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A Study on the Inverter Type Neon Power Supply Using a Piezoelectric Transformer  

변재영 (중앙대 대학원 전기공학과)
김윤호 (중앙대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.8, no.6, 2003 , pp. 504-511 More about this Journal
Abstract
In this paper, inverter type neon power supply using a piezoelectric transformer is fabricated and its characteristic is investigated. Developed neon power supply is composed of basic circuit and blocks, such as rectifier part, frequency oscillation part and piezoelectric transformer and resonant half bridge inverters. In this paper for complement the low power limitation, piezoelectric transformer at parallel connected driving by inverter is studied for noon tubes system of high power. When piezoelectric transformer is connected with parallel, LC filter connection method with parallel and selection of inductance L and capacitor C of primary side is suggested for reduce unbalanced current at the terminal of each transformer. Piezoelectric transformers use piezoelectric ceramic devices. Thus it is wireless therefore it has high power density, high Isolation level, low loss, more light, and miniaturization. In addition, high voltage transfer ratio is expected because there is no leakage inductance. Also, it has economic merit that the electrical loss Is low because structure is simple, small and tighter weight.
Keywords
Piezoelectric transformers; Wireless; Leakage inductance; Power density; Neon tubes;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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