A novel topology for the bending magnets power supply at LNLS

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/23.173234· OSTI ID:6704829

Pomilio, J A ^[1]; Wisnivesky, D; Lira, A C ^[2]

---

1. DSCE/FEE/UNICAMP, Lab. Nacional de Luz Sincrotron, LNLS C.P. 6192, 13801, Campinas, SP (Brazil)
2. IFGW/UNICAMP, Lab. Nacional de Luz Sincrotron, LNLS C.P. 6192, 13801, Campinas, SP (Brazil)

The Synchrotron Radiation source under construction at the LNLS in Brazil is composed of 12 bending magnets and 3 quadrupole families. This paper reports on a new topology of high-performance dc current power supply developed to feed the magnets. The main goal is to get a high performance (mean current stability, tracking, repeatability and ripple better than 100 ppm), highly efficient and reliable system. To achieve these goals, a new power supply topology was developed based on a modular switched-mode power supply associated in series with a 6 pulse SCR bridge. To reduce possible high levels of electromagnetic interference, only a small fraction of the total load voltage is used to feed the SMPS; more than 90% of the power is delivered by the SCR bridge. Furthermore, the load current is shared among the SMPS modules, so that each one switches only a fraction of the total current.

• OSTI ID: 6704829
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 39:5; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BENDING MAGNETS
POWER SUPPLIES
BRAZILIAN LNLS
DC SYSTEMS
EFFICIENCY
ELECTRIC CURRENTS
ERRORS
LIGHT SOURCES
PERFORMANCE
QUADRUPOLES
SYNCHROTRON RADIATION
TOPOLOGY
VACUUM SYSTEMS
BRAZILIAN ORGANIZATIONS
BREMSSTRAHLUNG
CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTROMAGNETS
ELECTRONIC EQUIPMENT
EQUIPMENT
MAGNETS
MATHEMATICS
MULTIPOLES
NATIONAL ORGANIZATIONS
POWER SYSTEMS
RADIATION SOURCES
RADIATIONS
430303* - Particle Accelerators- Experimental Facilities & Equipment
430300 - Particle Accelerators- Auxiliaries & Components