Method and apparatus for controlling voltage reflections using a

Details Method and apparatus for controlling voltage reflections using a Method and apparatus for controlling voltage reflections using a

1996-08-23

1997-09-23

Hecker, Stuart N.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363132, 318811, H02M 112, H02P 528

Patent

active

056711301

ABSTRACT:
A method and apparatus for eliminating greater than twice over voltage by altering firing signals provided to a PWM inverter. The signals are altered by either limiting their maximum and minimum on-times or eliminating signal changes in a symmetrical fashion so that the overall fundamental component and magnitude of a resulting low frequency alternating voltage is substantially unaltered.

REFERENCES:
patent: 3800198 (1974-03-01), Graf et al.
patent: 4330817 (1982-05-01), Avar et al.
patent: 4763347 (1988-08-01), Erdman
patent: 4833586 (1989-05-01), Inaba et al.
patent: 5519301 (1996-05-01), Yoshida et al.
patent: 5592355 (1997-01-01), Ikkai et al.
patent: 5610806 (1997-03-01), Blasko et al.

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