Inverter control device for driving an elevator

Details Inverter control device for driving an elevator Inverter control device for driving an elevator

1991-01-02

1992-07-14

Shoop, Jr., William M.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

318811, 318255, 363 71, H02P 318

Patent

active

051306174

ABSTRACT:
An inverter control device for controlling an induction motor that drives elevators, has two induction motor coils that are electrically separate with inverters connected to each coil, and a control device that controls these two inverters with the same current command. The preferred structure is one where one control system outputs one current command to two inverters, the inverter control device has two separate control systems that divide one current command and output each half to the respective inverter and one carrier circuit that modulates each control system at the same timing, or two separate converters are connected to the power element of the respective inverters.

REFERENCES:
patent: 4085355 (1978-04-01), Fradella
patent: 4640389 (1987-02-01), Kamaike
patent: 4783728 (1988-11-01), Hoffman
patent: 5017855 (1991-05-01), Byers et al.

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