Inverter device

Details Inverter device Inverter device

2006-07-11

2010-11-30

Masih, Karen (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S807000, C318S432000

Reexamination Certificate

active

07843161

ABSTRACT:
This invention provides an inverter device that can detect a step-out state of an AC motor by a simple process without depending on a rotation speed of the AC motor and also surely hold an abnormal state in the step-out state of the AC motor. The inverter device1includes a torque current control unit6for controlling a torque current direction voltage so that a given torque current command value coincides with a torque current detection value, and a V/f conversion unit7for calculating an induced voltage command of the AC motor2based on a given output frequency command. The inverter device further includes a step-out detection unit10for detecting a step-out state of the AC motor2based on the torque current direction voltage and the induced voltage command.

REFERENCES:
patent: 2006/0049795 (2006-03-01), Iura et al.
patent: 09-294390 (1997-11-01), None
patent: 2004-064902 (2004-02-01), None
patent: 2005-151635 (2005-06-01), None

Affiliated with

Also associated with

Rating

Inverter device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Inverter device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inverter device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4203464