The invention relates to a star sealing control circuit and method. The circuit comprises an elevator controller used for switching to output a star-sealing protection signal and a star-sealing holding signal when an elevator enters a safety mode; under the condition that the elevator enters a safety mode, the lower bridge isolation unit outputs a lower bridge signal, responds to a received star sealing protection signal and inhibits unbalanced current of a motor at the initial stage of star sealing; the star sealing control unit connected between the lower bridge isolation unit and the motor is used for integrating the star sealing holding signal and the currently received lower bridge signal and maintaining the star sealing state of the motor; wherein the first isolation power supply unit is respectively connected with the upper bridge isolation unit and the lower bridge isolation unit and continuously supplies power to the upper bridge isolation unit and the lower bridge isolation unit; and the second isolation power supply unit is connected with the star sealing control unit. Therefore, normal operation and safe dynamic star sealing emergency braking of the elevator can be achieved without using a contactor, the cost is reduced, and the problem of large size is solved.
本申请涉及一种封星控制电路及方法。该电路包括:电梯控制器,用于在电梯进入安全模式下切换为输出封星保护信号和封星保持信号;在电梯进入安全模式的情况下,下桥隔离单元输出下桥信号,以及响应于接收到的封星保护信号,抑制电机在封星初期的不平衡电流;连接在下桥隔离单元和电机之间的封星控制单元用于整合封星保持信号与当前接收到的下桥信号,维持电机的封星状态;其中,第一隔离供电单元,分别连接上桥隔离单元、下桥隔离单元,并持续供电至上桥隔离单元、下桥隔离单元;第二隔离供电单元,连接封星控制单元。从而,本申请无需使用接触器即可实现电梯的正常运行及安全的动态封星紧急制动,降低了成本,并解决了体积大的问题。
Star sealing control circuit and method
封星控制电路及方法
2023-07-28
Patent
Electronic Resource
Chinese
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B66B Aufzüge , ELEVATORS / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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