Design of a PT-based resonant inverter for ozone generation with flexible capacity operations

Fu Sheng Pai, Shyh Jier Huang, Tsong Shing Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper proposes a piezoelectric transformer based on a resonant inverter that allows varying-capacity for ozone generation. The drawback of a piezoelectric transformer (PT) lies in its limited ability to transfer power, rendering it unable to provide sufficient current. Therefore, this study proposes a resonance topology with multiple modular parallel PTs using a PT-equivalent circuit derivation, and analyzes the resulting resonance curve characteristics. The proposed resonance topology can flexibly expand the output capacity, and stabilize the resonance characteristics and mechanical frequency. These results show that the proposed device is better suited to controller design. In addition, the study embeds an asymmetrical pulse width modulation (APWM) control concept into the microprocessor control unit such that the operating power of the ozone generator can be well regulated. This method has been realized with hardware circuit verification. Results demonstrate that the proposed inverter effectively drives the ozone generator system, regulates the operation power, and achieves the zero-voltage switching. The proposed design also ensures that the output current of each PT is evenly balanced, thereby facilitating the flexible capacity operations of the approach for industrial applications.

Original languageEnglish
Title of host publication2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013
Pages1241-1244
Number of pages4
DOIs
Publication statusPublished - 2013 Aug 1
Event2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013 - Kitakyushu, Japan
Duration: 2013 Apr 222013 Apr 25

Publication series

NameProceedings of the International Conference on Power Electronics and Drive Systems

Other

Other2013 IEEE 10th International Conference on Power Electronics and Drive Systems, PEDS 2013
CountryJapan
CityKitakyushu
Period13-04-2213-04-25

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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