Accurate copper loss analysis of a multi-winding high-frequency transformer for a magnetically-coupled residential micro-grid

Publication Type:
Conference Proceeding
2017 20th International Conference on Electrical Machines and Systems, ICEMS 2017, 2017
Issue Date:
Full metadata record
© 2017 IEEE. Improvements in characteristics of magnetic materials and switching devices have provided the feasibility of replacing the electrical buses with high frequency magnetic links in micro-grids. This effectively reduces the number of voltage conversion stages, and the size and cost of the renewable energy system. It also isolates the converter ports, which increases the system safety and facilitates bidirectional power flow and energy management. To design the magnetic link optimally, an accurate evaluation of copper loss of the windings considering both current waveforms and parasitic effects is required. This paper studies the accurate copper loss analysis of a three-winding high-frequency magnetic link for residential micro-grid applications. Due to the non-sinusoidal nature of the voltage and currents, the loss analysis is carried out on a harmonic basis taking into account variations of phase shift, duty ratio and amplitude of waveforms. The high frequency skin and proximity effects have are taken into account. The maximum and minimum copper loss operating points of the converter and their dependency on the phase shift and duty ratio of the waveforms are studied and simulation results are presented.
Please use this identifier to cite or link to this item: