Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/003634
Kind Code:
A1
Abstract:
In the present invention, a single-phase bridge circuit (bridge circuit) includes an upper arm device 30H (first power device) and a lower arm device 30L (second power device) that is connected in series thereto. A gate drive circuit 50L charges and discharges capacitance of a gate of the lower arm device 30L (second power device). A clamp circuit allows conduction between the gate of the lower arm device 30L and a source of the lower arm device 30L (second power device) if a voltage VgsL between the gate and the source of the lower arm device 30L is less than a prescribed value Vthc. The clamp circuit comprises a clamp switch SWc (switching element) and a clamp resistance circuit Rc (first resistor).
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Inventors:
KAMIZUMA HIROSHI (JP)
NINOMIYA TAKANORI (JP)
MATSUI KATSUNORI (JP)
SHIMADA TAKAE (JP)
MABUCHI YUICHI (JP)
MEGURO HIKARU (JP)
NARUSHIMA JUN (JP)
AOKI KOSUKE (JP)
NINOMIYA TAKANORI (JP)
MATSUI KATSUNORI (JP)
SHIMADA TAKAE (JP)
MABUCHI YUICHI (JP)
MEGURO HIKARU (JP)
NARUSHIMA JUN (JP)
AOKI KOSUKE (JP)
Application Number:
PCT/JP2019/010388
Publication Date:
January 02, 2020
Filing Date:
March 13, 2019
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02M1/08; H02M7/48; H03K17/695; H03K17/16
Foreign References:
| JP2014075694A | 2014-04-24 | |||
| JP2013013051A | 2013-01-17 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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