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17 results on '"Li, Fulong"'

10. A Dual-Window DC Bus Interacting Method for DC Microgrids Hierarchical Control Scheme.

Author

Li, Fulong, Lin, Zhengyu, Qian, Zhongnan, Wu, Jiande, and Jiang, Wei

Abstract

Hierarchical control schemes have been commonly employed in dc microgrid controls, which combine local control, dc bus voltage coordination, and communication links to guarantee smart operation of dc microgrids. Conventional dc bus voltage regulation cannot conduct signal exchange. Therefore, external communication links are usually needed for hierarchical control schemes. However, once the communication link fails, the hierarchical control system will lose its ability to coordinate the distributed power smartly. This paper proposed a dual-window dc bus interacting (DBI) method to exchange information between the distributed energy sources, for the situations where communication link fails or is not available. A small-scale dc microgrid experimental system was set up, and a simple master-slave control scheme was implemented without communication link to demonstrate the feasibility of the proposed DBI method for dc microgrid controls. The expandability and immunity of the proposed DBI method were also evaluated. [ABSTRACT FROM AUTHOR]

Published
2020
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13. Active DC bus signaling control method for coordinating multiple energy storage devices in DC microgrid

Author

Li, Fulong, Lin, Zhengyu, Qian, Zhongnan, Wu, Jiande, Li, Fulong, Lin, Zhengyu, Qian, Zhongnan, and Wu, Jiande

Abstract

Management of multiple energy storage devices in a DC microgrid is a challenge. Conventional method, such as droop control, cannot ensure accurate current sharing in coordinating multiple battery banks, which limits the DC microgrid system performance. This paper proposed an active DC bus signaling (ADBS) method to coordinate multiple battery banks in a DC microgrid. It has the advantages of accurate current sharing. Using the proposed ADBS method, the master controller can collect State of charge (SoC) of each slave battery bank by actively varying the DC bus voltage levels and monitoring the current change. The master module then sets a working voltage level after decision-making. The proposed method was experimentally evaluated, and the experimental results show that all the possible working voltage levels can be reached and the accuracy of current sharing is guaranteed.

Published
2017

16. A system solution of small scale construction machinery for forest region in Frigid Zone

Author

Li Fulong and Han Tan

Subjects
Form factor (design), Engineering, business.industry, Working capacity, business, Scale construction, Civil engineering, Requirements analysis
Abstract

The special working requirements are presented because of the especial geographical conditions of forest region in Frigid Zone, which include mainly such as form factor, off-road capability and working capacity, and show the different technology performance and functionality requirement with the existing construction machinery. Based on requirement analysis of construction machinery working for forest in Frigid Zone and forest region, this paper researches small and multifunctional construction machinery system solution, and analyzes and discusses its key technologies, in order to meet requirement of both general engineering construction in the environment and disaster rescue.

Published
2012
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