ELEVATOR CONTROL DEVICE AND ELEVATOR CONTROL METHOD

• Main Authors: MARUOKA YASUSHI, YAMAZAKI DAISEI, MATSUMOTO KEIJI, TOYABE JUN, NAGANUMA KAZUTO
• Format: Patent
• Language: English; Japanese
• Published: 09.06.2016
• Subjects: ELEVATORS; ESCALATORS OR MOVING WALKWAYS; HAULING; HOISTING; LIFTING; PERFORMING OPERATIONS; TRANSPORTING

PROBLEM TO BE SOLVED: To prevent unnecessary emergency stop of an elevator, resulting from a voltage decrease in AC commercial power source.SOLUTION: An elevator control device comprises: a control unit that controls drive of a motor that lifts or lowers an elevator car on the basis of a three-phase AC power source supplied from outside; a first circuit connected to the three-phase AC power source side and configured to restrict harmonic wave in the three-phase AC power source; a second circuit connected to the secondary side of the first circuit and configured to rectify the three-phase AC power source, thereby outputting energy required for the motor, via a third circuit that controls the motor; and a control unit configured such that when voltage of the three-phase AC power source output from the first circuit is equal to or lower than a first threshold value, the operation of the car is controlled in accordance with the result of a comparison between a second threshold value and energy of AC power source after the three-phase AC power source output from the second circuit is rectified.SELECTED DRAWING: Figure 1 【課題】交流商用電源の電圧降下によるエレベータの不要な非常停止を防止する。【解決手段】エレベータ制御装置は、外部から供給される三相交流電源に基づいてエレベータの乗りかごを昇降させるモータの駆動を制御する制御部と、前記三相交流電源側に接続され、該三相交流電源を高調波抑制する第１の回路と、前記第１の回路の二次側に接続され、前記三相交流電源を整流して、前記モータを制御する第３の回路を介して該モータに必要なエネルギーを出力する第２の回路と、前記第１の回路から出力される前記三相交流電源の電圧が第１の閾値以下であることを検出した場合に、前記第２の回路から出力される前記三相交流電源の整流後の直流電源のエネルギーと第２の閾値との比較結果に応じて、前記乗りかごの運転を制御する制御部と、を備える。【選択図】図１