REACTOR AND POWER SUPPLY DEVICE EMPLOYING THE SAME

• US 20150022000A1
• Filed: 03/13/2012
• Published: 01/22/2015
• Est. Priority Date: 03/13/2012
• Status: Active Grant

• Current Assignee: Toshiba Mitsubishi-Electric Industrial Systems Corporation (Toshiba Corporation)
• Original Assignee: Toshiba Mitsubishi-Electric Industrial Systems Corporation (Toshiba Corporation)
• Inventors: Kinoshita, Masahiro
• Granted Patent: US 9,824,813 B2
• Time in Patent Office: Days
• US Class Current: 307/52
• CPC Class Codes: H01F 27/24 Magnetic cores
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• CPC Class Codes: H01F 37/00 Fixed inductances not covered by group H01F17/00
• CPC Class Codes: H02M 3/1584 with a plurality of power processing stages connected in parallel

Abstract

A reactor includes an annular iron core and four coils separately wound around the iron core. The four coils have first electrodes connected to output terminals of four choppers, respectively, and second electrodes each connected to a load. Therefore, the four choppers can be connected in parallel to the load by one reactor.

Claims

1. A reactor by which N (N is an integer of 2 or more) power supplies are connected in parallel to a load, said reactor comprising:

an annular iron core; and

N coils separately wound around said iron core,

said N coils having first electrodes connected to output terminals of said N power supplies, respectively, and second electrodes each connected to said load.

2. The reactor according to claim 1, further comprising:

N first terminals connected to the first electrodes of said N coils, respectively; and

a second terminal connected to the second electrodes of said N coils, wherein

said N first terminals are connected to the output terminals of said N power supplies, respectively, and

said second terminal is connected to said load.

3. A power supply device comprising:

the reactor according to claim 1; and

said N power supplies.

4. The power supply device according to claim 3, wherein each of said N power supplies is a chopper converting a first DC voltage into a second DC voltage.

5. The power supply device according to claim 3, wherein each of said N power supplies is an inverter converting a DC voltage into an AC voltage.

6. The power supply device according to claim 3, wherein each of said N power supplies is a converter converting an AC voltage into a DC voltage.

7. A reactor by which N (N is an integer of 2 or more) power supplies are connected in parallel to a load, said reactor comprising:

an annular iron core ; and

N first coils and N second coils separately wound around said iron core,

said N first coils having first electrodes connected to first output terminals of said N power supplies, respectively, and second electrodes each connected to one terminal of said load,

said N second coils having first electrodes connected to second output terminals of said N power supplies, respectively, and second electrodes each connected to the other terminal of said load , and

the first coil and the second coil connected to the same power supply forming a normal mode coil.

8. The reactor according to claim 7, further comprising:

N first terminals connected to the first electrodes of said N first coils, respectively;

N second terminals connected to the first electrodes of said N second coils, respectively;

a third terminal connected to the second electrodes of said N first coils; and

a fourth terminal connected to the second electrodes of said N second coils, wherein

said N first terminals are connected to the first output terminals of said N power supplies, respectively,

said N second terminals are connected to the second output terminals of said N power supplies, respectively,

said third terminal is connected to one terminal of said load , and

said fourth terminal is connected to the other terminal of said load.

9. The reactor according to claim 7, wherein

said iron core includes first and second leg portions, and a yoke portion magnetically coupling the first and second leg portions,

said N first coils are separately wound around said first leg portion,

said N second coils are separately wound around said second leg portion, and

said first coil and said second coil forming said normal mode coil are arranged adjacent to each other.

10. A power supply device comprising:

the reactor according to claim 7, and

said N power supplies.

11. The power supply device according to claim 10, wherein each of said N power supplies is a chopper converting a first DC voltage into a second DC voltage.

12. The power supply device according to claim 10, wherein each of said N power supplies is an inverter converting a DC voltage into an AC voltage.

13. The power supply device according to claim 10, wherein each of said N power supplies is a converter converting an AC voltage into a DC voltage.