Design and Development of a Digital Controlled Dielectric Barrier Discharge (DBD) AC Power Supply for Ozone Generation

A digital controlled dielectric barrier discharge (DBD) AC power supply is designed and investigated. The power source design with a diode bridge rectifier and PWM inverter along with driver circuit are presented. A step up transformer is designed to carry 4.6kW and 10 kVp-p for a dielectric barrier discharge (DBD) AC power supply and for ozone generation. An STM (STMicroelectronics) microcontroller is employed to control the phase shift angle of the PWM (Pulse Width Modulation) inverter. The operating frequency of the PWM inverter is 25 kHz. Zero voltage detection can be reached and achieves maximum efficiency. In addition, a high voltage transformer is included The practical results shown that the DBD power supply can be controlled at the chosen value and extreme efficiency can be 87.45 % at 4.6 kW/10 kVp-p

Design and Development of a Digital Controlled Dielectric Barrier Discharge (DBD) AC Power Supply for Ozone Generation

1057-1068A digital controlled dielectric barrier discharge (DBD) AC (Alternative current) power supply is designed and investigated. The power source design with a diode bridge rectifier and PWM (Pulse Width Modulation) inverter along with driver circuits are presented. A step-up transformer is designed to carry 4.6 kW and 10 kVp-p for a dielectric barrier discharge (DBD) AC power supply and ozone generation. An STM (STMicroelectronics) microcontroller is employed to control the phase shift angle of the PWM inverter. The operating frequency of the PWM inverter is 25 kHz. Zero voltage detection can be reached and achieves maximum efficiency. Also, a high voltage transformer is included. The practical results shown that the DBD power supply can be controlled at the chosen value and extreme efficiency can be 87.45 % at 4.6 kW/10 kVp-p

Dynamic collaboration of repair crews in production shops

317-324This paper presents a model for application of joint repair in large production shops by dynamic collaboration of repair crews. The model evaluates optimum availability, optimum number of repair crews, limiting availability, and limit on the number of repair crews to be employed in a production system with large number of identical and independent machines having no specified RLD (reliability logic diagram). Significant improvement in availability, and increase in net-benefit can be achieved with no additional investment by employing joint repair. An illustrative example from a spinning mill is presented for clarification of the model