Suppression of switching harmonics

Details Suppression of switching harmonics Suppression of switching harmonics

1990-04-25

1990-12-11

Stephan, Steven L.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 37, 363 39, H02M 112

Patent

active

049774921

ABSTRACT:
An inverter controller adjusts a selected switching pattern to accommodate minor variations and loads in the neighborhood of that pattern. The controller realizes in real-time the equivalent of an iterative solution of predetermined patterns. A number of representative pulse width modulated (PWM) patterns are selected for a range of loads and link ripple. A portion of the fundamental output is inserted onto the d.c. link to control one or more higher harmonics.

REFERENCES:
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patent: 4935859 (1990-06-01), Kirchberg et al.
patent: 4935860 (1990-06-01), Kirchberg et al.
patent: 4937720 (1990-06-01), Kirchberg

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