Matrix Converters: A Technology Review
ABSTRACT
The matrix converter is an array of controlled
semiconductor switches that connects directly the three-phase source to the
three-phase load. This converter has several attractive features that have been
investigated in the last two decades. In the last few years, an increase in
research work has been observed, bringing this topology closer to the
industrial application. This paper presents the state-of-the-art view in the
development of this converter, starting with a brief historical review. An
important part of the paper is dedicated to a discussion of the most important modulation
and control strategies developed recently. Special attention is given to
present modern methods developed to solve the commutation problem. Some new
arrays of power bidirectional switches integrated in a single module are also
presented. Finally, this paper includes some practical issues related to the practical
application of this technology, like overvoltage protection, use of filters,
and ride-through capability.
KEYWORDS
1.
AC–AC power
conversion
2.
Converters
3.
Matrix converters.
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
Fig. 1. Simplified
circuit of a 3 x 3 matrix converter
CONCLUSION:
After
two decades of research effort, several modulation and control methods have
been developed for the matrix converter, allowing the generation of sinusoidal
input and output currents, operating with unity power factor using standard
processors. The most important practical implementation problem in the matrix
converter circuit, the commutation problem between two controlled bidirectional
switches, has been solved with the development of highly intelligent multistep
commutation strategies. The solution to this problem has been made possible by using
powerful digital devices that are now readily available in the market.
REFERENCES:
[1]
L. Gyugi and B. Pelly, Static Power
Frequency Changers: Theory, Performance and Applications. New York:
Wiley, 1976.
[2]
A. Brandt, “Der Netztaktumrichter,” Bull.
ASE, vol. 62, no. 15, pp. 714–727, July 1971.
[3]
W. Popov, “Der Direktumrichter mit zyklischer Steuerung,” Elektrie, vol. 29, no. 7, pp.
372–376, 1975.
[4]
E. Stacey, “An unrestricted frequency changer employing force commutated thyristors,”
in Proc. IEEE PESC’76, 1976, pp. 165–173.
[5]
V. Jones and B. Bose, “A frequency step-up cycloconverter using power transistors
in inverse-series mode,” Int. J. Electron., vol. 41, no. 6, pp. 573–587,
1976.
