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Dissertations / Theses on the topic 'Phase angle'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Maamache, Mustapha. "Phase de berry, angle de annay et etats coherents action angle." Nice, 1993. http://www.theses.fr/1993NICE4625.

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Ce travail de physique theorique porte sur les relations entre la phase de berry et l'angle de hannay qui sont deux notions geometriques decrivant des transports naturels en physique respectivement quantique et classique. Le but principal de ce travail a ete d'elaborer un nouveau formalisme, celui des etats quantiques action angle (generalisation des etats coherents de l'oscillateur harmonique), dans lequel le transport classique apparait comme un cas particulier du transport quantique. Cela a permis non seulement d'etablir plusieurs derivations quantiques inedites de l'angle de hannay, mais a

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2

Magozore, Caxton. "DSP phase angle controlled three phase to single phase uninterruptible power supply." Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/5177.

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3

Alps, Mike. "The phase transformation friction angle of sand." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1442864.

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4

Leibly, Frank J. (Frank Joseph). "Measurement and digitization of phase angle modulated sensor data." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/37753.

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5

Kok, Yitping. "Phase-referenced Interferometry and Narrow-angle Astrometry with SUSI." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/10028.

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This thesis describes the development of an astrometric facility at the Sydney University Stellar Interferometer (SUSI) with an aim to measure at high precision the relative astrometry of bright close binary stars and ultimately to detect the presence of exoplanets within those binary star systems through observations of the systems’ perturbed motion. At the core of the facility is a new beam combiner that is phase-referenced to an existing primary beam combiner in the visible wave- length regime. The latter provides post-processed fringe-tracking information to the former for fringe stabiliza

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6

Morris, Darryl William Seymour. "Low angle protein phasing." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341631.

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7

Eaton, Elizabeth Jane. "Paradoxical breathing and arousal from sleep." Thesis, Manchester Metropolitan University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320131.

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8

Sadler, Peter Andrew. "Harmonic elimination and voltage control in three phase AC power converters." Thesis, Manchester Metropolitan University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285285.

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9

Allison, Steven David. "The effects of interblade phase angle on pitch oscillating, transonic, cascade flows." Thesis, University of Salford, 2011. http://usir.salford.ac.uk/26530/.

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A series of compressor blades, aligned as a cascade, situated in a transonic flow has been studied using a two-dimensional Computational Fluid Dynamics (CFD) technique. An objective of the research was to discover, using a CFD code, how the total aerodynamic stability of a compressor cascade was affected by blade pitching oscillations, vibrating at certain interblade phase angles and oscillation frequencies. The analysis focused on the way in which the interblade phase angle, a, is likely to affect the stability of the cascade over a range of oscillation frequencies between 200Hz and 1 OOOHz,

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10

Cocquerelle, Jean-Louis. "Étude des associations en triphasé : gradateur en angle de phase - transformateur - résistances." Lille 1, 1985. http://www.theses.fr/1985LIL10107.

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Pour régler de façon continue le débit du réseau de distribution dans un récepteur triphasé résistif, à l'aide d'un dispositif présentant de très faibles pertes, il est usuel de disposer un gradateur fonctionnant en "angle de phase" entre la source et la charge. Il est presque toujours nécessaire, dans les équipements de forte puissance, d'ajouter un transformateur. L'analyse du fonctionnement de l'ensemble transformateur - gradateur - charge est très complexe, pour plusieurs raisons :- D'abord, ces dispositifs fonctionnent en commutation libre, c'est à dire que l'on ne peut commander que la m

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11

Marais, Sarel Jacobus. "The quadrifilar helix antenna and its application to wide angle phase-steered arrays." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/21675.

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Thesis (MScIng)--University of Stellenbosch, 2007.<br>ENGLISH ABSTRACT: The quadrifilar helix antenna has frequently been employed to provide the wide angle, circularly polarized radiation pattern which is preferable for mobile satellite communications. A detailed study of this antenna and its varieties is presented. When used as an element in wide angle scanning arrays for aeronautical satellite tracking applications, the additional requirement of a low profile with light weight applies. This further complicates the realization of good circular polarization close to the horizon. A top

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12

Swann, Joshua Michael George. "Characterising pH response in phase separated hydrogels using small angle X-ray scattering." Thesis, University of Sheffield, 2010. http://etheses.whiterose.ac.uk/14968/.

