RD ERL Power Supplies Bob Lambiase February 17
R&D ERL Power Supplies Bob Lambiase February 17 -18, 2010
R&D ERL Magnet Power Supply Overview All of the magnet power supply requirements for ERL can be satisfied by five different models. The capsule specifications and quantities are shown in the table below. Model Voltage, Volts Current, Amps Precision, ppm Quantity UD 320 A 35 V, IE Power 35 320 100 1 Shim Amplifier 892, Danfysik 15 10 100 34 BOP 50 -20 GL, Kepco 50 20 100 5 MCOR 12 / 2 A, Bi. Ra 25 2 1000 32 MCOR 12 / 6 A, Bi. Ra 25 6 1000 6 With the exception of the UD 320 A 35 V unit, all models are bipolar, even though not all loads require bipolar operation. But, by using standard off-the-shelf units, development costs were minimized. The total AC power requirements for all of these units are estimated at 13. 2 KVA of 480 VAC, 3 phase and 25. 3 KVA of 208 VAC, 3 phase. Bob Lambiase 2 February 17 -18, 2010
Main Dipole and Magnet String Supplies R&D ERL Main Dipole Power Supply • Powers all six main dipoles in series. • IE Power UD 320 A 35 V • Rated I = 320 Amps, Rated V = 35 Volts, • Precision = 100 ppm, Qty 1. Control is by standard BNL Power Supply Interface and Power Supply Controller (PSI /PSC) connected by fiber optic cables • Shown as left cabinet in photo. Magnet String Supplies • Powers series strings of solenoids or chicane • • dipoles. Kepco BOP 50 -20 GL Rated I = 20 Amps, Rated V = 50 Volts, Precision = 100 ppm, Qty 5. Control is digital via RS-232 All five units shown installed into right cabinet in photo. Bob Lambiase 3 February 17 -18, 2010
R&D ERL Shim Power Supplies • • • Powers all 23 main quadrupoles individually, as well as individual small dipoles and solenoids. Danfysik Shim Amplifier 892 Rated I = 10 Amps, Rated V = 15 Volts, Precision = 100 ppm, Qty 34. Six regulators packaged in each 19 inch rack, along with a common bulk supply. There are three racks per cabinet. The two cabinets with 36 regulators is shown in the photo on the right. Control is digital via RS-485 A single controller, shown below, is capable of manually controlling up to 256 regulators. Bob Lambiase 4 February 17 -18, 2010
Back Leg and Corrector Power Supplies R&D ERL Back Leg Power Supply • Powers the six main dipole back leg windings individually. These are used as horizontal correction elements. Bi. Ra MCOR 12 / 6 A Rated I = 6 Amps, Rated V = 25 Volts, Precision = 1000 ppm, Qty 6. Analog control via VME DAC / ADC All six units, in one rack, shown installed into right cabinet in photo. • • Corrector Power Supplies • Powers all corrector windings individually. • Bi. Ra MCOR 12 / 2 A • Rated I = 2 Amps, Rated V = 25 Volts, • • Precision = 1000 ppm, Qty 32. Analog control via VME DAC / ADC All 32 units, in two racks, shown installed into left cabinet in photo. Bob Lambiase 5 February 17 -18, 2010
R&D ERL Equipment Layout Three standard 30” deep cabinets house the Danfysik Shim PSs and the Kepco BOPs. One 30”cabinet is available as a spare. Two 23” racks are used for the Bi. Ra correctors and dipole back leg windings. They are located very close to the Power Supply Controls cabinet. Power Supply Controls are housed in a cabinet next to the vacuum system cabinets. Bob Lambiase 6 February 17 -18, 2010
Construction and Commissioning R&D ERL Construction Status All of the magnet power supplies have been delivered, and are nearly fully installed mechanically. Work will continue with installing cables for AC power to the equipment, DC cables from the equipment to the magnets, and control cables from the control system to the power supplies. This work should be completed by June 2010. Commissioning Plans All of the power supplies have been tested at the factory, and there are no technical complexities to commissioning these supplies. The control interface design will be tested prior to the actual magnet loads being connected and the final system testing will proceed as the magnet loads are connected. Bob Lambiase 7 February 17 -18, 2010
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