Invention Grant
- Patent Title: Snubber circuit and power conversion apparatus
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Application No.: US16910099Application Date: 2020-06-24
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Publication No.: US11152851B2Publication Date: 2021-10-19
- Inventor: Ryuji Yamada
- Applicant: FUJI ELECTRIC CO., LTD.
- Applicant Address: JP Kanagawa
- Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee Address: JP Kanagawa
- Priority: JPJP2019-156553 20190829
- Main IPC: H02M1/34
- IPC: H02M1/34 ; H02M7/06

Abstract:
A snubber circuit is provided, including N charge paths having a positive-side capacitor, a first diode, and a negative-side capacitor connected in series between positive-side wiring and negative-side wiring, and conducts current from a positive side to a negative side; N+1 discharge paths including a second diode connected between a negative-side capacitor in kth charge path and a positive-side capacitor in k+1th charge path and conducts current from a negative side to a positive side via a negative-side capacitor or a positive-side capacitor; other charge paths including an inductor between a positive-side capacitor in ith charge path and a negative-side capacitor in i+1th charge path and conducts current from the positive side to the negative side, and the positive-side capacitor and negative-side capacitor included in the other charge path have a larger capacity than each of the positive-side capacitor and negative-side capacitor not included in the other charge path.
Public/Granted literature
- US20210067030A1 SNUBBER CIRCUIT AND POWER CONVERSION APPARATUS Public/Granted day:2021-03-04
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