Title :
A variable current bypass shunt for electromagnets
Author :
Berndt, M.M. ; Lipari, J.J.
Author_Institution :
Stanford Linear Accel. Center, CA, USA
Abstract :
An IGBT (insulated-gate bipolar transistor) is used to control the current in bypass circuits that vary the relative strength of magnets connected in series. Each circuit consists of a water-cooled assembly rated for continuous operation at 70 V and 0-50 A DC, with 1-kV insulation between control/monitoring elements and magnets. The circuit operates as a 10-kHz PWM (pulsewidth-modulated) switcher that includes filters and transient protection. Four switcher assemblies were built and installed in the SLC (Stanford Linear Accelerator Center Linear Collider) main arc magnet system and have performed as predicted
Keywords :
electromagnets; insulated gate bipolar transistors; switching circuits; 0 to 50 A; 10 kHz; 70 V; SLC; electromagnets; insulated-gate bipolar transistor; main arc magnet; pulsewidth-modulated; switcher; variable current bypass shunt; Assembly; Electric variables control; Electromagnets; Insulated gate bipolar transistors; Insulation; Magnetic circuits; Magnetic variables control; Magnets; Monitoring; Pulse width modulation;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301549
