ed analysis.xlsx - POWER ELECTRONICS Name of the faculty Sl No 1 2 3 4 5 6 7 8 9 10 11 12 EDCO1:Study the EDCO2 Study EDCO3:Develop different braking

ed analysis.xlsx - POWER ELECTRONICS Name of the faculty Sl...

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POWER ELECTRON Name of the faculty: Sl No Regn No Name Internal Test-1 Internal Test-1 1 1101326086 ABHIPSA BAI 4.00 4.50 5.00 5.00 5.00 5.00 2 1101326087 ABHISHEK K 4.00 4.00 4.00 4.00 4.00 4.00 3 1101326088 AJAY KUMAR 2.00 5.00 5.00 2.00 5.00 5.00 4 1101326089 AKASH SAGA 4.00 4.00 4.00 5.00 4.00 2.50 5 1101326090 AMAR KUMA 5.00 5.00 5.00 4.00 5.00 3.50 6 1101326091 AMIT KUMAR 4.00 4.00 1.00 2.00 4.00 5.00 7 1101326092 ANIMESH RAJ 5.00 5.00 4.00 4.00 5.00 4.00 8 1101326093 ANKESH KUM 4.00 5.00 5.00 2.00 4.00 3.50 9 1101326094 ANMOL KU.G 5.00 4.00 4.00 5.00 5.00 5.00 10 1101326095 ASHUTOSH S 5.00 5.00 3.00 4.00 1.00 4.00 11 1101326096 ASWINI KUM 1.00 5.00 4.00 5.00 4.00 2.50 12 1101326097 ABHINAB KU 4.00 4.00 2.00 5.00 5.00 4.00 EDCO1:Study the different braking operations of dc motor and learn different speed control methods and Its application. EDCO2: Study theapplication of dc and ac motors in industries. EDCO3:Develop knowledge on how to design the speed control and current control loops of a DC Motor drive. Internal Test- 1 Assignme nt-1 Assignme nt-1 Assignme nt-1 a) What are the basic elements of Electric drives?[CO1] e) Draw the speed torque variation of a type of load? [CO1] Q.3 establish the basic characteristics of the dc machines from the fundamental equation pertaining to dc machine.?[CO1] Q4. A dc supply of 200v supplied power to separately excited dc motor via a class A thyristors chopper. The motor has an armature circuit resistance of 0.33Ω and inductanc e of 11mH. The chopper is fully on at the rated motor speed 1200rpm when the armature current is 20A. If the speed is to be reduced to b) What are the difference between the active load torque and passive load torque? c) WHICH TYPE OF DC- DCCONVERTE R CAN BE USED TO ACHIVE regenerative BRAKING IN CASE OF A SEPARATELY EXCITED DC MOTOR? Q,4. Explain the principle of counter- current braking of dc motors.[CO2] A dc chopper controls a dc series motor. The supply voltage being 220 V dc, the field and armature resistance s are 0.2 and 0.3 ohm respective ly. If the back emf of the motor be 160 V, average armature current of 50 A, find the smooth and continuou s armature current, the input power from source, the input d) V/f not maintained constant above rated speed in case of inverter fed induction motor drive. Why?What are the advantages of Free Wheeling Diode.[CO3] Q.2 The speed of a 220V,3.73 kW, 1000 rpm d.c. motor is controlled by a single phase full converter. The ac supply is 240V, 50Hz. A very large inductance is in series with the armature. Assume the motor & converter to be lossless. The emf constant is 1.9 V sec/rad. For a speed of 1000 rpm & rated motor . A 220V , 960 rpm , 12.8 A separately excited dc motor has armature circuit resistance and inductanc e of 2 Ω and 150mH, respective ly. It is fed from a single – phase half controlled rectifier with an ac voltage of 230V , 50Hz . calculate (i) Motor torque for α = 600 and speed N = 600 rpm. (ii) motor speed for α = 600 and T = 20N-m. Q4.A
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13 1101326098 BAGMEE VIJA 5.00 5.00 4.00 4.00 4.00 5.00 14 1101326099 BAIJAYANT K 5.00 5.00 5.00 5.00 4.00 2.50 15 1101326100 BHARAT SING 4.00 4.00 4.00 5.00 5.00 4.00 16 1101326101 BIKASIT BIP 5.00 5.00 5.00 4.00 4.00 3.50 17 1101326102 BIMAL KU. C 4.00 5.00 4.00 5.00 5.00 4.00 18 1101326103 BINOD KUMA 5.00 4.00 5.00 5.00 4.00 2.50 19 1101326104 CHANDRAKAN 1.00 5.00 5.00 4.00 5.00 5.00 20 1101326105 CHINMAY KU.
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