Microcontroller based design of rectifier for chemical surface treatment

The purpose of this paper is to design a controlled IGBT rectifier which produces a pure DC current used in chemical surface treatment of metal. During the chemical treatment process, the load resistance is changing continuously. To maintain the current fixed at an appropriate value, a feedback sign...

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Published in2015 International Conference on Computing, Control, Networking, Electronics and Embedded Systems Engineering (ICCNEEE) pp. 162 - 167
Main Authors Ahmed, Abdelrahman A. A., Omer, Elfaki E. E., Ahmed, Abdallah M. E., Elnazir, Adam A. H., Elnazir Adam, A. H.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2015
Subjects
chemical treatment
Frequency modulation
Generators
IGBT rectifier
Insulated gate bipolar transistors
Logic gates
Monitoring
PIC16F877A
Pulse width modulation
pulse width modulation (PWM)
Switches
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Summary:The purpose of this paper is to design a controlled IGBT rectifier which produces a pure DC current used in chemical surface treatment of metal. During the chemical treatment process, the load resistance is changing continuously. To maintain the current fixed at an appropriate value, a feedback signal from the load is read into the control circuit. The outputs of the developed rectifier are 10VDC and current in the range from 0-250 A. The designed rectifier is composed of IGBT's H-bridge, high frequency center tap transformer, a liquid crystal display to view two values which are the required and the actual currents, a keypad to input the required current, and PIC16F877A microcontroller. The microcontroller's pulse width modulation (PWM) technology is used to generate a DC current that driving the H-bridge with 150KHZ. Finally, the rectifier circuit is simulated and tested using PROTEUS and PSIM packages before being implemented.
DOI:10.1109/ICCNEEE.2015.7381355