magnetizing current

magnetizing current

[′mag·nə‚tiz·iŋ ‚kə·rənt]
(electricity)
The current that flows through the primary winding of a power transformer when no loads are connected to the secondary winding; this current establishes the magnetic field in the core and furnishes energy for the no-load power losses in the core. Also known as exciting current.
References in periodicals archive ?
m] is the magnetic moment of the molecular magnetizing current [i.
sd] that produces the magnetizing current and the stator current component [i.
To get output voltage from the machine, an exciting or magnetizing current is needed.
Both voltage and current observers estimate magnetizing current of the motor based on equation (3), this estimation with voltage model depends on the accuracy of speed [3].
At the top of the curve, at magnetic saturation, if the magnetizing current is stopped, the curve does not trace itself back to the origin.
The ACS310 also features an energy optimizer that minimizes motor losses and noise while reducing motor magnetizing current (especially on partial loads).
With the energy optimizer, when a pump system operates at partial load, the motor magnetizing current is reduced, thus lowering the losses of the motor and drive.
First, the DC component of the magnetizing current is lower than or equal to that of the center-tapped configuration, which makes it possible for the smaller core to be used for the transformer.
The transformer magnetizing current iLm(t) and leakage inductor current iLr(t) are constant during the time interval [t.
Monitors also check the magnetizing current to ensure the proper holding strength is maintained and to prevent overheating.
Driving the primary with an AC signal while the secondary is left open will cause only the magnetizing current to flow.