Title: Arrangement for providing auxiliary energy source for static inverter used with traction motor drive during power interruption

Abstract: A high voltage power supply system for energizing a static inverter, in which an auxiliary circuit provides a source of reserve energy to sustain inverter operation during periods of power interruption. In the auxiliary circuit, there is provided a capacitance normally charged from the source of power (catenary) via a resistance whose ohmic value assures a slow rate of charge to avoid blowing the input fuse in the event of a short in the auxiliary circuit capacitance and to permit use of the desired capacitance with a reduced voltage rating. A diode arrangement statically connects the higher of the catenary voltage or the stored energy reserve of the auxiliary circuit to the inverter.

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Inventors: Restori, Ettore (Turin, IT)
Careglio, Giuseppe (Turin, IT)

Application Number: 833528
Filing Date: 1977-09-15
Publication_date: 1979-03-20
Assignee: WABCO Westinghouse (Turin, IT)
Primary Class(es): 307/64 307/9.1
Other Classes:
US Patent Ref:

3262018	Jul, 1966	Bogaerts et al.	307/64.
3784841	Jan, 1974	Hosaka	307/72.
4041324	Aug, 1977	Tashiro et al.	307/9.

Other Refs:
Primary Examiner: Schaefer, Robert K.
Assistant Examiner: Ginsburg, Morris
Attorney: McIntire, Jr.; R. W.