Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1997-06-09
1999-01-12
Ro, Bentsu
Electricity: motive power systems
Induction motor systems
Primary circuit control
318804, 318805, H02P 2100, H02P 540
Patent
active
058595210
ABSTRACT:
To provide a trans-vector controller for an alternating current ("AC") motor that facilitates operating the secondary resistance of the AC motor without experimentally rotating the AC motor.
In a preferred embodiment, the variable speed control circuit, including a secondary resistance value generating device, changes the direct current ("DC") exciting current and operates the secondary resistance of an induction motor by superimposing an AC signal with small amplitude outputted from a AC signal generator onto a reference current value immediately before the start of the induction motor in the state of DC excitation.
REFERENCES:
patent: 5532570 (1996-07-01), Tajima et al.
patent: 5734251 (1998-03-01), Tajima et al.
Tajima Hirokazu
Tetsutani Hiroshi
Umida Hidetoshi
Fuji Electric & Co., Ltd.
Ro Bentsu
LandOfFree
Variable speed controller for an AC motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable speed controller for an AC motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable speed controller for an AC motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1519804