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For higher power application, the six-switch three-phase boost rectifier is a preferred topology. Compared with three-phase three-wire boost rectifier, the three-phase four-wire input rectifier is more usually used in uninterrupted power supply (UPS) systems to prevent the load neutral from floating. In this paper, the four-wire input boost PFC rectifier is modeled and analyzed; the origin of the...
In this paper, a new single-phase power factor corrector (PFC) based on the Sheppard-Taylor topology is proposed. Compared to conventional buck, boost or buck-boost PFCs, this topology allows a better current tracking at the AC side, with a relatively reduced voltage at the DC side. Consequently, the high frequency AC filters required by the buck PFCs are avoided, and the voltage stresses on the boost...
This paper proposes a single stage topology suitable for small to medium power systems with high inertia loads such as home appliances. This approach features a single controlled power stage which implements both conventional brushless DC motor speed control and a novel power factor correction strategy. This approach eliminates the boost unity power factor (UPF) stage and bulk electrolytic capacitor...
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