What are available techniques to start a synchronous motor?

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Q: A separately excited DC motor rated 400 V, 15 A, 1500 RPM drives a constant torque load at rated…

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Q: Example-10.3 A separately-excited de motor is supplied from 230 V, 50 Hz source through a…

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Q: Why is SMF able to travel greater distances much more quickly than MMF?

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Q: Compute the time constant 7 of the first order circuit below in which A₁ 2, A, R₁ = 1 kN, R₂ = 2.2…

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Q: Using node analysis compute the node voltages if V = 12V and R=1092 16 A & On 10 Ω 9 A RΩ

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Q: What is dynamic braking or Regenerative braking of DC motor, elaborate with at least on example.

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Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.