Final Project: Electric Rickshaw modelling

FINAL PROJECT:

DESIGN OF AN ELECTRIC RICKSHAW MODEL:

SIMULINK MODEL:

• The model of an electric rickshaw
• 
• The drive cycle subsystem
• 
• The lithium-ion battery subsystem
• 
• The motor drive subsystem
• 
• The vehicle body subsystem
• 

REPORT:

• Three different type of drive cycle used to analyse the electric rickshaw model
• The FTP75 drive cycle parameters choosen as follows
• 
• The NYCC drive cycle parameters choosen as follows
• 
• The WOT drive cycle parameters choosen as follows
• 
• Three drive cycle connected to a multiport switch and output connected to reference speed input of driver block
• Switching between drive cycles can be obtained by selecting selection switch accordingly
• The longitudinal driver block parameters choosen as follows
• 
• The final speed output of the model is feeded back to the longitudinaldriver block
• The output of driver block is acceleration command and decceleration command
• The acceleration command given to the PWM generator through controllled voltage source
• The PWM voltage block parameters choosen as follows
• 
• The decceleration command of driver block given to break port of H-bridge converter
• The H-bridge converter parameters choosen as follows
• 
• A temperature sensor connected inorder to read the temperature inside the converter
• The output of the converter is connected to the PM DC motor through a current sensor
• The PM brushed DC motor parameters choosen as follows
• 
• A temperature sensor connected to read the temperature of motor while operation
• The mechanical output of motor given tothe gear system
• The current sensor output given to battery through a current controlled source
• The battery used in the model is li-ion type ,and its parameters are
• 
• The battery SOC,current and energy conumption obtained and plotted in scope
• The mechanical output from the motor connected to simple gear block
• 
• The gear output given tothe rear wheel axle of the rickshaw
• A three wheel configuration choosed to represent a rickhaw
• The wheel block parameters choosen as
• 
• The force to wheels provided by the vehicle body block and hub port connnected to hub port of all three wheels
• The vehicle body parameters choosen as follows
• 
• The output of vehicle bodyis velocity which converted to km/h and feeded back to driver block
• The distance travelled by the vehicle is calculated as
• 
• All outputs and results displayed and plotted using scope block
• 
• The model simulated for three drive cycles and the results plotted
• Assumed parameters in the model is shown below
• 

RESULTS:

• The vehicle performance in three different driving cycles isshown below
• DRIVE CYCLE FTP75:
• The FTP75 drive cycle is shown below
• 
• The vehicle speed performance is shown below
• 
• Graph 1:The speed of the vehicle with respect to the reference speed ,its observed that vehicle tracking the reference speed well
• Graph 2:The distance travelled by the vehicle for given drive cycle,It oberved the distance is around 5km
• The battery performance ishown below
• 
• Graph 1:The SOC of battery.Its observed that 99% of charge remains in the battery after the executing thedrive cycle
• Graph 2:The motor current ,The polarity of current changes according to acceleration and decceleration command
• Graph 3:The energy consumption,its observed that forthe given drive cycle 63Wh energy consumed
• The temperature rise in the ystem is shown below
• 
• Graph 1:The temperature in converter ,its observed that the temperature steadily increasing upto 275C
• Graph 2:The temperature in motor,its observed that temperature steadily increasing upto 301C
• Summary of the vehicle performance with repect to this drive cycle is shown below
• 
• DRIVE CYCLE NYCC:
• The NYCC drive cycle is shown below
• 
• The vehicle speed performance is shown below
• 
• Graph 1:The speed of the vehicle with respect to the reference speed ,its observed that vehicle tracking the reference speed well
• Graph 2:The distance travelled by the vehicle for given drive cycle,It oberved the distance is around 0.5km
• The battery performance is shown below
• 
• Graph 1:The SOC of battery.Its observed that 99% of charge remains in the battery after the executing the drive cycle
• The regerative braking makes the battery charging ,when the vehicle decceleraitng
• Graph 2:The motor current ,The polarity of current changes according to acceleration and decceleration command
• Graph 3:The energy consumption,its observed that forthe given drive cycle 2.3Wh energy consumed
• The temperature rise in thesystem is shown below
• 
• Graph 1:The temperature in converter ,its observed that the temperature steadily increasing upto 273C
• Graph 2:The temperature in motor,its observed that temperature steadily increasing upto 274C
• Summary of the vehicle performance with repect to this drive cycle is shown below
• 
• DRIVE CYCLE WOT (45KMPH-100KM):
• The WOT drive cycle is shown below
• 
• The vehicle speed performance is shown below
• 
• Graph 1:The speed of the vehicle with respect to the reference speed ,its observed that vehicle tracking the reference speed well
• The vehicle moving with 45kmph speed for 100km
• Graph 2:The distance travelled by the vehicle for given drive cycle,It oberved the distance is around 100km
• The battery performance is shown below
• 
• Graph 1:The SOC of battery.Its observed that 62% of charge remains in the battery after the executing the drive cycle
• For a constant accelerating ,we can observe there is no regenerative acton in the battery
• Graph 2:The motor current ,The current almost constant for the constant speed of 45kmph
• Graph 3:The energy consumption,its observed that forthe given drive cycle 4040Wh energy consumed
• The temperature rise in the motor drive system is shopwn below
• 
• Graph 1:The temperature in converter ,its observed that the temperature steadily increasing upto 280C
• Graph 2:The temperature in motor,its observed that temperature steadily increasing upto 284C
• The summary ofvehicle performance is shown below
• 

CONCLUSION:

• Simulink model of an electric rickshaw is designed
• The model simlated for three different drive cycles and results were plotted
• The energy consumption ,temperature ofconverter and motor obtained for three driving cycles
• Its concluded that the model working and tracking all three driving cycles