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A range of (methyl methacrylate)-block-poly(2-(diethylamino)ethyl methacrylate)block- poly(methyl methacrylate) [PMMA-block-PDEA-block-PMMA] and poly(methyl methacrylate )-block-poly(methacrylic acid)-block-poly(methyl methacrylate) [PMMA-blockPMAA- block-PMMA] triblock copolymers have been prepared via group transfer and anionic polymerisation respectively. These hydrophilic-hydrophobic block copolymers were characterized with respect to their chemical composition and molecular weights by 1 H and by gel permeation chromatography respectively. Morphological development in solvent cast films we

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13

Schmidt, Nico [Verfasser]. "Phase transformation behaviour of polylactide probed by small angle light scattering / Nico Schmidt." Paderborn : Universitätsbibliothek, 2020. http://d-nb.info/1209601370/34.

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14

Collins, Edward Randolph Jr. "Torque and speed control of single-phase induction motors using an adjustable amplitude and phase angle auxiliary winding power supply." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/15472.

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15

Chavan, Harshad S. "Investigation of ß-phase poly (vinylidene fluoride) films using small-angle x-ray scattering." Cincinnati, Ohio : University of Cincinnati, 2006. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1145990710.

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16

Polavieja, Gonzalo Garcia de. "Geometric phase and angle for noncyclic adiabatic change, revivals and measures of quantal instability." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325986.

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17

CHAVAN, HARSHAD S. "INVESTIGATION OF β-PHASE POLY (VINYLIDENE FLUORIDE) FILMS USING SMALL- ANGLE X-RAY SCATTERING". University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1145990710.

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18

Harada, Tamotsu. "Ultra-Small-Angle Scattering Study of Formation Mechanism and Phase Transition of Colloidal Crystals." Kyoto University, 2001. http://hdl.handle.net/2433/150664.

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19

Pontoni, Diego. "Small-angle X-ray scattering studies of phase transitions and growth processes on colloidal dispersions." Thesis, King's College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271227.

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20

Xia, Tao. "Frequency Monitoring Network (FNET) Algorithm Improvements and Application Development." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/77296.

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The Internet Based real-time GPS synchronized wide-area Frequency Monitoring Network (FNET) is an extremely low cost and quickly deployable wide-area frequency measurement system with high dynamic accuracy which consists of Frequency Disturbance Recorder (FDR) distributed to more than 100 places around North America and an Information Management System situated at Virginia Tech. Since its first FDR deployment in 2003, the FNET system has been proved to be able to reliably receive phasor data accurately measured at and instantaneously sent via the Internet from different locations of interest,

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21

Dowsett, Amy. "The improvement of vehicle noise variability through the understanding of phase angle and NVH analysis methods." Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/35880.

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Noise, vibration and harshness (NVH)levels in the luxury automotive industry are used by customers as a subjective method of determining the vehicle quality. This can be achieved by adjusting the vehicle design, where simulations are used to predict the NVH behaviour. Changes can be expensive and time consuming when made after the design stage has been completed, so it is important to produce accurate simulations of the product. Variability exists to some extent in all products, even those just off the production line, however, if a high level of variability exists then only a small portion of

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22

Bucher, Thomas M. Jr. "CAPILLARITY AND TWO-PHASE FLUID TRANSPORT IN MEDIA WITH FIBERS OF DISSIMILAR PROPERTIES." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/3653.

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Capillarity is a physical phenomenon that acts as a driving force in the displacement of one fluid by another within a porous medium. This mechanism operates on the micro and nanoscale, and is responsible for countless observable events. This can include applications such as absorption in various hygiene products, self-cleaning surfaces such as water beading up and rolling off a specially-coated windshield, anti-icing, and water management in fuel cells, among many others. The most significant research into capillarity has occurred within the last century or so. Traditional formulations for fl

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23

Clark, Matthew A. "The Harmonic Distortion Reduction of Phase-Angle Fired SCRs Feeding a Resistive Load using Fuzzy Logic." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1271111941.

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24

Thakkar, Kairavee K. "A Geometric Analysis of Time Varying Electroencephalogram Vectors." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613745734396658.

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25

Uriarte, Fabian. "Modeling, Detection, and Localization of High-Impedance Faults In Low-Voltage Distribution Feeders." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/30810.

