Electricity: power supply or regulation systems – For reactive power control – Using impedance
Reexamination Certificate
2007-06-01
2009-12-29
Han, Jessica (Department: 2838)
Electricity: power supply or regulation systems
For reactive power control
Using impedance
C363S096000, C307S102000
Reexamination Certificate
active
07638986
ABSTRACT:
In a control system for a static var compensator that performs phase control of a current of a reactor for each phase by a thyristor and thus controls reactive power, a detecting unit that detects a tertiary harmonic current flowing through each phase of the static var compensator is provided, and on the basis of the tertiary harmonic current flowing through each phase detected by the detecting unit, the thyristor of each phase is controlled so that the quantity of generated tertiary harmonic current of each phase becomes equal, and therefore an outflow of the tertiary harmonic current toward a system can be restrained by an inexpensive method.
REFERENCES:
patent: 3963978 (1976-06-01), Kelley et al.
patent: 4686447 (1987-08-01), Takeda et al.
patent: 4755738 (1988-07-01), Shimamura et al.
patent: 5969509 (1999-10-01), Thorvaldsson
patent: 61-221533 (1986-10-01), None
R. Mohan Mathur et al., “Thyristor-Based Facts Controllers for Electrical Transmission Systems,” 2002, pp. 47-55, and 214, IEEE Press.
Takeda Masatoshi
Temma Koji
Buchanan & Ingersoll & Rooney PC
Han Jessica
Mitsubishi Electric Corporation
Pham Emily
LandOfFree
Control system for static VAR compensator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control system for static VAR compensator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for static VAR compensator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4116843