AC-AC Statistic Matrix converter, also called frequency converters, is the most widely-used and first power electronics systems. These converters are conventionally designed and produced with an AC-DC-AC structure (i.e. a middle DC circuit is used). The used filter in the middle circuit causes system loss and increases the circuit volume. On the other hand, because of the short lifetime of electrolyte capacitors used in the middle DC circuit, reliability decreases. The direct ACAC converter does not have such weaknesses, but the bidirectional switches have not been developed enough and because of commutation problems, these converters are not suitable replacements for the AC-DC-AC converters. To produce two phase voltage, Scott transformers are mostly used for industrial purposes. But the cost and the core loss of Scott transformers are much higher than the matrix converters. In this paper, a two-phase matrix converter is introduced, in which he number of switches are reduced as much as possible in order to decrease the switching losses and to eliminate the commutation problem in line side. Simulation results are presented showing the proposed circuit and it\\\\\\\\\\\\\\\'s control working good enough. © 2006, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.

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