The advantage of free wheeling diode in a Full Ware
rectifier is
-reduces the harmonics
-Supplies the voltage at negative vlotage
Answers were Sorted based on User's Feedback
Answer / zan
yes i agreed..
A flyback diode( sometimes called free wheelingdiode)
reduce harmonics and also it reduce the voltage spike seen
occure in an inductive load.
Is This Answer Correct ? | 17 Yes | 2 No |
A Free Wheel Diode (FWD) at the output of a full wave rectifier will:
1) Increase DC voltage for a given firing angle due to the elimination of negative portions of the instantaneous dc waveform in a SCR phase controlled converter,
2) Will reduce the generated ripple voltage on the DC side of a SCR phase controlled converter due to same reason as in above, reducing the filtering requirements.
3) Will improve the input PF in an SCR phase controlled converter due to ending the input current waveform earlier by permitting internal free-wheeling.
However, the above will happen only if (a) the DC side has sufficient inductance either as filter or as part of load, (b) the firing angle is more than 30 deg for 3-phase, only after which the negative portion appears. Note that there will be no benefit in a diode rectifier since the FWD is always reverse-biased.
Also note that use of the FWD prevents operation of the SCR converter in inversion mode.
Is This Answer Correct ? | 7 Yes | 1 No |
Swg formulae
What do you mean by reach and reach the point of the relay?
Basic motor transformer generator
WHY TERTIARY OF POWER TRANSFORMERS IS LOADED WITH EQUIPMENTS LIKE CT,PT,ISOLATOR AND CB
Direction of flow of active power and reactive power with logic?
Necessity of transformer earthing
What is farmula to calculate Diesel cunsumption as par KVA.
how digital four pin earth resistance tester works
How to select the ratio of neutral ct? Is there any relation in between percentage impedance and neutral ct ratio ?
how to find the voltage drop
1 Answers Sharjah Electricity and Water Authority SEWA,
what is diffrence between primary & secondry transformer?
What do you mean by isolators and circuit breakers?
6 Answers Bhushan Power Steel,