{"id":417,"date":"2026-09-08T20:05:27","date_gmt":"2026-09-08T12:05:27","guid":{"rendered":"http:\/\/www.fngzjndtw.com\/blog\/?p=417"},"modified":"2026-09-08T20:05:27","modified_gmt":"2026-09-08T12:05:27","slug":"what-is-the-pull-out-torque-of-a-synchronous-motor-43b4-717fef","status":"publish","type":"post","link":"http:\/\/www.fngzjndtw.com\/blog\/2026\/09\/08\/what-is-the-pull-out-torque-of-a-synchronous-motor-43b4-717fef\/","title":{"rendered":"What is the pull – out torque of a synchronous motor?"},"content":{"rendered":"

As a supplier of synchronous motors, I often encounter clients who are curious about various technical aspects of these motors. One question that comes up frequently is, "What is the pull – out torque of a synchronous motor?" In this blog post, I’ll delve into the details of pull – out torque, its significance, and how it impacts the performance of synchronous motors. \u0421\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u044b\u0439 \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u044c<\/a><\/p>\n

<\/p>\n

Understanding Synchronous Motors<\/h3>\n

Before we jump into the concept of pull – out torque, let’s briefly review what a synchronous motor is. A synchronous motor is an AC motor in which the rotation of the shaft is synchronized with the frequency of the supply current. The rotor of a synchronous motor rotates at a constant speed, which is determined by the frequency of the power supply and the number of poles in the motor. This characteristic makes synchronous motors ideal for applications where a constant speed is required, such as in industrial machinery, power generation, and precision equipment.<\/p>\n

Definition of Pull – Out Torque<\/h3>\n

Pull – out torque, also known as breakdown torque, is the maximum torque that a synchronous motor can develop and still remain in synchronism with the rotating magnetic field produced by the stator. When a synchronous motor is operating under normal conditions, the rotor rotates in synchronism with the stator’s magnetic field. However, if an excessive load is applied to the motor, the rotor may start to fall out of step with the stator’s magnetic field. The pull – out torque is the point at which the motor can no longer maintain synchronism and will stall if the load is not reduced.<\/p>\n

Mathematically, the pull – out torque of a synchronous motor can be calculated using the following formula:<\/p>\n

[T_{po}=\\frac{3V^2}{2\\pi fX_s}]<\/p>\n

Where:<\/p>\n