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This paper is concerned with the process of current commutation and overvoltage protection in matrix converters. The mechanisms involved in the commutation process and clamp circuit are described and simulation waveforms are presented. A four-step semi-soft commutation strategy is described that this technique relies on knowledge of the output current direction and the ability to control the direction...
This paper provides a brief review on characteristics of main topologies of voltage source multilevel inverters. The selected topologies included conventional two levels, flying capacitor, neutral point clamped, three levels and seven levels cascaded H-bridge inverters. Several performances of topologies including quality of waveforms of output voltage, cost, complexity and reliability are selected...
This paper proposes a new topology for multi-input multi-output Buck-Boost DC-DC converter based on the concept of matrix and Buck-Boost Converters to interface efficiently between DC loads and various DC power sources in a microgrid. A power sharing process can be applied among the input sources and output loads to control the contribution of each input sources in supplying the output loads. The...
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