Design and performance of PEP dc-power systems
The PEP Magnet Power Supply System represents a significant departure from previous technology with the goal of improved performance at lower cost. In nineteen of the magnet families around the ring, Chopper power supplies are used. The many choppers are powered from two 2 MW dc supplies, and control the average power to the various magnet loads by pulse-width modulation at a 2 kilohertz repetition rate. Each chopper utilizes SCR's for switching, and stores sufficient capacitive energy for turn-off on command. Most of the energy is recirculated, resulting in high-efficiency. The two kilohertz chopping rate allows a one kilohertz unity-gain bandwidth in the current-regulator loop, and this wide bandwidth, coupled with low drift components in the error-detection system, provides a high-performance system. The PEP system has also shown that the chopper system is economical compared to standard multi-pulse controlled-rectifier.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6570305
- Report Number(s):
- LBL-12476; CONF-810314-136; TRN: 81-009475
- Resource Relation:
- Conference: Particle accelerator conference, Washington, DC, USA, 11 Mar 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PEP STORAGE RINGS
POWER SUPPLIES
CONTROL SYSTEMS
DC SYSTEMS
EFFICIENCY
MAGNET COILS
SPECIFICATIONS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
POWER SYSTEMS
STORAGE RINGS
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