System Efficiency of a Tap Transformer Based Grid Connection Topology Applied on a Direct Driven Generator for Wind Power

Table 1

Turbine and generator parameters.

Optimal tip speed ratio	4
Rated power (kW)	12
Nominal phase voltage (V)	161
Nominal electrical frequency (Hz)	33.9
Per phase generator resistance ()	0.151
Per phase generator inductance (mH)	2.6