Motor drive circuit

Details Motor drive circuit Motor drive circuit

2006-08-15

2011-11-01

Leykin, Rita (Department: 2837)

Electrical transmission or interconnection systems

Plural supply circuits or sources

One source floats across or compensates for other source

C318S400300, C318S400140, C318S492000, C318S139000, C323S239000, C323S286000, C323S289000, C323S282000, C320S166000, C320S127000, C361S212000, C361S011000, C307S045000, C307S046000, C307S401000

Reexamination Certificate

active

08049363

ABSTRACT:
A motor drive circuit comprises positive and negative input terminals for connection of the motor circuit to a DC supply, a DC link filter connected between the input terminals: an electric motor having at least two phases, a plurality of motor drive sub-circuits, each connected to a respective phase of the electric motor and which each control the flow of current into or out of the respective phase of the motor that has been drawn from the supply through the DC link filter, and a switching means provided in the electrical path between the DC link filter and the electric motor drive sub-circuits, the switching means being movable between a closed position in which it connects the DC link filter to the motor drive sub-circuits, and an open position which isolates the DC link filter from the motor drive sub-circuits.

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