Electricity: battery or capacitor charging or discharging – Capacitor charging or discharging
Reexamination Certificate
2006-06-06
2008-08-26
Vu, Bao Q. (Department: 2838)
Electricity: battery or capacitor charging or discharging
Capacitor charging or discharging
C320S116000, C320S119000, C320S120000, C320S122000, C320S167000
Reexamination Certificate
active
07417408
ABSTRACT:
A method and an arrangement for charging capacitors of a direct-voltage intermediate circuit of a frequency converter. The arrangement comprises a charging circuit (CCA) comprising a first diode (D1) and a second diode (D2) connected in series with the first diode (D1) and a current-limiting component (AA) connected in parallel with the series connection of the diodes (D1, D2), whereby said capacitors may be charged through a main switch (K1b, K2b, . . . , Knb) of the capacitor, the first diode (D1) and the current-limiting component (AA).
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Finnish Office Action dated Apr. 26, 2006.
Pöyhönen Simo
Talja Markku
ABB Oy
Buchanan & Ingersoll & Rooney PC
Vu Bao Q.
Williams Arun
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