US 2009/0212758 A1 · METHOD AND APPARATUS FOR POWER CONVERSION WITH WIDE INPUT VOLTAGE RANGE

Abstract

A power conversion system includes an input terminal that is arranged to be connected to a voltage source; a transformer having a first winding connected to the input terminal and a second winding connected to an output terminal of the power conversion system, either the first winding or the second winding is provided with at least three taps that are arranged to divide the first winding or the second winding into at least two sub-windings; at least one tap switch connected to the at least two sub-windings; a control circuit connected to the at least one tap switch; and at least one switch connected to the at least one tap switch. The control circuit is arranged to control the at least one tap switch to control the turn ratio of the transformer.

Claims23

Dependent claims

A power conversion system comprising:

an input terminal that is arranged to be connected to a voltage source;
a transformer having a first winding connected to the input terminal and a second winding connected to an output terminal of the power conversion system, either the first winding or the second winding is provided with at least three taps that are arranged to divide the first winding or the second winding into at least two sub-windings;
at least one tap switch connected to the at least two sub-windings;
a control circuit connected to the at least one tap switch;
and
at least one switch connected to the at least one tap switch;
wherein
the control circuit is arranged to control the at least one tap switch to control a turn ratio of the transformer.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/390,355Filed 20 Feb 2009

Priority

22 Feb 2008

Published

27 Aug 2009

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02M 3/33569
Using semiconductor devices only: having several active switching elements
H02M 1/10
Details of apparatus for conversion: arrangements incorporating converting means for enabling loads to be operated at will from different kinds of…
H02M 3/33571
Having several active switching elements: half-bridge at primary side of an isolation transformer
H02M 3/33573
Having several active switching elements: full-bridge at primary side of an isolation transformer

Method and apparatus for power conversion with wide input voltage range

Life of this patent

Method and apparatus for power conversion with wide input voltage range

Life of this patent

Abstract

Claims23