Autotransformer-based system and method of current harmonics...

Details Autotransformer-based system and method of current harmonics... Autotransformer-based system and method of current harmonics...

2005-03-01

2005-03-01

Nguyen, Tuyen T. (Department: 2832)

Inductor devices

With means to change coil length or connections

Plural coils

C363S044000

Reexamination Certificate

active

06861936

ABSTRACT:
A system and method for reducing harmonics in a circuit is disclosed. The system comprises a main rectifier,(n3-1)auxiliary rectifiers connected to the main rectifier, and an autotransformer connected to both the main rectifier and the auxiliary rectifiers which provides 2n-pulse rectification where n equals the number of phases of the system. The autotransformer generates(n3-1)auxiliary voltage sets, each auxiliary voltage set having an auxiliary voltage amplitude, k, and an auxiliary voltage phase, α, whereink=4+2⁢3⁢cos⁢(θ-7⁢π6)and whereinα=sin-1⁢(3⁢sin⁢ ⁢θ-0.5k)assuming a main voltage amplitude of one and a main voltage phase of ninety degrees, whereinθ=180⁢°nand its integral multiples for all possible real values of k. The main rectifier has a main rectifier power rating, PmdbwhereinPmdb≥(n+32⁢n)times the load power, and the auxiliary rectifiers each have an auxiliary power rating, Pauxdb, whereinPauxdb≤(32⁢n)times the load power.

REFERENCES:
patent: 4013942 (1977-03-01), Boshnyaga et al.
patent: 4030017 (1977-06-01), Brown
patent: 4330818 (1982-05-01), Peschel
patent: 4866591 (1989-09-01), Cook et al.
patent: 4876634 (1989-10-01), Paice
patent: 5124904 (1992-06-01), Paice
patent: 5455759 (1995-10-01), Paice
patent: 5619407 (1997-04-01), Hammond
patent: 5625543 (1997-04-01), Barrett
patent: 5903066 (1999-05-01), Enjeti et al.
patent: 6101113 (2000-08-01), Paice
patent: 6191968 (2001-02-01), Paice
patent: WO 9819385 (1997-10-01), None
patent: WO 9819385 (1998-05-01), None

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