Specificity of exploitation and maintenance of electric busses in CTC

Željko Milković,MSc.M.E Director of the company

Slobodan Mišanović, MSc.T.E. Project manger

Dušan Savković,MSc.M.E Tehnical director

Pavle Krstić,MSc.E.E

Slobodan Stević, MSc.E.E

Specificity of the exploitation of the Ebus in Belgrade

- Introduction - Line EKO 1 - Electric buses '' Higer '' - Charging system - Maintenance, safety measures, day care, parking - Exploitation indicators - Environmental benefits - Economy About in Belgrade

City Public Transport Company “Belgrade” Modal split (JKP GSP “Beograd’’) Motorcyclists is the carrier of the public transportation function in 0,10% Cyclists Other Belgrade 0,55% 0,53% Passenger cars subsystem (150 operating on 11 routes), 21,55% Trolley subsystem (94 trolleys operating on 8 routes),

Bus subsystem (609 buses operating on 119 routes). Urban transport 52,86% EKO 1 – e.bus line ( 5 E.buses)

Daily CPTC “Belgrade” transports about 1,580,000 passengers

Pedestrians Participation of bus subsystem in achieved transport 24,41% work is about 70 %

2014-2015-2016-2017-2018… year E-bus a new concept of environmentally clean and energy efficient public

Start of regular exploitation 1/9/2016

Our activities:

GSP Belgrade is a leader in Southeast Europe in monitoring and the implementation of the bus concept on pure electric drive

Cooperation and exchange of experiences with E-bus manufacturers (BYD, Siemens Rampini, Chariot bus-HIGER, Solaris, )

Testing E-bus BYD E12, on lines no.26 and 41 (April 2014) Case Study - Simulation of E-bus, Solaris E12, on line no. 41 (December 2014)

Active participation in international organizations and projects dedicated to E-bus (UITP Bus Committee, UITP-Troll-Committee, Clean Fleets Project, Hybrid User Forum, Civitas, ZeEUS user group .... Line EKO 1 (Vukov spomenik – '' Belvil '')

•The new line, which connects the Old and New Elements of operation of the line 1E Belgrade

•Regeneration of electrical PT with electric drive on Line EKO 1 Number E.bus in operation New Belgrade ( 4 ) Total Turnar Charging length ound interval freq Q •Line passing through the center of city time (km) time (min) .(bus/h) (pass/h) (min) •High attraction lines (L1+L2) (min) 16,1 16 (9+7) 62-68 20 3 240 •Fulfills energy requirements for setting up the charger to the terminus • line length 8 km

The choice of concept of E-bus

Opportune charge on Terminus via pantograph

Storage using super capacitors

• Acceptable charge time • Ability to connect to the trolleybus and tram contact •Principle: Electro static network ( DC), or public distribution electric grid (AC) •High power • E.bus can work all day (especially important in •High efficiency 92-98% summer when air conditioning is used as a large •Temperature range: -40 +65 C. consumer) •Short charge on terminal 5-8 min •The flexibility of the rapid charging and discharging •Larger lifetime: min 10 years •Suitability of recycling

Position of super capacitors

charging phase E-bus to the terminus Table. 8 Technical Data E-bus HIGER KLQ6 Manufacturer ...... Higher Type ...... Electric KLQ6 Length / width / height …………………………. 12000/2550/3680 mm Curb weight...... 12540 kg Passengers……………………………………………….….....……82+1 Mаx.speed……………………………………………………….70 km / h Charging the terminus: 660 V DC or 380 V AC, 580 V DC output, 250 A Charging time at the terminus ...... 5-8 minutes storage system Electricity ...... super capacitors Capacity ...... 20 kWh Manufacturer ...... Aowei Type ...... U-CAP (37DT6-03210) Traction motors ...... 2 Manufacturer ...... Siemens Type ...... 1PV5135 Power ...... 2x90 kW (peak opt.)………...... 2x67 kW (nom. Opt.) Torque ...... 2x430 Nm Inverter ...... DC / AC Manufacturer ...... Zhonglian Type ...... IEVD 130-60ZO6GA Working range ...... 580 V DC / AC 500-650V Convereter ...... DC / DC Manufacturer ...... Zhonglian Type ...... DY074C Working range ...... 12-24-48 V DC Charging system: Pantograph ...... Aowei 37DT6-03212 Auxiliary systems: Air conditioning ...... Thermoking 81DT6 Pump control ...... KVD HDZXB 1416 Compressor ...... IEM ER 230 UC-Cooler ...... Aowei 37DT6 Traction control ...... Siemens 10DT6 External display ...... Novatronic

