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Grid impedance estimation for islanding detection and adaptive control of converters

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Figure

Fig. 1. Configuration of grid connected converter and SVPWM.  a Three-phase grid connected converter test system
Fig. 1-c shows a representation of the basic space-vector and the reference voltage vector in the stationary
Fig. 1-d shows typical PWM outputs in sector one and the three fixed measurement instants in each sampling period, which are marked as k-2 at the beginning, k-1 at Ts/4 and k at the middle of the sampling period
Table 1 System parameters.
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