Current detection device

Details Current detection device Current detection device

2005-01-18

2005-01-18

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S154000, C318S721000, C318S802000

Reexamination Certificate

active

06844699

ABSTRACT:
A current detection device used for a plurality of rotating electric machines is provided. The rotating electric machines are supplied with a composite current containing a plurality of frequency components from an single inverter and the frequency is set in response to the rotational angular velocity of one rotating electric machine. The current detection device is provided with a current sensor which detects only current components at a single frequency in the composite current. The current sensor detects the currents in a set of supply lines, the supply lines of which being collected and passing through the current sensor so that the current components of the frequency different from the single frequency cancel out to zero in the set of supply lines.

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patent: 6335606 (2002-01-01), Minagawa et al.
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