#11 Braking

Aim: To create a model to identify the direction of vehicle by reading the road signs using camera sensor. An indication will be given to the driver if the vehicle_Turn_status and the Camera_RoadSign is different otherwise if both are matching then the driver can keep on going. Model Explanation: We have two requirements…

Aim: To create model for given flowchart The logic for the above flow chart is created in Simulink, the top level model is attached below The power demand is given as a input signal from the signal builder block. To separate the power demand which is less than Min_FC_power, a switch block is used with threshold as Min_FC_Power…

Aim: To model the EMS with battery, fuel cell and Ultracapacitor for the positive power. The top level model is A signal builder block is used to provide the power demand for the EMS. The SOC of the Battery and ultracapacitor is provided by using constant block. First step is to sort positive and negative power demand…

Aim: To crate a ultrcapacitor model in which the input will be given as power demand from the EMS and outputs are Ultracapacitor Voltage, Current and SOC. The top level ultracapacitor model is The ultracapcittor model consisting of the SOC and current calculation block as shown below. The current calculation block gives…

Introduction The first step in vehicle performance modelling is to produce an equation for the tractive effort. This is the force propelling the vehicle forward, transmitted to the ground through the drive wheels. Consider a vehicle of mass m, proceeding at a velocity v, up a slope of angle ψ, as in below figure.  …

Question 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?  False. In the above scenario in which an aggressive driver is accelerating very rapidly, more power(peak…

Aim : To design a battery pack of capacity 18kWh using ANR26650m1-B cell.   The above picture shows the ANR26650m1-B cell from different manufacturers. Cell Chemistry of ANR26650m1-B: Its a high performance Nanophosphate lithium iron phosphate(LiFePO4) battery technology delivers high power and energy density…

Question 1:Compare four different types of fuel cells and state their applications. Types of Fuel Cells Proton Exchange Membrane Fuel Cell The proton exchange membrane fuel cell is unusual in that its electrolyte consists of a layer of solid polymer which allows protons to be transmitted from one face to the other. It…

1.For a defined driving cycle, calculate the energy required for braking.  clear all close all clc load Myowndrivecycle.txt % to load my drive cycle time = Myowndrivecycle (:,1); Speed = Myowndrivecycle (:,2); figure(1) plot (time,Speed) % to plot the given drive cycle title ('DriveCycle') % title for the graph hold…

Question Why power electronics circuits are efficient? In practice, which types of losses occur in power electronics circuits?     A. Develop a Simulink model for generating pulses for a simple power converter circuit?  (Hint: Blocks : sine wave,carrier wave,relationaloperator,scope)     …

Question Discuss about the equivalent circuit network of induction motor MATLAB model. 3 phase, 50 Hz induction motor, represented by equivalent circuit constants X1 = X2 = 0.1 ohm and R1 = R2 = 0.2 ohm is operated at half of rated voltage and frequency. Calculate the ratio of starting torque at half voltage & frequency…

Question 1. How induction motor operation is similar to the clutch?  2. Calculate the starting time of a drive with the following parameters:               J=10 kg-m2,                T = 15 + 0.5wm            …

Question 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…

Question 1.  Which types of power converter circuits are employed in electric and hybrid electric vehicle?    2.  An Electric Vehicle's powertrain with 72V battery pack in shown in the diagram below. The duty ratio for acceleration operation is 'd1' and for the braking operation the duty ratio…

Question Implement DC machine torque speed characteristics equations in MATLAB script file. It asks user to input data and plots speed (RPM) versus torque (Nm). Submit the .m file for evaluation and attach the screenshots of all the required plots. How can you distinguish between power cables and signal cables and also…

Question What is the difference between mapped and dynamic model of engine, motor and generator? How can you change 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 wind velocity…

Use ADVISOR tool and simulate the following    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…

Question 1.   What is the ratio of hill-climbing power required by fully loaded tata ultra truck to the half-loaded one?    2.    A flyover is planned to be constructed on a national highway. Keeping in mind about the gradeability for trucks, how much can be the minimum length of the flyover,…

Question 1. What should be the maximum speed of the motor used in an electric scooter capable to run at 90 kmph, if the fixed gear ratio is 7 and tire size is 90/100 R10 53J? Assume the following arrangement from motor to wheel. Refer to below image to read a tire. Recalculate the same value if tire code is 90/90 R18 51P.…

Compare the battery capacity and related performance of any three recent Battery powered EV (BEV) (Hint: figures,model name ,capacity,future scope) Your Answers The most common eletric vehicle from different manufacturer and its performance is dhown below Model Drive Battery(kWh) EPARange 0-60mph(sec) TopSpeed 2021 Audi…

1)Prepare a report summarizing thermal management techniques for electric car battery pack To operate an electric vehicle with a particularly high level of efficiency, it is necessary to maintain an optimal temperature range for the battery and other electronic systems. This requires a sophisticated thermal management…

Question 1. How weakest cell limits the usable capacity of the battery pack?  2. Explain the cell balancing techiniques with relevant figures. Your Answers How weakest cell limits the usable capacity of the battery pack?  consider a four cells with different state of charge are in series/parallel to power our…

Question   https://in.mathworks.com/matlabcentral/fileexchange/72865-design-and-test-lithium-ion-battery-management-algorithms 1.Simulate the 3 test cases from harness dashboard and write a detailed report on the results 2.What is coulomb counting? Refer to the above model and explain how BMS implements coulomb counting…

Question 1.Build a battery pack with 3S4P configuration with generic battery block   a.Configure the batteries as per a  Lithium ion battery datasheet b.Explain your parameters c.Simulate the model and comment on the results for SOC,voltage ,current in detail d.Change the configuration to 4S3P and simulate the…

Fuel Cell: A fuel cell uses the chemical energy of hydrogen or other fuels to cleanly and efficiently produce electricity. If hydrogen is the fuel, the only products are electricity, water, and heat. Fuel cells are unique in terms of the variety of their potential applications; they can use a wide range of fuels and feedstocks…

1)Aim: To configure a battery model in MATLAB from a datasheet of lithium ion battery. Block Used in the model:   The Battery block implements a generic dynamic model that represents most popular types of rechargeable batteries. The reference data of ANR26650 battery from A123systems is used.    …

Aim: To create the mathematical model for a lead acid battery and compare the results. Introduction: The secondary battery is such a battery where electrical energy can be stored as chemical energy and this chemical energy is then converted to electrical energy as and when required. The conversion of electrical energy…

1) What is the difference between nominal voltage and maximum voltage? Nominal voltage: what the voltage of any particular battery is called (not necessarily exactly what it is). In otherterms the Voltage of a fully charged cell or battery when delivering rated capacity at a…

1)Objective: To 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 Fundamental Science in Li-ion Battery MaterialsAmong the rechargeable batteries, Li-ion batteries have…