Boost-buck rectifier bridge circuit topology with diode decouple

Details Boost-buck rectifier bridge circuit topology with diode decouple Boost-buck rectifier bridge circuit topology with diode decouple

1994-09-23

1997-04-29

Krishnan, Aditya

Electric power conversion systems

Current conversion

Using semiconductor-type converter

H02M 7525

Patent

active

056255497

ABSTRACT:
A boost-buck rectifier bridge circuit topology having two diode decoupled boost stages is formed as an H-shaped bridge with the alternating voltage source comprising the center leg and the first and second H-shaped bridge arms comprising a series connected SCR and bridge diode in each of the legs and a third and fourth bridge diode in the respective third and fourth arms of the H-shaped bridge. The first boost stage is coupled between the junction of the first SCR and first bridge diode and the negative polarity DC voltage bus and a second boost stage is coupled between the positive polarity DC voltage bus and the junction of the second SCR and second bridge diode in the second arm of the H-shaped bridge so that the first boost stage is decoupled by the first bridge diode and the second boost stage is decoupled by the second bridge diode whereby the load current delivered by the circuit is carried solely by the bridge diodes and not the boost stage switching devices.

REFERENCES:
patent: 5309345 (1994-05-01), Nakamura et al.

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