The excitation current increases sharply and forms magnetizing inrush current
where amplitude [i.sub.p] may be up to 6-8 times the rated current.
Having in mind that the inrush current
is a stochastic variable dependent upon uncertain parameters, the algorithm has been tested by signals obtained in two different ways.
Calculation of inrush current
with a neutral resistor
NEMA Premium sets standards for temperature, torque, inrush current
, power factor and overall design parameters.
The PWR-01 also is equipped with a soft-start function that limits the inrush current
, minimizing any harmful effects to DUTs such as DC motors.
Current transformer saturation caused by the long-lasting inrush current
can decrease the second harmonic content, potentially causing the second harmonic restraint algorithm to fail [8-10].
* ASGATE FET control, which actively controls inrush current
to prevent FET damage.
5X thinner than traditional 1U power supplies, Vicor's PFM AC-DC converters integrate system functions including EMI filtering, transient protection and inrush current
limiting to reduce design time and design risk.
The waveshape, magnitude and duration of the transformer magnetizing inrush current
are dependent on several factors, among them are the remanent flux and initial phase of the voltage at the instant of switch-on ,.