Week 6 Challenge

Objectives of Challenge 11 Assignment: For a defined driving cycle, calculate the energy required for braking. Why electric motor can’t develop braking torque at a high speed similar to starting? How electric and mechanical brakes are coordinated?  Make a MATLAB program which plots the contour of given motor…

1. A. Explain a MATLAB demo model named 'Speed control of a DC motor using BJT H-bridge'.     B. Comment on the armature current shoot-up from the scope results.     C. Refer to the help section of 'The Four-Quadrant Chopper DC Drive (DC7) block'. Compare it with the H-bridge model. 2. Develop a 2-quadrant…

1. Which power converter circuits are employed in electric and hybrid electric vehicles?    2. An Electric Vehicle with a 72V battery pack is shown in the diagram below. The duty ratio for acceleration operation is 'd1', and the 'duty ratio is 'd2' for the braking operation.   Th' o'her parameters of…

OBJECTIVES: What is the difference between the mapped and dynamic engine, motor and generator models? How can you change the model type?  How does the model calculate miles per gallon? Which factors are considered to model fuel flow?  Run the HEV ReferenceApplication with WOT drive cycle. Change the grade and…

Use the ADVISOR tool and simulate the following:  For the EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, can the vehicle travel 45 km with an FTP drive cycle? Conclude your observations. In the above case, try changing the battery capacity and repeat the simulation. Perform gradeability…

Q) Simulate the 3 test cases from the harness dashboard and write a detailed report on the results?   ANS:  TEST CASE 1: Now we set the Test Sequence Variant to 1.   Now run the Simulink and plotted the graphs:     The principal diagram demonstrates the cell voltage of the relative multitude of…

Q) Prepare a table that 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? ANS:   HOW DOES A LITHIUM-ION BATTERY WORKS:   THE BASICS: A battery comprises an anode, cathode, separator, electrolyte,…

As discussed in Lecture 11, Project 2 deals with the development of a forward energy-based fuel consumption model of a P1 hybrid vehicle. This model is based on the conventional vehicle model from Project 1. The main goal of this project is to understand the functionality of a P1 hybrid and be able to model it. Honda Insight…

Q. Tabulate the fuel economy numbers (kmpl) for UDDS and HWFET cycle. This forms the baseline numbers for comparing with the future hybrid version. Plot the time trace for engine, transmission input, transmission output and wheel speed on one plot. Plot engine torque, engine power, fuel rate and fuel consumption using…

AIM: Carry out a system-level simulation of an all-terrain vehicle. Prepare a technical report explaining the model properties & comments on the results. Theory: All-terrain Vehicle: An all-terrain vehicle (ATV), also known as a light utility vehicle (LUV), a quad bike, or simply a quad, as defined by the American National…

AIM:  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 the LED. Soaking time should be 200s followed by Washing time…

AIM:  To make a Simulink model of Doorbell using solenoid block. To use a thermistor to sense the temperature of a heater & turn on or turn off the fan.     OBJECTIVE: To create a situation where the switch is closed for 2 seconds and then released. Observe the physical movement of the plunger. To sense…

AIM: To create material properties for tensin fitting geometry from aluminum alloy 7075-T7351 with E = 10e6 and nu = 0.33. Then create the loads, and boundary conditions Bolt load of 2500lbf (~11000N) applied at the main Bolthole. Use RBE2 (spider element) for applying the bolt load. Next Constraint…

Rankine Cycle Simulator Working Theory of a Rankine Cycle Simulator: The Rankine cycle or Rankine Vapor Cycle is the interaction broadly utilized by power plants, for example, coal-terminated power plants or atomic reactors. In this instrument, fuel is used to create heat inside a boiler, changing over water into steam…

Parsing NASA thermodynamic data and writing the function that extracts the 14 coefficients and calculates the enthalpy, entropy, and specific heats for all the species in the data file. To calculate the molecular weight of each species. Plot the Cp, Enthalpy, and Entropy for the local temperature range. Explanation…

In this challenge, I am optimizing the stalagmite function and finding the global maxima of the function: Giving the inputs for x and y as an array. Then creating a 2Dimensional mesh of the inputs. Next, I am generating the stalagmite function. Then, I am going to run the genetic algorithm 50 times. …

In this challenge, we are doing the second-order ODE using a simple pendulum as an example: We have assumed the initial condition for the simple pendulum. L=1 metre, m=1 kg, b=0.05, g=9.81 m/s2. The pendulum's motion is for 20 secs, and the initial angular displacement and initial angular velocity are 0 and 3 rad/s. So…