Currently, my research focuses on:
a) Design of GaN-based highly efficient isolated and grid-connected singe and three phase solar micro-inverters.
b) Design and development of hardware and software protection schemes for grid-connected solar micro-inverters.
c) Modeling and control of power electronic systems.
d) Model predictive control theory and its real time applications in SiC and GaN-based power-electronic systems and networks.
e) Design of active gate drivers for SiC based WBG power electronic systems.
Some of the journal publications authored along these lines and ongoing work are shown :
IEEE Transactions on Power Electronics
About the paper: Differential-mode Ćuk topology provides a non-linear input output gain, and hence an adaptive Lyapunov based non-linear control law has been designed to stabilize the converter.
IEEE Transactions on Power Electronics
About the paper: Using optimal control theory and stability bounded switching sequences, challenging naval pulsating loads are stabilized and DSP computation time reduced.
IEEE Transactions on Power Electronics
About the paper: Using the EMI peaks of a PES as constraints in the switching sequence based control scheme, the control mitigates EMI autonomously and reduces common-mode and differential-mode EMI filter size.
About the work: An active gate drive-based switching transition control (STC) scheme for a Cree SiC high-power module. Based on an efficiency target, the STC network modifies the turn-on/turn-off times of the SiC device to achieve the target. The STC network is based on switched resistor methodology, where GaN-FET based switches S1 and S3 operate at over 20 MHz to control the transitions of the main SiC device.