The invention relates to the technical field of pole-changing and frequency-changing speed regulation systems, in particular to a pole-changing and frequency-changing speed regulation system for a petroleum drilling winch, which comprises a motor speed regulation handle, a weight indicator, a controller, a frequency converter, a winch and a plurality of sensors, the winch comprises an asynchronous alternating current motor, a roller shaft assembly, a closed brake system and a motor encoder, the frequency converter is connected with the asynchronous alternating current motor, the asynchronous alternating current motor comprises 12 windings, and the 12 windings are all connected with a power supply. The rotating speed of the motor is changed by switching the number of poles of the motor, then the double-gear speed adjustment of the winch is realized, the single-winding motor is adopted, six wiring ends of a motor winding are connected with a power supply, and three-phase or six-phase alternating current is provided by changing the phase matching of multi-phase alternating current to realize pole changing.
本发明涉及变极变频调速系统技术领域,具体地说是一种一种石油钻井绞车用的变极变频调速系统,包括电机调速手柄、指重表、控制器、变频器、绞车和若干传感器,所述控制器分别与所述指重表、调速手柄、变频器和编码器连接,所述绞车包括异步交流电机、滚筒轴总成、闭式刹车系统和电机编码器,所述变频器和所述异步交流电机连接,所述异步交流电机包括12个绕组,12个所述绕组均连接电源。本发明通过电机极数的切换来实现电机转速改变,继而实现绞车双档速度调节,采用单绕组电机,电机绕组有六个接线端与电源连接,通过改变多相交流电的相位配合,提供三相或六相的交流电实现变极。
Pole-changing variable-frequency speed regulation system for petroleum drilling winch
一种石油钻井绞车用的变极变频调速系统
2025-01-17
Patent
Electronic Resource
Chinese
IPC: | B66D Haspeln , CAPSTANS |
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