An electric car's energy consumption is measured in kilowatt-hours per 100 miles (kWh/100 miles). Based on...

 

Transcribed Image Text:

An electric car's energy consumption is measured in kilowatt-hours per 100 miles (kWh/100 miles). Based on the EPA Fuel Economy, 1 gallon of gasoline-33.7 kWh. Vehicle Chevy Bolt Tesla Model 3 Hyundai Ioniq Tesla Model Y Table 1: Electric Vehicle Energy Consumption Related Specs Energy Consumption (kWh/100mi) Charge Range on Full (Miles) 259 29 24 25 28 250 170 315 Cost of 25 miles drive $0.93 $0.78 $0.83 $0.91 Electric Motor/Battery (kW) 150 211 100 Dual 147/211 Battery Battery Voltage Charging (V) Time at 240V (Hr) 10 300 360 319.4 375 8.5 5.8 10 Average Cost $38,820 $39,990 $35,830 $60,990 Select your vehicle of choice from Table 1. (a) If your vehicle consumes 35 MWh over a 10-year ownership. Calculate the estimated mileage of your vehicle over 10 years. [5] (b) What is the cost of the mileage driven for your vehicle of choice? [5] (c) If 80% of the energy is consumed in the electromechanical energy conversion process, discuss the energy conversion in your vehicle using the modern electric motor drive model and explain what you think happened to the 20% of the energy consumed. [5] (d) The electric vehicles use 3-phase wye-connected AC motors. Assuming a balanced 3-phase power distribution and power factor of 0.9 lagging, calculate the current flowing in each power connector between the battery and electric motor terminals. State any additional assumptions in your calculations. [5] (e) Assuming maximum power output for your battery, can your vehicle's electric motors achieve 150hp output? If so, what is the estimated efficiency of your electrical to mechanical energy conversion? [5] (1) If you compared your electric vehicle to a gasoline engine vehicle, how many gallons will be required for a vehicle averaging 30 miles/gallon? How much equivalent MWh will the gasoline vehicle consume? [5] An electric car's energy consumption is measured in kilowatt-hours per 100 miles (kWh/100 miles). Based on the EPA Fuel Economy, 1 gallon of gasoline-33.7 kWh. Vehicle Chevy Bolt Tesla Model 3 Hyundai Ioniq Tesla Model Y Table 1: Electric Vehicle Energy Consumption Related Specs Energy Consumption (kWh/100mi) Charge Range on Full (Miles) 259 29 24 25 28 250 170 315 Cost of 25 miles drive $0.93 $0.78 $0.83 $0.91 Electric Motor/Battery (kW) 150 211 100 Dual 147/211 Battery Battery Voltage Charging (V) Time at 240V (Hr) 10 300 360 319.4 375 8.5 5.8 10 Average Cost $38,820 $39,990 $35,830 $60,990 Select your vehicle of choice from Table 1. (a) If your vehicle consumes 35 MWh over a 10-year ownership. Calculate the estimated mileage of your vehicle over 10 years. [5] (b) What is the cost of the mileage driven for your vehicle of choice? [5] (c) If 80% of the energy is consumed in the electromechanical energy conversion process, discuss the energy conversion in your vehicle using the modern electric motor drive model and explain what you think happened to the 20% of the energy consumed. [5] (d) The electric vehicles use 3-phase wye-connected AC motors. Assuming a balanced 3-phase power distribution and power factor of 0.9 lagging, calculate the current flowing in each power connector between the battery and electric motor terminals. State any additional assumptions in your calculations. [5] (e) Assuming maximum power output for your battery, can your vehicle's electric motors achieve 150hp output? If so, what is the estimated efficiency of your electrical to mechanical energy conversion? [5] (1) If you compared your electric vehicle to a gasoline engine vehicle, how many gallons will be required for a vehicle averaging 30 miles/gallon? How much equivalent MWh will the gasoline vehicle consume? [5]