Power Control of New Wind Power Generation System with Induction Generator Excited by Voltage Source Converter

Morizane, Toshimitsu; Kimura, Noriyuki; Taniguchi, Koki

doi:10.1541/ieejpes.132.181

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2017

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“…If the primary energy source is AC, then some type of AC to DC converter must be placed between the source and the LEDs . Power factor correction (PFC) is one of the most effective methods to reduce harmonics in the current and to improve the power factor . The LED driver has to supply a constant power to avoid flickering.…”

Section: Introductionmentioning

confidence: 99%

High‐power‐factor single‐switch AC to DC converter for LED lighting

Yesuraj¹,

Ramadas²,

Yesuraj

2017

IEEJ Transactions Elec Engng

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In this paper, we report a novel single‐switch AC to DC step‐down converter suitable for light emitting diodes. The proposed topology has a buck and a buck–boost converter. The circuit is designed to operate in the discontinuous conduction mode in order to improve the power factor. In this topology, a part of the input power is connected to the load directly. This feature of the proposed topology increases the efficiency of power conversion, improves the input power factor, produces less voltage stress on intermediate stages, and reduces the output voltage in the absence of a step‐down transformer. The theoretical analysis, design procedure, and performance of the proposed converter are verified by simulation and experiment. A 36 V, 60 W prototype has been built to demonstrate the merits of this circuit. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Introductionmentioning

confidence: 99%