4. Flux-compensated current sensor
Principle
This type of current transducer operates in a closed loop. The principle is shown in figure 11 . The current to be measured I generates a flux in the magnetic circuit. It is compensated by the current i 2 from the amplifier to permanently cancel the ampere-turns :
The induction sensor detects induction in the air gap. The flux controller, whose reference setpoint is zero, generates the ampere-turns required...
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Flux-compensated current sensor
Open-loop current transducer associated with a transformer
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References
- (1) - - Les capteurs de courant de marque LEM : http://www.lem.com/
- (2) - - Capteur d'induction et de courant de marque Honeywell :
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