Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1990-09-28
1992-06-09
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
Primary circuit control
318811, H02P 540
Patent
active
051210436
ABSTRACT:
An open loop, volts/hertz motor drive for control of an induction motor adjusts the voltage command to a sine-triangle PWM inverter to compensate for reduction in PWM inverter gain and to compensate for variations in DC bus voltage in the pulse dropping transition region between PWM operation and six-step operation. The drive includes a microelectronic processor interfaces to DC bus voltage sensing circuitry and to the PWM inverter.
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J. A. Houldsworth, D. A. Grant, "The Use of Harmonic Distortion to Increase the Output Voltage of a Three-Phase PWM Inverter," IEEE Transactions on Industry Applications, vol. IA-20, No. 5, Sep./Oct., 1984, pp. 1224-1228.
Kerkman Russel J.
Leggate David
Seibel Brian J.
Allen-Bradley Company Inc.
Smith Jr. David
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