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In comparing the operation of the half-controlled 2-pulse circuit with that of the fully-controlled circuit, which of the following statements are evident? 1. Since half the thyristors are replaced by diodes, a half-controlled converter costs less than a fully-controlled converter. 2. Due to the freewheeling action with a half-controlled bridge-circuit power factor is improved in half-controlled converters. 3. The AC supply current is more distorted due to its zero periods with the half-controlled circuit, compared to a fully-controlled bridge circuit. Select the correct answer using the code given below :

In comparing the operation of the half-controlled 2-pulse circuit with that of the fully-controlled circuit, which of the following statements are evident? 1. Since half the thyristors are replaced by diodes, a half-controlled converter costs less than a fully-controlled converter. 2. Due to the freewheeling action with a half-controlled bridge-circuit power factor is improved in half-controlled converters. 3. The AC supply current is more distorted due to its zero periods with the half-controlled circuit, compared to a fully-controlled bridge circuit. Select the correct answer using the code given below : Correct Answer 1 and 2 only

Difference Between Half Wave and Full Wave Rectifier:

PARAMETERS HALF-WAVE RECTIFIERS FULL-WAVE RECTIFIERS
Rectification Efficiency 40.60% 81.20%
Ripple Factor 1.21 0.482
Transformer Utilization Factor 0.286 0.692
Voltage Regulation Good Better
The fundamental frequency of the ripple Equal to Supply Frequency, f Double of Supply Frequency, 2f
Form Factor 1.57 1.11
Peak Factor 2 1.414
Number of diodes Only 1 Vary from 2 to 4, 4 in case of the bridge rectifier
Peak Inverse Voltage Vs 2 Vs
DC Output Voltage Imax/π RL 2/π RL Imax
Cost less More (as more components are used)
PF More Less

 

Related Questions

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