Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1996-03-05
1997-12-30
Ip, Paul
Electricity: motive power systems
Induction motor systems
Primary circuit control
318758, 318803, 318805, H02P 534, H02M 748
Patent
active
057034591
ABSTRACT:
A driver for an induction motor includes a voltage limiter which limits an upper limit value of an output voltage from an invertor circuit in accordance with an output frequency command, a lowest frequency limiter which limits a lower limit of an output frequency from the invertor circuit, a forward rotation limiter which outputs a first power supply interruption signal when the output frequency from the invertor circuit reaches the upper limit, a reverse rotation limiter which outputs a second power supply interruption signal when a reverse rotational speed of the motor reaches a reverse rotation limit level, and a low-speed overload detector which outputs a third power supply interruption signal when a state in which the second power supply interruption signal is not output continues in a low speed abnormality state.
REFERENCES:
patent: 4160940 (1979-07-01), Wolf
patent: 4335337 (1982-06-01), Okamatsu et al.
patent: 4477761 (1984-10-01), Wolf
patent: 4721861 (1988-01-01), Saito et al.
patent: 4777420 (1988-10-01), Dadpey et al.
Fujisaki Yoshihiro
Takada Kazuyuki
Yasohara Masahiro
Ip Paul
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Driver for an induction 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 Driver for an induction motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driver for an induction motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-205697