Control apparatus for elevator

Details Control apparatus for elevator Control apparatus for elevator

1984-07-03

1986-01-28

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

187 29R, 318805, H02P 540, B66B 130

Patent

active

045674191

ABSTRACT:
A control apparatus for an elevator comprising a temperature sensor which senses the temperature of the rotor of an induction motor during the stoppage of a cage, and a voltage/frequency control device which calculates the secondary winding resistance value of the induction motor on the basis of the output value of the temperature sensor and which vector-controls a power conversion device by the use of the calculated secondary winding resistance value, so that during the stoppage of the elevator, the temperature of the rotor is measured to alter the secondary winding resistance value necessary for the vector control, whereby the optimum control can be performed.

REFERENCES:
patent: 4423367 (1983-12-01), Blaschke et al.
patent: 4431957 (1984-02-01), Chausse et al.
patent: 4441065 (1984-04-01), Bayer et al.
patent: 4447787 (1984-05-01), Schwesig et al.

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