Nitish Jolly

Electrical engineering

Hometown: Panchkula, Haryana, India

Graduation date: Spring 2023

Energy icon, disabled. An orange lightning bolt.

MORE | Spring 2022

Multi-Constraint Optimization and Co-Design of a 2-MHz All-GaN based 1kW 96% Efficient LLC Converter

With the objective of minimizing the power losses in a 2 MHz LLC resonant converter, a novel multi-variable multi-constraint design optimization algorithm is developed and analyzed in this manuscript. Intricately curated constraints and corresponding design-based trade-offs are explained for a complete co-design of a multi-MHz resonant converter that result in an efficiency enhancement of 3.46%, compared to relevant state-of-the-art. In addition, the paper focuses on accurate characterization and parametric minimization of the AC resistance by optimal selection of transformer winding configuration, while achieving a controllable leakage flux for the resonant inductor integration into the high frequency planar transformer (HFPT) thereby reducing the effective winding losses by 6%. Further, the proposed optimization algorithm is experimentally verified by developing an all-GaN based LLC converter rated at 1kW, designed at 2 MHz resonant frequency. While achieving a power density of 6.2 W/cm3, the efficiency at 20% load is experimentally reported to be 92%, while the peak efficiency is estimated to be 96.08%.


View the poster
QR code for the current page

It’s hip to be square.

Students presenting projects at the symposium are encouraged to download this personal QR code and include it within your poster. This allows symposium attendees to explore more about your project and about you in the future. 

Right click the image to save it to your computer.