Method and apparatus for linearizing pulse width modulation in o

Details Method and apparatus for linearizing pulse width modulation in o Method and apparatus for linearizing pulse width modulation in o

1995-11-13

1997-08-12

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 95, H02M 324

Patent

active

056572166

ABSTRACT:
A method and/or apparatus for altering command voltages when a modulation index is greater than unity in order to maintain the linear relationship between the fundamental component of phase voltage and the command voltage in PWM inverter or converter usage. The method and/or apparatus calculates and provides an in phase waveform to be added to the command voltage prior to comparison of the command voltage to a carrier signal, the sum of the waveform and command voltage producing a modified command voltage which maintains said linear relationship.

REFERENCES:
patent: 4903187 (1990-02-01), Doi et al.
patent: 4994951 (1991-02-01), Iwasa et al.
patent: 5121043 (1992-06-01), Kerkman et al.
patent: 5153821 (1992-10-01), Blasko
patent: 5182701 (1993-01-01), Mochikawa et al.
patent: 5329217 (1994-07-01), Kerkman et al.

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