Title:
FC-TYPE 3-LEVEL POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/189041
Kind Code:
A1
Abstract:
This FC-type 3-level power conversion device turns on or off first to fourth semiconductor switching elements T1-T4 on the basis of the comparison between flying capacitor voltage Vfc and a half of high-voltage side filter capacitor voltage Va, the comparison between the high-voltage side filter capacitor voltage Va and the flying capacitor voltage Vfc plus low-voltage side filter capacitor voltage Vb, the comparison between the flying capacitor voltage Vfc and the low-voltage side filter capacitor voltage Vb, and the comparison between the low-voltage side filter capacitor voltage Vb or the high-voltage side filter capacitor voltage Va and a filter capacitor voltage command value, thereby flowing current through a path including a filter reactor L and charging a flying capacitor FC and charging a low-voltage side filter capacitor C2 or a high-voltage side filter capacitor C1 to predermined values. This allows the FC-type 3-level power conversion device to charge both the flying capacitor and the filter capacitor without outputting current to the outside of the device.
Inventors:
OI KAZUNOBU (JP)
KOBORI KENJI (JP)
KOBORI KENJI (JP)
Application Number:
PCT/JP2020/003319
Publication Date:
September 24, 2020
Filing Date:
January 30, 2020
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD (JP)
International Classes:
H02M3/155; H02M7/48; H02M7/483
Foreign References:
| JP2016059132A | 2016-04-21 | |||
| JP2015216789A | 2015-12-03 | |||
| US20180006559A1 | 2018-01-04 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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