Week - 4

1.Prepare a table which includes materials & chemical reactions occurring at the anode and cathode of LCO, LMO, NCA, NMC, LFP and LTO type of lithium ion cells.Give your detailed explanation on it.    A number of Targray Cathode active materials, including our Nickel Manganese Cobalt (NMC 622, NMC 811, NMC…

Power Controller: This subsytem is of prime importamce in electric powertrains. The controller does the main work of limiting and providing the required voltage. The system uses an HBridge block, controlled PWM voltage block, two controlled voltage source blocks for acceleration and deceleration(braking). This is because…

2. Is there any difference between ground speed and airspeed?  Answer:- 1. The aircraft usually operates inland as well as in air and so we need to study their speed difference in-ground and in air  2. The ground speed and the airspeed usually change based on the wind component. 3.If we consider that there is…

2. Why electric motor can’t develop braking torque at high speed similar to starting? How electric and mechanical brakes are coordinated?  Answer :-   A electric motor  requires a   high current at starting to  make a motor run  which         produces…

1. Run MATLAB demo ‘Speed control of a DC motor using BJT H-bridge’. Modify the model such that armature current doesn’t shoot up when motor changes direction from forward to reverse.   Speed Control of a DC Motor Using BJT H-Bridge     This example shows the simulation of an H-bridge used…

  1. Which types of power converter circuits are employed in an electric and hybrid electric vehicle?    With the increasing interests in energy efficiency, energy cost, and environmental protection, the development of electric vehicles (EVs) technology has been obvious nowadays. Based on the air…

1. What is the difference between mapped and dynamic model of engine, motor and generator? How can you change model type?    mapped model:-  A.  The mapped model is one type in which the values are pre defined in look up table. B. in this method, it generates output as defined previously without considering…

  1.   For EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, can the vehicle travel for 45 km with FTP drive cycle? Conclude your observations.           2.   In the above case, try changing the battery capacity and repeat the simulation.  …

Implement control logic of a “washing machine” using Stateflow as per given sequence:  If the power supply is available, the system gets activated  If the Water supply is not available, stop the process & indicate through LED Soaking time should be 200s followed by Washing time of 100s. Then rinsing…

Make a Simulink model of Doorbell using solenoid block with the following details:   Theory : - 1.  Electro magnetic induction principle is very versitle to understand the concept of with out primary and secondary connection how we can transfer electric energy like in transformer.      …