This lesson covers the operation of salient pole synchronous machines, both as a motor and a generator. It delves into the importance of the phasor diagram in synchronous machines and the challenges in obtaining an equivalent circuit due to the presence of two reactances. The lesson further discusses the expression for power in a salient pole machine and compares it with a non-salient pole synchronous generator. It also highlights the unique ability of a salient pole synchronous machine to produce torque and power even with zero field current, operating as a reluctance motor.

- Salient pole synchronous machines can operate both as a motor and a generator.
- The phasor diagram plays a crucial role in understanding the operation of synchronous machines.
- Due to the presence of two reactances, it is challenging to obtain an equivalent circuit for salient pole synchronous machines.
- The power expression for a salient pole machine includes two terms, one involving sine delta and the other involving sine 2D.
- A salient pole synchronous machine can produce torque and power even with zero field current, operating as a reluctance motor.

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