Grid-Following (GFL) & Grid-Forming (GFM) inverter control: Inverter control stability, Islanding mode control & detection, SCR estimation, 3P positive-negative control, seamless control, etc.

 o Solid-State-Transformer (SST, 반도체 변압기)

• Cascaded AC/DC converter control

• Bidirectional DC/DC converter design & control

 o Modular Multilevel Converters (MMC, 모듈러멀티레벨컨버터)

• MMC topology design & control

 o Bidirectional DC/DC converter design & control

• DAB&TAB&QAB converter design 

• High efficient converter control algorithm

 o Multiple active-bridge converter control

 o High efficiency and high power density HFTR design

• Parameter optimizations

• Loss minimization & high insulation capability

 o High efficiency integrated transformer design

• Utilizing leakage inductance in HFTR

 o PCB coil based Inductor & Transformer Design

 o EV OBC design & Control

• Power Factor Correction (PFC) Control (Bridgeless & Totempole Bridgeless PFC, etc.

• Resonant LLC & CLLC converter design & control

• Phase-Shift Full Bridge (PSFB) converter design & control

 o High efficiency & High power density DC/DC Converters

• ZVZCS resonant converter design & control