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Aiming at the problems of voltage sharing failure and overvoltage when Insulated Gate Bipolar Transistors (IGBTs) are utilized in series, a novel voltage-balancing method for series-connected IGBTs based on Field Programmable Gate Array (FPGA) is proposed in this paper. Firstly, the collector-emitter voltages of IGBTs are gathered and send to FPGA. Secondly, FPGA generate control signals by using...
Currently, silicon carbide (SiC) technology is developing rapidly. Compared to conventional silicon devices, it has high voltage, high temperature, fast switching speed and low on-resistance and other excellent features. Thus it will play an invaluable role in the next electrical grid. This paper describes the basic characteristics and development of SiC devices. Combined with the future requirements...
This paper studies an fast calculating method of IGBT, then introduces several different PWM techniques in converters. It further compared the MVA rated three-phase IGBT converter's loss rates under different PWM means. Based on the lowest power loss, it presents the most desirable PWM method.
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