Title:
車両用回転電機
Document Type and Number:
Japanese Patent JP5716715
Kind Code:
B2
Abstract:
An alternator has rectifying module groups. The rectifying module groups form a bridge circuit. The rectifying module groups have a load dump protection judgment section for monitoring an output voltage of rectifying module groups. When the monitored output voltage exceeds a first threshold voltage, the load dump protection judgment section provides to a control section an instruction to turn on MOS transistors in a lower arm of the bridge circuit at a time when a predetermined delay time has elapsed. When a second threshold voltage is lower than the first threshold voltage and the monitored output voltage becomes less than the second threshold voltage after the monitored output voltage exceeds the first threshold voltage, the load dump protection judgment section provides to the control circuit an instruction to turn on the MOS transistors in the lower arm after the MOS transistors are turned off during a predetermined time length.
Inventors:
Toshinori Maruyama
Seiya Nakanishi
Kimura Asaka
Inoguchi
Seiya Nakanishi
Kimura Asaka
Inoguchi
Application Number:
JP2012178028A
Publication Date:
May 13, 2015
Filing Date:
August 10, 2012
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H02P9/04; H02J7/14; H02J7/16
Domestic Patent References:
| JP2011078216A | ||||
| JP2003244864A | ||||
| JP2005506028A | ||||
| JP2012120293A | ||||
| JP2004153887A |
Attorney, Agent or Firm:
Masahiko Amagai
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