Research Areas

 

Residential-Scale Microgrid

Research Activities:

· Disaster relief

· Household and community resiliency enhancement

· Microgrid design with 12 kW solar panels, 3 kW wind turbine, and SYNDEM converters

· Back to back grid converter for system-backup

 

 

Sample Publication:


Q.-C. Zhong, Y. Wang, and B. Ren. Connecting the Home Grid to the Public Grid: Field Demonstration of Virtual Synchronous Machines. IEEE Power Electronics Magazine, vol. 6, no. 4, pp. 41 – 49, 2019.


Microgrid Control

Research Activities:

· Autonomous operation in grid-connected or islanded mode

· Load sharing among parallel operation of inverters

· Stable operation and disturbance rejection

· Regulation of voltage and frequency

· Lab-scale microgrid platform with 8 nodes, including wind, solar, battery, generator, utility grid interface, and flexiable loads

 

 

 

 

 

Sample Publication:

 

Y. Wang, B. Ren, and Q.-C. Zhong. Robust Power Flow Control of Grid-Connected Inverters. IEEE Transactions on Industrial Electronics, vol. 63, no. 11, pp. 6887-6897. 2016.


Wind Energy & Grid Integration

Research Activities:

· Generator control in wind turbine

· Power flow control in weak grid

· Wind farm optimization with wake effects

· Integration of renewables with utility grid

 

 

 

 

 

Sample Publication:


B. Ren, Y. Wang, and Q.-C. Zhong. UDE-based Control of Variable-speed Wind Turbine Systems. International Journal of Control. vol. 90, no. 1, pp. 137-152. 2017.


Solar Energy & Grid Integration

Research Activities:

· Smart PV inverter technology

· Applications of PV + energy storage

 

 

 

 

 

 

 

Sample Publication:

 

Y. Wang, and B. Ren. Fault Ride-Through Enhancement for Grid-tied PV Systems with Robust Control. IEEE Transactions on Industrial Electronics, vol. 65, no. 3, pp. 2302-2312. 2018.


Unmanned Aerial Vehicles (UAVs)

Research Activities:

· Robust control/Geometric control

· Critical infrastructure health monitoring (e.g., wind turbine, oil/gas pipeline)

· Control of micro-UAVs in vortex flow

· Autonomous shipboard landing and take-off

· Solar powered UAVs

· Wireless charging system for UAVs

 

 

 

Sample Publication:

 

B. Ren, S. S. Ge, C. Chen, C.-H. Fua and T. H. Lee. Modeling, Control and Coordination of Helicopter Systems. Springer, 2012.


MEMS

Research Activities:

· Precise motion control in piezoelectric stage with hysteresis compensation

· Hysteresis modeling and continuous control of functional oxide films (VO2)

 

 

 

 

 

 

 

 

 

 

 

 

 

Sample Publication:

 

B. Ren, J. Dai, and Q.-C. Zhong. UDE-based Robust Output Feedback Control with Applications to a Piezoelectric Stage. IEEE Transactions on Industrial Electronics, vol. 67, no. 9, pp. 7819 – 7828, 2020.


Marine / Offshore Systems

Research Activities:

· Station keeping and vibration control of mooring systems

· Offshore wind energy harvesting

 

 

 

 

 

 

 

 

 

 

 

 

 


Manufacturing

Research Activities:

· Laser pulse shaping and optimization

· Stage positioning control in motion systems

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sample Publication:


B. Ren, P. Frihauf, R. J. Rafac, and M. Krstic. Laser pulse shaping via extremum seeking. Control Engineering Practice. vol. 20, no. 7, pp. 674-683. 2012.


Control Theory

 

· Robust Control

· Adaptive Control

· Neural Networks

· Boundary Control of Systems Modeled by PDEs

· Real-time Optimization with Extremum Seeking

 

 

Sample Publications:


- Y. Wang, B. Ren, and Q.-C. Zhong. Bounded UDE-based Controller for Input Constrained Systems with Uncertainties and Disturbances. IEEE Transactions on Industrial Electronics, 2020. DOI: 11.1109/TIE.2020.2969069.

- B. Ren, J. Dai, and Q.-C. Zhong. UDE-based Robust Output Feedback Control with Applications to a Piezoelectric Stage. IEEE Transactions on Industrial Electronics, vol. 67, no. 9, pp. 7819 – 7828, 2020.

- J. Dai, and B. Ren. UDE-based Robust Boundary Control for an Unstable Parabolic PDE with Unknown Input Disturbance. Automatica, vol. 50, no. 1, pp. 11403-11408. 2018.

- B. Ren, Q.-C. Zhong, and J. Dai. Asymptotic Reference Tracking and Disturbance Rejection of UDE-Based Robust Control. IEEE Transactions on Industrial Electronics, vol. 64, no. 4, pp. 3166-3176. 2017.

- B. Ren, Q.-C. Zhong, and J. Chen. Robust Control for a Class of Non-affine Nonlinear Systems Based on the Uncertainty and Disturbance Estimator. IEEE Transactions on Industrial Electronics. vol. 62, no. 9, pp. 5881–5888. 2015.

- B. Ren, S. S. Ge, K. P. Tee, and T. H. Lee. Adaptive Neural Control for Output Feedback Nonlinear Systems Using a Barrier Lyapunov Function. IEEE Transactions on Neural Networks. vol. 21, no.8, pp. 1339-1345. 2010.


 

 

 

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