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Zigzag transformer
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== Applications == Zigzag transformers are often required by utilities when connecting three-phase inverters (usually for [[renewable energy]]) to the grid to provide a stable neutral voltage and prevent excessive phase-to-ground voltages. This also protects the switching devices inside the inverters, which are usually [[insulated-gate bipolar transistor]]s (IGBTs).<ref>{{Cite web |title=Zig-Zag Transformers |url=https://www.acutran.com/product/zig-zag-transformers/ |access-date=2021-02-11 |website=Acutran |language=en-US}}</ref>
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