CHOPPER DRIVE FOR DC MOTOR WITH             SOFT STARTOBJECTIVE:         The aim of the project is to develop a speed cont...
Block Diagram            Rectifier            Chopper                        Soft Start Switch  Forward and  Reverse Contr...
Block Diagram            Rectifier            Chopper                        Soft Start Switch  Forward and  Reverse Contr...
Block Diagram            Rectifier            Chopper                        Soft Start Switch  Forward and  Reverse Contr...
Block Diagram            Rectifier            Chopper                        Soft Start Switch  Forward and  Reverse Contr...
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ELECTRICAL PROJECTS ABSTRACT:Chopper drive for dc motor with soft start

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DEAR STUDENTS,

IEEE BASED EMBEDDED SYSTEM PROJECTS(hardware projects)/FINAL YEAR PROJECTS/MINI PROJECTS/DIPLOMA PROJECTS

INPLANT TRAINING DETAILS, (ECE/EEE/E&I/CSE/BIOMEDICAL/IT/MECHATRONICS/AYTOMOBILES)&MSC ELECTRONICS..

dont hesitate, pl call me..........

thanks
R.ASHOK KUMAR
MAASTECH
89. RANGARAJAPURAM MAIN ROAD(NEAR SBI BANK)
KODAMBAKKAM
CHENNAI-600024

PH:044-24844676
ASHOK KUMAR-098402 34766

ipt/projects full details....PL VISIT http://www.maastechindia.com (projects list,abstract,video,photo gallery)

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ELECTRICAL PROJECTS ABSTRACT:Chopper drive for dc motor with soft start

  1. 1. CHOPPER DRIVE FOR DC MOTOR WITH SOFT STARTOBJECTIVE: The aim of the project is to develop a speed control system for DC motorusing four-quadrant chopper using four-quadrant chopper it is possible todemonstrate forward and reverse motoring and braking.PRINCIPLES: The speed of DC motor is directly to armature voltage and inverselyproportional to flux. by maintaining the flux constant, the speed can be varied bythe armature voltage. The direction of rotation is reversed by reversing either fieldor armature voltage.SYSTEM DESCRIPTION: The functional block diagram of four-quadrant chopper drive dc motor isshown in fig.1. The system consists of uncontrolled rectifier for converting ac to dc. thenthe supply is varied using chopper to provide variable dc supply for armature of dcmotor . the field is excited directly by the dc supply from un controlled rectifier. The system also senses armature current to provide over load protection,field current to provide field failure protection and supply current to provide no-volt protection during any one of the above abnormal conditions the firing pulsesthe firing pulses are inhibited to stop the supply of armature.FEACTURES:1.The DC motor can directly run from AC machines.2.no need of extra starter and rectifier3forward and reverse motoring , braking4.constant speed and variable torque and variable speed operation5.softstart (i.e, starting the motor without allowing the armature current to exceedthe full load current)6.over-load protection no-volt protection and field failure protection.
  2. 2. Block Diagram Rectifier Chopper Soft Start Switch Forward and Reverse Control PIC Microcontroller PWM Field Armature Current Current CT CT FIELD ARMATURE
  3. 3. Block Diagram Rectifier Chopper Soft Start Switch Forward and Reverse Control PIC Microcontroller PWM Field Armature Current Current CT CT FIELD ARMATURE
  4. 4. Block Diagram Rectifier Chopper Soft Start Switch Forward and Reverse Control PIC Microcontroller PWM Field Armature Current Current CT CT FIELD ARMATURE
  5. 5. Block Diagram Rectifier Chopper Soft Start Switch Forward and Reverse Control PIC Microcontroller PWM Field Armature Current Current CT CT FIELD ARMATURE

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