Control and performance of a pulse-density-modulated series-resonant inverter for corona discharge processes

Author

Fujita, Hideaki ; Akagi, Hirofumi

Author_Institution

Dept. of Electr. Eng., Okayama Univ., Japan

Volume

35

Issue

3

fYear

1999

Firstpage

621

Lastpage

627

Abstract

This paper presents the control and performance of a pulse-density-modulated (PDM) series-resonant voltage-source inverter developed for corona discharge processes. The PDM inverter produces either a square-wave AC-voltage state or a zero-voltage state at its AC terminals to control the average output voltage under constant DC voltage and operating frequency. This results in a wide range of power control from 0.5% to 100%, even in the corona discharge load with a strong nonlinear characteristic. A 30 kHz 6 kW surface treatment system consisting of a voltage-source PDM inverter, a step-up transformer, and a corona discharge treater shows the establishment of a stable corona discharge in an extremely wide range of power control and, therefore, succeeds in performing both strong and weak surface treatment processes for film

Keywords

DC-AC power convertors; corona; invertors; load (electric); power transformers; resonant power convertors; surface treatment; voltage control; 30 kHz; 6 kW; average output voltage control; corona discharge load; corona discharge processes; pulse density modulation; series-resonant VSI; series-resonant inverter; square-wave AC-voltage state; step-up transformer; surface treatment system; zero-voltage state; Corona; Insulated gate bipolar transistors; Power control; Power supplies; Pulse inverters; Pulse width modulation inverters; Resonant inverters; Surface discharges; Surface treatment; Voltage control;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.767013

Filename

767013