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Technical University of Iasi - Fac. Automatic and Computers
Embedded Computer 		Monday, 4 Feb., 119
Time 14:30
CW_picture
Laboratory work no. 8
  • L8.1 Name:


    • Control of traction motors for electric vehicles



  • L8.2 Overview, purpose.

    • The work of the laboratory aims to explore a way of achieving electric vehicles by using brushless DC motors. It looks at the dsPIC DSC interfaces to power motors and speed control techniques.


  • L8.3 Resources:


    • Expansion system with dsPIC, MOSFET extensions for DC motor, auto battery, potentiometer.


  • L8.4 Program example:


    • Prototype program


  • L8.5 Experiment Run / Tracking Mode:

    • - Analyzing how to make the MOSFET interface for DC control;
    - Connects the MOSFET interface to the development system;
    - Running the prototype program by visualizing with the oscilloscope the signal obtained at the insertion of the optocoupler;


    - Connect the motor and power supply
    - Monitor the motor response to potentiometer operation
    - Solve prototype problems;


  • L8.6 Proposed Issues:


    • 1. Make a program sequence that will allow generation of a 25 millisecond signal and a 30% fill factor.

    2. For the previous program, visualize with the oscilloscope the influence of the control signal on the power supply.

    3. Make a program sequence that controls the engine speed from minimum to maximum via the potentiometer.

    4. Make a program that will allow the engine to be locked in the closed loop so that the rpm is kept constant.

    5. Make a program that will allow you to determine the optimal time for the PWM signal.



  • L8.7 The Expert may be extended to:
    		•

    - Making electric bikes.
    - Making electric scooters.
    - Establishment of transport systems for disabled people.
    - Realizing force-holders in e-vehicles.



  • L8.8 Documentary references: