Elevator control device

Abstract

Individual current control units are provided to respective motor winding systems of a multi-winding motor that constitutes a hoisting machine (6) for lifting / lowering a cage (8) to give the same torque instruction, and thetaa and thetab obtained by respectively adding magnetic pole adjustment elements (thetaadja, thetaadjb) to an output (theta) from a rotation detector (10) are given to a 3-phase / 2-phase converter and a 2-phase / 3-phase converter to thereby control a q-axis current uniformly and control a magnetic flux in each system to be equal, whereby it is possible to improve a current imbalance between motor winding systems.

Description

[0001] The present invention is a divisional application of the patent application whose application number is 03801027.5, the application date is March 11, 2004, and the invention name is "control device for elevator". technical field [0002] The invention relates to an elevator control device, in particular to a control device for a large-capacity elevator connected with multiple inverter devices and converter devices to drive a winch composed of multi-winding motors. Background technique [0003] The driving device of a large-capacity very high-speed elevator or a double-deck elevator connecting the upper car and the lower car is controlled by a plurality of inverters and converters. [0004] In recent years, high-rise buildings have been developed, and very high-speed elevators for the purpose of transporting a large number of passengers and double-deck elevators that can transport two passengers at a time have been used. As a motor driving such an elevator, a large-cap...

AI Technical Summary

Problems solved by technology

When it is necessary to flow in the B series, since the current value required by the A series differs this time, torque fluctuations are generated.

In addition, when the current cannot be output sufficiently, the torque command itself also fluctuates

Such a state is repeated, and longitudinal vibration is generated, so the riding comfort is deteriorated.

[0013] In addition, depending on the structure of the motor, for example, when the A series and B series windings are installed on the left and right sides of the pulley, the current imbalance between the A series and the B series will generate polarization on the left and right, so vibration may occur. The riding comfort is affected, or the mechanism such as the bearing of the motor rotating shaft is damaged.

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