Shared inverter electrical drive system
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United States of America Patent
Stats
-
Aug 20, 1996
Grant Date -
N/A
app pub date -
Sep 30, 1994
filing date -
Sep 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The disclosure involves a drive system having a control section, an adjustable frequency drive unit coupled to the control section, and first and second drive motors. The drive system is used with a material handling machine such as a light-duty crane on which any two of the hoist, bridge and trolley drives are rarely used simultaneously and in any event need not be used simultaneously. The drive unit is a scalar or flux vector (feedback-type) inverter and is the sole drive unit providing electrical power to the drive motors. Preferred control is by a pendant station or radio transmitter. Operating a pushbutton on the pendant station (or a paddle-like stick control on the transmitter) for a particular drive motor 'locks out' operation of the other motors. Motors are operated on a first-come, first-served basis.
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Family
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Cited Art Landscape
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