Talk:Zigzag transformer

From Wikipedia, the free encyclopedia

I think the description of how the topology actually looks is at least unclear (should "turn around" mean what I think is missing?). This paper was a lot more helpful on finding out what they do and how they look: http://www.ipst.org/TechPapers/2005/IPST05_Paper044.pdf Additionally, this paper provides the detail on how exactly ZigZag transformers help reduce harmonics, a claim that puzzled me at first.

Why it can be used to provide a path for short-circuit currents becomes more evident by pointing out that the reactance of a ZigZag transformer with equal number of windings on both legs involved for each phase is in symmetrical components proportional to [1 0 0; 0 1 0; 0 0 0], so the zero-system is always short-circuited, the reactance of the others can be chosen arbitrarily high to reduce ohmic losses.