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Energy Globe Award

With more than 182 participating countries and over 2000 project submissions annually the Energy Globe Award is today's most prestigious environmental prize worldwide. It distinguishes projects regionally, nationally and globally that conserve resources such as energy or utilize renewable or emission-free sources. Award ceremonies are held all over the world. Prominent personalities as well as Energy Globe Ambassadors in 90 countries support the mission of Energy Globe. The activities of Energy Globe attract worldwide media attention - international TV stations report each year with approximately 1,000 hours of broadcasting time. The aim of the Energy Globe is to raise global attention on sustainable, everywhere applicable environmental solutions and to motivate people to also become active in this area.

National ENERGY GLOBE Award Sri Lanka 2018

Submitted by: Mr Kasun Wijesinghe
Feeding renewable energy sources on to telecom DC bus

Renewable energy feeding on to the DC bus is better than A/C bus for telecom power systems. Hence, this effort is to have arrangement for feeding renewable energy sources on to telecom DC bus while feeding excess energy back to the grid, by replacing conventional unidirectional rectifier modules with bidirectional grid tie converter integrating in to current telecom hybrid controllers.

Initial situation
Systems which have Solar PV energy integration directly on to DC bus have lesser paybacks than integrating it in to A/C bus through Grid tie inverter since lesser conversion stages leads to increased efficiency, Hence, it is recommended to go for Solar PV integration on to DC bus rather than integrating for A/C bus with Net Metering. For example, energy exporting tariffs scheme for on grid Telecom.

The solution is to develop bidirectional converter integrating in to their telecom hybrid controllers. It is the only possible way that helps to harvest full power generation of Solar PV system while it is working as the backup power source in case of a grid outages, make these systems more techno economically attractive. These systems can also be capable of controlling active power and reactive power; hence, capable of integration into smart grids.

The stage one is already achieved by keeping Solar PV Panels parallel to Telecom Hybrid Controller and Typical Grid Tie inverter in one of site. (Pictures are available if permits for attachment in later in a telecom base station named Ibbanwala Junctin Relocation Base Station). Since A/C to DC converter and DC to DC Solar PV MPPT charger controller architecture is slightly modified, there is no significant cost of electronic hardware requirement, since the DSPs are remains same with changed programme and addition of few IGBTs in to the circuits.

We are an enthusiastic supporter of the Energy Globe Awards and its aim to strengthen society’s awareness of the necessity for ecological change, by honouring outstanding best practice projects in environmental sustainability from all parts of the world. ADVANTAGE AUSTRIA is the official Trade Promotion Organisation (TPO) of the Republic of Austria and as a country we are proud of our success in green technologies. Our support of the Energy Globe Awards continues this tradition.

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Source: Wikipedia 2012