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US 2020/0336094 A1Published application
Power factor adjustment method and apparatus through the phase control in a transformer circuit
AssigneePhasetown, LLC
InventorsWon Don LEE, Hijung CHAI, Aquila Hwan LEE
Life of this patent
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Abstract
In this work, it is shown for the first time that the power and the impedance in a transformer circuit depend on the phase of the flux, hence the phase of the current. There is a phase change when the flux travels the magnetic core, and formulas for the effect of the phase change in the power and the impedance are derived. Therefore, the power factor can be adjusted so that the power is delivered more at the load than that, at the primary supplied by the source.
Claims7
A power factor adjustment apparatus, comprising:
- a magnetic core;
- a primary coil wound on the magnetic core configured to receive an alternating voltage from a source;
- wherein, a current is generated in a secondary coil of a transformer circuit or in a rotor of an induction machine by a magnetic flux propagated through the magnetic core,
- wherein, a phase change of the magnetic flux between the primary coil and the secondary coil is controlled so that a power factor of the transformer circuit or the induction machine is adjusted to a desired one among values that make a power difference function, representing difference between a power dissipated at a load at a secondary side and a power at the primary coil that the source provides, positive.
1 more element
Dependencies are inferred from the claim text.