Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1995-09-29
1997-06-10
Ip, Paul
Electricity: motive power systems
Induction motor systems
Primary circuit control
318805, 318806, 318807, H02P 736
Patent
active
056379765
ABSTRACT:
A method and apparatus to be used with a motor controller for determining RMS line current during a start-up period or a stalled period using electrical values known to the controller. Various equations relate RMS line current to monitored thyristor and source voltages as well as the duration of non-conducting periods in line voltages to determine the RMS line current.
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Chen Li
Unsworth Peter
Allen-Bradley Company Inc.
Horn John J.
Ip Paul
Jaskolski Michael A.
Miller John M.
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