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1. Explain the difference between rotor speed and rotor frequency. For s = -0.01 and a rotor speed of 1740 rpm, what is the rotor frequency for a 60 Hz induction generator?
2. Explain why the efficiency of an induction generator can be smaller when working as an asynchronous motor under certain conditions.
3. Calculate the efficiency of a 110 V, 60 Hz induction generator connected directly to the grid with the following parameters: Rm = 36.2 Ω; losses equal to 0.8% of the rated power; s = -0.03; R1 = 0.2 Ω; R2 = 0.15 Ω; X1 = 0.42 Ω; X2 = 0.43 Ω.
Describe why a manager needs to understand the characteristics and importance of financial markets including risk and efficiency. Describe why cash flow is more important tha
Explain why in cases of loads sensitive to frequency variation it is not recommended to connect an IG in parallel with a synchronous generator of comparable rated output pow
Calculate the eigenvalues and eigenvectors of Equation 3.11 to establish the oscillating modes of the operation of the IG. Hint: Find the roots of the denominator of the tra
Using the state variable theory for the generalization of an aggregation of SEIGs, write a matrix system for an aggregation of three IGs with distinct machine parameters. Wh
Gas turbine and compressed air systems will serve as prime movers at a very high speed. Discuss the design characteristics of an induction generator for those applications.
A full-bridge three-phase rectifier supplies energy to a dc load of 300 V and 60 A from a three-phase bridge of 440 V through a ΔY transformer. Select a diode and specify th
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