Circuit arrangement for the actuation of an electric-motor...

Details Circuit arrangement for the actuation of an electric-motor... Circuit arrangement for the actuation of an electric-motor...

2005-11-29

2005-11-29

Masih, Karen (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S034000, C318S047000, C318S807000

Reexamination Certificate

active

06969969

ABSTRACT:
A large domestic appliance has main and auxiliary drives (17, 24) thereof supplied from the same dc voltage intermediate circuit (19) which is provided only once, by way of change-over switch sets (12), by half-bridge circuits (21, 21′). For that purpose a frequency converter (15) with its bridge circuit (21) for the main drive (17) is switched over in single-pole or multiple mode to the rotary field motor (23, 25) of the auxiliary drive (24) by way of a change-over switch set (12) connected in its output-side motor lines (13); or in the frequency converter (15) two half-bridge circuits (21, 211) which are associated with the main and the auxiliary drives (17, 24) are operated in parallel from the dc voltage intermediate circuit (19).

REFERENCES:
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patent: 2001129293 (2001-05-01), None
patent: 2001-276485 (2001-10-01), None

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