Experience of 12 kA / 16 V SMPS during the HTS Current Leads Test

10th Asia Plasma and Fusion Association Conference

Panchal, P.^1 ; Christian, D.^1 ; Panchal, R.^1 ; Sonara, D.^1 ; Purwar, G.^1 ; Garg, A.^1 ; Nimavat, H.^1 ; Singh, G.^1 ; Patel, J.^1 ; Tanna, V.^1 ; Pradhan, S.^1

Institute for Plasma Research, Near Indira Bridge, Bhat, Gandhinagar

382 428, India^1

关键词: High temperature superconductor (HTS);    Hts current leads;    Hybrid currents;    Low ripple voltage;    Manufacturing procedure;    N+1 redundancies;    Salient features;    Series production;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/823/1/012006/pdf
DOI  :  10.1088/1742-6596/823/1/012006

来源: IOP

【 摘 要 】

As a part of up gradation plans in SST-1 Tokamak, one pair of 3.3 kA rated prototype hybrid current leads were developed using Di-BSCCO as High Temperature Superconductors (HTS) and the copper heat exchanger. In order to validate the manufacturing procedure prior to go for series production of such current leads, it was recommended to test these current leads using dedicated and very reliable DC switch mode power supply (SMPS). As part of test facility, 12 kA, 16 VDC programmable SMPS was successfully installed, commissioned and tested. This power supply has special features such as modularity, N+1 redundancy, very low ripple voltage, precise current measurements with Direct Current Current Transformer, CC/CV modes with auto-crossover and auto-sequence programming. As a part of acceptance of this converter, A 5.8 mΩ water-cooled resistive dummy load and PLC based SCADA system is designed, developed for commissioning of power supply. The same power supply was used for the testing of the prototype HTS current leads. The paper describes the salient features and experience of state-of-art of power supply and results obtained from this converter during the HTS current leads test.