▲ Haneolnuri / CEO Gwon Taek-jo

(PowerKorea) South Korean government’s green new deal policy focuses on eco-friendly energy, eco-friendly city and eco-friendly vehicle in a broad term. The government points out sunlight and wind power as promising future energy sources and targets to increase the solar power generation by yearly 6GW until 2025. The green new deal is closely linked with the smart city project where cutting edge technologies play a significant role to efficiently control the city. And smart sunlight street lamp is one of the important subjects of the smart city project.

The existing sunlight street lamps, however, have some issues: lack in battery protection and capacity. This causes under performance and cutting off of the light during the operation. They use the universal charging controller which is not optimized for solar panel, battery kinds and LED lamps. The low-cost policy also is causing poor quality and early discharge. Since most sunlight street lamps have limited battery capacity, the efficiency plays a significant role.

The Haneolnuri’s sunlight street lamp is innovative in this respect: it is loaded with AI and optimized performance program for battery capacity, LED lamp capacity and solar panel. Unlike the existing lamps, the Haneolnuri’s sunlight street lamp tracks the movement of the sun from the east to the west and stores maximum solar power of the day. The patented controller loaded in the lamp tracks the maximum electric energy every 0.5 seconds and sends it to the battery. It controls the LED lamp by 50kHz PWM to send the power lamp by lamp and automatically adjusts the amount of usage depending on the condition time to time. As a result, it prevents complete discharge while extends lifespan of the battery.

Another advantage of the Haneolnuri’s sunlight street lamp is that it uses LiFePO4 battery instead of PB battery which is used in around 70 ordinary sunlight street lamps. LiFePO4 is a little bit bulkier than PB but it gives excellent stability and fire safety as well as easy to install in parks and residential areas not to mention long lifespan.

“Sunlight street lamps send stored power to the lamp through DC to AC to DC. During the course, unnecessary loss of the power occurs. The Haneolnuri’s sunlight street lamp, on the other hand, uses direct DC controlled LED lamp to send the power to the LED without a loss” says Gwon Taek-jo, CEO of Haneolnuri.

“It was such a hassle for managers to travel around to check whether the street lamps are working properly. The good news is that the Haneolnuri’s sunlight street lamp is networked with the central control system so that the managers can check and control in real time the status of the lamps, such as generation quantity, discharge quantity and even electricity bill and carbon dioxide reduction, remotely without making a travel” says 

As for the future plan, Haneolnuri is working on introducing sunlight-wind hybrid street lamp so that it can work under the weather where there is no sun. Also included in the plan is to expand the market overseas starting with developing countries in South East Asia, says Gwon.

“It is our goal to be the leader of smart sunlight street lamp in the world over Korea. I hope our innovative sunlight street lamp will brighten every street corner of the world whether cities or remote areas and we will keep working hard.”

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