Abstract
The traditional way of testing power generation modules and projecting their performance may be prone to overestimation of capabilities. Frequently, an assumption is made that the no-load (NL) voltage measured during testing can simply be employed as the default V NL in all subsequent calculations using data taken under load. In reality, while current is flowing, wattage due to the Peltier effect creates temperature drops across interface materials. These significantly diminish the ΔT across the thermoelectric material and attenuate the Seebeck voltage. Therefore, for each level of load current, there is a different V NL that corresponds to the associated ΔT. Each of these distinctive V NL levels should be used for calculations relative to its associated operational point. With the proper equipment and use of curve fits, it is possible to test and project in a manner which can more closely approximate the true performance characteristics of power generation devices.
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