Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 96 for “"Power Factor Correction"”.
-
Power factor correction
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1921.
-
Digital Control for Power Factor Correction
… and improvement of a digital controller for a power factor correction (PFC) converter. The development of the telecommunications industry and the Internet demands reliable, cost-effective and intelligent power. Nowadays, the telecommunication power systems have output current of up to several …
-
Advanced Single-Stage Power Factor Correction Techniques
Five new single-stage power factor correction (PFC) techniques are developed for single-phase applications. These converters are: Integrated single-stage PFC converters, voltage source charge pump power factor correction (VS-CPPFC) converters, current source CPPFC converters, combined voltage …
-
Development of advanced power factor correction techniques
Three novel power factor correction (PFC) techniques are developed for both single-phase and three-phase applications. These techniques have advantages over the conventional approaches with regard to the converter efficiency, power density, cost, and reliability for many applications. The …
-
Advanced Integrated Single-Stage Power Factor Correction Techniques
… of the advanced integrated single-stage power-factor-correction (S2PFC) techniques, which target at the low- to medium-level power supplies, for wide range of applications, from power adapters and computers to various communication equipment. To limit the undesirable power converter …
-
Development of power factor correction using boost converter circuit
… Texas Instrument (interface), gate driver, power factor correction circuit in boost circuit topology and rectifier circuit, load and sensor are the main parts in this project. Texas Instrument works as the interface communication with MATLAB SIMULINK 2015a to the power factor correction …
-
Power factor correction using a boost quasi-resonant converter
… performed in its application to a single-phase power factor correction circuit. The known closed-form expressions are used to design the boost converter and the multiloop control circuit. The operating characteristics are simulated by using PSPICE and are experimentally verified. Considerations …
-
Design and analysis of an active power factor correction circuit
The design of an active-unity power factor correction circuit with variable-hysteresis control for off-line dc-to-dc switching power supplies is described. Design equations relating the boost inductor current ripple to the circuit components selection and circuit performance arc discussed. A …
-
Study and Improvement of Single-Stage Power Factor Correction Techniques
… on the study and improvement of single-stage power factor correction techniques. The generalized structures of the present pulse-width-modulation (PWM) integrated single-stage power factor correction (PFC) converters are presented. The typical PFC cells in the single-stage PFC converter are …
-
Controlled on-time power factor correction circuit with input filter
An active power factor correction circuit with controlled on-time is proposed. The circuit has a simpler control scheme than the power bc10r correction circuit with hysteresis control, and yet is able to attain high power factor. A very important aspect of this work was the formulation of the …
-
Power factor correction and power consumption characterization of piezoelectric actuators
… to 90 degrees out of phase. This causes the power factor (PF) of the load to be close to zero and results in excessive power requirements. This thesis reports the results of a study of the following question: What effect does applying power factor correction methods to piezoceramic actuators …
-
A Novel Arc Welding Power Supply with Improved Power Factor Correction
… design and development of a novel Arc Welding Power Supply utilizing a modified two-switch forward converter topology. The proposed design improves the power quality by improving power factor to near unity and reducing total harmonic distortion. State space analysis of the proposed circuit …
-
Effects of Input Power Factor Correction on Variable Speed Drive Systems
… due to emerging high volume of fractional horsepower VSD applications. Almost all of the appliance VSDs have no input power factor correction (PFC) circuits. This results in harmonic pollution of the utility supply which could be avoided. The impact of the PFC circuit in the overall drive system …
-
Single Phase Power Factor Correction Circuit with Wide Output Voltage Range
The conventional power factor correction circuit has a fixed output voltage. However, in some applications, a PFC circuit with a wide output voltage range is needed. A single phase power factor correction circuit with wide output voltage range is developed in this work. After a comparison of two …
-
Effects of transmission line compensation and power factor correction on harmonic propagation
This thesis addresses power quality at two different levels, transmission and utilization. Harmonics injected at these levels can severely degrade the performance and long term reliability of the power system; At the utilization level, a typical industrial power system configuration that requires …
-
Bridgeless Active Power Factor Correction Using a Current Fed Push Pull Converter
… <p>Bridgeless Active Power Factor Correction</p> <p>Using a Current Fed Push Pull Converter</p> <p>Jeramie Seth Bianchi</p> <p> Switched Mode Power Supplies have become increasingly popular for efficient methods of delivering power to an assortment of electronic …
-
Three-Phase Power Factor Correction Circuits for Low-Cost Distributed Power Systems
Front-end converters with power factor correction (PFC) capability are widely used in distributed power systems (DPSs). Most of the front-end converters are implemented using a two-stage approach, which consists of a PFC stage followed by a DC/DC converter. The purpose of the front-end converter is …
-
Single-switch three-phase zero-current-transition rectifier with power factor correction
… 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 guidelines are provided. The small signal model of the circuit is …
-
Application of Optimization Techniques to the Design of a Boost Power Factor Correction Converter
… optimization techniques to the design of a boost power factor correction (PFC) converter with an input electromagnetic interference (EMI) filter at the component level. The analysis is performed based on the particular minimum cost design study of a 1.15 kW unit satisfying a set of specifications. …
Page 1 of 5