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Relevant bibliographies by topics / Low harmonic distortion / Dissertations / Theses

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Dissertations / Theses on the topic 'Low harmonic distortion'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Tella, Pranavi Chowdari Islam Naz E. "The study of single phase diode rectifiers with high power factor and low total harmonic distortion." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/5677.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on October 6, 2009). Thesis advisor: Dr. Naz E. Islam. Includes bibliographical references.

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Hamdad, Fatemeh-Soheila. "Three-phase AC-to-DC soft-switching HF transformer isolated converters with power factor correction and low harmonic distortion." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0005/NQ40540.pdf.

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3

Earick, Weston R. "DESIGN OF A HIGH-POWER, HIGH-EFFICIENCY, LOW-DISTORTION DIRECT FROM DIGITAL AMPLIFIER." Wright State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=wright1155008919.

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4

Mertens, Junior Ernesto Alberto. "Análise e aplicação de compensação reativa em redes secundária de distribuição com cargas não lineares /." Ilha Solteira : [s.n.], 2008. http://hdl.handle.net/11449/87132.

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Orientador: Luis Carlos Origa de Oliveira<br>Banca: José Carlos Rossi<br>Banca: Olivio Carlos Nascimento Souto<br>Resumo: O presente trabalho avalia a viabilidade técnica da aplicação de compensação reativa em circuitos secundários aéreos de baixa tensão, através da aplicação de capacitores e / ou filtros para aplicação em Baixa Tensão, buscando assim uma otimização dos reativos presentes nas redes secundárias. Considerando-se as constantes mudanças que vêm ocorrendo no cenário de distribuição de energia elétrica, devido ao grande avanço da eletrônica de potência e de cargas não lineares cada

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5

Mertens, Junior Ernesto Alberto [UNESP]. "Análise e aplicação de compensação reativa em redes secundária de distribuição com cargas não lineares." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/87132.

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Made available in DSpace on 2014-06-11T19:22:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-11-17Bitstream added on 2014-06-13T18:49:33Z : No. of bitstreams: 1 mertensjunior_ea_me_ilha.pdf: 1934720 bytes, checksum: fe7d7a9f65b7d36be8112ffea7f317ae (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O presente trabalho avalia a viabilidade técnica da aplicação de compensação reativa em circuitos secundários aéreos de baixa tensão, através da aplicação de capacitores e / ou filtros para aplicação em Baixa Tensão, buscando assim uma otimização dos reativos

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6

Malm, B. Gunnar. "High Frequency Characterization and Modeling of SiGe Heterojunction Bipolar Transistors." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3324.

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7

Xu, Xiao. "Harmonic modelling and characterisation of modern power electronic devices in low voltage networks." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33106.

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Although the overall levels of harmonics in modern power supply systems are in most of the practical cases still below the prescribed tolerance limits and thresholds (e.g. these stipulated in [IEC 61000-3-2 and 61000-3-12]), the sources of harmonics are constantly increasing in numbers and are expected to increase even more in the future. Some of the examples of modern non-linear power electronic (PE) devices that are expected to be employed on a much wider scale in LV networks in the future include: light-emitting diode (LED) lamps, switched-mode power supplies (SMPS'), electric vehicle batte

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8

Bin, Mohd Rozlan Mohd Helmy Hakimie. "DC/AC inverter based switched capacitor circuit topology with reduced number of components for low power applications." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/16009.

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This thesis presents a new DC/AC inverter circuit which is based on a switched-capacitor circuit topology with reduced components (power switch and capacitor) count for low power applications. The proposed circuit has distinct features of both voltage boost-up and near sinusoidal (multi-level/staircase) AC output voltage. The main idea is to utilise a simple circuit technique called resonant-based Double Switch Single Capacitor Switched-Capacitor (DSSC SCC) with variable duty cycle Pulse Width Modulation (PWM) control technique in such a way that multi-level voltage can be realised across a ca

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Pelteku, Altin E. "Adaptive Suppression of Interfering Signals in Communication Systems." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/138.

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The growth in the number of wireless devices and applications underscores the need for characterizing and mitigating interference induced problems such as distortion and blocking. A typical interference scenario involves the detection of a small amplitude signal of interest (SOI) in the presence of a large amplitude interfering signal; it is desirable to attenuate the interfering signal while preserving the integrity of SOI and an appropriate dynamic range. If the frequency of the interfering signal varies or is unknown, an adaptive notch function must be applied in order to maintain adequate

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10

Chen, Yi-Ming, and 陳毅明. "LOW HARMONIC DISTORTION MODULATION OF GRID-CONNECTED INVERTERS." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/68u6aq.

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碩士<br>元智大學<br>電機工程學系<br>106<br>The main circuit of the three-phase grid-connected inverter system using FPGA in this thesis consists of three-phase inverter, filter capacitor, filter inductor, isolation transformer, etc. The control circuit includes FPGA development board, sampling circuit, A / D, and drive circuit. The main work of the converter circuit, drive circuit, etc. mainly includes the following aspects: First, this thesis analyzes the main circuit topology of the three-phase grid-connected power generation system, study in detail the working principle of the three-phase full-bridge i

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11

Yan, Jun. "A Low Total Harmonic Distortion Sinusoidal Oscillator Based on Digital Harmonic Cancellation Technique." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11204.

