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Showing 1 to 20 of 251 for “"rectifier"”.
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Analysis of single-phase rectifier circuits
The single-phase rectifier filter circuits, including the half- and full-wave rectifiers with a capacitor and full-wave rectification with either a series inductor or a choke-input filter, have been analyzed taking into account the voltage drop across the tube and the transformer. In these analyses …
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High Voltage Synchronous Rectifier Design Considerations
… this high voltage transition is the synchronous rectifier, which is traditionally designed as an afterthought. Prior research in synchronous rectifiers have been limited to low voltage, high current converters. There is practically no research in high voltage synchronous rectification. Therefore, …
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Development of HTS Transformer-Rectifier Flux Pumps
… improved HTS flux pumps of the transformer-rectifier type and seeks to demonstrate their feasibility and advantage over conventional technology. First, new simulation models are presented which help to understand transformer-rectifier flux pumps and how to optimise them. Based on analysis of …
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Improvements in integrated high-quality rectifier-regulators
The integrated high-quality rectifier-regulators [1] are not practical for universal input voltage and wide load range applications because of high bulk-capacitor voltage stress at lighter loads. This load-dependent characteristic of the bulk-capacitor voltage is due to the integration of a …
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Effect of Surface Conditions on Characteristics of Rectifier Junctions
Made available in DSpace on 2014-12-04T21:02:42Z (GMT). No. of bitstreams: 1 0010491.pdf: 4297884 bytes, checksum: a555a07cb379e70ede2a8e129fe0fb7e (MD5) Previous issue date: 1954
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Improved performance alternator with fully integrated Switched-Mode Rectifier
… alternators. The use of a Switched-Mode Rectifier (SMR) allows the alternator to run at a load-matched condition, optimizing power and efficiency over all operating speeds. However, the use of SMR's has largely been focused on designs for 42 V alternators. This thesis presents the design, …
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Design of rectifier power supplies for Thermal Energy Storage System
… part; asymmetric and symmetric power electronic rectifier are investigated and compared with low frequency modulation and pulse width modulation techniques, based on their power factor (PF) and total harmonic distortion (THD). Finally, direct output voltage control and cascaded current voltage …
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A SiC JFET-Based Three-Phase AC PWM Buck Rectifier
… Utilizing the SiC JFET, a three-phase ac buck rectifier is then demonstrated with a 150 kHz switching frequency and a rated power of 2 kVA. Additionally, improvements are made to the charge control scheme for the buck rectifier allowing power factor compensation and reduction of input current …
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Unified Control for the Permanent Magnet Generator and Rectifier System
… (PMG) connected with an active front-end rectifier is very popular in the AC-DC architecture. Especially for certain applications like aircraft and vehicles, power density and efficiency is critical. Since the generator and the rectifier can be controlled simultaneously, it would be very …
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Design of Extreme Efficiency Active Rectifier for More-electric Aircrafts
… carrying out the task is commonly known as "rectifiers". This work aims at designing and constructing rectifiers that can work efficiently and reliably in more-electric aircrafts. One of the major challenge for these rectifiers comes from the complex aircraft environment. The ambient …
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Development of a single phase active Power filter for rectifier load
… harmonics generated by the single phase rectifier battery charger. .
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GPCR Activation of the G Protein-Gated Inward-Rectifier Potassium Channel
… heart rate by activating G protein-gated inwardrectifier potassium (GIRK) channels. Interestingly, βARs also release the very same free Gβγ, but GIRK is not activated. The molecular mechanism underlying this specificity is poorly characterized. What is the molecular basis behind signaling …
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Modeling and analysis of source-commutated five-phase diode rectifier systems
… and characterize the behavior of 5-phase diode rectifier systems. The motivation behind this research began with a project whose goal was to establish the source (and subsequently mitigate) the acoustic noise produced by an automotive alternator. Based upon the finding that torque ripple is a …
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An integrated generator-rectifier system for high-power AC-DC conversion
… conversion architectures rely heavily on active rectifiers, which consist of fully-controlled power-electronics switches. These make the system bulky, lossy, and less reliable. This dissertation presents an alternative approach: integrating a multi-port permanent magnet synchronous generator …
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The effect of pressure upon the action of the electrolytic rectifier
Made available in DSpace on 2017-11-30T22:11:15Z (GMT). No. of bitstreams: 2 5968861.pdf: 2332173 bytes, checksum: 3aa9b3f9275a37400d718d9b78ae43e0 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1909
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Modeling of Multi-Pulse Transformer/Rectifier Units in Power Distribution Systems
Multi-pulse transformer/rectifier systems are becoming increasingly popular in power distribution systems. These topologies can be found in aircraft power systems, motor drives, and other applications that require low total harmonic distortion (THD) of the input line current. This increase in the …
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Economic analysis of an integrated generator-rectifier system for offshore wind farms
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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The six phase rectifier as a power source for operating DC motors
… effects on the test motor result from six phase rectifier operation, The efficiency was unaffected by rectifier operation, The temperature rise with rectifier operation was roughly within 5°C of that obtained with DC generator input, The commutation was not adversely affected when using the …
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Single-switch three-phase zero-current-transition rectifier with power factor correction
… of the single-switch three-phase boost PFC rectifier is proposed. The soft transition is achieved with a low-power auxiliary circuit employing an additional switch. The circuit can be used with an IGBT at switching frequencies up to 50. Its operation is analyzed in detail, and design …
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