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 ___________ commutation technique is commonly employed in series inverters.
  • a)
    line
  • b)
    load
  • c)
    forced
  • d)
    external-pulse
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
___________ commutation technique is commonly employed in series inver...
Load commuation is used in inverter in which L and C are connected in series with the load or C in parallel with the load such that overall load circuit is under damped.
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___________ commutation technique is commonly employed in series inver...
Load commutation technique
Load commutation technique is commonly employed in series inverters. This technique involves the commutation of the current flowing through the load to achieve the desired output waveform. In series inverters, the load is connected in series with the power source, and the commutation process is crucial for achieving proper switching and control of the inverter.

Working principle of load commutation technique
The load commutation technique works by controlling the current flow through the load in such a way that the desired output waveform is obtained. This technique relies on the switching of the power devices (such as thyristors) in the inverter circuit to achieve the desired commutation process.

Procedure of load commutation technique
The load commutation technique involves the following steps:

1. Triggering: The triggering circuit is used to initiate the turning ON of the thyristors in the inverter circuit. This is done by applying a triggering pulse to the gate terminal of the thyristors.

2. Commutation: Once the thyristors are turned ON, the load current starts flowing through them. To achieve load commutation, the current flowing through the thyristors needs to be transferred to another device or component in the circuit. This is typically done by using commutation diodes or capacitors.

3. Load current transfer: The commutation diodes or capacitors are connected in parallel with the thyristors to provide an alternate path for the load current. When the thyristors are turned OFF, the load current is transferred to these commutation components.

4. Turn-off process: After the load current is transferred to the commutation components, the thyristors are turned OFF by removing the gate triggering pulse. This ensures that the current flow through the load is interrupted and the load commutation process is completed.

Advantages of load commutation technique
- Allows for better control and regulation of the output waveform.
- Provides a reliable and efficient method of load commutation.
- Can be used for a wide range of applications, including motor drives, power supplies, and renewable energy systems.

Disadvantages of load commutation technique
- Requires additional components such as commutation diodes or capacitors, increasing the complexity and cost of the inverter circuit.
- The commutation process may introduce additional losses and reduce overall efficiency.
- The load commutation technique may not be suitable for high-power applications due to the limitations of the commutation components.
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___________ commutation technique is commonly employed in series inverters.a)lineb)loadc)forcedd)external-pulseCorrect answer is option 'B'. Can you explain this answer?
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