ABSTRACT

Dry-type transformers are one of the most significant devices used in the conversion, transmission and management process of the electricity. In practice, the electrical energy conversion entails energy losses such as heat, electromechanical and electromagnetic losses during the transformation. Hence, primary importance is the efficiency of energy conversion for a device that converts AC voltage from one value to another with the same frequency. Therefore, this study offers the best 3-phase dry-type transformer modelling interested in cost and efficiency related to transformer losses and useful energy conversion. Transformer manufacturing industries will produce a low cost and more efficient dry-type transformer by using electromagnetic/thermal analyzing and multi-optimization methods. Firstly, a 250 VA 380/110 V 3-phase cast resin core type transformer is modelled by an electromagnetic field simulator software programme called as ANSYS/Maxwell so the transformer is analyzed in detail in terms of the thermal and electromagnetic. In addition, the cost and efficiency values are optimized based on the current density (s) and C coefficient parameters by the multi-optimization method. Secondly, the transformer model is analyzed as thermal and electromagnetic at the end of the simulation results. Finally, the transformer is tested experimentally so the test results are confirmed by the simulation results considering the measurements. It is hoped that this study will contribute to transformer designers and operators interested in the conversion, transmission and management of the electrical energy.

摘要

干式变压器是电力转换、传输和管理过程中使用的最重要的设备之一。实际上，电能转换在转换过程中会产生能量损失，例如热、机电和电磁损失。因此，对于将交流电压从一个值转换为具有相同频率的另一个值的设备而言，最重要的是能量转换效率。因此，本研究提供了对与变压器损耗和有用能量转换相关的成本和效率感兴趣的最佳三相干式变压器建模。变压器制造行业将通过电磁/热分析和多重优化方法生产成本更低、效率更高的干式变压器。首先，一个 250 VA 380/110 V 三相浇注树脂芯型变压器由称为 ANSYS/Maxwell 的电磁场模拟器软件程序建模，因此从热和电磁方面对变压器进行了详细分析。此外，成本和效率值根据电流密度（s ) 和C系数参数通过多重优化方法。其次，在仿真结果的最后，变压器模型被分析为热和电磁。最后，变压器进行了实验测试，因此测试结果通过考虑测量的模拟结果得到证实。希望这项研究能为对电能转换、传输和管理感兴趣的变压器设计人员和运营商提供帮助。