Programmed-waveform pulse-width modulation techniques for the control of converter harmonics
Abstract
Power converters generate harmonics which produce detrimental effects in energy delivery networks. A methodology employing Pulse-Width Modulation (PWM) is developed for optimizing a converter's input current spectrum to minimize these detrimental effects. The methodology employs a modulation technique called Programmed-Waveform (PWM) which independently defines each switching transition. Various waveform structures are possible and they are identified, analyzed, and contrasted. Objective functions, relating harmonic problems at a converter's terminals or at some point within a network to the harmonic currents injected, are identified. A numerical method is developed for minimizing these objective functions. This numerical method is applied to a computer and used to contrast the performance of optimized PWM converters to conventional converters.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1978
- Bibcode:
- 1978PhDT........46P
- Keywords:
-
- Pulse Modulation;
- Pulse Width Amplitude Converters;
- Waveforms;
- Frequency Converters;
- Harmonic Generators;
- Numerical Analysis;
- Electronics and Electrical Engineering