کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 5th International Conference on Electrical Machines and Drives

An Active Current Balancing Method for Multiphase LLC Resonant Converter

نویسندگان :

Seyedamirhossein Talebi¹ Kioumars Shahriari² Salar Sadeghian³ Reza Takarli⁴ Seyed Fariborz Zarei⁵

1- Department Electrical and Computer Engineering North Carolina State University North Carolina State, USA 2- Department of Advance Technologies Iran University of Science and Technology Tehran, Iran 3- Department of Electrical Engineering Iran University of Science and Technology Tehran, Iran 4- Department of Electrical Engineering Iran University of Science and Technology Tehran, Iran 5- Department of Electrical and Computer Engineering Qom University of Technology (QUT)

کلمات کلیدی :

LLC converter،Variable Inductor،Power-Balancing Method

چکیده :

Current sharing in power converter systems has become an effective solution for achieving high output current in modern power electronics. However, the output capability of the switching converter is limited by the voltage and current rating of semiconductor devices. For instance, MOSFETs are typically rated around 1 kV and 100 A, while insulated-gate bipolar transistors can handle up to 6.5 kV. Several approaches have been proposed to overcome these limitations. However, due to mismatches in semiconductor parameters and parasitic elements, achieving equal power distribution between modules remains difficult. This paper introduces a new technique for output current equalization in modular LLC converters. The proposed method balances the output current of N LLC modules by adjusting the transformer inductance without adding any extra components. The effectiveness of the proposed approach was verified through MATLAB simulations for N=3 LLC converter modules, delivering a total output current of 130 A.