Title: Multi-phase AC/AC step-down converter for distribution systems

Abstract

A step-down AC/AC converter for use in an electric distribution system includes at least one chopper circuit for each one of a plurality of phases of the AC power, each chopper circuit including a four-quadrant switch coupled in series between primary and secondary sides of the chopper circuit and a current-bidirectional two-quadrant switch coupled between the secondary side of the chopper circuit and a common node. Each current-bidirectional two-quadrant switch is oriented in the same direction, with respect to the secondary side of the corresponding chopper circuit and the common node. The converter further includes a control circuit configured to pulse-width-modulate control inputs of the switches, to convert a first multiphase AC voltage at the primary sides of the chopper circuits to a second multiphase AC voltage at the secondary sides of the chopper circuits, the second multiphase AC voltage being lower in voltage than the first multiphase AC voltage.

Inventors:

Aeloiza, Eddy C.; Burgos, Rolando P.

Issue Date:

2017-10-25

Research Org.:

ABB Schweiz AG, Baden, CH (Switzerland)

Sponsoring Org.:

USDOE

OSTI Identifier:

1404705

Patent Number(s):

9800167

Application Number:

14/175,461

Assignee:

ABB Schweiz AG

Patent Classifications (CPCs):

H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS

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H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS

H02M5/293 - using semiconductor devices only
H02M5/04 - by static converters

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DOE Contract Number:  

AR0000141

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 Feb 07

Country of Publication:

United States

Language:

English

Subject:

24 POWER TRANSMISSION AND DISTRIBUTION