The overall project mainly focuses on the development of light weight electric vehicles (EVs) using brushless DC motor. In this project, each and every characteristic including the working principle of the electrical vehicle will be studied. The scope in this project covers battery management system
Light Weight Electric Vehical
The overall project mainly focuses on the development of light weight electric vehicles (EVs) using brushless DC motor. In this project, each and every characteristic including the working principle of the electrical vehicle will be studied. The scope in this project covers battery management system, converters and controllers, motor characteristics and selection, braking and gearing system. However, the battery power management system and controller including converters will be examined and discussed.
? Development of light weight electric vehicles (EVs) using brushless DC motor.
? Connecting battery to the traditional motorcycle.
? Optimize charger to charge the battery.
? Arduino for displaying speed battery level and kilometers on the display.
In choosing any motor for electric bicycle, which is Brushless DC motor (BLDC), there is few methods will be used, the method is torque calculation, Losses, Efficiency. Before using any motor for Electric Bicycle, torque calculation is necessaryto be considering, this is because each motor has its own torque limit for the motor to hold certain load. If a motor were used without calculating its torque or how much torque can the motor provide amount of torque to the electric bicycle. If the motor has low or insufficient amount of torque, this can lead to Electric Bicycle not even move or maybe can move but only without any load or rider. This is why Torque Calculation is important when choosing suitable motor for Electric Bicycle. For this section, only formula will be stated.The peak torque or also called maximum torque is required for the application, it can be calculated by summing the load torque (????????), torque due toinertia (????????) and the torque need to overcome the friction (????????). The torque due to inertia (????) is the torque that required accelerating the load from rest or from lower speed to higher speed. This can be calculated by using the product of load inertia, with the rotor inertia and load acceleration. The torque can be roughly translated to the average continuous torque required for the application. This value depends on several factors. The peak torque (????????), load torque (????????), torque due to inertia (????????), frictional torque (????????) and acceleration, deceleration and run times. Speed range is the limit or speed that needed to drive or run the application and is determined by the type of application. High operating speed can be accounted for the components of trapezoidal speed curve, it give an average speed equal to the movement speed.
This project is proposed in order to design the electric motorcycle that use for the travelling and can be used in long distance. The designing of the electric motorcycle included of the light frame design, and brushless DC motor design. The traditional motorcycle included bulky frame and depended on fossil fuels. Research and analysis for the motor is needed because it one of the main components of the electric motorcycle in order to move. The limit of the motor that would be used in the project also must be noted, because it will tell how much the load or speed the motor can with stand when heavy duty task are applied on the electric motorcycle. The torque of the shaft also must be calculated which will be used as the reference of the motor speed. The type of brushless DC motor that will be used for the electric motorcycle is one of the important thing or elements that can influence the speed. Besides that, type of motor that will be used is also important in selection of power supply. This is because each motor has its own specific power or voltage that the motor used. Even the same type of motor, its power usage still has differences because of it differences in specification.
First we have a techo sensor which fit on tire which give us rpm. Which techo sensor we connect a f/v converter for converting frequency to voltage and voltage give to arduino which is programmed to to give output on lcd which show rpm ,speed and distance covered.
Then we have a variable( accelator) used for varations of vehicle and with variable there is motor controller,motor driver and at last dc motor(gear motor).
Motor controller control motor driver and motor driver control dc motor.
And for backup we use battery,dynamo and solar panels.
With solar we connect a charge controller and direct connected to battery.
Dynamo also connect to battery which we use very rare. Charge also show on lcd.
| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Battery | Equipment | 1 | 7500 | 7500 |
| cycle | Equipment | 1 | 15000 | 15000 |
| motor | Equipment | 1 | 8000 | 8000 |
| deicver | Equipment | 1 | 7000 | 7000 |
| arduino | Equipment | 2 | 800 | 1600 |
| Mechanical | Miscellaneous | 1 | 10000 | 10000 |
| LCD | Equipment | 1 | 400 | 400 |
| Tecno Sensor | Equipment | 1 | 1000 | 1000 |
| wires | Equipment | 50 | 50 | 2500 |
| Buck Converter | Equipment | 1 | 1000 | 1000 |
| Solar | Equipment | 1 | 8000 | 8000 |
| Total in (Rs) | 62000 |
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