AC voltage frequency changes is one of the most important
functions of solid state power converters. The most desirable
features in frequency converters are the ability to generate load
voltages with arbitrary amplitude and frequency, sinusoidal
currents and voltages waveforms; the possibility of providing unity
power factor for any load; and, finally, a simple and compact power
circuit. Over the past decades, a number of different frequency
converter topologies have appeared in the literature, but only the
converters with either a voltage or current DC link are commonly
used in industrial applications. Improvements in power
semiconductor switches over recent years have resulted in the
development of many structures of AC-AC converters without DC
electric energy storage. Such converters are an alternative
solution for frequently recommended systems with DC energy storage
and are characterized by a lower price, smaller size and longer
lifetime. Most of the these topologies are based on the structure
of the matrix converter.
"Three-Phase AC-AC Power Converters Based On Matrix Converter
Topology: Matrix-reactance frequency converters concept" presents a
review of power frequency converters, with special attention paid
to converters without DC energy storage. Particular attention is
paid to nine new converters named matrix-reactance frequency
converters which have been developed by the author and the team of
researchers from Institute of Electrical Engineering at the
University of Zielona Gora. The topologies of the presented
matrix-reactance frequency converters are based on a three-phase
unipolar buck-boost matrix-reactance chopper with source or load
switches arranged as in a matrix converter. This kind of approach
makes it possible to obtain an output voltage greater than the
input one (similar to that in a matrix-reactance chopper) and a
frequency conversion (similar to that in a matrix converter).
Written for researchers and Ph.D. students working in the field
of power electronics converters and drive systems, "Three-Phase
AC-AC Power Converters Based On Matrix Converter Topology:
Matrix-reactance frequency converters concept "will also be
valuable to" "power electronics converter designers and users;
R&D centers; and readers needing industry solutions in variable
speed drive systems, such as automation and aviation.
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