A new validated physically based IGCT model for circuit simulation of snubberless and series operation

Analysis of cutting-edge techniques in the high voltage and high power adjustable speed drive systems

“…In order to overcome the limitation of semiconductors and obtain the decent output performance, various circuit topologies are adopted in the HVHP ASD system by international companies, which makes the power electronic topologies exhibit multiplicities, e.g., diode NPC topology adopted by Siemens and ABB, H-bridge based cascaded topology by Robicon Co., and series-connected IGBT based two-level topology by A-B [6] . For various present topologies, the common bafflements in the real applications are: 1) absence of information on switching process, which pares down the commutating loop to be on-state and off-state circuit, i.e.…”

“…Filtering and stepping up device in an HVHP inverter (6). The setting of minimum pulse width based on the calculation of stray parameters Minimum pulse width is the least interval settings for gate signal to guarantee that the semiconductor could turn on and off sufficiently.…”

A quasi 2-dimensional model for thyristor based devices

“…Another approach is to solve the 1-dimensional ambipolar diffusion equation numerically [2,3]. The lightly doped gateand base region of the GTO are discretized into several sections where the diffusion equation is solved numerically.…”