Microcontroller based PWM UPS

(1992) Microcontroller based PWM UPS. Masters thesis, King Fahd University of Petroleum and Minerals.


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English Abstract

The thesis describes the simulation and implementation of a microcontroller based single phase pulse width modulated uninterruptible power system employing ultrasonic switching frequencies. VDMOS transistors have been used as switching elements. PSPICE model for a VDMOS has been developed and added to the library. A unique method for the simulation of regular sampled PWM and digital feedback has been tried. The use of microcontroller in the UPS makes it more flexible and consistent. Ultrasonic carrier frequencies are employed, this reduces the size of the filter elements. Input transformer is eliminated by the use of doubler and chopper section. High voltage battery eliminates the need for a step up output transormer. This makes the overall design compact, efficient and reliable. Digital simulation of the complete UPS circuit has been performed. Laboratory implementation has been carried out and the results are presented.

Item Type: Thesis (Masters)
Subjects: Electrical
Department: College of Engineering and Physics > Electrical Engineering
Committee Advisor: El-Amin, Ibrahim M.
Committee Members: Al-Ali, Abdul Rahman K. and Beckhoff, Gerhard F.
Depositing User: Mr. Admin Admin
Date Deposited: 22 Jun 2008 14:01
Last Modified: 01 Nov 2019 13:59
URI: https://eprints.kfupm.edu.sa/id/eprint/10279