Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1986-03-14
1990-08-21
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
Primary circuit control
318729, H02P 540
Patent
active
049509705
ABSTRACT:
An improved induction motor control system. Single-phase and three-phase AC induction motors are controlled in accordance with the equation y=m=x+b, where y is the phase angle, m is the slop, x is the firing delay and b is the offset. Subsequently, the firing delay is increased by predetermined amounts, the behavior of the phase angle is evaluated for several cycles, and the motor is controlled based on the results of the evaluation, thereby minimizing energy consumption.
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patent: 4276505 (1981-06-01), Bose
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patent: 4408149 (1983-10-01), Collins et al.
patent: 4477761 (1984-10-01), Wolfe
Toth A., "Energy Savings in an Induction Motor Using the 8022 Microcontroller", AP-94, Intel Corp.
Davis, Jr. Ray E.
Johnson Richard H.
Parker Ronald W.
Timothy Earle J.
Westkamper Michael J.
Chesebrough-Pond's Inc.
Smith Jr. David
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