2021 17-th International Conference on Electrical Machines, Drives and Power Systems ELMA2021

1 - 4 July 2021


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The 17th International Conference on Electrical Machines, Drives and Power Systems ELMA 2021 will be held in Sofia, the Capital City of Bulgaria, in the Technical University, Faculty of Electrical Engineering, Bl. 12.


Sofia (Bulgarian: София) is the capital and largest city of Bulgaria. It is situated in western Bulgaria, at the foot of Vitosha mountain, in the Sofia Valley that is surrounded by mountains from all sides. The valley has an average altitude of 550 meters (1,800 ft). Three mountain passes lead to the city, which have been key roads since antiquity, connecting the Adriatic Sea and Central Europe with the Black and Aegean Seas, the Middle East and Asia: Sofia occupies a strategic position at the center of the Balkan Peninsula, at the crosspoint of major
international trade corridors.


The city is known for its around 50 mineral and thermal springs whose water has been used as a cure for various diseases from the antiquity to the contemporary era. Sofia's history spans for over 2,400 years. Its ancient name Serdica derives from the local tribe of the Serdi who established the town in the 5th century BC. It remained a relatively small settlement until the 3th century AD when the roman Emperor Constantine made this city an administrative center of the region. Constantine himself was born in this province, in the city of Nis, not far away from Sofia (150 km from Sofia, Nis is nowadays in the Republic of Serbia). Serdica became a significant political and economic center, more so — it became one of the first Roman cities where Christianity was recognized as an official religion (under the rule of emperor Galerius). For Constantine the Great it was 'Sardica mea Roma est' (Serdica is my Rome). He even wanted to move the capital of his empire in Serdica, but due to other reasons he chose Constantinople for his new capital (nowadays Istanbul, Turkey). In 343 AD, the Council of Serdica was held in the city, in a church located the site where the Church of Saint Sophia (the Holy Wisdom) was built later in 6th century. After this council, Christianity was divided in two major branches: Roman Catholic and Eastern Orthodox.

In the 9th century AD after a successful siege, the city was overtaken by the armies of the Bulgarian prince Krum. Later, in the middle ages, the Bulgarians named this city Sredets (СРѢДЄЦЪ), which is related to “среда” (sreda=middle, center), because of the location of the city at the center of the Balkan Peninsula. This name first appeared in the 11th-century and was widely used until the 20th century.

The outlook of Sofia combines a wide range of architectural styles: from Christian Roman and Byzantine architecture and medieval Bulgarian fortress to Neoclassicism and soviet-era. A number of ancient Roman, Byzantine and medieval Bulgarian buildings are preserved in the center of the city. These include the 4th century Rotunda of St. George, the 6th century church of holy Sophia, the walls of the Serdica fortress and the partially preserved roman Amphitheatre of Serdica.

Useful links:
For more information about Sofia, visit the official tourist site: https://www.visitsofia.bg/en/
Tourist map of Sofia: here
Site of  the Sofia metropolitain: https://www.metropolitan.bg/en/
Car sharing service: https://spark.bg/en/
Taxi services: https://www.yellow333.com/en/ 

Last changed on 18.01.2021, 12:28:21
This page will be accessible until 31.12.2021

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