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Electricity and Electronics for Renewable Energy Technology
book

Electricity and Electronics for Renewable Energy Technology

by Ahmad Hemami
September 2017
Intermediate to advanced content levelIntermediate to advanced
824 pages
22h 58m
English
CRC Press
Content preview from Electricity and Electronics for Renewable Energy Technology

Appendix C: Special Transformers

C1.1 Zigzag Transformer

A zigzag transformer, alternatively known as an interconnected-star (or wye) transformer, is a three-phase special transformer for the purpose of creating a neutral point for grounding, where there is not such a point available. For example, in three-phase lines coming out of a delta connection, there is no neutral reference point. Also, in transformers where for a technical reason a delta connection is compulsory and for fault protection it becomes necessary to have a ground reference, a zigzag transformer can provide the neutral point.

In a zigzag transformer each phase has two identical windings wound in opposite directions to each other, similar to that in Figure 10.4. In other words, ...

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Publisher Resources

ISBN: 9781482261783