Synchronous Motor: In this post , the Advantages, disadvantages and applications of synchronous Motor is given in detail.
Advantages of Synchronous Motor
1. Its power factor can be controlled by the control of field current.
Also Read: Physical significance of power factor
2. In certain applications, the fact that its speed is independent of load and applied voltage, may be important.
3. Itโs efficiency is slightly higher than that of induction motor.
4. For low speeds and high rating, ( above 500 kW) a synchronous motor is cheaper than induction motor
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Disadvantages of Synchronous Motor
1. The need of dc source for excitation (usually a an exciter is mounted on the shaft to provide the excitation)
2. Need of starting and synchronizing
3. Instability
4. Hunting
5. Need of expensive control devices
In view of the above advantages, and ย disadvantages, the synchronous motors are used only for low speed, high up speed, high hp requirements.
Also Read: Synchronous Machines|synchronous generator & synchronous Motor
Advantages and disadvantages of synchronous motor
Applications of Synchronous Motor
1. Large low head pumps
2. Rubber mills and mixers
3. Crushers
4. Paper mill drives
5. Compressors
6. Rolling mills
7. Ball mills etc
8.ย ย ย ย Synchronous motor can also be used as a phase modifier for voltage regulation of transmission lines.
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