Solar Energy Harvesting
Environmental energy harvesting, in particular solar based, has emerged as a viable technique to supplement battery supplies. Solar energy harvesting through photo-voltaic conversion provides the highest power density of any energy harvesting module. This makes solar energy harvesting the method of choice to power an embedded system that consumes several mW using a reasonably small harvesting module. Solar energy harvesting components, such as solar panels, and energy storage elements, such as batteries or ultracapacitors, have different voltage-current characteristics, which must be matched to each other as well as the energy requirements of the system to maximize harvesting efficiency.