Excitation controller

Details Excitation controller Excitation controller

2005-01-25

2005-01-25

Martin, David (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

C318S712000, C318S713000, C322S059000, C322S028000, C322S021000

Reexamination Certificate

active

06847184

ABSTRACT:
An excitation controller controls excitation of a synchronous machine, which is connected to a power transmission system through a transformer, so that a high-side voltage of the transformer is maintained at a target voltage with high accuracy. An output terminal target voltage of the synchronous machine is set to precisely compensate for a voltage drop in the transformer, corresponding to the transformer phase angle variation. To achieve this result, the excitation controller detects an output terminal voltage and an output current of the synchronous machine and calculates active and reactive currents of the output current, sets the output terminal target voltage of the synchronous machine from the active and reactive currents, the high-side voltage of the transformer, and the reactance of the transformer, and controls excitation of the synchronous machine to compensate for the voltage drop in the transformer corresponding to phase angle variation of the transformer.

REFERENCES:
patent: 3621369 (1971-11-01), Masaomi et al.
patent: 4245182 (1981-01-01), Aotsu et al.
patent: 4329637 (1982-05-01), Kotake et al.
patent: 4350947 (1982-09-01), Uenosono et al.
patent: 4701689 (1987-10-01), Yuan et al.
patent: 4714869 (1987-12-01), Onitsuka
patent: 4812729 (1989-03-01), Ito et al.
patent: 4816696 (1989-03-01), Sakayori et al.
patent: 4843296 (1989-06-01), Tanaka
patent: 4920277 (1990-04-01), Kuwabara et al.
patent: 5148093 (1992-09-01), Bando et al.
patent: 5440222 (1995-08-01), Tanaka et al.
patent: 5604420 (1997-02-01), Nambu
patent: 5977731 (1999-11-01), Xia et al.
patent: 6265852 (2001-07-01), Kitamura et al.
patent: 6285168 (2001-09-01), Davis
patent: 6323618 (2001-11-01), Kitamura et al.
patent: 6465979 (2002-10-01), Leijon et al.
patent: 6525504 (2003-02-01), Nygren et al.
Kitamura et al., “Improvement of Voltage Stability by the Advanced High Side Voltage Control Regulator,” IEEE, Jun. 2000.

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