Power monitoring

Details Power monitoring Power monitoring

1995-07-07

1998-05-19

Hecker, Stuart N.

Electric power conversion systems

Phase conversion without intermediate conversion to d.c.

By induction-type converter

363 2, 363156, H02M 510

Patent

active

057544212

ABSTRACT:
Electrical power monitoring apparatus comprises a loop and a first conductor. A current sensor coupled to the first conductor provides a current signal that is representative of the current in the first conductor. A voltage sensor coupled at least to the first conductor provides a voltage signal that is representative of the voltage on the first conductor relative to that on a reference terminal. A multiplier coupled to the current sensor and voltage sensor has a power output which provides a power signal that is proportional to the instantaneous value of electrical power carried by the first conductor. A calibration circuit in the loop has an input coupled to the power output and has an adjustable output. A current regulator in the loop has an input coupled to the adjustable output to maintain the current in the loop between predetermined minimum and maximum loop current values.

REFERENCES:
patent: 4689735 (1987-08-01), Young
patent: 5109327 (1992-04-01), Griffin
patent: 5187654 (1993-02-01), Felippe

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