What is synchronous motor

Question

Accepted Answer

A synchronous motor is an AC motor that operates at a constant speed determined by the frequency of the power supply.

Synchronous motors have a rotor that rotates at the same speed as the rotating magnetic field in the stator.
They are commonly used in applications that require constant speed, such as industrial machinery and power generation.
Synchronous motors are more efficient than induction motors at full load.
They are often used in synchronous condensers to improve power factor in electrical systems.
Examples of synchronous motors include brushless DC motors and permanent magnet motors.

Accepted Answer

सिंक्रोनस मोटर से स्थिर गति प्राप्त किया जा सकता है इसलिए इस मोटर का उपयोग ऐसे स्थानों पर किया जाता है जहा हमे स्थिर गति (constant speed) की जरूर हो। 3. सिंक्रोनस मोटर का उपयोग कंप्रेशर, पम्प तथा ड्राइविंग फैन को चलाने में किया जाता है।

Accepted Answer

A synchronous motor is a type of electric motor that operates at a constant speed that is directly proportional to the frequency of the alternating current (AC) power supply. It is called "synchronous" because the rotational speed of the motor's rotor is synchronized with the frequency of the AC power source.

Here are some key features and characteristics of synchronous motors:

Operation: Synchronous motors operate based on the principle of magnetic fields. The motor has a rotor and a stator. The rotor carries a set of permanent magnets or electromagnets, while the stator is a set of stationary windings.
Synchronization: The rotor of a synchronous motor rotates at the same speed as the rotating magnetic field generated by the stator winding. This synchronous rotation is achieved by matching the motor's speed to the frequency of the AC power supply.
Excitation: Synchronous motors require a separate DC power source to provide excitation to the rotor windings. This excitation establishes a magnetic field that interacts with the rotating magnetic field of the stator, resulting in the motor's rotation.
Applications: Synchronous motors are commonly used in applications where precise control of speed is required, such as in industrial machinery, power plants, electric clocks, and synchronous generators. They are also utilized in electric vehicle propulsion systems and hybrid electric vehicles.
Advantages: Synchronous motors offer advantages such as high efficiency, high power factor, and constant speed operation. They are known for their ability to maintain a stable speed under varying loads and exhibit good performance in applications requiring synchronization with other equipment.
Disadvantages: Synchronous motors generally require complex control systems due to their reliance on external excitation. They also tend to be more expensive than other types of motors.

It's important to note that synchronous motors differ from asynchronous (induction) motors, which do not rely on synchronized rotation and are more commonly used in everyday applications.

What is synchronous motor

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