Chopper power supply adapted to enable low-voltage switching to

Details Chopper power supply adapted to enable low-voltage switching to Chopper power supply adapted to enable low-voltage switching to

1995-03-02

1997-05-06

Hecker, Stuart N.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363132, H02M 700

Patent

active

056277431

ABSTRACT:
A chopper power supply of the invention includes a bridge arm constituted by two switching sections in series and receiving a DC voltage. Each switching section includes switching means in parallel with a capacitor, the switching means being controlled so as to supply an AC voltage to a load. A pulse current source is connected to the load, the pulse current source being constituted by an LC-type circuit dimensioned so that the current flowing through the circuit is delayed by .pi./2 relative to the voltage applied to the load so as to deliver current pulses for alternately charging and discharging each of the capacitors on the edges of the AC voltage.

REFERENCES:
patent: 4230955 (1980-10-01), Johannessen
patent: 5485365 (1996-01-01), Dan-Harry
patent: 5532919 (1996-07-01), Gegner
21st Annual IEEEPower Electronics Specialists Conference PESC '90 Record, 11 Jun. 1990, San Antonio, Texas, pp. 298-304, XP173920, Ferreira, "A generic soft switching converter topology with a parallel nonlinear network for high power application".
18th Annual Power Electronics Specialists Conference PESC '87 Record, 11 Jun. 1987, Blacksburg, VA pp. 424-430 -Patterson, "Pseudo-resonant full bridge DC/DC converter".

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