Torque motor is a kind of asynchronous motor, the difference is that in some special occasions need to maintain a period of blocked rotation, mainly because its output characteristics are different from other motor products, with soft mechanical characteristics, will automatically change with the load change speed. So how does the torque motor achieve the requirement of lock-rotor? Here is a simple understanding with Senli Motor Xiaobian.

       If the torque motor and the ordinary asynchronous motor allow temperature rise, then it can not be blocked, so its heat dissipation method will use forced ventilation to obtain excellent cooling effect; Secondly, the number of turns of the stator winding is increased compared with the product of the same specification, which can reduce the locked-rotor current; When the rotor is blocked, because the rotor is made of different materials, the resistance can be increased, thus reducing the blocked rotor current.

       The torque motor allows a long time of low speed operation and a certain time of rotation, and the motor current does not change much when the rotation is blocked. Because of the above reasons, the torque motor can achieve the locked-rotation requirements.

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