The three-phase half-wave phase controlled converter

2011 ◽  
pp. 83-100
Keyword(s):  
Wave Phase ◽  
Half Wave ◽  
Three Phase

scholarly journals Analysis of Controlled Single-phase Full-Wave Rectifier with RL Load

2018 ◽  
Vol 3 (12) ◽  
pp. 25-31
Author(s):  
Aniagboso John Onah
Keyword(s):  
Output Voltage ◽  
Single Phase ◽  
Load Current ◽  
Full Wave ◽  
Half Wave ◽  
Three Phase ◽  
Continuous Current ◽  
Current Operation ◽  
Wave Converter

Diodes are popularly used in rectifiers, which convert an ac signal into a unidirectional signal. They produce a fixed output voltage only. However, controlled switches such as thyristors are used to vary the output voltage of a converter by adjusting the delay or firing angle α of the thyristors. Phase-controlled converters are simple, efficient and less expensive. There are both single-phase and three-phase converters depending on the input supply. We also have half-wave and full-wave converters. The half-wave converter has only one polarity of output voltage and current, while for the full converter, the polarity of the output voltage can be either positive or negative. The purpose of this paper is to investigate the operation of the Single-phase full-wave rectifier. Load current for the controlled full-wave rectifier with R-L load can be either discontinuous or continuous. The paper shows how the rectifier transits from discontinuous current operation to continuous current operation.

Design and fabrication of a thin film broadband half-wave phase retarder

2001 ◽  
Author(s):  
Fang Ho ◽  
D. Lin ◽  
M-S Wu ◽  
T-Y Huang ◽  
W. Lee
Keyword(s):  
Thin Film ◽  
Wave Phase ◽  
Half Wave

Three-Phase Half Wave Cycloconvertor

1972 ◽  
Vol 18 (2) ◽  
pp. 79-85
Author(s):  
G. N. Revankar ◽  
K. Nallathambi
Keyword(s):  
Half Wave ◽  
Three Phase

scholarly journals Half-wave phase retarder working in transmission around 630nm realized by atomic layer deposition of sub-wavelength gratings

2014 ◽  
Vol 5 (1) ◽  
pp. 124 ◽  
Author(s):  
Thomas Paul ◽  
Andre Matthes ◽  
Torsten Harzendorf ◽  
Stephan Ratzsch ◽  
Uwe D. Zeitner
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Wave Phase ◽  
Layer Deposition ◽  
Half Wave ◽  
Sub Wavelength

scholarly journals An Achromatic Quarter-Wave and Half Wave Phase Retarder Combination Operating in Near-Infrared (NIR) Region

2019 ◽  
Vol 9 (1) ◽  
pp. 6029-6031
Keyword(s):  
Near Infrared ◽  
Optical Systems ◽  
Infrared Range ◽  
Wave Phase ◽  
Half Wave ◽  
Comparable Performance ◽  
Quarter Wave ◽  
Near Infrared Range ◽  
Sub Wavelength ◽  
Phase Retarders

Optical phase retarders are major components in design of different optical systems. Normally these retarders exhibit retardance which varies with wavelength. But achromatic phase retardation is necessary in optical system design. These achromatic phase retarders can be designed using different waveplates, sub-wavelength grating (SWG), liquid crystals, and polymers etc in different wavelength ranges. Present communication focus on designing of quarter-wave phase retarder in the near infrared range (NIR) with waveplates of different birefringent materials having different thicknesses. This system in NIR range shows comparable performance with those developed with SWGs and it also removes some drawbacks. The proposed system deals with an achromatic combination of four birefringent plates in 800–2000 nm range using Sapphire, CdSe, Calcite, and Rutile crystals having good transmittance in the NIR range. This system can also be used as a half wave phase retarder in NIR.

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