Electric power conversion systems – Current conversion – Using semiconductor-type converter
Reexamination Certificate
2007-04-17
2007-04-17
Riley, Shawn (Department: 2838)
Electric power conversion systems
Current conversion
Using semiconductor-type converter
C363S017000
Reexamination Certificate
active
10531103
ABSTRACT:
In a method for control of a converter for conversion of dc voltage into ac voltage or dc voltage and vice versa, in which an output of the converter may alternatively be connected to a positive pole, a negative pole or a center of a dc voltage side of the converter in the form of different so-called main states, there is carried out, when changing between main states via a so-called minor commutation loop, an extra sequence in the form of a delayed turn-on of semiconductor elements in one unit of the converter relative to semiconductor elements in another unit in a pair of units of the converter.
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Tae-Jin Kim, Dae-Wook Kang, Yo-Han Lee and Don-Seok Hyun; The Analysis of Conduction and Switching Losses in Multi-Level Inverter System; Power Electronics Specialist Conference, 20C; 2001; IEEE 32ndAnnual; pp. 1363-1368; vol. 3.
M. Marchesoni; High Performance Current Control Techniques for Applications to Multilevel High Power Voltage Source Inverters; Power Electronics Specialist Conference; 1989; 20thAnnual IEEE; pp. 672-682.
Blidberg Ingemar
Siljeström Roland
Svensson Kjell
ABB AB
Franklin Eric J.
Riley Shawn
Venable LLP
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