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  3. b a threephase controlled rectifier shown in the fig q5...

Question: b a threephase controlled rectifier shown in the fig q5...

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b) A three-phase controlled rectifier shown in the Fig. Q5 is supplying a DC motor that has k-1 (Vs) and R-1(Ω). The rectifier is fed from a 208 V line-line source. 208 (V) -DFilter Fig. Q5 i. Calculate the maximum no-load speed of the DC motor The motor now is producing torque of 20 (N. m). What is the maximum speed the motor can achieve? For the case in b) calculate the total RMS current of the fundamental and the power factor at the AC side If the motor is now connected as a generator with a counter torque of 20 (Nm) at 1500 (rpm). What should be the delay angle and AC current? ll. iii. iv. 10 Marks]

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