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The number of power supplies connected to the public household power grid is constantly increasing. For a good mains voltage quality, the harmonic input currents are limited in standards. Many applications also require a lower output voltage with isolation. Today, this is mostly obtained via a multi-stage converter, consisting of a diode bridge rectifier, a boost PFC and a DC-DC converter with galvanic...
A novel bi-directional AC/DC converter topology is presented in this paper. This circuit topology offers a single-stage non-isolated solution for power conversion, suitable for ESS applications. In the proposed power circuitry, the DC-bus voltage can be higher or lower than the peak of the AC voltage. The detailed analysis reveals that the converter characteristics are different in the rectification...
Inverter is a definitive solution toward ac voltage regulation in a system having input dc voltage variation. This paper proposes, a novel single-stage single-phase buck-boost inverter called dual buck-boost inverter. It has the buck-boost function and requires only four active switches. It has no shoot-through worries and has improved reliability. In the proposed inverter, the body diodes of switches...
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