Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1987-03-16
1989-01-17
Wong, Peter S.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 96, 363 98, H02M 748
Patent
active
047991399
ABSTRACT:
A method of and apparatus for regulating the control voltage of a three-phase inverter supplying an a.c. motor are provided, the inverter having a power stage implemented with semiconductor switches, and the output voltage of each inverter phase being measured in the voltage control. For rapidly improving the curve shapes of the inverter output by means of feedback, the control voltage of the pulse width modulator of each inverter phase is regulated by a voltage regulator. The control voltage obtained as output of the voltage regulator is derived from an actual value voltage formed from the output voltage of each inverter phase and a reference voltage.
REFERENCES:
patent: 4477868 (1984-10-01), Steigerwald
patent: 4541041 (1985-09-01), Park et al.
patent: 4559593 (1985-12-01), Glannon
patent: 4597037 (1986-06-01), Okado
patent: 4635177 (1987-01-01), Shekhawat et al.
patent: 4730246 (1988-03-01), Schwesig
Hytti Pekka
Kahkipuro Matti
Nummi Pekka
Sten Urpo
Kone Elevator GmbH
Sterrett Jeffrey
Wong Peter S.
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