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Sinusoidal oscillator is intensively used in many applications, such as built-in-self-testing and ADC characterization. An innovative medical application for skin cancer detection employed a technology named bio-impedance spectroscopy, which also requires highly linear sinusoidal-wave as the reference clock. Moreover, the generated sinusoidal signals should be tunable within the frequency range from 10kHz to 10MHz, and quadrature outputs are demanded for coherent demodulation within the system. A design methodology of sinusoidal oscillator named digital-harmonic-cancellation (DHC) technique i

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12

Huang, Jia-Sin, and 黃家信. "A Study of High Power Factor and Low Harmonic Distortion for Distribution Transformer." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/23104503389902921602.

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碩士<br>崑山科技大學<br>電機工程研究所<br>100<br>The rapid development of power electronics technology makes its components and equipment have been widely used in power system equipment. This result is in deterioration of power quality, large number of power system harmonic pollution problems caused by electrical equipment accidents frequently. In order to improve the functions of the distribution transformer, this thesis is proposed combination of passive power filter and power factor correction control unit for distribution transformer. The automatic power factor regulator control the passive power filter

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13

Yang, Chih-Hsiang, and 楊智翔. "Comparing Total Harmonic Distortion for Cascade Multilevel Active front-end Converters with Low Carrier Ratio." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/he4c5x.

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碩士<br>中華大學<br>電機工程學系<br>104<br>Active Front End converter (AFE) having a controllable DC voltage, controllable power factor, bidirectional power flow control and low harmonic distortion of the phase current, it can achieve requirements of IEEE 519- 1992, IEC 6100-3-2 and other industry specifications to avoid voltage and current drops leaving the power quality when the power system contain non-linear loads. The architecture of multi-level inverter reduce the total harmonic distortion for achieve a higher quality of the power system effectively. So the architecture has gradually replace the tra

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14

Chen, Sung-chih, and 陳松智. "Study and Implementation of a Power Factor Corrector with Low Current Harmonic Distortion and Superior Dynamic Response Features." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/sufjwa.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>99<br>The main purpose of this thesis is to study and implement a 300 W continuous current conduction mode (CCM) power factor corrector (PFC) with an external sample and hold (S/H) circuit design. A zero crossing detection (ZCD) circuit is designed to avoid wrong sampling due to electromagnetic interference (EMI) issue. The proposed PFC converter has the advantages of low input current total harmonic distortion (THD) and superior dynamic response features. Operation principles and design considerations of the proposed PFC converter are analyzed and discussed in detai

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15

Hamdad, Fatemeh Soheila. "Three-phase AC-to-DC soft-switching HF transformer isolated converters with power factor correction and low harmonic distortion." Thesis, 1999. https://dspace.library.uvic.ca//handle/1828/8824.

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This thesis presents new configurations for three-phase AC-to-DC single-stage, softswitched, high frequency (HF) transformer isolated converters with power factor correction (PFC) and low harmonic distortion. Four different configurations are presented. Topology of all these four configurations is based on integration of a front-end DCM boost with a soft switching HF transformer isolated DC-to-DC PWM converter with fixed frequency. DCM operation of the front-end boost provides natural PFC with low total harmonic distortion (THD) and the DC-to-DC HF transformer isolated soft switching PWM conve

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16

Ou, Rong-Shyang, and 歐榮祥. "Design and Implementation of a DSP-Based Programmable AC Power Source with Low Harmonic Distortion Using Repetitive Control Theory." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/78409312176855470687.

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碩士<br>國立交通大學<br>控制工程系<br>82<br>The purpose of this theis is to analyze and implement an ac power source system based on digital signal processors (DSP) usingthe repetitive control algorithm. (1) To established a mathematic model of a PWM controlled inverter system.Authors have investigated the reason why the output waveform of an ac power sourcemay be distorted due to connected nonlinear loads. Much previous research was explored from the standpoint of instant-command tracking and steady- s

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17

蔡仁杰. "High Efficiency and Low Total Harmonic Distortion Power Factor Correction Controllers with Automatic Loading Detection and Perturbation On-time Techniques." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/89786690166223606347.

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博士<br>國立交通大學<br>電控工程研究所<br>100<br>The power factor correction (PFC) controller is more popular in today’s green power mainstream for improving power utilization efficiency. The power factor correction shapes the input current of off-line power supplies to increase the real power available from the AC source. First, the proposed perturbation on-time (POT) technique suppresses total harmonic distortion (THD) and thus improves the power factor (PF) in the power factor correction (PFC) controller. Besides, the adaptive controls of the minimum off-time by the proposed inhibit time (IT) control

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18

Yang, Jen-Hua, and 楊仁華. "Design and Implementation of an Active LED Driver Scheme with High Power Factor and Extra-Low Total Harmonic Distortion of Input Current." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/yyh3a7.

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碩士<br>中原大學<br>電機工程研究所<br>102<br>In this thesis, a scheme with high power factor and extra-low total harmonic distortion of input current is implemented in AC-DC LED driver based on Primary Side Regulation (PSR). It achieves the performance of high Power Factor (PF) and extra-low Total Harmonic Distortion of Input current (THDi), and operates in Boundary Conduction Mode (BCM). We adopt the structure of the improved PSR converter scheme by using SD6800 to implement the design. How to improve PF and THDi will be described. The analysis and design of our SD6800 application circuit are explained h

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