Title:
3-LEVEL POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/002016
Kind Code:
A1
Abstract:
In the present invention, a first filter circuit (100) includes a first capacitor (3) arranged between a second node (b) and a first node (a) to which the positive electrode of a DC power supply (2) is connected, and a second capacitor (4) arranged between the second node (b) and a third node (c) to which the negative electrode of the DC power supply (2) is connected. A bridge circuit (200) includes a first leg (RG1) and a second leg (RG2) that are arranged in parallel between the first node (a) and the third node (c). A clamp circuit (300) includes a third leg (RG3) including a first bidirectional switch (BD1) that is arranged between a fourth node (d), which is the midpoint of the first leg (RG1), and a fifth node (e), which is the midpoint of the second leg (RG2). A first reactor (13) is connected between the fourth node (d) and a sixth node (f), and a second reactor (14) is connected between the fifth node (e) and a seventh node (g). A fourth leg (500) includes a second bidirectional switch (BD2) that is arranged between the second node (b) and the fourth node (d) or the fifth node (e).
Inventors:
AMIMOTO TAKESHI (JP)
NISHIO NAOKI (JP)
NISHIO NAOKI (JP)
Application Number:
PCT/JP2019/026731
Publication Date:
January 07, 2021
Filing Date:
July 04, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/487; H02M7/5387
Domestic Patent References:
| WO2010095241A1 | 2010-08-26 | |||
| WO2017122241A1 | 2017-07-20 |
Foreign References:
| JP2015027170A | 2015-02-05 | |||
| US20160248334A1 | 2016-08-25 | |||
| JPH0898549A | 1996-04-12 | |||
| US20170077836A1 | 2017-03-16 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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