2. A 1500 kg electric vehicle travels along an asphalt roadway with a 5° grade at 100 km/h anda rolling resistance coefficient of 0.013. The frontal area is 2.05 m² and a drag coefficient is0.32. The battery capacity is 85kWh and the battery nominal voltage is 320V. The air densityof 1.2 kg/m3.(a) What is the power required to propel this vehicle?(b) The gear ratio is 10.7, the tire radius is 0.23m. Assume 100% efficiency for the gear. (i)What is the torque seen by the ac propulsion motor (ii) What is the power and speed ofthe motor?(c) What is the range of the vehicle considering 80% Depth of Discharge on a flat road at aspeed of 50 km/h?3. In the system of problem 2, the propulsion motor used is a star connected interior permanentmagnet motor fed by a three phase IGBT inverter. The motor is operated in direct torquecontrolled mode. The inverter output voltage is 414V(L-L) and the modulation index is 0.9.The motor efficiency is 98% and power factor is 0.78. The dc link capacitor value is 5000uF.Assume space vector PWM strategy for the inverter. The efficiency of each power converterstage is 97%.(a) Draw a complete power converter circuit of the system (including devices) showing thevalues of voltage, current, and power at the battery output, inverter input, and inverteroutput. Consider the motor power obtained from problem 2(b).(b) Draw a vectored control system for controlling the torque of the motor(c) Express the motor currents in stationary reference frame.(d) Calculate the currents in synchronously rotating reference frame at angular differences of0, 60°, and 90⁰(e) For the 60° angle in 2 (d), convert the d,q currents directly to currents in a, b, c frame?

Answered: Image /qna-images/answer/b3e2a5e8-6812-4a1b-8324-74e1bb6235b0.jpg

A 1500 kg electric vehicle travels along an asphalt roadway with a 5° grade at 100 km/h and a rolling resistance coefficient of 0.013. The frontal area is 2.05 m² and a drag coefficient is 0.32. The battery capacity is 85kWh and the battery nominal voltage is 320V. The air density of 1.2 kg/m3. (a) What is the power required to propel this vehicle? (b) The gear ratio is 10.7, the tire radius is 0.23m. Assume 100% efficiency for the gear. (i) What is the torque seen by the ac propulsion motor (ii) What is the power and speed of the motor? (c) What is the range of the vehicle considering 80% Depth of Discharge on a flat road at a speed of 50 km/h?

A 1500 kg electric vehicle travels along an asphalt roadway with a 5° grade at 100 km/h and a rolling resistance coefficient of 0.013. The frontal area is 2.05 m² and a drag coefficient is 0.32. The battery capacity is 85kWh and the battery nominal voltage is 320V. The air density of 1.2 kg/m3. (a) What is the power required to propel this vehicle? (b) The gear ratio is 10.7, the tire radius is 0.23m. Assume 100% efficiency for the gear. (i) What is the torque seen by the ac propulsion motor (ii) What is the power and speed of the motor? (c) What is the range of the vehicle considering 80% Depth of Discharge on a flat road at a speed of 50 km/h?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

What is the formula and variables in finding the air drag of a motorcycle?
A 0.25 kg kite with an area of 0.65 mitres squared flies in a 25 km/h wind such that the weightless string makes an angle of 40° relative to the horizontal.The density of air is 1.22 kg/m^3.if the pull on string is 7 N.determine the lift and drag coefficient basee on the kite area
Question 1 (a) Calculate the frontal area of a parachute of hemi-spherical shape which will allow a parachute jumper of weight 70kg to descend with a steady velocity of 5 m/s ignoring air movement. The drag coefficient of parachute as determined from experiments is 1.5. Take the density of air as 1.2 kg/m3.
An airplane tows a banner that is b = 0.9 m tall and l = 22.2 m long at a speed of 169 km/hr. (a) If the drag coefficient based on the area bl is Cp = 0.06 estimate the power required to tow the banner. (b) Estimate the power required if the airplane was instead able to tow a rigid flat plate of the same size. (a) Your answer is partially correct. (b) i 76.2 6.35 kW kW
Two steel spheres of diameters d, and d₂ where d₂ = 2d₁, are dropped from rest at the free surface of a deep well. If their drag coefficients are independent of Reynolds number, the ratio of their terminal velocities, V₁/V₂ is
Q1/ Boeing 737 - 60 flies at altitude 15000m above sea level with speed 85 m/s and total drag coefficient equal to ( 5) . Find the drag force at this fly condition. Given data IR=287,g=9.81 m/s2 , rho O=0.3648 kg/m2 and wing area = 120m^ ^ 2^ *
3.) Automotive engineers work very hard to improve the value of the drag coefficient for cars. Suppose you have a car with a mass of 3000. kg and an effective surface area of 4.00 m^2. The engine can generate a maximum force of 28,000. N. Let the coefficient of kinetic friction be 0.200, and the coefficient of static friction be 0.400. Air has a density of 1.21 kg/m^3. (back on earth) (3a) Draw a free-body diagram for your car, including both drag and friction, when the car is moving at its maximum velocity. (3b) If the maximum value of your car's velocity is 150.0 m/s, then what is the drag coefficient for the car? (3c) Suppose your engineers change the drag coefficient to 0.300 - what would be your maximum velocity then with the same force from your engine.
The car shown in the figure below moves at a constant speed on a highway and has a drag coefficient Cpc of 0.32 with the windows and roof closed. What is the percent increase of horsepower needed to maintain the speed if the windows and roof are then opened? With the windows and roof open, the drag coefficient increases to Cpo = 0.43. Assume the frontal area remains the same. Windows and roof closed: CD=CDc Windows open; roof open: C₂=CDo
The drag equation for the Gofaster 172 is: D = 0.0003v2A. D is drag in pounds; v is airspeed in feet/second; and A is aircraft frontal area in square feet. At maximum airspeed, D = 140 lbs. How much does max airspeed INCREASE if the fuselage is narrowed such that frontal area A is reduced from 16 ft2 to 14 ft2? Give the answer in ft/sec AND mph. drag is 140 lbs. at maximum airspeed, regardless of frontal area. the question is: what is the INCREASE in max airspeed, not what is the max airspeed.
solve ut
Answer ASAP would be appreciated
Please Aspa