Title:
インバータ装置
Document Type and Number:
Japanese Patent JP4151651
Kind Code:
B2
Abstract:
In the inverter device of the invention, when a power source connected to an electrolytic capacitor 5 is interrupted, a switching control circuit 6 a controls switching elements of an inverter main circuit 7 a to operate to supply a current to a load, thereby discharging charges of the electrolytic capacitor 5 , and an electrolytic capacitor electrostatic capacitance calculator 10 a calculates the electrostatic capacitance of the electrolytic capacitor, on the basis of: a discharged charge amount which is obtained from an outflow current Ic from the electrolytic capacitor 5 , and a discharge time; and a discharge voltage DeltaV which is a voltage drop from beginning of discharging of the electrolytic capacitor 5.
Inventors:
Akira Hatai
Unno Masato
Masakatsu Ogami
Kiyoshi Eguchi
Unno Masato
Masakatsu Ogami
Kiyoshi Eguchi
Application Number:
JP2004569542A
Publication Date:
September 17, 2008
Filing Date:
March 17, 2003
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01R27/26; G01R31/00; G05F1/10; H02M1/14; H02M5/45; H02M7/5387
Domestic Patent References:
| JP2040572A | ||||
| JP2000152643A | ||||
| JP2002165357A | ||||
| JP8080055A | ||||
| JP2002027761A | ||||
| JP3269268A | ||||
| JP3293938A |
Attorney, Agent or Firm:
Shogo Takahashi
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka