What is the need and importance of electric and hybrid electric vehicles?
[3 marks]With the help of a neat block diagram explain different subsystems of electric drive train.
[4 marks]Derive equations & explain different types of forces acting on vehicle going uphill with neat diagram.
[7 marks]Compare hybrid electric vehicles with conventional vehicles.
[3 marks]Write two merits and two demerits of electric vehicles.
[4 marks]Draw and explain architecture and power flow control of parallel hybrid electric drive train.
[7 marks](i)Compute aerodynamic drag, rolling resistance & gradient force for the following vehicle assuming ρ=1.2 kg/m3 & θ = 8º. Gross vehicle weight = 1500 kg, C =0.3, Area = 2.5 m2, D µ=0.015, v = 80 kmph, Tyre radius = 0.3 m. (ii) Also compute total traction force assuming pick-up from 0 to 50 kmph in 20 sec, with linear acceleration & zero slope.
[7 marks]What is plug-in HEV? Explain with figure.
[3 marks]What is meant by (i) Series hybrid electric vehicle. (ii) Parallel hybrid electric vehicle.
[4 marks]Define the terms charge capacity, specific energy, energy density, specific power, charge efficiency, energy efficiency, Life cycle of battery.
[7 marks]Give comparisons of Hybrid Electric Vehicles and Conventional Vehicles
[3 marks]List the various components of HEV drive train. Mention the advantages of hybrid vehicles.
[4 marks]With neat diagram explain the construction and working of lead-acid battery.
[7 marks]Classify the electric motors drives for EV and HEV application.
[3 marks]List the optimization based strategies in Hybrid Electrical Vehicles?
[4 marks]Explain the basic principle of Super Capacitors based Energy Storage System in Hybrid Electric Vehicles?
[7 marks]What is the advantage of AC motor over DC motors for EV applications?
[3 marks]Give a classification of different energy management strategies.
[4 marks]Explain the fuel cell and flywheel as energy source elements in electric and Hybrid electric vehicles.1
[7 marks]List the various components of HEV drive train.
[3 marks]Briefly explain construction and working of Switched Reluctance Motor.
[4 marks]Discuss various electric drive train topologies.
[7 marks]Which types of qualities are required in electric motors for EV application?
[3 marks]Draw only torque-speed characteristics of following motors. (1) DC Shunt Motor (2) Permanent Magnet Synchronous Motor (PMSM) (3) Switched Reluctance Motor (SRM) (4) Permanent Magnet Brushless DC Motor (PMBLDC).
[4 marks]Explain the two-quadrant operation of chopper DC motor drive with suitable waveforms for electric vehicle.
[7 marks]