TESTING OF THE RECUPERATIVE MODES OF TRAM MOTRICE PESA 120NaSf ALONG SEGMENTS OF THE TRACK POWERED BY THE  ‘MOTOPISTA’ CURRENT-RECTIFIER STATION IN SOFIA, PART I

Lyubomir Sekulov; Martina Tomcheva

Scientific paper ID 2282 : 2022/3

TESTING OF THE RECUPERATIVE MODES OF TRAM MOTRICE PESA 120NaSf ALONG SEGMENTS OF THE TRACK POWERED BY THE ‘MOTOPISTA’ CURRENT-RECTIFIER STATION IN SOFIA, PART I

Lyubomir Sekulov, Martina Tomcheva

This survey explores the consumption of power for the tram line running along the Bulgaria Blvd., Sofia, which is powered by the ‘Motopista’ current-rectifier station. The electric transport vehicles (ETV), which run along this segment of the track are tram motrices (TM) of the model PESA 120 NaSf, which have the option for recuperative braking. The TM provide transportation service coverage for lines Nos. 7 and 27, which pertain to the Sofia public transport network and are managed by Sofia Electric Transport LLC. The experimental testing was conducted under normal exploitational conditions over the period 7-25 July, 2022 in the territory of the ‘Motopista’ current-rectifier station. Current measurements were made (direct and reverse) through 6 feeders, powering three sections of the tram line along the Bulgaria Blvd. in Sofia. The measurements of current were taken simultaneously in real time, and voltage measurements were taken at the common power bus. Records of the values were made within a sampling period of 100 ms. The main purpose was to determine the power consumption within this segment of the track in relation to the mode and the scheduling of ETV movements, as well as to determine the amount of the recuperative energy used in the different modes.

Due to the ample volume of data produced in the course of the testing, the report was split into several parts. Part I of the report deals with the main characteristics and parameters of the surveyed track segments, in particular, the lengths of the segments surveyed, the length and characteristics of the contact grid (CG), the length and characteristics of the powering feeders, road profile, movement velocity, the location of the tram stops and the scheduling of the TM.

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наземен електрически транспорт електрически транспортни средства трамвайни мотриси трамваи рекуперация рекуперативно спиране фидери токоизправителни станции.land electric transport electric transport vehicles tram motrice recuperative braking Lyubomir Sekulov Martina Tomcheva

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