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Matrix converter

A matrix converter and reactor technology, applied in the field of matrix converters, can solve problems such as cooling efficiency deterioration and temperature rise

Active Publication Date: 2012-02-01
YASKAWA DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Usually, when three AC reactors are arranged in order along the flow direction of the cooling air, the cooling efficiency of the AC reactor on the downstream side deteriorates and its temperature rises.

Method used

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Embodiment Construction

[0017] Embodiments embodying the present invention will be described with reference to the drawings. Also, for the sake of illustration, define Figure 2 to Figure 8 The upper A, the lower B, the left C, the right D, the front E, and the rear F are shown. However, depending on the actual usage status of the matrix converter, the setting method differs in each figure. For example, there are cases where the Figure 2 to Figure 8 Above is shown as front, below as rear, front as below, and rear as above. In addition, in each figure, illustration of a portion irrelevant to the description may be omitted.

[0018] The matrix converter 10 according to the first embodiment of the present invention can convert input 3-phase AC power into AC power with different frequencies and voltages. The capacity of matrix converter 10 is, for example, 160 kW.

[0019] As shown in FIG. 1(A), the matrix converter 10 includes first to third AC reactors L1, L2, and L3, capacitors C1, C2, and C3, an...

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Abstract

A matrix converter includes first to third AC reactors (L1, L2, L3) connected in series with first- to third-phase outputs of three-phase AC electric power (11), and a first cooling fan (17) that generates cool air for cooling the first to third AC reactors (L1, L2, L3). The first to third AC reactors (L1, L2, L3) are arranged side-by-side in a direction intersecting a direction in which the cool air flows.

Description

technical field [0001] The disclosed embodiments relate to a matrix converter. Background technique [0002] Japanese Laid-Open Publication No. 2009-77518 published on April 9, 2009 describes a power converter. In the housing of this power converter, three AC reactors constituting an AC filter are provided on the input side of an IGBT (Insulated Gate Bipolar Transistor) module. Furthermore, a cooling fan for discharging heat inside the housing to the outside is provided on the housing. [0003] Three AC reactors are arranged in sequence along the flow direction of the cooling air generated by the cooling fan. [0004] Usually, when three AC reactors are arranged in order along the flow direction of the cooling air, the cooling efficiency of the AC reactor on the further downstream side deteriorates, and the temperature thereof rises. Here, the inductance of the AC reactor has a temperature characteristic that becomes extremely small when a certain temperature is exceeded....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/06H02M1/00
CPCH02M5/271H02M7/003
Inventor 岸本一孝古城真人内野贵裕
Owner YASKAWA DENKI KK
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