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High-impedance faults (HIFs) on distribution feeders are abnormal electrical conditions that cannot be detected by conventional protection schemes. These faults pose a threat on human lives when neighboring objects become in contact with the lineâ s bare and energized conductors. An accurate electrical model for a HIF is implemented to investigate typical patterns in the lineâ s current that allow for the detection of these faults. The occurrence of HIFs is detected with harmonic-current phase analysis and localized with recloser-sectionalizer technology as presented in this work. A sect

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26

Chakraborty, Saonti. "SHORT - RANGE ORDER IN THE NEMATIC PHASE OF REDUCED SYMMETRYTHERMOTROPIC MESOGENS." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1385158954.

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27

Pellegrene, Brittany Ann. "Optimization of Transition Temperatures and Tilt Angle in SmCP_A Phase Bent-Core Liquid Crystals." Kent State University Honors College / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1430258781.

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28

Miftah, el kheir Laila. "Smart devices for biomedical applications." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCD054.

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Dans cette thèse, nous nous sommes intéressés aux systèmes intelligents pour des applicationsmédicales et cosmétiques. Ainsi, nous avons conçu et réalisé trois instruments. Le premier estdédié à la mesure de la mouillabilité de la peau. L’originalité de ce dispositif réside en sa capacité àdonner une image 3D de la goûte de la surface de la peau explorée et de donner le comportementdynamique de la goûte. Cette stratégie nous donnera la possibilité de créer de nouvelles basesde données relatives à la mouillabilité de tout le corps humain. En effet, nous disposons que desdonnées sur la mouillabi

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29

Oliveira, Pablo Gustavo de. "Ângulo de fase como indicador de desfechos negativos em pacientes cirúrgicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/61738.

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Introdução: A Bioimpedância Elétrica (BIA) é um método fácil de usar, rápido, barato, não invasivo e de fácil reprodutibilidade utilizado para verificar as mudanças na composição corporal. O Ângulo de Fase (AF), obtido através da BIA, reflete a relativa contribuição dos fluidos e membranas para o corpo humano, sendo associado como um marcador prognóstico em diversas situações clínicas. Objetivos: Avaliar o AF como indicador de desfechos negativos em pacientes cirúrgicos (ocorrência de infecção e/ou morte e tempo de permanência hospitalar). Metodologia: Foram avaliados pacientes com idade de 18

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30

Li, Biao. "Hydrophobic-Hydrophilic Separation Process for the Recovery of Ultrafine Particles." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/103278.

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The demands for copper and rare earth elements (REEs) in the U.S. will keep rising due to their applications in green energy technologies. Meanwhile, copper production in the U.S. has been declining over the past five years due to the depletion of high-grade ore deposits. The situation for REEs is worse; there is no domestic supply chain of REEs in the U.S. since the demise of Molycorp, Inc. in 2016. Studies have shown that the rejected materials from copper and coal processing plants contain significant amounts of valuable metals. As such, this rejected material can be considered as potential

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31

JUSTICE, RYAN SCOTT. "INTERFACE MORPHOLOGY AND PHASE SEPARATION IN POLYMER DISPERSED LIQUID CRYSTAL (PDLC) COMPOSITES." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1163783056.

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32

Mickel, Walter. "Geometry controlled phase behavior in nanowetting and jamming." Phd thesis, Université Claude Bernard - Lyon I, 2011. http://tel.archives-ouvertes.fr/tel-00868861.

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This thesis is devoted to several aspects of geometry and morphology in wetting problems and hard sphere packings. First, we propose a new method to simulate wetting and slip on nanostructured substrates: a phase field model associated with a dynamical density theory approach. We showed omniphobicity, meaning repellency, no matter the chemical properties of the liquid on monovalued surfaces, i.e. surfaces without overhangs, which is in contradiction with the macroscopic Cassie-Baxter-Wenzel theory, can produce so-called We checked systematically the impact of the surface parameters on omniphob

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33

Rapolu, Prakash. "Capillarity Effect on Two-phase Flow Resistance in Microchannels." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204082574.

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34

Bhatta, Fanindra P. "Phase Separation in Binary Lipid Monolayers Bilayers: Experiment and Theory." Kent State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=kent1322501214.

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35

Rauchecker, Maximilian [Verfasser], Harald [Akademischer Betreuer] Garcke, Mathias [Akademischer Betreuer] Wilke, and Gieri [Akademischer Betreuer] Simonett. "Evolution of interfaces in two-phase problems with ninety degree contact angle / Maximilian Rauchecker ; Harald Garcke, Mathias Wilke, Gieri Simonett." Regensburg : Universitätsbibliothek Regensburg, 2019. http://d-nb.info/1201160642/34.

