Impedance measurement using line-to-line current injection

Details Impedance measurement using line-to-line current injection Impedance measurement using line-to-line current injection

2007-10-05

2010-06-29

Valone, Thomas (Department: 2831)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S107000

Reexamination Certificate

active

07746084

ABSTRACT:
An unbalanced line-to-line current is injected at an injected frequency in a three-phase ac circuit. A first set of voltages and currents are obtained. A first set of transformed voltages and transformed currents are produced. The circuit is injected with a second unbalanced line-to-line current at a frequency linearly independent of the injected frequency. A second set of voltages and current are obtained. A second set of transformed voltages and transformed currents are produced The impedance of a source portion and a load portion of the circuit are calculated using the first and second set of transformed voltages, and the first and second set of transformed currents.

REFERENCES:
patent: 6615147 (2003-09-01), Jonker et al.
patent: 6983211 (2006-01-01), Macfarlene et al.
patent: 7309974 (2007-12-01), Sarlioglu et al.
patent: 7355367 (2008-04-01), Sarlioglu et al.
patent: 7478003 (2009-01-01), Cowan et al.

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