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What are the types of synchronous generator?

What are the types of synchronous generator?

Types of synchronous machines

  • Hydrogenerators : The generators which are driven by hydraulic turbines are called hydrogenerators. These are run at lower speeds less than 1000 rpm.
  • Turbogenerators: These are the generators driven by steam turbines.
  • Engine driven Generators: These are driven by IC engines.

What are the applications of synchronous generator?

Synchronous generators are the majority source of commercial electrical energy. They are commonly used to convert the mechanical power output of steam turbines, gas turbines, reciprocating engines and hydro turbines into electrical power for the grid. Some designs of Wind turbines also use this generator type.

What are the operating characteristics of synchronous generator?

In a Synchronous Machine Operation the real electrical power exchanged with the bus-bars is controlled by the mechanical shaft power irrespective of excitation. The excitation, on the other hand, governs only the power factor of the machine without affecting the real power flow.

What are the main parts of synchronous generator?

… do so, the synchronous generator is divided into 6 separate parts (nodes) including the stator, stator winding, rotor, shaft, field winding, and frame. Figure 4 shows these parts corresponding to the electrical arrangement.

How do you start a synchronous generator?

Starting a Synchronous Motor Using Slip Ring Induction Motor The motor is first started as a slip ring induction motor. The resistance is gradually cut-off as the motor gains speed. When it achieves near synchronous speed, DC excitation is given to the rotor, and it is pulled into synchronism.

What are the types of rotor in synchronous generator?

Rotor is that part of synchronous machine which can rotate. It carries the field winding. From construction point of view, there are two types of rotor: Salient Pole Rotor and Cylindrical Pole Rotor. Cylindrical pole rotor is also known as round rotor or non-salient pole rotor.

What is rotor in synchronous generator?

The rotor of a synchronous generator is essentially a large electromagnet. The magnetic poles on the rotor can be of either salient or nonsalient construction. The term salient means “protruding” or “sticking out,” and a salient pole is a magnetic pole that sticks out from the surface of the rotor.

Which type of winding is used in synchronous generator?

For synchronous machines, the field windings are on the rotor, so the terms “rotor windings” and “field windings” are used interchangeably….Construction of a synchronous generator.

Title: Synchronous machines (generator and motor) in a nutshell by Stephen J. Chapman
Size: 11.7 MB
Pages: 113

What are the features of synchronous machine?

Main Features of Synchronous Motors

  • Synchronous motors are inherently not self starting.
  • The speed of operation of is in synchronism with the supply frequency and hence for constant supply frequency they behave as constant speed motor irrespective of load condition.

What is meant by two reaction theory?

Two Reaction Theory was proposed by Andre Blondel. The theory proposes to resolve the given armature MMFs into two mutually perpendicular components, with one located along the axis of the rotor of the salient pole. It is known as the direct axis or d axis component.