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Unformatted text preview: . Using reference frame transformation, and Kirchoff’s laws, show that . Then show that . The input impedance of the circuit , Explain how you would use the measured to find . 5) For the 4-pole synchronous machine shown in Figure 1.4-7, first express in terms of the mechanical rotor position, in a similar form as that presented in Lecture 17. Subsequently, express in terms of the electrical rotor position . Show that when expressed in terms of the rotor position, it is the same as for a 2-pole machine. Subsequently, for the flux linkage expression , derive expressions for all components in the induc-tance matrices. 6) Problem 5.6. θ r = v ds r 2 3--v s = i ds r i s = Z in V s ˜ I s ˜-----= Z in L d L asas θ rm · L asas θ r · λ abcs L s θ r ( 29 i abcs L sr θ r ( 29 i fd + =...
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- Fall '08
- Energy, Expression, Physical quantities, rotor position, so-called standstill frequency