Static converter switch with fast recovery freewheel diode

Details Static converter switch with fast recovery freewheel diode Static converter switch with fast recovery freewheel diode

1984-07-03

1986-02-11

Salce, Patrick R.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

307253, 363 97, H02M 7515

Patent

active

045702136

ABSTRACT:
A static converter, including at least one pair of mutually co-acting switching transistors (TR1, TR2), of which the first switching transistor (TR1) is controlled with a frequency exceeding the control frequency of the second switching transistor (TR2). A diode (D1, D2) is connected between the emitter and collector of respective switching transistors. The noval feature of the invention resides in that a voltage source (N1, P) is activated when the first switching transistor (TR1) is energized to its conducting mode (I.sub.R) and to supply a reverse recovery current (I.sub.rr) through the diode (D2) of the second switching transistor in the reverse direction of the diode.

REFERENCES:
patent: 4245288 (1981-01-01), McLyman
patent: 4346309 (1982-08-01), Garrett et al.
patent: 4358820 (1982-11-01), Lipman
patent: 4376296 (1983-03-01), Bhagwat et al.
patent: 4405977 (1983-09-01), Bhagwat et al.
patent: 4414479 (1983-11-01), Foley

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