Reactor, converter, and power conversion device

Patent metadata

Field	Value
Publication number	US-9336942-B2
Application number	US-201314436223-A
Country	US
Kind code	B2
Filing date	Oct 23, 2013
Priority date	Nov 1, 2012
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

A reactor that includes a coil with a pair of coil elements connected to each other, a magnetic core with a pair of interior core portions disposed inside the coil elements and an exterior core portion which connects the interior core portions to form a closed magnetic path, and an insulator interposed between the coil and the magnetic core.

First claim

The invention claimed is:

1. A reactor comprising:
a coil with a pair of coil elements connected to each other,
a magnetic core with a pair of interior core portions disposed inside the coil elements and an exterior core portion which connects the interior core portions to form a closed magnetic path, and
an insulator interposed between the coil and the magnetic core,
wherein the reactor is provided with a sensor for measurement of a physical quantity during operation of the reactor, and a sensor holder which includes a member independent from the insulator and which holds the sensor,
wherein each coil element of the pair of coil elements has a tubular body formed by spirally winding a wire and has an end surface shaped to have rounded corner portions with rounded corners, and the coil elements are disposed in parallel such that axes of the coil elements are disposed in parallel to each other,
wherein the sensor holder is provided with an engaging portion which engages with the insulator to prevent the sensor holder form being detached from the insulator, and
wherein the sensor is disposed, with the sensor holder which is engaged at the engaging portion with the insulator, in a trapezoidal space interposed between the rounded corner portions which are disposed to face each other in the coil elements.

2. The reactor according to claim 1 ,
wherein the sensor holder is provided with a holding portion covering the sensor, and
wherein the holding portion has a length that is at least a total length, in axial direction, of the sensor.

3. The reactor according to claim 2 ,
wherein the holding portion covers a portion of a wire connected to the sensor.

4. The reactor according to claim 1 ,
wherein the sensor holder is provided with a partitioning portion disposed between the coil elements.

5. A converter provided with the reactor according to claim 1 .

6. A power conversion device provided with the converter according to claim 5 .

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries

Inventors

• Yamada Yukinori
• Ito Atsushi

Classifications

• H02M3/155

  using semiconductor devices only · CPC title

• H01F27/02

  Casings · CPC title

• H01F2027/406

  Temperature sensor or protection · CPC title

• H01F37/00

  Fixed inductances not covered by group H01F17/00 · CPC title

• H02M3/158

  including plural semiconductor devices as final control devices for a single load · CPC title