PROBLEM TO BE SOLVED: To provide an elevator car movement control device capable of moving a car by determining a light-load direction without using a load sensor or a torque sensor when a power failure occurs.SOLUTION: A control part of an inverter 80 that supplies a voltage to a motor 50 for driving an elevator includes a speed control system that obtains a torque command value based on a deviation between a speed command value and a speed detection value, and executes variable speed control for the motor 50 including a zero speed region according to the torque command value. The speed control system is subjected to the zero speed control in a brake open state when an input power source fails and operation is made by an emergency power source, a torque command value of the speed control system at that time is calculated, and, based on the polarity of the calculated torque command value, a light-load direction of the motor determined by the weight balance between a counter weight 53 and a car 54 of motor rotation directions detected by an encoder 56 is detected. The car 54 is subjected to the movement control in a light-load direction by the speed command value corresponding to the detected light-load direction.

    【課題】停電発生時に荷重センサやトルクセンサを用いることなく軽負荷方向を判定してかごを移動することができるエレベータのかご移動制御装置を提供する。【解決手段】エレベータ駆動用のモータ50に電圧を供給するインバータ80の制御部は、速度指令値および速度検出値の偏差に基づいてトルク指令値を求め、該トルク指令値に応じて、前記モータ50を零速度領域を含めて可変速制御する速度制御系を有し、入力電源が停電し非常電源による運転時に、ブレーキの開状態にて、前記速度制御系を零速度制御し、その時の速度制御系のトルク指令値を演算し、該演算したトルク指令値の極性に基づいて、エンコーダ56により検出されたモータの回転方向のうち、カウンタウェイト53とかご54の重量バランスで決まるモータの軽負荷方向を検出し、その検出された軽負荷方向に対応する速度指令値にてかご54を軽負荷方向へ移動制御する。【選択図】図1


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    Title :

    ELEVATOR CAR MOVEMENT CONTROL DEVICE AND ELEVATOR CAR MOVEMENT CONTROL METHOD


    Additional title:

    エレベータのかご移動制御装置およびかご移動制御方法


    Contributors:

    Publication date :

    2015-12-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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