-bearing member for the following parameters: pottant thickness, ribbed versus unribbed wood substrates, pottant modulus of more » elasticity, normal pressure load, cell location, and load-bearing member material and thickness. The thermal structural test consisted of measuring the temperatures and mechanical strains in the cell and in the load-bearing member for a variety of encapsulation schemes and then comparing the measured and predicted strains for: thermal expansion coefficient of load-bearing member, pottant thickness, and pottant modulus of elasticity. Specific items investigated were: effect of Craneglas on breakdown voltage, effect of pottant thickness on breakdown voltage, and electrical isolation capability of wood substrates. In the electrical isolation test, the breakdown voltage was measured for specially-designed coupons that employed simulated solar cells and different encapsulation schemes.

The optical test involved measuring the electrical power output of several encapsulated cells under illumination and comparing these measurements with values predicted by the optical model. Five separate and independent tests comprised the verification test segment of the test plan.

#ACDC BAND RADIANT ENERGY EXAMPLES SERIES#

A series of tests was performed to verify the analytical methodology and computer programs developed for performing tradeoffs in the thermal, optical, structural, and electrical isolation design of encapsulation system for flat-plate photovoltaic modules.

Acdc band radiant energy examples