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Assertion (A): An inverter does not require forced commutation
Reason (R): A series inverter is a forced commutation inverter.
- a)Both A and R are correct and R is correct explanation of A
- b)Both A and R correct but R is not correct explanation of A
- c)A is correct but R is wrong
- d)A is wrong but R is correct
Correct answer is option 'D'. Can you explain this answer?
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Assertion (A): An inverter does not require forced commutation Reason...
Some inverters require forced commutation.
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Assertion (A): An inverter does not require forced commutation Reason...
Assertion and Reasoning:
Assertion (A): An inverter does not require forced commutation.
Reason (R): A series inverter is a forced commutation inverter.
Explanation:
An inverter is an electronic device that converts DC voltage to AC voltage. The inverter circuit consists of power electronic switches (transistors or thyristors) and a DC voltage source. The switches in the inverter are turned on and off at a high frequency to create a stepped AC waveform that can be filtered to produce a sinusoidal waveform.
Forced commutation is the process of turning off a power electronic switch when it is conducting current. This is necessary to prevent the switch from overheating and damaging the device. There are two types of forced commutation: line commutation and forced commutation.
In a line commutated inverter, the power electronic switches are turned off when the AC waveform crosses zero. This process is automatic and does not require any additional circuitry. However, line commutation is only possible when the AC load is inductive.
In a forced commutated inverter, the power electronic switches are turned off by an external circuit. This circuit can be a capacitor or a resonant circuit. The forced commutation circuit is necessary when the AC load is capacitive or resistive.
The assertion that an inverter does not require forced commutation is incorrect. All inverters require forced commutation, either through line commutation or forced commutation.
The reasoning that a series inverter is a forced commutation inverter is also incorrect. A series inverter is a type of inverter that uses a series resonant circuit to force the current through the load. However, this does not mean that it does not require forced commutation. The series resonant circuit is used to shape the AC waveform and improve the efficiency of the inverter, but forced commutation is still necessary to turn off the power electronic switches.
Therefore, option D is the correct answer.
Assertion (A): An inverter does not require forced commutation.
Reason (R): A series inverter is a forced commutation inverter.
Explanation:
An inverter is an electronic device that converts DC voltage to AC voltage. The inverter circuit consists of power electronic switches (transistors or thyristors) and a DC voltage source. The switches in the inverter are turned on and off at a high frequency to create a stepped AC waveform that can be filtered to produce a sinusoidal waveform.
Forced commutation is the process of turning off a power electronic switch when it is conducting current. This is necessary to prevent the switch from overheating and damaging the device. There are two types of forced commutation: line commutation and forced commutation.
In a line commutated inverter, the power electronic switches are turned off when the AC waveform crosses zero. This process is automatic and does not require any additional circuitry. However, line commutation is only possible when the AC load is inductive.
In a forced commutated inverter, the power electronic switches are turned off by an external circuit. This circuit can be a capacitor or a resonant circuit. The forced commutation circuit is necessary when the AC load is capacitive or resistive.
The assertion that an inverter does not require forced commutation is incorrect. All inverters require forced commutation, either through line commutation or forced commutation.
The reasoning that a series inverter is a forced commutation inverter is also incorrect. A series inverter is a type of inverter that uses a series resonant circuit to force the current through the load. However, this does not mean that it does not require forced commutation. The series resonant circuit is used to shape the AC waveform and improve the efficiency of the inverter, but forced commutation is still necessary to turn off the power electronic switches.
Therefore, option D is the correct answer.
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Assertion (A): An inverter does not require forced commutation Reason (R): A series inverter is a forced commutation inverter.a)Both A and R are correct and R is correct explanation of Ab)Both A and R correct but R is not correct explanation of Ac)A is correct but R is wrongd)A is wrong but R is correctCorrect answer is option 'D'. Can you explain this answer?
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