P‐98: Current‐Sourced Push‐Pull Inverter for Mercury‐Free Flat Fluorescent Lamp Driving

Park, Joung‐Hu; Baek, Jongbok; Cho, Bo-Hyung

doi:10.1889/1.3069458

Cited by 2 publications

(1 citation statement)

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“…9(b) shows the panel voltage (V Cp ), the panel current (I Cp ) presenting the MFFL's electrical operating characteristics, and the winding current of the current balance transformer (I TX ) to conform the current sharing action between the windings. The MFFL is a dielectric barrier discharge (DBD) panel with two soda-lime glasses, representing capacitive load characteristics during the charging/discharging modes [23], [24]. Consequently, the current waveform of the MFFL is shown as a superposition of the sustain (glow) discharge current and the pulse transition current.…”

Section: Resultsmentioning

confidence: 99%

High Efficiency Alternating Current Driver for Capacitive Loads Using a Current-Balance Transformer

Baek¹,

Cho²,

Park³

2011

Journal of Power Electronics

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This paper proposes a new alternating current driving method for highly capacitive loads such as plasma display panels or piezoelectric actuators, etc. In the proposed scheme, a current balance transformer, which has two windings with the same turnratio, provides not only a resonance inductance for energy recovery but also a current balance among all of the switching devices of the driver for current stress reduction. The smaller conduction loss than conventional circuits occurs due to the dual conduction paths which are parallel each other in the current balance transformer. Also, the leakage inductances of the transformer are utilized as resonant inductors for energy recovery by the series resonance to the capacitive load. Furthermore, the resonance contributes to the small switching losses of the switching devices by soft-switching operation. To confirm the validity of the proposed circuit, prototype hardware with a 12-inch mercury-free flat fluorescent lamp is implemented. The experimental results are compared with a conventional energy-recovery circuit from the perspective of luminance performances.

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Section: Resultsmentioning

confidence: 99%