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Grid-Connection Control and Simulation of PMSG Wind Power

... ac  voltage  to  be  increased  without  an  output   transformer.  In  addition,  the  cancellation  of  low  frequency  harmonics  from  the  ac  voltages  at  the  different  levels  means  that  the  size  of  the  ac  inductance can be reduced, a consequent decrement of  the  expenses  of  the  ...
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Metadyne



A metadyne is a direct current electrical machine with two pairs of brushes. It can be used as an amplifier or rotary transformer. It is similar to a third brush dynamo but has additional regulator or ""variator"" windings. It is also similar to an amplidyne except that the latter has a compensating winding which fully counteracts the effect of the flux produced by the load current. The technical description is ""a cross-field direct current machine designed to utilize armature reaction"". A metadyne can convert a constant-voltage input into a constant-current, variable-voltage output.
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