Short circuit force analysis on transformer winding by different copper strand size using finite element software

Ismail, Khairul Shahfiq (2021) Short circuit force analysis on transformer winding by different copper strand size using finite element software. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

Transformer is a passive component that transfer electrical energy from one circuit to another circuit or multiple circuit. A different current in any transformer spin produces a different magnetic flow in the core of the transformer that induces a differing power in any other spinning spinal cord around the very core. Without metallic (conductive) link between the two circuits, electrical energy can be transmitted among independent coils. In 1831 Faraday's laws of induction describe the induced voltage effect in any spindle caused by a change in magnetic flux surrounded by the spindle. Transformers are most typically utilised in power applications for increased low AC voltages (a step-up transformer) or for lowering high AC voltages, or for coupling signal processing cycles (a step-down transformer). The purpose of this research is to study the short-circuit force on transformer winding by different copper strand size and tensile strength using Ansoft Maxwell. Short circuit occurrences in transformer windings cause high current circumstances. In turn, these currents cause excessive pressures in a transformer. In the design, manufacture and operation of transformers, electromagnetic forces are key factors. The forces can be separated into axial and radial forces with individual concerns and mitigations. Therefore, the study will be done to know the ability of a power transformer to withstand the short circuit force. In this study there will be few simulations on design and arrangement of transformer winding by using Ansoft Maxwell software. Besides that, the calculation of different size and axial spacer of copper strands also will be done to get the specific number copper strand needed. From this, the expected result is to get the model of the transformer winding and short circuit force based on the simulation and the number of copper strands of different size and axial spacer from the calculation.

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