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Elec467 Power Machines & Transformers Electric Machines by Hubert, Chapter 12 Topic: Self-excited and compound generators, load distribution.

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Presentation on theme: "Elec467 Power Machines & Transformers Electric Machines by Hubert, Chapter 12 Topic: Self-excited and compound generators, load distribution."— Presentation transcript:

1 Elec467 Power Machines & Transformers Electric Machines by Hubert, Chapter 12 Topic: Self-excited and compound generators, load distribution.

2 Self-excited shunt generator

3 Changing the output voltage

4 Flux and current relationship There is a incorrect connection in one of the above drawings. Which one is it? Examine the circuits using the right-hand rule for current flow.

5 Short on the output

6 Compensating windings Compensating winding are the stator coils wired to a separate DC source.

7 Magnetization curve

8 Adding a series inductor to a self-excited generator

9 Motor design considerations

10 Effect of adding a resistor to the series inductor of a self-excited generator 1.Adding a series inductor will increase the current flow. 2.Adding a resistor across the series inductor will change the rate at which the generator increase the current.

11 Protection circuit prevents current reversal


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