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Title: Parameters influencing the performance of an IGBT gate drive
Authors: Abu-Khaizaran, Muhammad 
Palmer, Patrick 
Wang, Yalan 
Keywords: Active Voltage Control;Electric power system stability;Electric power systems - Control;Active Snubber;Power amplifiers;Bandwidth;Electronic apparatus and appliances - Power supply;Series Operation;Voltage sharing;Electric current converters
Issue Date: 2008
Publisher: PESC Record - IEEE Annual Power Electronics Specialists Conference
Abstract: This paper presents an improvement of an IGBT gate drive implementing Active Voltage Control (AVC), and investigates the impact of various parameters affecting its performance. The effects of the bandwidths of various elements and the gains of AVC are shown in simulation and experimentally. Also, the paper proposes connecting a small Active Snubber between the IGBT collector and its gate integrated within the AVC. The effect of this snubber on enhancing the stability of the gate drive is demonstrated. It will be shown that using a wide bandwidth operational amplifier and integrating the Active Snubber within the gate drive reduces the minimum gate resistor required to achieve stability of the controller. Consequently, the response time of the IGBT to control signals is significantly reduced, the switching losses then can be minimised and, hence, the performance of gate drive as whole is improved. This reflects positively on turn-off and turn-on transitions achieving voltage sharing between the IGBTs connected in series to construct a higher voltage switch, making series IGBTs a feasible practice.
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