Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1997-03-05
1998-03-31
Ip, Paul
Electricity: motive power systems
Induction motor systems
Primary circuit control
318803, 318808, 318811, H02P 540
Patent
active
057342490
ABSTRACT:
A method and an apparatus for direct torque control are specified for a three-phase machine fed via a harmonic filter, which method manages as far as possible without any major adaptation to already known DTC methods and DTC apparatuses. In addition, the oscillations caused by the filter are intended to be damped effectively. This is achieved in that a current flowing through the filter and/or a filter output voltage are/is measured, and the reference flux value and the reference torque value are corrected on the basis of the measured voltage and/or of the measured current. The correction comprises a transformation of the filter output voltage into a first component at right angles to a stator flux and into a second component parallel to the stator flux, as well as a reduction in the reference torque and flux values in proportion to the oscillating part of the filter output voltage.
REFERENCES:
patent: 4314190 (1982-02-01), Walker et al.
patent: 4388577 (1983-06-01), Blaschke et al.
patent: 4484128 (1984-11-01), Jotten et al.
patent: 4677360 (1987-06-01), Garces
patent: 4724373 (1988-02-01), Lipo
patent: 4780650 (1988-10-01), Miyazaki et al.
patent: 4792741 (1988-12-01), Matsuo et al.
patent: 4885520 (1989-12-01), Sugimoto et al.
patent: 5166593 (1992-11-01), De Doncker et al.
patent: 5212438 (1993-05-01), Miyazaki et al.
patent: 5272429 (1993-12-01), Lipo et al.
patent: 5334923 (1994-08-01), Lorenz et al.
patent: 5365158 (1994-11-01), Tanaka et al.
"Direkte Drehmomentregelung von Drehstromantrieben", Aaltonen, et al., ABB Technik, Mar. 1995, pp. 19-24.
"Feldorientiert geregelter Ummrichterantrieb mit sinusformigen Maschinenspannungen", Zimmermann, etzArchiv Bd., Oct. 1988, pp. 259-265.
Pohjalainen Pasi
Stulz Christian
Asea Brown Boveri AG
Ip Paul
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