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Title:
DISCHARGE CONTROL UNIT OF POWER CONVERSION SYSTEM
Document Type and Number:
Japanese Patent JP2011188713
Kind Code:
A
Abstract:

To solve the problem, wherein there is no guarantee that discharge control in a fault for discharging a capacitor 16 by turning on both of a switching element Swp at a high-potential side and a switching element Swn at a low-potential side in an inverter IV, to short-circuit both the electrodes of the capacitor 16 operates, when a fault actually occurs.

A charge unit 60 for diagnoses charges the capacitor 16 up to a diagnosis voltage. After that, by output of a discharge command dis in a fault, the switching element Swp at the high-potential side and the switching element Swn at the low-potential side are turned on, thus short-circuiting both the electrodes of the capacitor 16 and performing discharge control in a fault for discharging the capacitor 16. In this case, it is determined whether current flows in the switching element Swn, on the basis of a minute current outputted from a sense terminal St.


Inventors:
Shindo, Yusuke
Maehara, Tsuneo
Hamanaka, Yoshiyuki
Miura, Ryotaro
Fukuda, Junichi
Watanabe, Kazunori
Application Number:
JP2010000054416
Publication Date:
September 22, 2011
Filing Date:
March 11, 2010
Export Citation:
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Assignee:
DENSO CORP
International Classes:
H02M7/48; H02J7/00
Domestic Patent References:
JP2000278802A2000-10-06
JP2004357437A2004-12-16
JP2000134954A2000-05-12
JPH05344605A1993-12-24
JPH09201065A1997-07-31
JP2006141158A2006-06-01
JP2010004728A2010-01-07
Attorney, Agent or Firm:
山田 強
栗田 恭成
日野 京子
安藤 悟
松田 洋