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This paper presents an alternative direct space vector modulation (DSVM) method of matrix converter for a voltage transfer ratio less than 0.5. The principles of selecting suitable switching configurations based on a new sectors definition are described. Switching table for the alternative DSVM method is developed with the controllable input power factor. There are some advantages of the alternative...
The characteristics of Cuk converters in discontinuous-capacitor-voltage mode are studied. A Cuk converter in this mode of operation is an inherent power factor corrector and features soft turn of switching. This paper proposes a Cuk converter in discontinuous-capacitor-voltage mode (DCVM) operation in order to reduce the total harmonic distortion (THD) of a three-phase rectifier. In the proposed...
Since the input filters characteristics design for matrix converter system: to reduce the high harmonic components at the main power supply current and to improve the input voltage distortion for matrix converter, the unity power factor at the main power supply side is only achieved at the high output load and decreases greatly at the light load conditions. This paper proposes a new direct space vector...
Dynamic voltage restorer and STATCOM are normally employed as a solution for mitigation of voltage sag and swell. This paper presents modelling and analysis of PWM switched autotransformer as a mitigating device for voltage sag and swell disturbances. The proposed system has less number of switching devices and has good compensating capability in comparison to commonly used compensators. Simulation...
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