ENERGY EFFICIENT POWER SUPPLY SYSTEM OF INDUCTION HEATING UNIT Russian patent published in 2021 - IPC H02M7/217 H05B6/04 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to devices for converting alternating current into direct current using exclusively semiconductor components connected by a bridge circuit, and can be used in induction heating installations, as well as other power plants that require energy supply from current sources regulated in wide ranges with a small delay in its formation. The power system contains a phase currents and voltage meter, a phase-linear voltage converter, a phase-linear current converter, a voltage amplitude estimator, a current comparison signal calculation unit, a direct current sensor, a direct current PI controller, a current consumption estimation unit, a unit for calculating consumed current deviations, a hysteresis regulator unit, a switching combination selector, block of protection against current supply discontinuation, controlled rectifier, a three-phase line choke, a bank of capacitors, a DC reactor, choke discharge circuit, a saturation unit.

EFFECT: increased energy efficiency and electromagnetic compatibility of the electrical complex of the induction heating installation, increased formation rate of the supply current level.

1 cl, 2 dwg