Title:
整流装置及び回転電機
Document Type and Number:
Japanese Patent JP6988518
Kind Code:
B2
Abstract:
A rectifier has a rectification circuit configured to rectify multi-phase alternating current generated by a rotating electric machine into direct current. The rectifier includes upper-arm semiconductor switching elements included in an upper arm of the rectification circuit, upper-arm protection diodes included in the upper arm and each being electrically connected in parallel with one of the upper-arm semiconductor switching elements, lower-arm semiconductor switching elements included in a lower arm of the rectification circuit, and lower-arm protection diodes included in the lower arm and each being electrically connected in parallel with one of the lower-arm semiconductor switching elements. Each of the upper-arm and lower-arm protection diodes is configured to have, when a reverse voltage higher than a breakdown voltage of the protection diode is applied to the protection diode, an operating resistance that is higher than three times an operating resistance of any of the upper-arm and lower-arm semiconductor switching elements.
Inventors:
Toshinori Maruyama
Application Number:
JP2018011147A
Publication Date:
January 05, 2022
Filing Date:
January 26, 2018
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H02M7/12; H02M7/21
Domestic Patent References:
| JP2015116053A | ||||
| JP201658594A | ||||
| JP201779527A | ||||
| JP2004153872A | ||||
| JP2017506490A | ||||
| JP2014502425A |
Foreign References:
| WO2008153142A1 | ||||
| US20100060245 |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita