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vinayjain
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Why there is a phase shift of 30 degree (positive or negative) if we convert our winding from star to delta or vice versa?
Star Delta conversion is a method used in electrical engineering to convert a three-phase AC power source into a two-phase AC power source. It involves rearranging the connections of the three-phase system in order to obtain a two-phase output.
Phase shift is necessary in Star Delta conversion because it allows for the two-phase output to have the same voltage and power as the original three-phase system. This is achieved by shifting the phases of the voltage and current by 30 degrees.
The phase shift in Star Delta conversion does not change the total power output of the system. However, it does change the distribution of power between the two phases. The phase with the higher voltage will have a higher power output compared to the other phase.
One potential drawback of using Star Delta conversion is that it requires additional equipment, such as transformers and switches, which can increase the cost and complexity of the system. Additionally, the phase shift can cause imbalances in the system, leading to uneven power distribution.
No, Star Delta conversion can only be used in systems where the load is balanced and the phases are equally spaced. If the load is unbalanced or the phases are not equally spaced, a different method, such as delta-star conversion, would be more suitable.