Wind_Energy_Essentials_Lecture 4

Mohan 2010 36 torque speed characteristics temrated 0

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Unformatted text preview: s Electronics Converters © Copyright N. Mohan 2010 Power Electronics as an Interface: Power Electronics Interface Converter Source Controller Load © Copyright N. Mohan 2010 40 Voltage-Link System conv1 utility conv2 Load controller © Copyright N. Mohan 2010 41 Power and Reactive Power Control conv1 utility conv2 Load controller I Vconv jX Vconv Vs I ( b) Vs jXI Re (a ) © Copyright N. Mohan 2010 42 Step-Down (Buck) Converter Filter Vin A vA Vo d Tup Ts vA vA V A Vo V A Vo dVin © Copyright N. Mohan 2010 43 Realizing a Bi-Positional Switch in Step Co A Step-Down Converter q 1 iL iL Vo (a) Vin q iL Vin qA 1 Vo iL Vo (c) Vin (b) qA 0 © Copyright N. Mohan 2010 44 Step-Up (Boost) Converter iL Vo C vL Vin q p © Copyright N. Mohan 2010 45 Bi-Directional Power Flow iL V1 A vA V2 q q (1 q ) © Copyright N. Mohan 2010 46 Synthesizing Sinusoidal AC: q 1 iL q vaN Vd vaN vaN 0 vaN 0 0 Ts t © Copyright N. Mohan 2010 47 Interface for Wind Generator va (t ) ia (t ) A i A (t ) e A (t ) B Vd n C N Vd v AN v An 1 Vd 2 © Copyright N. Mohan 2010 0 t 48 a b ia ib c v vc b Basic Voltage Vectors v a Vd ic a vs (t...
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