Harmonics suppression control circuit for a PWM inverter

Details Harmonics suppression control circuit for a PWM inverter Harmonics suppression control circuit for a PWM inverter

1990-05-22

1991-03-19

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 96, H02M 744

Patent

active

050016199

ABSTRACT:
In an apparatus for carrying out PWM control of an inverter having a filter connected to the a.c. output side thereof, pulse patterns adapted for determining switching timings for canceling a specified harmonic component, e.g., the fifth order harmonic component included in a voltage on the output side of the filter without exerting an influence on the output voltage fundamental wave, are stored in advance into a memory with respect to various vector quantities of the specified harmonic component to select, from a plurality of pulse patterns stored in the memory, each time a pulse pattern for reducing the specified harmonic component. The inverter is subjected to PWM control in accordance with the pulse pattern thus selected.

REFERENCES:
patent: 4742441 (1988-05-01), Akerson
patent: 4758938 (1988-07-01), Kanazawa

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