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How do you design power factor correction module for 3 phase?
using vienna rectifier
What is the use of transformer utilisation factor?
It tells us how much is the transformer utilised in a given process. For a rectifier,TUF =(D.c.power delivered to the load)/(power rating of transformer secondary)
How do you correct the power factor of a capacitor power supply?
Assuming the question refers to a capacitor-input power supply with a transformer, rectifier and reservoir capacitor, the problem is caused by the high peak currents which flow for only a part of the ac cycle while the capacitor is charging. Thus the poor power factor is not caused by the usual difference in phase between the voltage and the current, which is easily corrected. This being the case the power-factor can't easily be corrected and this type of power supply is confined to low-power applications of less than 1 kW.
Block diagram of smps?
A block diagram of SMPS has a main filter, primary rectifier, and power switch. It also has an output transformer, secondary rectifier, smoothing circuit, and controller.
Why bridge rectifier is prefered more over centre tap rectifier?
A: the only reason that can be is you get twice the voltage minus a diode drop. That does not means twice the power but actually a little bit less/
What is the importance of ripple factor?
Ripple factor ripple factor is very important in deciding the efficiency of the rectifier .ripple factor give the total power converted AC input to the DC output. Ideal ripple factor should be zero and power factor 1. Ripple factor of half wave rectifier 1.21 and full wave rectifier is 0.48.
How do you design power factor correction module for 3 phase?
using vienna rectifier
If power factor is 8 then how many ampere there will be in each phase of a 250 kva transformer?
The power factor is only taken into consideration when the Kilowatts of a transformer is used.
What has the author A K Ahmed written?
A K. Ahmed has written: 'Power factor correction of single-phase rectifier circuits with non-sinusoidal supply voltage'
Define the efficiency of a rectifier?
The conversion efficiency n of a rectifier ckt is generally defined as Na= dc power delivered to the load/ ac power input to the rectifier ckt. Or n = Pdc/Pac
What is the use of transformer utilisation factor?
It tells us how much is the transformer utilised in a given process. For a rectifier,TUF =(D.c.power delivered to the load)/(power rating of transformer secondary)
What is the component of the system unit that coverts AC power into DC power?
Rectifier
4 What is the difference between a transformer and a rectifier Which are found in a PC power supply?
A rectifier is a device that converts alternating current to direct current. A transformer is a device that changes the ratio fo current to voltage. A rectifier is found in a PC power supply.
Under the policy of realpolitik what was the most important consideration in formulating a relationship with another country?
Its power.
Where you can use full wave rectifier?
Basically , rectifier is used to convert a.c into d.c . The bridge rectifier is used in all power supply section of all device which are operated on D.C supplly. For example in TV the circuit board is operated at 12 V D.C. so we need dc supply which is provided by rectifier. All SMPS ( Switched Mode Power Supplies) uses Bridge rectifier.
What are the Main parts of Ups?
The main parts of UPS (Uninterruptible Power Supply) are the battery, inverter, and rectifier. The battery stores energy, the inverter converts DC power to AC power, and the rectifier converts AC power to DC power to keep the battery charged.
Which provide more power and why full wave or half wave rectification?
full wave rectifier, because in half wave rectifier only one p-n junction diode Ans 2. In full wave rectifier both negative & positive cycles are rectified , but , in half wave rectifier only the positive or the negative cycle is rectified . That's why full wave rectifier provides more power .
