Design of high fidelity pulse width modulation inverter

dc.contributor.advisorDavis, John H.
dc.creatorJiang, Gang
dc.date.accessioned2019-11-12T22:56:35Z
dc.date.available2019-11-12T22:56:35Z
dc.date.issued2004-12-18
dc.description.abstractPulse-width modulation (PWM) is well established in power electronics as a basis for inverters with sinusoidal output voltages. It provides two crucial advantages: high power delivery efficiency and easy digital-to-analog demodulation. Thus PWM can be applied in audio signal processing chain as a switching function for a bridge inverter, and a low-pass filter extracts the audio. Meanwhile, this process is nonlinear. So it has often been assumed that implementation of PWM in audio benefited us with its efficiency improvement at the price of distortion. This work explored how PWM can be applied to provide high fidelity audio signal processing with nonlinearity compensation. The distortion effects are analyzed in depth. Noise-shaping processes that reduce quantization errors in the process are described. An inverter is presented that processes information directly in digital form PWM sequence with accurate correction added in the front end noise shaping module. The signal processing chain from digital input to the inverter gate drives is entirely digital. Simulation results confirm that a PWM inverter with efficient nonlinearity compensation can achieve high fidelity in practice.en_US
dc.description.departmentElectrical and Computer Engineeringen_US
dc.format.mediumelectronicen_US
dc.identifier.urihttps://hdl.handle.net/2152/78368
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/5455
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.rights.restrictionRestricteden_US
dc.subjectSignal chainen_US
dc.subjectPulse-width modulationen_US
dc.subjectNoise shapingen_US
dc.titleDesign of high fidelity pulse width modulation inverteren_US
dc.typeThesisen_US
dc.type.genreThesisen_US
thesis.degree.departmentElectrical and Computer Engineeringen_US
thesis.degree.disciplineElectrical and Computer Engineeringen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Science in Engineering.en_US
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