Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1981-12-07
1983-10-11
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
Primary circuit control
318345E, 318722, 318723, H02P 540, H02P 744, H02P 758
Patent
active
044095341
ABSTRACT:
Regulation of inverter-machine drive system torque and frequency in accordance with operator commands is achieved by the use of an improved, microcomputer-based, control apparatus. At machine frequencies less than a preselected machine frequency, inverter pulse width modulation signal pulses and half cycle polarity signal pulses are supplied by the control apparatus to the inverter to regulate the duration and conduction sequence, respectively, of inverter switching devices in accordance with pulse width modulation signal data computed by equilateral triangulation and stored half cycle polarity signal data. At frequencies above the preselected machine frequency, when computation of inverter pulse width modulation signal data becomes impractical, inverter pulse width modulation signal pulses are synthesized from stored data. This achieves simplification of control hardware and provides improved machine drive system performance.
REFERENCES:
patent: 4047083 (1977-09-01), Plunkett
patent: 4099109 (1978-04-01), Abbondanti
patent: 4290108 (1981-09-01), Woehrle
patent: 4348734 (1982-09-01), Dougherty
Davis Jr. James C.
General Electric Company
Smith Jr. David
Snyder Marvin
Steinberg William H.
LandOfFree
Microcomputer-based pulse width modulated inverter fed machine d does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microcomputer-based pulse width modulated inverter fed machine d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microcomputer-based pulse width modulated inverter fed machine d will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1278078