POWER CONVERTER

• US 20110267848A1
• Filed: 03/31/2011
• Published: 11/03/2011
• Est. Priority Date: 04/28/2010
• Status: Abandoned Application

• Current Assignee: Shinjo Holdings Company Limited
• Original Assignee: Shinjo Holdings Company Limited
• Inventors: SATAKE, Yuki, Teratani, Shigeki
• Application Number:
  US13/077,652
• Publication Number:
  US 20110267848A1
• Time in Patent Office: Days
• US Class Current: 363/21.12
• CPC Class Codes: H01F 2038/026 non-linear inductive arrangements for converters, e.g. with additional windings
• CPC Class Codes: H01F 27/34 Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
• CPC Class Codes: H01F 3/14 Constrictions; Gaps, e.g. air-gaps in magnetic shunt paths H01F3/12
• CPC Class Codes: H01F 30/12 Two-phase, three-phase or polyphase transformers
• CPC Class Codes: H02M 3/1584 with a plurality of power processing stages connected in parallel

Abstract

Reduction of power loss and operation in a two-phase mode are made possible.

The power converter of present invention is a power converter composed of a core formed by a magnetic material and a winding wire wound at a predetermined position of the core and operating in a two-phase mode, in which the core is a closed magnetic path constituted by a center leg, a cylindrical first outer leg arranged in parallel with the center leg and around which the winding wire is wound, and a second outer leg arranged at a position opposite to the first outer leg with respect to the center leg.

Claims

1. A power converter comprising a core formed by a magnetic material and a winding wire wound around a predetermined position of the core and operating in a two-phase mode, characterized in that:

said core is a closed magnetic path constituted by;

a center leg;

a first cylindrical outer leg arranged in parallel with the center leg and around which the winding wire is wound; and

a second outer leg arranged at a position opposite to said first outer leg with respect to said center leg.

2. The power converter according to claim 1, wherein said center leg has a cylindrical shape.

3. The power converter according to claim 1, wherein said core can be separated.

4. The power converter according to claim 1, wherein said power converter boosts an output voltage of a DC power supply and is composed of;

two transducers whose respective primary windings are connected to a positive electrode of a positive power supply of said DC power supply;

two switching elements connected between the respective primary windings of the transducers and a negative electrode of the DC power supply;

an inductor portion connected between secondary winding of the first transducer and secondary winding of the second transducer; and

two serial circuits connected between the respective primary windings of said two transducers and the negative electrode of said DC power supply, respectively, and including a diode and a capacitor, wherein

the secondary windings of said two transducers and said inductor portion are connected in series to each other so as to form a closed loop;

the respective capacitors included in said two serial circuits share one smoothing capacitor; and

said core is composed of two outer legs around which the primary windings of said two transducers are wound, respectively, and said center leg.

5. The power converter according to claim 1, wherein the entire shape of said core is a rounded shape.

6. The power converter according to claim 1, wherein said power converter is a DC/DC converter.

7. The power converter according to claim 1, wherein said power converter is an inverter circuit device.

8. The power converter according to claim 7, wherein

said power converter is mounted on any one of an electric vehicle, a robot, a home electric appliance, a solar generator, a motor and generator, a large-capacity power source, medical equipment, a liquid-crystal TV, and an LED illumination power source.