Active type harmonic suppression apparatus

Details Active type harmonic suppression apparatus Active type harmonic suppression apparatus

2007-11-27

2007-11-27

Patel, Rajnikant B. (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S034000, C307S105000, C330S149000

Reexamination Certificate

active

11177337

ABSTRACT:
An active type harmonic suppression apparatus, connected in parallel to a power feeder, supplies a compensation current for injecting into the power feeder such that a utility current of a power source is approached to a sinusoidal wave. The control circuit retrieves a load current, a utility current, an output current of the power converter, a power source voltage and a voltage of the dc power capacitor for calculating and sending a reference signal of compensation voltage to a pulse-width-modulation circuit which generates switching signals for the power converter. Furthermore, the harmonic suppression apparatus can provide a fixed or variable reactive power.

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patent: 6717465 (2004-04-01), Chou et al.
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