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1. Background


Development of a networked energy system (NES) that consists of multiple energy storage and generation devices provides a promising solution to improve the performance and reliability of the overall energy system. As no energy storage device alone presents ideal characteristics in terms of energy density, power density, and cycle life, multiple heterogeneous energy devices can be hybridized within a NES to meet the load requirements and take advantage of their complementary features. Meanwhile, the system configuration and behavior of the NES become more complex. This makes the energy management of a NES a challenging task. The interactions with different load dynamics, such as in EV or microgrid applications, further increase the control complexity of the system.

It is interesting to note that such a complicated energy system is actually a new type of "network", in which devices distribute and exchange both information and power along links/connections. For the management of the NESs, new approaches are required that can fully take advantage of the characteristics of each individual device and the interactive relationships among them, and thus improve the performance of the systems considering trade-offs among efficiency, dynamic response, reliability, flexibility, scalability, etc.

2. Interests (please refer to our publications for details)


  • Battery management systems: hardware, estmation and control algorithms
  • Quantitative analysis, modeling, and control of hybrid energy systems
  • Decentralized autonomous power distribution in networked energy systems
  • Applications in electric vehicle, microgird, smartgrid, etc.

3. Platforms


  • Battery-ultracapacitor hybrid energy system (Fig. 1)
  • DC-DC converter designed and fabricated in house (Fig. 2)
  • Environment chamber (Fig. 3)

Fig. 1. Experimental setup of battery-ultracapacitor hybrid energy system

 

Fig. 2. DC-DC converter (designed and fabricated in house)

 

Fig. 3. Environment chamber