NXP Demonstrates Solar Street Lighting
The key to the breakthrough lies in the combination of new High Brightness LEDs and unique patented optics from Philips Lighting, together with NXP's MPT61x range of configurable ICs for Maximum Power Point Tracking (MPPT), which can deliver 98% power conversion efficiency in solar photovoltaic (PV) cells.
Philips' High Brightness LEDs offer a highly energy-efficient solution, which is superior to any conventional lighting and allows street lamps to be spaced up to 50 meters apart -- much wider than is possible with other solutions. This makes Solar Gen2 the most cost-effective solution per km of road lighting and provides a serious alternative to grid-connected AC systems.
NXP's MPT61x intelligent charge controller family enables Solar Gen2 to transfer the maximum amount of power from the solar panels to the batteries. The MPT61x ICs also ensure that the charging and discharging of the battery happens in a smart way to maximize battery life. In addition, the controllers can dim light levels as needed based on a self-learning intelligence and history log.
Kees van der Klauw, SVP Technology & Development at Philips Lighting, says: "Solar Gen2 is a fantastic example of how several companies have worked together to create an innovative, best-in-class solution. It addresses a real need felt by 1.6 billion people in countries where the electricity grid cannot be relied upon to power street lighting at night. Solar Gen2 provides a cost-effective, reliable, off-grid outdoor lighting solution that can compete with existing on-grid lighting in performance, integral cost and energy consumption, improving the quality of people's lives around the world."