AC Grid Side Phase A Phase B Phase C Neutral Diode Rectifier DC Bus Inverter Unit 本 本 KH BESS 国 K Bypass Switches Figure B2 Load Side Phase Neutral Main input voltage Rated total power Inverter switching frequency Output voltage Power efficiency 400 V, 3-phase 8 kW 10 kHz 230 V, single phase 93.3% (full load) 800 V BESS voltage Table B2

What is the ripple factor and what causes it? Discuss and explain how this factor can be used as a metric to improve the quality of the designed AC to DC converting system

Explain the PWM control and duty cycle generation in phase-control of SCR

iii. For fully controlled single phase bridge rectifier with inductive load (load current is continuous) ,supply voltage 220 V(RMS) and a=30° .The mean value of output voltage is : (a) 150.32V (b) 171.52V (c) 120.98V

what is the use of DC/DC tension converter DC/DC booster MT3608

A load consists of  XL=70  and XC=150  are connected in parallel across 120 Volt supply.The reactive power of the circuit is.......

A step-up chopper has input voltage of 220 V and output voltage of 660 V. If the conducting time of the IGBT based chopper is 100 micro- sec, then duty cycle will be a. -0.66 b. 0.7 c. 1.66 d. 0.66

Which of the following statements about bridge tip rectifiers is false? A) If the 1-phase type has source inductance, the average value of the output voltage is lower than in the absence of the inductance. B) The average output voltage value of the 1-phase type is 0.9 times the peak voltage of the network. C) none D) There are only odd harmonics in the current drawn by the 1-phase type from the mains. E) The average value of the output voltage of the 3-phase type is larger as the 3-phase and 1-phase types are compared

1) AC power in a load can be controlled by using a. Two SCR's in parallel opposition b. Two SCR's in series c. Three SCR's in series d. Four SCR's in series 2) The advantage of using free - wheeling diode in half controlled bridge converter is that a. There is always a path for the ac current independent of the ac line b. There is always a path for the dc current independent of the ac line c. There is always a path for the dc current dependent of the ac line d. There is always a path for the ac current dependent of the ac line 3) Silicon controlled rectifier can be turned on a. By applying a gate pulse and turned off only when current becomes zero b. And turned off by applying gate pulse c. By applying a gate pulse and turned off by removing the gate pulse d. By making current non zero and turned off by making current zero

A single phase full converter feeds power to RLE load with R=10 ohm, L=10 mH and E=50 V, the ac source voltage is 230 V, 50 Hz. For continuous conduction, what is the average value of load current for firing angle delay of 600 ?