INSTITUTE OF AERONAUTICAL ENGINEERING

Transcription

1 Course Name Course Coe Class Branch INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dunigal, Hyeraba DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING TUTORIAL QUESTION BANK : Power Electronic control of c Drives : BPE00 : I - M. Tech II Sem : PEED Year : Course Faculty : Mr. P.SHIVAKUMAR S.No QUESTION BLOOMS TAXONOM YLEVEL COURSE OUTCOME UNIT I PWM INVERTERS(SINGLE PHASE AND THREE PHASE) What is mean by PWM control? 2 What are the avantages of PWM control? Remember What are the methos of reuction of harmonic content? Remember 4 Compare VSI an CSI Remember What are the isavantages of PWM control? Remember 6 What are the applications of -φ Inverters Remember 7 What are the applications of -φ Inverters Unerstan 8 Explain the working operation of -φ brige Inverter Remember 2 9 Explain the working operation of -φ brige Inverter Remember 0 Compare PWM technique an space vector moulation Remember Compare PWM technique an harmonic reuction current source inverter Remember 2 List the isavantages of the harmonics present in the inverter system. Unerstan Draw the circuit iagram of single phase full brige inverter Unerstan 4 Draw the circuit iagram of three phase full brige inverter Unerstan Explain the principal of operation of single phase inverter with resistive loa with the help of circuit iagram an wave forms Analyze

2 2 Discuss the following performance parameters of -φ inverter a) Harmonic factor b) Total harmonic istortion c) Distortion factor M ) Lowest orer harmonic Unerstan The single phase half brige inverter has a resistive loa of R=2.4Ω an the DC input voltage Vs=48V Determine a) RMS out put voltage at funamental frequency b) out put power c) average an peak current of each transistor ) THD 4 Explain the working operation of -φ brige Inverter with circuit iagram an wave forms The brige inverter has an RLC loa with R=0Ω, L=0.mH an C=0.2µF. Inverter frequency is f0= 60Hz an DC input voltage is 220V calculate a) RMS loa current b) THD c) power absorbe by the loa 6 Briefly iscuss about the voltage control of single phase inverter of a) Single pulse PWM control b) Multi pulse PWM control c) Sinusoial PWM control Analyze Remember Remember Unersta n 7 Write short notes on a) Moifie PWM control b) Phase isplacement Control 8 Explain the following avance moulation techniques a) Trapezoial b) Stair case 9 Discuss about a) Steppe harmonic Injection b) Delta moulation Unerstan 0 0. a) List out the avantages of -φ inverters b) What are the applications of -φ Inverters Explain the operation of -φ PWM inverter of 80 egree Conuction of out put voltage with resistive loa Remember 2 Explain the operation of -φ PWM inverter of 20 egree Conuction of out put voltage with resistive loa A -φ inverter has a star connecte loa of R=Ω an L=20mH. The inverter frequency of fo=60hz an a c input voltage of Vs=220V etermine a) RMS line voltage b) RMS phase voltage c) THD ) HF 4 Explain the following voltage control technique of -Φ inverter a) Sinusoial PWM control b) Thir harmonic PWM control Write short notes on a) 60 egree PWM control b) Space vector moulation 6 Write short notes on a) Variable c link inverter b) Boost inverter

3 7 a) Explain the operation of Buck an Boost inverter with suitable iagrams b) What are the steps taken for esigning inverter circuit 8 a) List out avantages an isavantages of -Φ PWM inverter b) What are the applications of -Φ PWM inverters UNIT II RESONANT PULSE INVERTERS Write short notes on series resonance inverters 2 Draw the iagram of half brige resonant inverter Unerstan 2 Compare half brige an full brige resonant inverters Remember 2 4 Discuss about parallel resonant inverter Discuss about frequency response of series resonant inverter 6 Compare L type ZCS an M type ZCS resonant converters Unerstan Write short notes on ZCS resonant converter Write short notes on ZVS resonant converter What are the applications of resonant DC link inverters What are the avantages of biirectional switches in inverters unersta 2 2 Describe working of series resonant inverters with uniirectional switches Explain operation of full brige resonant inverters an raw the waveforms Evaluate 2 Write short notes on the following: Evaluate i) Parallel resonant inverters ii) Class E inverter an rectifier Evaluate inuctance an capacitance for a zero current switching inverter Describe working of series resonant inverters with biirectional switches Explain operation of half brige resonant inverters an raw the waveforms

