Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Hannu Saren"'
Autor:
Hannu Saren, Risto Komulainen, Pertti Silventoinen, Juha-Pekka Strom, Dan Isaksson, Juhamatti Korhonen, Nicklas Sodo, J. Luukko, Arto Sankala
Publikováno v:
IET Power Electronics. 8:1661-1669
The modular double-cascade converter (MDC) is a new multilevel AC/AC converter topology, which has a modular structure. The proposed topology can be used in medium-voltage motor and generator drives, and in interfacing of grids of different voltages
Autor:
Janne Hannonen, Risto Komulainen, Stefan Strandberg, Nicklas Sodo, Hannu Saren, Juhamatti Korhonen, Pertti Silventoinen, Arto Sankala, Juha-Pekka Strom
Publikováno v:
IECON
Solid state transformers normally include a transformer whose operating frequency is well above the usual grid frequencies. These transformers are supplied by power electronic inverters such as an H-bridge. The average value of transformer supply vol
Autor:
Risto Komulainen, Juha-Pekka Strom, Juhamatti Korhonen, Mikko Purhonen, Arto Sankala, Hannu Saren, Nicklas Sodo, Pertti Silventoinen, Stefan Strandberg
Publikováno v:
2014 16th European Conference on Power Electronics and Applications.
Autor:
Nicklas Sodo, Hannu Saren, Risto Komulainen, Juha-Pekka Strom, Devin Dilley, Juhamatti Korhonen, Arto Sankala, Pertti Silventoinen
Publikováno v:
2013 15th European Conference on Power Electronics and Applications (EPE).
In power electronic converters soft switching is an efficient way to reduce losses. A resonant tank in series with the windings of the isolation transformer in a Modular Double-Cascade converter is presented. Positive effects such as switching loss r
Autor:
Hannu Saren, Risto Komulainen, Arto Sankala, J. Luukko, Juhamatti Korhonen, Nicklas Sodo, Dan Isaksson, Juha-Pekka Strom, Pertti Silventoinen
Publikováno v:
2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC).
A new multilevel converter topology with cascaded H-bridges and a multi-winding medium frequency isolation transformer is introduced. The proposed converter topology has a modular structure, which is achieved using cascaded H-bridges. The isolation f
Autor:
J. Tyster, Kimmo Rauma, Pertti Silventoinen, Juha-Pekka Strom, Juhamatti Korhonen, Hannu Saren
Publikováno v:
2009 35th Annual Conference of IEEE Industrial Electronics.
Frequency converters are used to increase the controllability and efficiency of electric motor drives. Induction motors may experience an insulation failure caused by an overvoltage at the motor terminals. The overvoltage is caused by an impedance mi
Publikováno v:
2009 35th Annual Conference of IEEE Industrial Electronics.
In series-connected H-bridge multilevel inverters, the voltage level of each phase is supplied independently by a complicated transformer. The energy flowing back via the free-wheeling diodes may, hence, not be transferred to another phase. Therefore
Publikováno v:
2008 34th Annual Conference of IEEE Industrial Electronics.
A cascaded medium-voltage multilevel frequency inverter can be built using power bridges from unmodified factory-made low-level inverters. Thus, high-voltage power electronic components can be avoided. The multilevel nature also decreases the output
Publikováno v:
2006 12th International Power Electronics and Motion Control Conference.
Connecting power converters in parallel is useful method for solving high power requirements. Parallel structure without intermodule reactors would be desirable because of its low cost and compact size. Due to the finite tolerances in power stages an
Publikováno v:
ReConFig
In this paper a novel field programmable gate array (FPGA) implementation of differential space vector pulse width modulator (DSVPWM) is presented. FPGA circuit was chosen because DSVPWM requires high computational power and its algorithms can be eas