ID 54297341 © Michal Bednarek | Dreamstime.com
industrial_dreamstime_l_54297341
ID 348425309 © Yuriy Nedopekin | Dreamstime.com
datacenter_dreamstime_l_348425309
William Wong, 2025 © Endeavor Business Media
Do you recognize these charts
Dreamstime_masta4650_2764561
motor_dreamstime_masta4650_2764561_promo
Vijay Deshpande
6629724c4e22a7001e414dc8 Promo Fig11lampsoff

Solar Constant Lighting System Uses PV-Pushback-Effect (Download)

April 24, 2024

Read this article online.

Solar day lamps (SDLs) are made by simply connecting an LED array to a solar photovoltaic (PV) panel. SDLs represent a highly cost-effective way of utilizing solar energy for lighting. However, SDLs suffer from drawbacks such as daytime-only lighting, light-intensity fluctuations based on sunlight intensity, and low output on cloudy or rainy days.

To eliminate those drawbacks, a simple mains backup system is proposed. Figure 1 shows the block diagram of solar lighting system using the PV-Pushback-Effect. It consists of a load (here, it’s an SDL) that’s fed from two sources. The first source is the solar PV power and the second source is mains power with an AC-DC converter. Before connecting these two power sources, a diode and resistor are connected in series with their respective output terminals. The diodes DS and DM ensure that the current from the other source is blocked.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!