Design of self powered wireless sensor network using hybrid PV-wind system

The commercially available sensor nodes are battery-driven devices. A number of nodes together constitute a network called wireless sensor network. As days proceed, the batteries used in the WSN lose their charge and subsequently get isolated from the network. Many energy harvesting schemes have been proposed to alleviate this problem which is to convert the ambient energy from the environment into electricity to power the sensor nodes. Energy harvesting from single source have environmental limitations like if the sensor is installed inside a building solar energy cannot be used and with wind generators is that they are too big, and are expensive if the size has to be decreased. Hence proposed system is design to provide multisource and self powered power supply to wireless sensor node which could stay charged by generating power on its own.