During single phasing unbalanced stator current have negative sequence component which cause
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Negative sequence flow in the system occurs when :
There exists an unbalance in voltage and current components both in magnitude and phase value.
The negative sequence will have the same magnitude as the positive sequence but rotation occurs in the opposite direction of the positive sequence.
There are various causes of an unbalanced sequence :
1.) when there are open phases.
2.) When there are unbalanced faults.
3.) When there are unbalanced loads in the system.
The effect of negative sequence is :
Negative sequence components induce double frequency currents in the system.
This doubly induced high frequency currents will rise the temperature of the system to very high temperatures.
This causes damages to the machine if it operates continuously.
There exists an unbalance in voltage and current components both in magnitude and phase value.
The negative sequence will have the same magnitude as the positive sequence but rotation occurs in the opposite direction of the positive sequence.
There are various causes of an unbalanced sequence :
1.) when there are open phases.
2.) When there are unbalanced faults.
3.) When there are unbalanced loads in the system.
The effect of negative sequence is :
Negative sequence components induce double frequency currents in the system.
This doubly induced high frequency currents will rise the temperature of the system to very high temperatures.
This causes damages to the machine if it operates continuously.
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