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  _____     ______   ______      ___      _____   
 |__  //   /_   _// |      \\   / _ \\   / ____|| 
   / //     -| ||-  |  --  //  / //\ \\ / //---`' 
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 `-----`   `-----`  `------`  `-`   `-`   `----`

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Text this: The 3-phase 4-wire voltage sag generator based on three dimensions space vector modulation in abc coordinates