Abstract
The paper describes in detail the 3-phase self-limiting transformer with magnetic flux applied and contains measured results. The solution includes two independent iron cores. I applied two pieces of iron cores with 3 limbs on each. One of the iron cores contains the 3 primary coils on the limbs respectively and the other iron core also contains 3 secondary coils. As I use two iron cores the loss, the size, the weight and the cost are higher compared to the conventional transformers but this solution has several advantages. For example, the fault power is less, switching is fast. In the case, when there is no load on the secondary side and primary voltage increases, the arrangement is able to break coupling between the primary and secondary sides. The work has been carried out by me as a novel possibility of application of the principle of magnetic flux constancy in the closed loop.
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