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Single phase matrix converter has been developed to perform the functions of all operations in one converter that is a single circuit is developed that can perform cycloconverter, cycloinverter, ac voltage regulator, rectifier, inverter, chopper operations. The well-known sinusoidal pulse width modulation is used to synthesize the output. IGBT with antiparallel diode is used as a switching device...
This paper proposes to apply an AC/AC direct converter topology for servo systems. In the conventional AC/AC converter which consists of a PWM rectifier and a PWM inverter, the p-n junction temperature becomes high at the low output frequency or the servo-lock operation because the output current concentrates at the specific switching devices in the inverter. On the other hands, the AC/AC direct converter...
This paper presents a new method for the diagnosis of faults in matrix converters. The method is based on the monitoring of nine modulated error signals, each one associated to a bidirectional power switch of the converter. Using the proposed technique, an open-circuit in a given switch is detected whenever the associated modulated error voltage signal rises above an established threshold limit. This...
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