4 7 Write short notes on the following: Unerstan 2 8 i) L type ZCS resonant converter ii) M type ZCS resonant converter Explain the operation of two quarant ZVS resonant converter 9 Unerstan 2 Explain the operation of half brige an full brige resonant inverters with biirectional switches 0 2 Explain the operation of following: a) Zero current switching resonant converters b) Zero voltage switching resonant converters c) List the comparisons between ZCS an ZVS resonant converters Describe the operation of the following: a) parallel resonant inverter b) series resonant inverter Unerstan 2 UNIT III MULTI LEVEL INVERTERS Define inverter. unerstan 2 List the main classifications of inverters. Unersta n Specify the reasons why thyristors are not preferre for inverters? Rememb 4 Discuss the applications of an inverter. er Analyze Discuss why ioes shoul be connecte in anti parallel with the thyristors in inverter circuits? unerstan 6 What is the function of flying capacitors? unerstan 7 List the classifications of multi level inverter Analyze 8 Write the features of multi level inverters unerstan 9 What is the function of ioe clampe inverter? unerstan 0 What are the applications of multi level inverter? Analyze Describe the concept of multilevel inverters with neat iagram an waveforms Evaluate

5 2 4 Explain the function of capacitors use in multilevel inverters an how these capacitor values are selecte for proper operation Categorize the effects of multilevel inverters on switch stress an how these effects are eliminate with conventional elements Explain the process for selection of conventional elements to reuce the effects Explain the effect of multilevel inverters on AC motors with neat iagram an waveforms Remember Unerstan Evaluate Unerstan 6 Describe which multilevel inverter is most suitable for the proper operation of synchronous motor spee control? Analyze 7 Distinguish sinusoial pulse with moulation an space vector pulse Unerstan 8 with moulation techniques in multilevel inverters with neat waveforms. Explain the principle,features an applications of multilevel inverters Evaluate 9 Explain the methos of reactive power compensation in multilevel inverters Unerstan 0 Discuss about principle,operation an features of flying capacitor an multilevel inverter. Unerstan List the features an applications of multilevel inverters an converters Analyze 2 Briefly iscuss about classifications of cascae multilevel inverters Remember UNIT IV DCPOWER SUPPLIES What are the applications of DC power supplies Analyze 4 2 What is the function of fly back converter Unerstan 4 What is the function of forwar converter Analyze 4 4 What is the function of push pull converter Remember 4 What are the classifications of DC power supplies Unerstan 4 6 Draw the iagram of Half brige converter Unerstan 4 7 Draw the iagram of full brige converter Unerstan 4 8 What are the applications of biirectional power supplies? Unerstan 4 9 List the avantages of switche moe power supplies Unerstan 4 0 Write short notes on resonant DC power supply Unerstan 4

6 Explain the following: Remember 4 i) fly back converter ii) forwar converter iii) push pull converter 2 Describe the classifications of DC power supplies,features an applications Remember 4 Describe the operation of half brige an full brige converters an write the avantages Remember 4 4 Explain the operation of biirectional power supplies an applications Unerstan 4 Explain the following: i) Half brige converter ii) Full brige converter Analyze 4 6 Explain the operation of fly back converters, push pull converter an list the avantages Analyze 4 7 Explain the operation of forwar converter an resonant c power supply Unerstan 4 8 Write short notes on the following: i) switche moe power supply ii) biirectional power supply 9 Compare the avantages an isavantages of half brige an full brige converter Analyze 4 Unerstan 4 0 Explain the operation of switche moe power supplies an applications Analyze 4 UNIT V AC POWER SUPPLIES What is the function of Control circuits Evaluate 2 What are the applications of Biirectional ac power supplies Evaluate What are the avantages of Multistage conversions Remember 4 What are the causes of power line isturbances Evaluate What is the function of power conitioner Evaluate 6 List the methos to prouce uninterruptible power supplies Unerstan 7 Compare switche moe ac power supplies an resonant ac power supplies Unerstan 8 List the classifications of AC power supplies Unerstan

7 9 What is the necessity of AC power supplies Unerstan 0 What are the avantages of AC power supplies Unerstan Explain the following: i) Biirectional ac power supplies ii) Control circuits iii) Multistage conversions Remember 2 Explain about switche moe ac power supplies an uninterrupte power supplies supplies an applications Explain about power line isturbances, power conitioner an resonant AC power supplies Remember Remember 4 Describe the classifications of AC power supplies features an applications Remember Describe about uninterruptible power supplies an applications Analyze 6 Explain the following: i) power line isturbances ii) power conitioner 7 Explain iii) about multistage switche moe conversions ac power supplies an resonant ac power supplies Unerstan Analyze 8 Describe the classifications of AC power supplies,features an applications Unerstan 9 Describe the classifications of Multistage conversions features an applications 0 Describe the classifications of biirectional ac power supplies features an applications Analyze Analyze