Bum-Seok Suh

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This paper deals with an active gate drive (AGD) technology for high power IGBTs. It is based on an optimal combination of several requirements necessary for good switching performance under hard switching conditions. The scheme specifically combines together the slow drive requirements for low noise and switching stress and the fast drive requirements for(More)
This paper deals with a new multilevel high-voltage source inverter with gate-turn-off (GTO) thyristors. Recently, a multilevel approach seems to be the best suited for implementing high-voltage conversion systems because it leads to harmonic reduction and deals with safe high-power conversion systems independent of the dynamic switching characteristics of(More)
This paper proposes a novel soft-switched auxiliary resonant circuit to provide a zero-voltage transition at turn on for a conventional pulsewidth-modulated boost converter in a power factor correction (PFC) application. The proposed auxiliary circuit enables a main switch of the boost converter to turn on under a zero-voltage switching condition and(More)
This paper introduces a new MOSFET inverter module for driving small brushless dc motors used in fans and water-pump applications. The proposed power module integrates six MOSFETs and three dedicated gate-driving high-voltage integrated circuits (HVICs) in a transfer-molded full-pack package. It provides optimized loss and epoxy molding compound(More)
This paper presents an intelligent IGBT module for a quasi-resonant converter, widely used topology in induction heating (IH) applications. The proposed module is composed of an IGBT and the integrated gate drive circuit which provides dedicated protective and control functions to IH applications: soft start during load detection, long turn-on prevention,(More)
This paper proposes a novel soft-switched auxiliary resonant circuit to provide a Zero-Voltage-Transition turn-on switching for a conventional PWM boost converter in a PFC application. The proposed auxiliary circuit enables a main switch of the boost converter to turn on under a zero voltage switching conduction and simultaneously achieves both soft(More)
Multilevel Inverters have emerged in power conversion systems due to their lower output harmonics and high power capability. This paper presents the performance analysis of a new seven level symmetrical multilevel inverter with reduced number of switches using Carrier Overlapping PWM strategies. Due to switch combination redundancies, there are certain(More)
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