Spelling suggestions: "subject:"pulse duration"" "subject:"hulse duration""
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Study and measurements of pulse broadening in optical fibersPuc, Andrej B. January 1980 (has links)
No description available.
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PWM-based asymmetrical rotor synchronous/industion driveSo, Ting-pat, Albert, 蘇廷弼 January 1988 (has links)
published_or_final_version / Electrical Engineering / Master / Master of Philosophy
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Multirate and block methods for modeling and control of pulse modulated systemsKhayatian, Alireza 08 1900 (has links)
No description available.
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Computer control of a pulse width modulated AC/DC converter under a variable frequency power supplySingh, Gunjan. January 1993 (has links)
Thesis (M.S.)--Ohio University, November, 1993. / Title from PDF t.p.
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Analise, sintese en beheer van stroomgevoede mutators met pulswydtemodulasie, as aktiewe filters in elektriese energienetwerkeVan Schoor, George 30 September 2014 (has links)
M.Ing. (Electrical & Electronic Engineering) / Three single phase current fed converters operating in pwm mode, are combined as an active power filter of 15 kVA. The undesired limit cycle shown by the system is eliminated by feedback loop compensation. Analog, computer and analytical models which predict remarkably similar system responses are used to investigate the technique. The analytical model involves describing function methods. The losses in the converters are modelled, and used as a feedback reference to allow losses in the system to be accurately covered from the supply. The system behaves as an accurate, fast active filter for distortion in power networks. Results illustrating this include the time and frequency response of the system for different reference currents. This is shown for the computer simulation as well as the practical system. Some more results include the response of the system to both a balanced and an unbalanced set of references in the three phases. The last results shown, illustrate the ability of the system to compensate a non-linear load.
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Aandrywingstelsels vir elektriese padvoertuie met draaiveldmasjiene gevoed uit wisselrigters met pulswydtemodulasieVan der Merwe, L. 25 September 2014 (has links)
M.Ing. (Electrical & Electronic Engineering) / Please refer to full text to view abstract
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Akkurate modellering en syferrekenaarsimulasie van drywingselektroniese mutators met pulswydtemodulasie en nie-lineêre netwerkelemente19 November 2014 (has links)
M.Ing. (Electrical and Electronic) / Please refer to full text to view abstract
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A delta-sigma pulse width modulator with pulse ditheringLewison, Richard S. 14 July 1997 (has links)
Pulse Width Modulation (PWM) has been used extensively for motor control, DC-AC
converters, DC-DC converters and in audio applications. The conventional method of
generating a pulse width modulated signal involves generating an accurate sawtooth or triangle
wave using analog circuits. In CMOS, being analog circuit intensive puts extra constraints
on the fabrication process used for manufacture, thus requiring a higher cost than
digital CMOS. Delta-Sigma Modulation on the other hand is analog intensive, but requires
only quality capacitor matching, which can be obtained with current digital CMOS processes.
This thesis describes a method to generate a digital PWM with pulse dithering
using a Delta-Sigma modulator. The Delta-Sigma modulator provides accuracy and allows
the circuit to be implemented in a digital CMOS process, while the pulse dithering in the
PWM spreads out harmonic noise generated from the PWM fundamental frequency. / Graduation date: 1998
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Distortion in pulse-duration modulationJanuary 1947 (has links)
E.R. Kretzmer. / "Reprinted from the Proceedings of the Institute of Radio Engineers ; v.35, no.11" / Includes bibliographical references. / Army Signal Corps Contract No. W-36-039 sc-32037.
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Hysteretic pulse width modulation with internally generated carrier for a boost dc-dc converterThekkevalappil, Soniya Noormuhamed. January 2005 (has links)
Thesis (M.S.)--University of Florida, 2005. / Title from title page of source document. Document formatted into pages; contains 74 pages. Includes vita. Includes bibliographical references.
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