Charging station ‘’Vukov spomenik’’ (DC/DC) Charging station ‘’Belvil'‘ (AC/DC)

charger in depot "Dorcol" Technical data Input voltage AC 3x380 V 60 kW (DC / DC) DC 660 V Power 150 kW Output voltage 400-600 V DC Maximum current 200-250 А DC The height from the 4.5-4.6 m ground Maintenance, Safety measures, Day care

Simpler maintenance compared to the diesel bus

•Vital parts of the electrical components (inverters, converters, air copresor, pump, supercap ...) modular type

Short replacement time

super capacitor traction inverters compressor, steering pump Block diagram of components and flows for – Higer KLQ 6 Diagnosis or defects are identified in the instrument panel, monitoring in real time Lower maintenance costs ( compared to a diesel bus about 3 times, E.bus 3700 /year, Diesel 11 000 Euro/year ) Comparative overview of components and systems on the bus Check list of services on the 20 000 km (40 000, 60 000, 80 000 km ) Safety measures Operation and maintenance of buses on a purely electrical drive means strict adherence to prescribed security measures and procedures - All components of the high voltage control system must be marked with a warning label and must comply with the electrical current protection according to the ECE R100.

Sticker marking high-voltage locations Marking the invertor with a warning sticker -Drivers operating E-buses must have safety training in the exploitation and charging of E-buses at the depot and terminus.

-Passengers should not be in the E-bus during charging at the terminal.

-Training for maintenance workers with security procedures during preventive and corrective maintenance.

- E-buses must be fitted with a system for detection fire and automatic extinguishing and a switch for switching off the voltage from batteries or super capacitors .

Switch off the voltage from Fire detection system the super capacitor

- When replacing or repairing components and systems that are under high voltage, the input voltage must be switched off. -batteries or super capacitors must be designed or provided with additional equipment ('shock absorbers‘)

• Every day, after the end of the operation, the vehicle passes the automotive line for the external washing of the vehicle

• Routine review system for braking, steering, signaling -Exploitation indicators:

•Working hours per vehicle on day 16-18 h • Realized daily mileage per vehicle 190-215 km •Exploitation speed: 14.8 km / h in the period 14.8-6.10.2017 e.buses were not in operation because of the •Daily number of passengers transported per vehicle 900-1200 works in Roswelt street •Reliability of work on the line: 97.5% The average electricity consumption on the EKO 1 line is about 1.1 kWh / km. (Depending on operating mode, number of passengers, traffic conditions, Expressed impact of the system for heating and air conditioning of the vehicle

1. Transition period (outdoor temperatures 12 to 24 C) 2. Summer period (outdoor temperatures 25 to 38 C) 3. Winter period (outdoor temperature -11 to 12 C)

consumption may vary:

In the spring / autumn period, 1.1 kWh / km direction "A" 0.88 - 1.02 kWh / km direction "B" 1.15 -1.3 kWh / km

In the summer period 1.5 kWh/km (air conditioning included, external temperature + 38 C)

In the winter period max 2 kWh / km (heating included, at outdoor temperatures of -10 C)

Loss of electricity in the charging phase (network, charger, pantograph, super capacitor) about 5% E.bus realized recovery of electricity in the braking phase of about 30% compared to the energy consumed to drive

2.Mach 2018, linija Eko 1 , direction Vuk-Belvil, time 10:23-10:52 -Environmentas low noise level , compared to a diesel bus lower by 13 db (A)

"O" emission of harmful gases Comparison of the emissions of harmful gases of one E.bus and diesel buses on the line ECO 1. annual mileage 60 000 km, consumption* 44 L/100 km

Emissions Emissions Emissions of Emissions of of diesel of diesel E-bus diesel buses* diesel buses* buses* buses* Pollutant (Euro 3) (Euro 4) (Euro 5-EEV) (Euro 6) (kg/annual (kg/annual (kg/annual (kg/annual level) (kg/annual level) level) level) level) CO 0 206 147 147 147 CxHy 0 64.7 45.2 24.3 12.75 NOx 0 490.4 342.1 195.7 39.2 PM 10 0 9.8 1.96 1.95 0.95 • Emission CO2 , WTW WtW=mco2*1.2

mco2 =mf*gc* 44/12 mCO2- Mass of carbon dioxide generated by burning fuel mf - the mass of fuel burned gc – (kgC / kg fuel) ratio of the amount of carbon in the fuel 44 -molarna mass of carbon dioxide CO2 12- molar mass of carbon C

WtW CO2 emissions, for example, EKO 1 line

Type of bus Consumption Emission of CO2 (g/km) E-bus 1.155(kWh/km) 867.9 (g/km) Diesel 0,44 (L/ Km) 1157 (g/km)

E.bus achieves lower CO2 emissions by 33%, compared with a diesel bus

St.emiss.fact -751 t CO2/MWh Expected period of profitability of E-bus about 7 years

Diesel

E.bus Thank you!