DocumentCode :
3666618
Title :
Design and manufacturing of digital MOSFET based-AVR for synchronous generator
Author :
Irfan A. Khan;Yinliang Xu;Bilal Tahir
Author_Institution :
Sun Yat-Sen University and Carnegie Mellon University (SYSU-CMU) Joint Institute of Engineering, Sun Yat-sen University, Guangzhou, 510275, and SYSU-CMU Shunde International Joint Research Institute, Foshan, 528300 China
fYear :
2015
fDate :
6/1/2015 12:00:00 AM
Firstpage :
217
Lastpage :
222
Abstract :
Automatic voltage regulator is designed to keep the terminal voltage of the generator constant, regardless of all disturbances. It is done so by controlling field current of synchronous generator which is directly related to terminal voltage. Peak detector circuit detects the peak voltage of generator terminal sinusoidal voltage. This peak voltage is then converted to binary code by ADC0804 IC. After that, the binary code is processed by AT89S52 microcontroller. This microcontroller is used to generate PWM according to the peak voltage sensed by Peak detector. If the terminal voltage is higher than desired set point, the PWM duty cycle decreases; if terminal voltage is lower than desired set point, the PWM duty cycle increases. PWM signal is fed to IRF740 MOSFET gate terminal. This PWM gate signal hence increases or decreases the field current of generator which in return, increases or decreases terminal voltage. The designed close loop feedback system ensures the stable output voltage that is necessary for sensitive load. This control strategy can be implemented in an islanded micro grid with renewable energy sources for a regulated output voltage, irrespective of the intermittencies of the renewable energy sources like wind and solar.
Keywords :
"Generators","Microcontrollers","Pulse width modulation","Voltage control","Detectors","MOSFET","Power supplies"
Publisher :
ieee
Conference_Titel :
Cyber Technology in Automation, Control, and Intelligent Systems (CYBER), 2015 IEEE International Conference on
Print_ISBN :
978-1-4799-8728-3
Type :
conf
DOI :
10.1109/CYBER.2015.7287938
Filename :
7287938
Link To Document :
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