Essays about: "Pulse Width Modulator"

Found 4 essays containing the words Pulse Width Modulator.

1. 1. FPGA Implementation of an Interpolator for PWM applications

   University essay from Institutionen för systemteknik

   Author : Jasko Bajramovic; [2007]
   Keywords : interpolator; half band FIR filter; MCM; Altera;

   Abstract : In this thesis, a multirate realization of an interpolation operation is explored. As one of the requirements for proper functionality of the digital pulse-width modulator, a 16-bit digital input signal is to be upsampled 32 times. To obtain the required oversampling ratio, five separate interpolator stages were designed and implemented. READ MORE

3. 2. Delta-Sigma Modulation Applied to Switching RF Power Amplifiers

   University essay from Institutionen för systemteknik

   Author : Tobias Andersson; Johan Wahlsten; [2007]
   Keywords : Delta-Sigma modulation; Power Amplifiers; RF; Switching Power Amplifiers;

   Abstract : Background: The task of this thesis is to investigate the possibility of using non-linear high efficiency switching power amplifiers with spectrally efficient varying envelope modulation schemes and, if possible, further investigate such a solution on a high level. The thesis focuses on the theory necessary to understand the technical issues related to power amplifiers and the procedures behind simulating and measuring the characteristics of different power amplifier configurations. READ MORE

4. 3. Linear Time Periodic Analysis of Dc-Dc converter

   University essay from Lunds universitet/Institutionen för reglerteknik

   Author : Simone Del Favero; [2006]
   Keywords : HTM; Harmonic Transfer Matrix; HTF; Harmonic Transfer Function; LTP; Linear Time Periodic Systems; PWM; Dc-Dc converter; Pulse Width Modulator; subharmonics; chaos; subharmonic estimation; Technology and Engineering;

   Abstract : Aim of this thesis is to analyze Dc-Dc converters by using the techniques of Linear Periodic Time varying (LTP) systems to estimate the amount of subharmonics injected in the load. Dc-Dc converters are used to transform a Dc input to a Dc output of different voltage. In this thesis we study in particular the so called "switch mode" converters. READ MORE

5. 4. Nonlinear Modeling of Locomotive Propulsion System and Control

   University essay from Lunds universitet/Institutionen för reglerteknik

   Author : Henrik Sandberg; [1999]
   Keywords : Technology and Engineering;

   Abstract : In this report the motor side of a converter driven AC-locomotive is studied and modeled. The motor side consists of an asynchronous electrical engine, an indirect self controller, a voltage converter, a Pulse Width Modulator(PWM) and the train mechanics. The converter is supplied with voltage from a DC-link. READ MORE