8. "Hydrogen Fuelcell Engine Air Compressor Ultra Highspeed Electric Drive System Control," 2023-2024, PI. 

7. "PFI-RP: High-Reliability, Low-Cost, Rare-Earth-Free Motor for Electrified Transportation Applications," National Science Foundation (# 2234271), 2023-2026, PI. 

6. "Degradation Aware Self healing Control of Power Electronics Systems," National Science Foundation (# 2210106), 2022-2025, PI. 

5. "Design of miniaturized AC/DC converter," 2022-2024, PI

4. "Common Mode Electro-Magnetic Interference in More Electric Aircraft with Distribution Propulsion," Airforce Research Lab-MLRCP and Ohio State University, 2022-2024, PI.

3. "Training Future Navy Workforce II," Office of Naval Research, 2022-2027, MSU PI.

2. "Condition Monitoring of Inverter for Urban Hydrogen Mobility Diffusion Infrastructure," Korea Government Agency and Korea Tech University," 2022-2024, PI.

1. "ESRDC: EMI modeling of Medium Voltage  Wide Bandgap Power Electronics Systems: Network-Solution: (i) Network-Solution and (ii) Aging solution," Office of Naval Research, 2021~2025, MSU PI. 

14. "(Collaborative) Distributed Electro-Mechanical Transmitters for Adaptive and Power Efficient Wireless Communication in RF Denied Environment," National Science Foundation (Award # 1905434), 2019~2023, PI. 

13. "Undergraduate Opportunity for Navy Related Research", S. Choi (MSU PI), 2019~2023.          

12. "Department of Energy, EcoCar Mobility Challenge", S. Choi (Co-PI), 2018~2022. 

11."ESRDC: EMI modeling of Medium Voltage  Wide Bandgap Power Electronics Systems - Device Solution", Office of Naval Research, 2019-2022, MSU-PI.     

10. "Faculty Fellowship on Development of an Innovative and Compact Venture Education Module", VentureWell Foundation, 2018, PI. 

9. “Reliability of Wide Band Gap (WB) Power Electronics System,” Firestone Research Initiative Fellowship, 2017~2018, PI. 

8. "Hybrid/Turbo Electric Aircraft", Ohio Federal Research Network through the Ohio State University Research Foundation, 2016 ~ 2018, UA PI.

7. "Control Architecture for Intelligent Aviation Electric Power", Ohio Federal Research Network through the Ohio State University Research Foundation, 2016 ~ 2018, UA PI. 

6. Wireless power transfer system development, 2016-2018. 

5. "NSF I-Corps Team Award: High reliability and low-cost design of an electric motor for automotive industry applications", National Science Foundation, 2015 ~ 2016, PI. 

4. "Rare-earth-material-free, multiphase electric machine for low power applications", Ohio Third Frontier Technology Validation Fund (Ohio-TVSF), 2014 ~ 2016, PI. 

3. "Course and program development grant, Design of hybrid electric vehicle", National Collegiate Inventors and Innovators Alliance (NCIIA), 2014 ~ 2016, PI. 

2. "EMotorUS: High-resolution low-cost software of an on-board diagnosis system for future electric/hybrid vehicles", Venturewell Foundation, E-Team Program, Stage 1 and 2, 2014~2017, PI. 

1. “Fault diagnosis of linear synchronous motor inverter system for high-speed railroad train systems,” 2015 and “Experimental analysis and circuit model for fault diagnosis and lifetime estimation for power electronics devices,” Korea Railroad Research Institute, 2016, PI.