Week - 4

1. Consider a scenario where an aggressive driver is accelerating very rapidly and braking harshly in a city driving. Is battery better a choice to supply power than UC in this scenario? True False Why? Answer: False. In this scenario, battery is not a better choice in the given driving scenario.The drivers driving…

1. Compare four different types of fuel cells and state their applications. Answer:  The four types of fuel cells are: Polymer Electrolyte Membrane Fuel Cell (PEM) Alkaline Fuel Cell (AFC) Direct Methonol Fuel Cell (DMFC) Solid Oxide Fuel Cell (SOFC)   PEM AFC DMFC SOFC Power 0.01 - 250 0.1 - 50  0.001…

1. Explain the various applications of Power converters in an Electric vehicle. For Example what type of converter will you use for Horn which requires DC and less than 10V. Likewise come up with different applications. Application: Here are some examples of power converter applications in an electric vehicle: DC-DC Converter…

Create a detailed MATLAB model of an electric rickshaw (three wheel passenger vehicle) as per details below:  Rear wheels driven by PM brushed type motor Assume efficiency points of motor controller and motor Make an excel sheet of all input and assumed data  Results: For any three standard driving cycles show…

Obtain the transfer function of a mass spring damper system and use it in the model. Add a PID controller to adjust the force on mass so that its position follows a reference signal. Take m = 3.6; %kg k = 400; %N/m c = 100; %Ns/m The reference signal is shown in the following figure. Answer: The spring-mass-damper system…

In a laboratory experiment, data of voltage and current has been recorded and the same is attached in an excel file ( Click on this link VI.xlsx ). Read the excel file in the Matlab program and perform the interpolation in the range of -17.3:0.1:0.9. Generate the interactive plot for the interpolated data and…

1. Using MATLAB/simulink and  the drive cycle from the attached excel sheet, find- The max heat generation of the battery  The SOC of the battery at 2 *104second of the battery operation Time Time Step Battery Current 00:00.4 0.1 -0.9632 00:00.5 0.2 -0.952 00:00.6 0.3 -0.9072 00:00.7 0.4 -0.9632 00:00.8 0.5 -1.0304…

1. Design a battery pack for a car roughly 150 Kw with 120 V. Use 3500 mAh 3.6V nominal NMC chemistry cell.        a. Design the battery pack configuration.         b. Draw the BMS topology for this battery pack. Answer: Objective:  To design a battery pack for a car roughly 150 Kw with 120 V, to design the battery pack…

Modelling and Electric Car with Li-ion battery Objective: To create a MATLAB model of electric car which uses lithium ion battery and suitable motor. Suitable blocks from Simscape or Powertrain block set are to be used. Implement the vehicle speed control using PI controller and generate brake and accelerator commands.…

Create a MATLAB model of electric car which uses a battery and a DC motor. Choose suitable blocks from Powertrain block set. Prepare a report about your model including following: Objectives:         1. System level configurations        2. Model parameters      …

Part A: 1. Search and list out the total weight of various types of aircrafts.  2. Is there any difference between ground speed and air speed? 3. Why is it not recommended to use aircraft engine power to move it on the ground at Airport?  4. How an aircraft is pushed to runway when its ready to take off? 5. Learn…

1. For a defined driving cycle, calculate the energy required for braking. Answer: To calculate the energy required for braking, we need a drive cycle with different velocities at different time frames. Here we are considering a drive cycle for 80 secs. The mass of the vehicle is considered to be 1000kg. Below is the excel…

1. A. Explain a MATLAB demo model named ‘Speed control of a DC motor using BJT H-bridge’. Answer: H bridge: An H-bridge consist of 4 BJT-Diode pairs. It helps us to control the DC motor forward and backward, by switching the two transistors simultaneously. The configuration of H-bridge is in 'H'-Shape,…

1. Which types of power converter circuits are employed in electric and hybrid electric vehicle? Power converters are circuits which are used to convert one level of voltage to another level of voltage. They can convert AC to DC, DC to AC or DC to DC. Power converters have high handling capacity with high efficiency.…

1. What is the difference between mapped and dynamic model of engine, motor and generator? How can you change model type? The power train block set has two model of combustion engine: a. Mapped Engine b. Dynamic engine  Mapped engine is the inbuilt or default setting in the power train blockset. It represents the…

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. Answer: ADVISOR (Advanced Vehicle simulator) tool was developed by NREL in 1994. It is a set of model, data and script files for use with MATLAB…

1. Carry out a system level simulation of an all-terrain vehicle and Prepare tehnical report of Simulation explaining the model properties. Answer: Aim: To Prepare a detailed technical report on system-lvel simulation of an all-terrain vehicle explaining the model properties and comments on the results. An All-terrain…

1. To implement control logic of washing machine, with given sequence: If the power suplly is available system gets activated. If the water supply is not available, stope the process and indicate through LED. Soaking time should be 200 secs, followed by washing time of 100 secs. Then rinsing happens for next 20 secs and…

1. Simulink model of Doorbell using Solenoid. Objective : Plot the physical movement of the plunger in a situation where the switch is closed for every 2 seconds and then released. (Assuming an input signal with Amplitude = 1, Period = 10 seconds, Pulse width = 20%, Phase delay = 2 seconds) Working Principle of Doorbell…