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Nowadays the medium and high voltage large power AC-DC-AC converters are widely used in various industrial fields. The integrated gate commutated thyristor (IGCT) is applied to these converters on a large scale due to its high rated voltage and current and other excellent characteristics. In this paper the investigation on IGCT-based NPC/H-bridge large power converter is proposed. The converter is...
With the development of large power electronics, application of the large power converter using the self-controllable devices such as IGCT becomes the trend. The large power high performance AC-DC-AC converters with high output frequency and less harmonic component are widely required in many fields such as metallurgy and transportation. The 16MVA voltage source converter with IGCTs is introduced...
Large capacity converter is widely used in various national economic fields. The novel topology and new emerging device with high voltage and current are the ways to get large capacity converter. In media and high voltage large capacity AC-DC-AC converter systems, the Integrated Gate Commutated Thyristor (IGCT) takes the place of gate turn off thyristor (GTO) duo to its excellent performance. In this...
The performance of the large power AC drive system for rolling mills should meet the need of production technology and adapt to the requirement of the electric network. In the paper, the cycloconverter system is introduced. With the development of large power electronics, application of the large power converter using the self-controllable devices such as IGCT becomes the trend. The three-level AC-DC-AC...
IGCTs have the features of high current, high voltage, high reliability, compact structure and low loss. They have been widely used in large power voltage source inverter systems now, and they have extensive application prospect. In the paper, the large power three-level converter with IGCTs is introduced. Then with a series experiments, the converter is tested. The efficiency of the converter is...
IGCTs have the features of high current, high voltage, high reliability, compact structure and low loss. They have been widely used in large power voltage source inverter systems now, and they have extensive application prospect. In the paper, the switching property of IGCT used in large power voltage source inverter is investigated. And part of the simulation results are verified with experiment...
In this paper an investigation and development on a set of 7.5MVA large power three-level neutral point clamped convertor system is introduced. The convertor include five parts: rectifier, discharge circuit, chopper, dc-link, inverter. The rectifier of the convertor consist of the three phases diode rectifier bridge in series with thyristor rectifier bridge. The discharge circuit consists of one thyristor...
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