Method for defining pulse width modulation (PWM) waveform patterns to produce inverter outputs having a low harmonic content

摘要

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.