Progress on PEP-II magnet power conversion system

Conference · Tue Jun 04 04:00:00 EDT 1996

OSTI ID:505667

Bellomo, P; Genova, L ^[1]; Jackson, T ^[2]; Shimer, D ^[3]

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1. Stanford Linear Accelerator Center, Menlo Park, CA (United States)
2. Lawrence Berkeley National Lab., CA (United States)
3. Lawrence Livermore National Lab., CA (United States)

The various power systems for supplying the PEP-II DC magnets rely exclusively on switchmode conversion, utilizing a variety of means depending on the requirements. All of the larger power supplies, ranging from 10 to 200 kW, are powered from DC sources utilizing rectified 480 V AC. Choppers can be used for the series connected strings, but for smaller groups and individual magnets, inverters driving high-frequency transformers with rectifiers comprise the best approach. All of the various systems use a ``building block`` approach of multiple standard-size units connected in series or parallel to most cost-effectively deal with a great range of voltage and current requirements. Utilization of existing infrastructure from PEP-I has been a cost-effective determinant. Equipment is being purchased either off-the-shelf, through performance specification, or by hardware purchase based on design-through-prototype. The corrector magnet power system, utilizing inexpensive, off-the-shelf, four-quadrant switching motor-controllers, has already proven very reliable: 120 of the total of 900 units have been running on the injection system for four months with no failures.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098; AC03-76SF00515; W-7405-ENG-48
• OSTI ID: 505667
• Report Number(s): UCRL-JC--126951; CONF-960621--41; ON: DE97053188
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
MAGNETS
PEP STORAGE RINGS
POWER SUPPLIES