Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1993-04-28
1996-08-27
Ip, Paul
Electricity: motive power systems
Induction motor systems
Primary circuit control
318811, 318799, 187316, 363 41, H02P 540
Patent
active
055504507
ABSTRACT:
Polarity change of a feed-forward compensation signal for compensating for a dead-time voltage disturbance is synchronized with zero crossings of a load current reference. The load current reference is advanced in time by adding a fixed phase angle, scaled by the synchronous frequency, to the synchronous coordinates angle. The load current reference is time-advanced only for timing the polarity change of the feed-forward compensation signal and not for application to the current regulators; the current regulators still use the load current reference (unadvanced). For a converter, the load current would be an AC mains input current. For an inverter, the load current could, for example, be an induction motor stator current. The shape of the feed-forward compensation signal is approximately trapezoidal and is obtained from the limited, amplified, advanced load current reference. The shape of the feed-forward compensation signal is a function of at least one of: the load current frequency, the load current amplitude and an amplification scaler.
REFERENCES:
patent: 4361794 (1982-11-01), Kawada et al.
patent: 4387421 (1983-06-01), Zach et al.
patent: 4481457 (1984-11-01), Zach et al.
patent: 4509003 (1985-04-01), Ohnishi et al.
patent: 4510430 (1985-04-01), Ashikaga et al.
patent: 4547719 (1985-10-01), Sakamoto et al.
patent: 4562386 (1985-12-01), Goff et al.
patent: 4581693 (1986-04-01), Ueda et al.
patent: 4719400 (1988-01-01), Kurakake et al.
patent: 4727468 (1988-02-01), Maekawa
patent: 4749923 (1988-06-01), Chieng
patent: 4926104 (1990-05-01), King et al.
patent: 5130626 (1992-07-01), Kajitani et al.
patent: 5140248 (1992-08-01), Rowen et al.
patent: 5187420 (1993-02-01), Kajitani et al.
patent: 5206802 (1993-04-01), Blasko
patent: 5250765 (1993-10-01), Mizuno et al.
patent: 5250890 (1993-10-01), Tanamachi et al.
patent: 5270632 (1993-12-01), Hirota et al.
patent: 5321599 (1994-06-01), Tanamachi et al.
patent: 5357181 (1994-10-01), Mutoh et al.
Palko Joseph
Zeranski Robert R.
Ip Paul
Otis Elevator Company
LandOfFree
Dead-time effect compensation for pulse-width modulated inverter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dead-time effect compensation for pulse-width modulated inverter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dead-time effect compensation for pulse-width modulated inverter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1058216