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Unformatted text preview: X 1 =0.503 ohm Xm=13.25 ohm R 2 =0.144 ohm X 2 =0.209 ohm (stator side referred) When the motor is operated at rated voltage and rated frequency, the slip rate is 0.02, the total friction-windage losses are 403 W, ignore the core loss, calculate (a) Rotor speed (2 points) (b) Load power and torque (2 points) (c) Stator current, stator power factor (2 points) Problem 4: For a boost converter shown in the Figure, assuming C is big enough to hold constant voltage, at the following conditions: 200 L uH, 180 in V V, D=0.4, 5 R , Ts=100 us; 1) Calculate the inductor peak to peak current ripple; (2 points) 2) Calculate the DC component of L i ; (2 points) 3) Draw the inductor current L i , switch current 1 S i , diode current D i , switch voltage 1 S V , and switching status (2 Points) out V S1 L i in V C R L 1 S i D i +-1 S V +-+-...
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This note was uploaded on 03/26/2012 for the course ECE 341 taught by Professor Keyhani during the Winter '08 term at Ohio State.
- Winter '08