Enhanced Z-source inverter-based voltage frequency generator to conduct induced over voltage test on power transformers
Geno Peter, Anli Sherine, Samat Iderus
Abstract
Transformer is said to be the heart of an electrical power system. Testing of transformer is required, as it is an indication of the extent to which a transformer is able to comply with the customer's specified requirements and the respective standards. Before the development of power electronic devices, motor generator set was used to generate the required voltage and frequency to conduct the induced over voltage test on power transformers. In this paper, induced over voltage testing on power transformers using enhanced Z-source inverter is discussed. First, the power transformer was fed with the required voltage and frequency using a conventional Z-source inverter, and then with an enhanced Z-source inverter using MATLAB platform and the performance is analysed. Field testing was done with an enhanced Z-source inverter circuit on a power transformer based on the simulation results.