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This letter proposes a new intelligent semiconductor transformer (IST) which consists of a bidirectional ac/dc resonant converter, dc/dc converter, and dc/ac converter. This structure provides good voltage-balancing performance on the high-voltage side and a simple control method for bidirectional power flow. The proposed IST was verified though building and testing a single-phase 2 kVA (1.9 kV...
In this paper, a hybrid dimming inverter for T5 fluorescent lamp is analyzable and designed. By using the digital and analog hybrid dimming, the current stress of switches is reduced, and the dimming range can be extended. A high-frequency inverter with DC 400V voltage source to drive a single T5 28W fluorescent lamp is implemented. The preheating, starting-up function, and hybrid dimming control...
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