FIELD CONTROLLED DC DRIVE USING MOSFET BASED CHOPPER CONTROL

Author’s Name :  R Venkatesh

Volume 04 Issue 02  Year 2017  ISSN No: 2349-2503  Page no: 18-19

Abstract:

DC Motor plays a vital role as drives in the Automation industries. The speed of the drives needs to be controlled according to its applications. Generally the speed control of DC motors is carried out in two ways namely Armature control and Field control methods. Armature control method is adopted while the speed of the drive is below rated speed and field control method for the above rated speed. The project is carried out to design and analyze the soft switching variable speed drive for 18W DC Shunt motor. Type of speed control used in proposed system is field current control and the type of speed drive is MOSFET based chopper. The duty cycle of the chopper drive is varied by PIC Microcontroller. Soft switching variable speed drive paves the way for modernization of speed control of DC motor. The proposed method of soft switch drive will provide fine variations of speed.

Keywords:

Chopper; PWM technique

References:

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