Method for starting up a converter drive comprising an intermedi

Details Method for starting up a converter drive comprising an intermedi Method for starting up a converter drive comprising an intermedi

1987-07-02

1988-09-20

Wong, Peter S.

Electric power conversion systems

Current conversion

With starting arrangement

363 35, 318430, H02M 500, H02M 700

Patent

active

047729970

ABSTRACT:
For setting in operation a converter drive for an asynchronous machine with an intermediate-current link and phase-sequence quenching, the commutations in the inverter are synchronized with the commutations in the controlled rectifier and/or all commutating capacitors are discharged before the start-up and/or the direction of commutation is cyclically changed during the startup. This makes it possible to start up the converter also if the intermediate-link current has gaps, and the asynchronous machine is loaded only with hunting torques.

REFERENCES:
patent: 4455599 (1984-06-01), Tamura et al.
patent: 4517636 (1985-05-01), Uchino et al.
patent: 4521840 (1985-06-01), Hoadley
patent: 4597039 (1986-06-01), Alexander
patent: 4620296 (1986-10-01), Siemon
ETZ-A vol. 96, 1975, No. 11.
Patents Abstracts of Japan, Band 6, No. 155 (E-125) [1033], 7, Aug. 1982, and JPA5775579 (Tokyo Shibaura Denki K.K.) 1982.
IEEE Transactions on Industry Applications, Band 1A-16, No. 1, 1980, Y. U.S.; LIenau et al., "Power Converters for Feeding Asynchronous Traction Motors of Single Phase AC Vehicles" p. 104.
IEEE Proceedings Section, Band 131, No. 5, Sep. 1984; Survey GB, Bowes et al., "PWM Switching Strategies for Current-Fed Inverter Drives", pp. 195-202.

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