• A novel low-leakage pulse transformer (PT) for a magnetically coupled Gate Drive Circuit (GDC) to drive multiple isolated devices is proposed. 

• The leakage- and self-inductances of the proposed transformer are computed using Finite Element Method (FEM) simulations and validated. 

• The performance of the GDC with the proposed PT is verified by driving parallel connected SiC MOSFETs for a high-speed offline induction cap sealing controller.

This work is presented at IEEE PEDES 2024 at NITK Surathkal and it has received a best paper award.

• A nonlinear permanent magnet model to formulate anisotropic behaviour is derived

• The model can simulate demagnetization, remagnetization and magnetization in the opposite direction. 

• The model of nonlinear permanent magnets can help to improve the design of electrical machines by protecting permanent magnets from demagnetisation. 

Publication

• A setup to measure core losses under rotational magnetization with harmonics is developed 

• A peculiar behavior of interleaving of hysteresis loops under rotational magnetization is observed

Publication

• Core losses and hysteresis loops for arbitrary magnetization conditions can be measured

• Possible measurement frequency range is 35–500 Hz

• A provision is also made to predict three components of dynamic hysteresis losses

Publication

• A comprehensive approach to accurately calculate the inductance offered by an IPM for a charging operation is presented

• The core and copper losses for charging and motoring operations are compared 

• The sensitivity of inductance offered by the machine with respect to the design parameters is also analysed.

Publication

• An inductor circuit element is proposed using the JA model in an open-source circuit simulator

• Core losses and magnetic characteristics considering the effect of harmonics and frequency are modelled

• This can be used to model the topological-based equivalent circuit of magnetic components

Publication