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AIMS TF Upgrade Update

AIMS TF Upgrade Update. 6/18/14. Input Conn. Output Conn. Crowbar (Optional Item). High Current Switch. TF Magnet Load. Converter 1. Converter 2. Main Breaker. Main Transformer. Contactor. L/2. L/2. Volt. Div. V A R. R/2. R/2. A. Fused Machine Ground. B. C.

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AIMS TF Upgrade Update

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  1. AIMS TF Upgrade Update 6/18/14

  2. Input Conn. Output Conn. Crowbar (Optional Item) High Current Switch TF Magnet Load Converter 1 Converter 2 Main Breaker Main Transformer Contactor L/2 L/2 Volt. Div. V A R R/2 R/2 A Fused Machine Ground B C Neutral Shunt #2 Shunt #1 TF BUS GND Auto-Crowbar & Varistor Control & Status High Current Switch Interface Breaker & Contactor Control & Status 6 Pulse Dual Converter with Lockout Controls (and Shoot-through Protection) Main TF Supply With Unidirectional Auto-Crowbar Local Power Supply Control, Interlocks and Status Main TF Supply Control and Status Remote Monitor and Control Magnet Load + TF Bus L = 0.0069H R = 0.00167 Ohms SELLER Operator Interface BUYER OPTIONAL BID ITEM AIMS TF Power System Block Diagram

  3. AIMS TF Power Supply • Specification completed and reviewed. • Request for Proposal sent to 10 prospective bidders. • All 10 have received and are reviewing specifications. • One no bid has been received. • July 3 is the deadline for submitting proposals and quotations.

  4. AIMS TF Power Supply, contd. • Detailed design of Remote Monitor and Control Interface is underway. • Detailed design of High Current Switch Interface is underway. • Inventory of PLC equipment, AFOLs and DFOLs, Cross-connect blocks and other required equipment is underway. • Purchase of interface parts and equipment will begin soon.

  5. AIMS TF Power Supply Varistor Assembly • Quotation has been received from second more qualified vendor for 10 Units, 12 Units and 15 Units matched and tested. • Have received more details on design and should receive final information tomorrow. • 8 Weeks delivery ARO quoted. • Layout of mounting panel and buswork for varistor assembly have been discussed and work has started. • Shunts and isolation amplifiers for current measurement are being determined. • Cooling and interlock circuits being discussed. Detailed design needed.

  6. MetrosilVaristor Assembly1 of 10-15 in Parallel

  7. AIMS TF Power Supply Varistor Assembly, contd. • 10-15 Units of 6 paralleled discs will be used in parallel. (60 total discs) • Energy rating per disc repeated with cooling is 75kJ. • Approximately 5 hours between maximum discharge cooling time. • Current Rating is 250A/disc. • Each unit is tested for current sharing. • Load sharing measured • Thermal monitors on each disc in Unit verify sharing • Third party test results confirm good current sharing • Voltage clamped at 1500V with 15000A in load for 10 Units in parallel.

  8. AIMS TF Power Supply High Current Switch • A more detailed specification for the High Current Switch has been written. • Specification has been sent to two more vendors for quotations. • Original vendor unable to produce test results for voltage rating of switch so far. • Optical interlocks for positive indication of switch position are under discussion.

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