Method for defining pulse width modulation (PWM) waveform patter

Details Method for defining pulse width modulation (PWM) waveform patter Method for defining pulse width modulation (PWM) waveform patter

1991-10-04

1993-06-29

Stephan, Steven L.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

323207, 363 98, H02M 112

Patent

active

052240282

ABSTRACT:
A method for defining a pulse width modulation (PWM) waveform pattern to control the switching bridges in a power inverter system to produce a low harmonic content output voltage signal includes assigning a waiting factor to each harmonic produced by the switching bridges in the power inverter system. Harmonics reduced by the power inverter system are identified and other harmonics are selected to be reduced. The selected harmonics are represented one-for-one by a corresponding set of equations and the equations are solved by each of the switch points in the PWM waveform pattern. A program for finding the switch points is also presented.

REFERENCES:
patent: 3614590 (1971-10-01), Kernick
patent: 4808903 (1989-02-01), Matsui et al.
patent: 4954726 (1990-04-01), Lipman et al.
patent: 4977492 (1990-12-01), Kirchberg, Jr. et al.

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