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The main advantages of the dual converter with circulating current operation is/are
1. the efficiency and power factor are more.
2. it has faster operation than dual converter without circulating current.
3. the thyristors are rated for lower current.
1. the efficiency and power factor are more.
2. it has faster operation than dual converter without circulating current.
3. the thyristors are rated for lower current.
Choose the correct code from the following
- a)1 and 2
- b)1 and 3
- c)2 only
- d)3 only
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The main advantages of the dual converter with circulating current ope...
Circulating current gives rise to more losses in the converters, hence the efficiency and power factor are low. Thus, statement-1 is false.
In a non-circulating current type dual converter, the normal delay period of 10 to 20 ms is required while no delay period is required in circulating current type dual converter. Therefore, circulating current type dual converter is faster than non-circulating type dual converter. Thus, statement-2 is true.
As the dual converter with circulating current has to handle load current as well as circulating currents, therefore the thyristors are rated for higher currents. Hence statement-3 is false.
In a non-circulating current type dual converter, the normal delay period of 10 to 20 ms is required while no delay period is required in circulating current type dual converter. Therefore, circulating current type dual converter is faster than non-circulating type dual converter. Thus, statement-2 is true.
As the dual converter with circulating current has to handle load current as well as circulating currents, therefore the thyristors are rated for higher currents. Hence statement-3 is false.
Most Upvoted Answer
The main advantages of the dual converter with circulating current ope...
Advantages of Dual Converter with Circulating Current Operation
Efficiency and Power Factor Improvement:
- Dual converters with circulating current mode provide better efficiency and power factor compared to the conventional dual converter.
- In this mode, the circulating current flows between the two converters, which helps in reducing the voltage drop across the AC supply and thus improves the power factor.
Faster Operation:
- Dual converters with circulating current operate faster than the conventional dual converter.
- The circulating current helps in reducing the firing angle of the thyristors, which improves the response time of the converter.
Lower Rated Thyristors:
- In the circulating current mode, the thyristors are rated for lower current, which reduces the cost of the system.
- This is because the circulating current reduces the current stress on the thyristors, allowing them to be rated for a lower current.
Conclusion:
Thus, the correct option is (C), which states that the advantages of the dual converter with circulating current operation are faster operation compared to the conventional dual converter and the thyristors are rated for lower current.
Efficiency and Power Factor Improvement:
- Dual converters with circulating current mode provide better efficiency and power factor compared to the conventional dual converter.
- In this mode, the circulating current flows between the two converters, which helps in reducing the voltage drop across the AC supply and thus improves the power factor.
Faster Operation:
- Dual converters with circulating current operate faster than the conventional dual converter.
- The circulating current helps in reducing the firing angle of the thyristors, which improves the response time of the converter.
Lower Rated Thyristors:
- In the circulating current mode, the thyristors are rated for lower current, which reduces the cost of the system.
- This is because the circulating current reduces the current stress on the thyristors, allowing them to be rated for a lower current.
Conclusion:
Thus, the correct option is (C), which states that the advantages of the dual converter with circulating current operation are faster operation compared to the conventional dual converter and the thyristors are rated for lower current.
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The main advantages of the dual converter with circulating current operation is/are1.the efficiency and power factor are more.2.it has faster operation than dual converter without circulating current.3.the thyristors are rated for lower current.Choose the correct code from the followinga)1 and 2b)1 and 3c)2 onlyd)3 onlyCorrect answer is option 'C'. Can you explain this answer?
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