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According to the European Directive 2002/95/EC RoHS solders that contain lead have to be replaced with lead-free equivalents. Replacing well-known materials with new materials not only force technological adaptations but also force necessity of reliability investigations, especially new failure modes. In case of lead-free solders, the main problem is reduction of solder joint strength. Lower strength...
This paper presents the implementation of the indirect space vector pulse width modulation (SVPWM) control method of a three-phase ac-ac matrix converter using TMS320LF2407A DSP. The control scheme calculates duty cycles in real time and generates corresponding logic level signals. The SVPWM signals for nine bi-directional switch module in a matrix converter are also generated in encoded form. The...
Matrix converter, which is essentially a forced commutated cycloconverter, has most of the desirable features for any power frequency changers like simple and compact power circuits, generation of load voltage with arbitrary amplitude and frequency, sinusoidal input and output currents, adjustable power factor for any load, regeneration capability and harmonics reduction. A critical issue in control...
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