Research & Projects

0. Research Areas

  • Power electronics (2001-present)

Novel power converter topologies and advanced modulation and control methodologies to address some of the fundamental power electronics challenges, e.g. power quality, efficiency, cost, reliability and availability, modularity and fault-tolerability, and compactness.

  • Grid integrations of inverter-based resources (2001-present)

Application-specific control and optimization methods for system-wide benefits utilizing smart inverters and distributed control and optimization techniques.

  • Power system computation (2015-present)

One of the motivations is to address the challenges associated with the deregulated power market, more and more distributed generations, and the increasing penetration of renewable energy. New operation paradigm, optimization and shorter time duration control are expected in next generation power grid.

  • Railway electrification (1991-2000)

Electrification is vital to high-speed railways. The first decade of my career was devoted to China's high-speed electric railway research, development and engineering design, which has led several China's key railway engineering including the first de-facto China's high-speed railway - Qinhuangdao to Shenyang Passenger Railway. The main research efforts were addressing: a) New methods to reduce the effects of single-phase TPS to utility, including negative-sequence current, reactive power, and harmonics; b) Three-phase to two-phase balancing transformation; c) Economic and optimal TPS planning and design while meeting high-speed trains' power and voltage requirements; d) Overhead catenary system design to meet the elasticity requirements for continuous current feeding and minimum arc as well as pantograph lifetime; e) Integrated traction substation automation and microprocessor-based protections; f) Expert/CAD design system; and g) EMI and stray current protection.

1. Current Research Projects

  • DOE OE-AGM Project - Resilient All Power Electronics Grid Modeling and Operation
  • DOE GMLC 2.5.2 Project - Energy Services Interface
  • DOE GMLC 2.2.1 Project - Citadels
  • DOE GMLC 2.1.1 Project - FAST DERMS
  • DOE GMLC 1.2.1 Project - Grid Architecture
  • DOE Project DE-FOA-2092-117 - Communication-Constrained Robust Control and Learning of Grid-Connected IoT
  • DOE Project DE-FOA-1740-1576 - Modular HF Isolated Medium Voltage String Inverters Enable a New Paradigm for Large PV Farms
  • DOE NAERM Project - North American Energy Resilience Model

2. Past or Completed Research Projects

  • DOE GMLC 1.4.1 Project - Standards and Test Procedures for Interconnection and Interoperability
  • DOE GMLC 1.4.2 Project - Definitions, Standards and Test Procedures for Grid Services from Devices
  • DOE GMLC 1.4.17 Project - Extreme Event Modeling
  • DOE GMLC 1.3.33 Project - Interconnections Seam Study
  • DOE GMLC 1.5.4 Project - Integration of Responsive Residential Loads into Distribution Management Systems
  • DOE SuNLaMP Project (DE-EE00031081) - Dynamic Building Load Control to Facilitate High Penetration of Solar Photovoltaic Generation
  • ORNL LDRD Project (LOIS 8921) - Switched Mode Controls for Guaranteeing Resilient Operation of the Smart Grid
  • ORNL LDRD Project (LOIS 7803) - An Open Framework for Joint Optimization/Control of Networked Microgrids
  • DOE EERE BTO Project (L048-1642) - Hierarchal Model-Free Transactive Control of Building Loads to Support Grid Services

3. Research Projects Completed at Siemens Corporate Research

  • Next-Generation Plus Plus (NG++) Solar PV Inverters
  • SINVERT PVS 350UL, 700UL, 1050UL, 1400UL
  • SINVERT PVS 500UL, 1000UL, 1500UL, 2000UL
  • SINVERT PVS 800UL, 1600UL, 2400UL, 3200UL

4. Research Projects Completed at University of New Brunswick

  • Single-Phase Single-Stage Buck-Boost Inverter
  • Dispatched Distributed Generation Network

5. Research Projects Completed at TSDI-MOR

  • Traction Power Systems of Qinhuangdao-Shenyang High-Speed Passenger Railway Lines
  • (more)
Updated on 2020-04-09.