Abstract
In areas where the access to an off-grid electricity is not possible or not reliable, the transport and conservation of vaccine and medicines is not possible. Nevertheless, these areas need and have right to access medical. This need is much more critical nowadays since preservation of COVID-19 vaccines require cold-chain at some level of degree. Solar energy can be used to power the refrigerator destined to keep the medicines and vaccines cool. Even tough stand-alone PV is already used to power theses coolers, the use of a PV-TE hybrid generators could allow the improvement of the autonomy. The output power of the PV alone and the hybrid are investigated under Niger meteorological conditions. The two systems coupled with a medical cooler are investigated. The results show that the hybrid system produces considerably more power to be stored in the battery, indicating much longer autonomy.
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