Abstract
AbstractThe matrix converter is a three‐phase AC‐to‐AC direct converter without any energy storage requirement such as DC link capacitors. However, the matrix converter has some practical problems such as the necessity for bidirectional power devices, necessity for special commutation sequence, and complexity of the control method. Thus, there are no practical systems in which matrix converters are used. In this paper, the control strategy for matrix converters with basic configuration is investigated so as to realize practical matrix converters. First, the necessity of the phase detector for the input voltage and the output current sensor is pointed out from the viewpoint of realization of the basic operation. With these sensors required in the basic configuration, the instantaneous control of the output current is realized. It is also pointed out that three‐phase switching is effective in improving the input current waveforms. Some methods for implementation of three‐phase switching are proposed. The effectiveness of the proposed control methods is confirmed by some experimental results employing a test system. © 2005 Wiley Periodicals, Inc. Electr Eng Jpn, 151(4): 55–64, 2005; Published online in Wiley InterScience (www.interscience. wiley.com). DOI 10.1002/eej.20031
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