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36

Chae, Chun Sik. "Studies of the Interferometric Phase and Doppler Spectra of Sea Surface Backscattering Using Numerically Simulated Low Grazing Angle Backscatter Data." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1331074430.

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37

Bleier, Blake J. "Droplet-Based Approaches to Probe Complex Behavior in Colloidal Fluids with High Composition Resolution." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1173.

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In this work, microfluidic and millifluidic droplets are utilized to study and control complex fluid behavior with high composition resolution. Different techniques are used on two length scales to create unique approaches towards the same goal of merging droplet-based experiments with classical colloidal characterization experiments. First, a microfluidic dehydrating droplet device is characterized and a procedure established by concentrating a phase separating organic-inorganic system on chip and using geometric calculations to determine composition. The device is then expanded to a more com

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38

Tang, Xuanping. "Effect of Surface State on Water Wetting and Carbon Dioxide Corrosion in Oil-water Two-phase Flow." Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1304638556.

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39

Lopian, Tobias. "Characterization of a metal-extracting water-poor microemulsion." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT206/document.

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Le recyclage des terres rares à partir de déchets électroniques n'a toujours pas trouvé une réalisation industrielle significative. L'une des raisons est le manque de procédures de séparation optimisées en raison de connaissances fondamentales médiocres sur ces systèmes. En raison des similitudes chimiques et physiques de ces métaux, la conception d'une formulation efficace, adaptative et prédictive est toujours hors de portée des possibilités. L'interprétation supramoléculaire de la formation complexe dans la phase organique est de plus en plus importante au cours des dernières années. C'est

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40

Zhang, Di. "Analysis and Design of Paralleled Three-Phase Voltage Source Converters with Interleaving." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/27579.

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Three-phase voltage source converters(VSCs) have become the converter of choice in many ac medium and high power applications due to their many advantages, including low harmonics, high power factor, and high efficiency. Modular VSCs have also been a popular choice as building blocks to achieve even higher power, primarily through converter paralleling. In addition to high power ratings, paralleling converters can also provide system redundancy through the so-called (N+1) configuration for improved availability, as well as allow easy implementation of converter power management. Interleaving c

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41

Silva, Taís Kereski da. "Avaliação do comportamento do ângulo de fase e da dinamometria manual em pacientes submetidos à cirurgia cardíaca : estudo de coorte prospectivo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/148173.

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Introdução: O ângulo de fase (AF), derivado da análise de bioimpedância elétrica (BIA), tem sido interpretado como indicador de integridade da membrana celular; e a dinamometria manual têm sido usados como indicadores de prognóstico em algumas situações clínicas. Objetivos: avaliar o comportamento do AF e da dinamometria manual em pacientes submetidos à cirurgia cardíaca e associá-los com EuroSCORE e desfechos clínicos. Métodos: Estudo de coorte prospectivo com 50 pacientes submetidos à cirurgia cardíaca, com idade ≥18 anos, entre janeiro de 2015 e outubro de 2015. O AF e a dinamometria manual

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42

Wang, Chuanyun. "Investigation on Interleaved Boost Converters and Applications." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28635.

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With the rapid evolving IT technologies, today, the power factor correction (PFC) design is facing many challenges, such as power scalability, high entire-load-range efficiency, and high power density. Power scalability is a very desirable and cost-effective approach in the PFC design in order to keep up with serversâ growing power requirements. Higher power density can eventually reduce the converter cost and allows for accommodating more equipment in the existing infrastructures. Driven strongly by economic and environmental concerns, high entire-load-range efficiency is more and more requ

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43

Alquist, Keith Eldred III. "Structural studies of phase behavior in 1,6-dicyanohexane/urea and 1,6-diisocyanohexane/urea inclusion compounds." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18814.

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Master of Science<br>Department of Chemistry<br>Mark Hollingsworth<br>The crystal structures of the inclusion compounds 1,6-diisocyanohexane/urea and 1,6-dicyanohexane/urea were refined at several temperatures from X-ray data. These urea inclusion compounds are commensurate structures with host:guest ratios of 6:1. In contrast with the ordinary helical topology of the urea host, these structures have stacked loop topologies of the host hydrogen bonds and crystallize in space group P21/n. At room temperature, both structures are distorted along [001] from hexagonal metric symmetry. As in ea

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44

Korejčík, Michal. "Návrh transformátoru s regulací fáze pro laboratorní výuku." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219412.

