Livre Power, Lda.

Outubro 12 2010

The easiest way to make a three-phase alternator is called with the star connection. It is called so because, when represented in scheme looks like a star, or the letter Y.

With the support of the diagrams will describe the connections that are made. So that no doubts remain, we call initial point of a coil at the end of the enamelled copper wire where it began rolling, since the tip end is the end of the string that resulted from the court after the conclusion of the winding, being on the outside.

The first scheme is generic for a stator coils 12, with four coils in each phase. If we have 9, 6 or 3 reels only the process is always the same regardless of where applied: an engine that we want to turn a generator, a car alternator, etc..

The second diagram illustrates the practical application of the first, in this case the model of Hugh Piggott.

Suppose we want to do a three-phase alternator with 12 coils. The sequence is as follows: (numbered the reels to facilitate)

1 Introduced in the stator coils so that the tips initial scale are all facing the same side (the finals are for the other).


2 We took of the glaze all the tips to secure a perfect electrical contact.

3 We join with a blob of solder, the tips of the initial three adjacent reels (12, 11, 10), thus making the so-called star point. Please note that we properly isolate all connections to prevent unwanted contacts.

4 Switch on the tip end of the coil 12 to the initial point of the coil 9. The tip end of 9 to the end of the initial 6. The tip end of 6 to the end of the initial 3. The tip end of the third is the power output of one phase of the alternator.

5 Switch on the tip end of the coil 11 to the initial point of the coil 8. The tip end of 8 to the end of the initial 5. The tip end of 5 to the end of the initial two. The tip end of the second is the output of another phase of the alternator.

6 Switch on the tip end of the coil 10 to the initial point of the coil 7. The tip end of 7 to the end of the initial four. The tip end of 4 to the end of the initial one. The final tip is one of the power output of another phase of the alternator. Getting complete connections of all the coils.

Arménio Carreira às 06:48

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