| With the rapid increaments of capacity of power system, the level of potential short circuit fault current in the system raises accordingly. The exceeding fault current can destroy power systems and equipments. In recent years, superconducting fault current limiters(SFCLs) well developed are recognized to be the ideal device for limiting fault currents.As the power electronic technology develops rapidly, power electronic SFCLs especially bridge type SFCLs have been studied as the hot topic of SFCLs. Based on the summary of development status of SFCLs and analysis of operation principle and relative merits of various kinds of bridge type SFCLs, a new bridge type SFCL(full controlled hybrid bridge type SFCL) is proposed in this paper. This SFCL overcomes the problems existed in other types, for example, basic bridge type can not limit the steady fault current, bridge type based on SCRs has a long acting time the most up to 10 ms, and bridge type with dual-windings has a high cost and large volume.The main contents for this article are as follows: 1) The modes, development status of SFCLs and related technologies of bridge type SFCL are briefly introduced. 2) Compared to others SFCL, the superiority of full controlled bridge type SFCL is analyzd. Then, the explanation of operation principle, theoretical analysis, simulation modeling, and analysis of characteristics are presented. 3) Simple application about the SFCL is studied. A low voltage AC superconducting power supply system for cusumer side with this SFCL is designed. And, the design thought and the characteristics of the system and SFCL are researched. 4) Finally, experimental verification model of full controlled bridge type FCL is developed. The designs for hardware and software of the FCL device have been presented. Through the comparison between experimental results of experimental system and simulation results of simulation model, the feasibility of this proposed SFCL is confirmed. |
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