What happens if the positive and negative bridges of the cycloconverter conduct together?
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What happens if the positive and negative bridges of the cycloconverter conduct together?
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- Q3) A single-phase bridge-type Cycloconverter has input voltage of 230V and 50Hz and load of R-1012. Output frequency is one-third of input frequency. For a firing angle delay of 30° Step up a) Draw the circuit and explain the operation of the Cycloconverter 4th b) Derive an expression for output voltage c) Calculate (1) RMS value of output voltage (2) RMS current of each converter (3) RMS current of each thyristor and (4) input power factor.#4 the input voltage of a three phase inverter is 600Vdc, what is the duty cycle for phase a as a function of time to generate 270cos(ot)V phase voltage? #5 how to generate 460V 400HZ three phase voltages from 460V 60HZ three phase voltage?g- In a single-phase full converter, for discontinuous load current and angle ß > π, each SCR conducts for .............. 1- α, 2- ß-a, 3-B, 4- a+ß 5- None of previous. i- The number of thyristors required for three phase to three-phase 3-pulse type cycloconverter are ........... respectively 1-6, 2-12, 3-18, 4-36, 5-24. The peak voltage of UJT is ........... 1-VB2B1, 2- VB2B1+0.6, 3- VB2B1+0.6, 4-VB2B1, 5-None of previous. j- K The time available to turn-off thyristor in load-commutated chopper is 3- 2E2Cf, 4-E²C, 5- None of previous. 10 lo 2EC 1-2, 2-, EC
- Question: In bridge type stepup cycloconverter during positive half cycle of supply voltage.'Ph' is positive with respect to 'N'. The circuit completes its path as Option 1: N- P2- load - P3 - Ph Option 2: Ph- P2- load - P3 N Option 3: N- P1- load - P2 Ph Option 4: Ph- P1- load- P2 N2. A single-phase to single-phase cycloconverter "bridge type" with input voltage and frequency 150V and 60Hz respectively. The output frequency is 15Hz and the firing angle equal to 90°. The load is resistance with the value of 500. i. Draw the waveforms output voltage, output current, source current, the thyristors currents (iT, IT, IT and in). a. Calculate the rms of output voltage. b. Calculate the rms of output current and thyristor current. ii. If the firing angles of thyristors "with different firing angles technique". Draw the complete waveforms and comment on the results.With base MVA of 150 and base voltage of 33. If the reactance of the transformer is 0.23 pu. The parameter of the reactance of the transformer in the Neplan software is O 1.66 2.30 23 0.23 O Non of them
- Y Design a half-bridge inverter for the following specifications. Vd=131-159 V Vo= 220 V RMS, f=50 Hz Po=550 W AIL= 5 A at the worst case fs-10 kHz Draw the schematic including the PWM.gènerator blocks. Assume open loop control. Find the turn ratio of the transformer to be used. Assume 95% voltage regulation efficiency. Find the range of ma based on the selected transformer. Find mf. Find L and C values of the output filter. Explain the reason why topology uses antiparallel diodes in the switches. Answers: n=5 ma-1-0.8239 mf=200 / L=795 uH C=31.862 uFDo the following: Solve for the voltage across the appliance and the current through it by referring the appliance to the transformer primary. (Assign the convenience outlet voltage as the reference phasor i.e. at 0o) Draw the circuit that would solve for VL and IL. Compute all referred values and label all components. Solve for VL and IL“Electronic regulators are better than resistive ones in many aspects to control AC power” – explain with suitable examples and aspects. Out of on-off and phase control used in AC regulator, describe which one is better and why. Define a cycloconverter and write its application areas.
- 4. In three phase Cycloconverter, the reduction factor is given by frequency) / 8 frequency) frequency) / 6 frequency)/3 a) (input frequency/output b) (input frequency/output c) (input frequency/output d) (input frequency/outputA single-phase to single-phase cycloconverter is supplying and inductive load comprising of a resistance of 52 and an inductance of 40 mH from a 230 V, 60 Hz single-phase supply. If the output frequency is 20 Hz and firing delay angle ap = 120°. Neglecting the harmonic content of load voltage, (a) Explain the Working of the converter (b) Determine the output rms value of output voltage. (c) Rms current of each thyristor. (d) input power factor.A single phase Cycloconverter, if the input supply voltage is Vs= 220 V with frequency (f= 50 Hz) and the trigger angle (a= 45°), the conduction angle (0=168°) and the load is (R=10 2 in series with L= 18.377 mH). Then determine the followings:- I 1) Draw the Cycloconverter circuit. 2) Determine the value of load angle (Þ). 3) Determine the value of the commutation angle (3). 4) Draw to scale the input voltage and current, the output voltages and the current waveforms. 5) Determine the mean and rms values of the output voltage.