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Project Guide: Mrs.D.S.Khadtare
Project by-Sagar DeokarSarjerao Desai
Piyush Kand
About Induction motor
Why speed control is necessary in induction motor?
Methods to achieve speed control
V/F speed control method
Introduction:
Characteristics of Induction Motor
AC to DC
Rectifier
DC
Link
Filter
MOSFET Based
Three Phase
Inverter
3 Phase
IM
DSPIC30F2010
(Pulse generator)
Driver Unit
Error signal VREF
VACT
Components of Block diagramAC to DC Rectifier Conversion of sinusoidal
input to DC input
DC link filter Filtered waveform is obtained
without any noise
MOSFET BASED 3 PHASE INVERTER
Inverter is used to convert DC to AC at any required voltage and frequency
MOSFET is used as a voltage controlled device
IGBT’s can also be used.
Components of Block diagramV Active and V Reference Forms a closed loop system.
Sends error signal to controller.Driver Unit Used to provide 9 to 20 volts to switch the
MOSFET Switches of the inverter . Driver unit consists of:
1.Optocoupler 2.Capacitor
3.Supply4.Diode
DSPIC30F2010 Controller Features16-bit MicrocontrollerProgram memoryRAM bytesOperating voltageI/O pinTimer
CONTROLLER CIRCUIT:-
Output: SimulationHardware
Tools used:Matlab /Simulink Simulink, is used frequently in creating and
running simulations and sometimes to do feedback control while in the development or early testing stages.
OUTPUT & TOOLS:-
Output & Tools:Orcade/Pspice personal simulation program with integrated
circuit used for electronic design automation.
AC Induction motors are used in many industrial applications such as. • Appliances (washers, blowers, refrigerators,
fans, vacuum cleaners, compressors• HVAC (heating, ventilation and air
conditioning}• Industrial drives (motion control, centrifugal
pumps, and robotics)• Automotive control (electric vehicles)
APPLICATIONS:
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