Induction heating inverter

Details Induction heating inverter Induction heating inverter

1978-10-12

1981-06-23

Shoop, William M.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 96, H02M 7515

Patent

active

042754380

ABSTRACT:
A static power supply for converting DC power from a source to AC power at relatively high frequencies in a load. The static power supply is particularly useful for supplying power to induction heating loads operating at frequencies of 10 kHz. and higher. The DC supply is connected to supply substantially constant current to a controlled rectifier switching circuit. The controlled rectifiers are gated to produce alternating current in a commutating capacitor. The DC supply and switching circuit are connected to the load via a blocking capacitor so that the AC current component in the switching circuit appears as high frequency AC load current. The circuit arrangement imposes low operating stress levels on the controlled rectifiers, and provides a circuit turn-off time that is relatively independent of load.

REFERENCES:
patent: 3290581 (1966-12-01), Hooper
patent: 3349315 (1967-10-01), Studtmann
patent: 3422342 (1969-01-01), Jackson
patent: 3424973 (1969-01-01), Smyth
patent: 3454863 (1969-07-01), Hintz et al.
patent: 4028610 (1977-06-01), Cord'homme
patent: 4047092 (1977-09-01), Bendzsak

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