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This paper describes a novel power control scheme for a three-phase to single-phase matrix converter for a gas engine cogeneration system. This matrix converter has no dc link but a small capacitor for compensation of single-phase power pulsation. The capacitor also contributes to compensate reactive current of a generator. Additionally, modulation control of instantaneous three-phase power is applied...
This paper discusses about characteristics of a matrix converter where a current feedback is applied to the input side. When the impedance of the power grid is high, such as a generator, the control stability of the matrix converter will be deteriorated. One of the solutions to this problem is to apply an input current stability control that is proposed. However, the efficiency of the generator will...
Z-source energy conversion is a recent concept introduced for adding voltage-boost functionality to the otherwise buck-only dc-ac inverter. The same concept can equally be extended to other converter topologies including the indirect ac-ac matrix converter, where only a single Z-source impedance network needs to be inserted to its intermediate dc-link. Because of such a simple insertion, topological...
This paper proposes a circuit topology of a matrix converter that adding a boost up function in the input side. The proposed circuit combines the matrix converter with a V-connection AC chopper. A conventional control method can be applied in this matrix converter, so called the virtual indirect method. In order to suppress the input filter resonance, this paper discusses about the input filter design...
This paper presents a new modulation strategy for capacitor voltage balancing in three-level neutral-point-clamped inverters by applying the matrix converter theory to eliminate the low frequency oscillation of the neutralpoint voltage and current. The proposed modulation method controls the neutral-point current without affecting the averaged output voltage and current. The behavior of the new modulation...
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