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This thesis deals with a power flow control in the electric power system. An overview of FACTS devices is introduced; their basic characteristics as well as examples of their application are discussed. A significant part of this thesis investigates phase shifting transformers (PST´s), which seem to be suitable for implementation in the transmission system of the Czech Republic. The PST´s are useful devices that control active power flows on cross-border lines and regulate unwanted and unexpected power flows. Basic types and characteristics of the PST´s are discussed. In chapter 7 is designed l

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45

Park, Daniel Joseph. "B1 Mapping for Magnetic Resonance Imaging." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5750.

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Magnetic Resonance Imaging (MRI) is a non-ionizing form of medical imaging which has practical uses in diagnosing, characterizing, and studying diseases in vivo. Current clinical practice utilizes a highly trained radiologist to view MR images and qualitatively diagnose, characterize, or study a disease. There is no easy way to compare qualitative data. That is why developing quantitative measures in MRI show promise. Quantitative measures of disease can be compared across a population, MRI sites, and over time. Osteoarthritis is one disease where those who have it may benefit from the de

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46

Zhang, Xuning. "Passive Component Weight Reduction for Three Phase Power Converters." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/47788.

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Over the past ten years, there has been increased use of electronic power processing in alternative, sustainable, and distributed energy sources, as well as energy storage systems, transportation systems, and the power grid. Three-phase voltage source converters (VSCs) have become the converter of choice in many ac medium- and high-power applications due to their many advantages, such as high efficiency and fast response. For transportation applications, high power density is the key design target, since increasing power density can reduce fuel consumption and increase the total system efficie

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47

Dehouck, Victor. "Invariance Adiabatique dans les Mouvements Rythmiques Volontaires Humains." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2023. http://www.theses.fr/2023UBFCK066.

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Les mouvements humains sont toujours complexes. Même une tâche simple comme prendre un verre d'eau implique de nombreux degrés de liberté i.e., différents groupes de muscles, plusieurs articulations et un nombre infini de trajectoires possible pour le bras. Néanmoins, les mouvements sont facilement disponibles aux sujets sains et semble être naturellement optimisé par le système nerveux central. Cela est souvent modélisé par la minimisation d'un paramètre donné du système, tel que l'énergie ou l'à-coup, qui semblent être des candidats naturels. Malheureusement, ces approches sont souvent limit

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48

"Phase Oscillator." Master's thesis, 2015. http://hdl.handle.net/2286/R.I.29899.

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abstract: A control method based on the phase angle is used to control oscillating systems. The phase oscillator uses the sine and cosine of the phase angle to change key properties of a mass-spring-damper system, including amplitude, frequency, and equilibrium. An inverted pendulum is used to show a further application of the phase oscillator. Two methods of control based on the phase oscillator are used for swing-up and balancing of the pendulum. The first control method involves two separate stages. The scenarios where this control works are discussed. The second control method uses variabl

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49

Chen, Shan-Hui, and 陳姍慧. "Measurements of the Twist Angle, Azimuth Angle, Pretilt angle, Cell gap and phase retardation of Twisted-Nematic Liquid Crystal Cells." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/792fdy.

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碩士<br>國立聯合大學<br>LED光電製程產業專班<br>100<br>A novel method to accurately characterize the twisted nematic liquid crystal (TNLC) cell parameters was proposed by means of the common-path heterodyne interferometer. No prior knowledge of the cell parameters is required, the pretilt angle, azimuthal angle, twist angle, phase retardation and cell gap of the TN liquid crystal (TNLC) layer can be easily probed in the same experiment system. This proposed method based on a phase-sensitive optical heterodyne interferometer has higher detection sensitivity and higher immunity to environmental disturbances. It’

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50

Huang, Kuan-Hsiung, and 黃冠雄. "Design of Three-Phase AC Signal Generator with Controllable Frequency and Phase Angle." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/p4mv94.

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碩士<br>國立臺北科技大學<br>自動化科技研究所<br>105<br>Three-phase AC signal can be designed using analog-based and digital-based architecture. Controllable frequency and phase angle for the three-phase AC signal is often used in electronic equipment improvement and verification. Analog-based architecture is susceptible to interference from the external environment, resulting in signal distortion. Digital-based for the three-phase AC signal generates amplitude, frequency and phase in digital way. Digital-based for three-phase AC signals can reduce the impact of environmental interference, and produce a stable s

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