Integrated, FPGA Based Power Supply for Accelerator Magnets

Author

Taylor, J. ; du T.Moutoi, H. ; Jones, T.

Author_Institution

Univ. of Stellenbosch, Stellenbosch

fYear

2007

Firstpage

165

Lastpage

170

Abstract

This paper describes the design of a digitally controlled 3.5 kW power supply for a Van de Graaff accelerator analysing magnet. A two-stage high-frequency (48 kHz and 380 kHz) isolated switch-mode topology is used. The control system and pulse-width modulation generator is implemented within a field-programmable gate array. Additionally a feedforward strategy is implemented to greatly reduce output current harmonic content. The power supply output current ranges from 1 A to 15 A through a >1 H, 14.4 Omega load. Special attention is given to accuracy and precision and the theoretical analysis is verified both by simulation and experimentation.

Keywords

PWM power convertors; accelerator magnets; feedforward; field programmable gate arrays; power supplies to apparatus; switching convertors; van de Graaff accelerators; FPGA-based power supply; Van de Graaff accelerator; accelerator magnets; current 1 A to 15 A; current harmonic content reduction; digitally controlled power supply; feedforward control; feedforward strategy; field-programmable gate array; frequency 48 kHz to 380 kHz; power 3.5 kW; pulse-width modulation generator; two-stage high-frequency isolated switch-mode topology; Accelerator magnets; Control systems; Digital control; Field programmable gate arrays; Magnetic analysis; Power supplies; Pulse modulation; Pulsed power supplies; Space vector pulse width modulation; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2007. PESC 2007. IEEE

Conference_Location

Orlando, FL

ISSN

0275-9306

Print_ISBN

978-1-4244-0654-8

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2007.4341983

Filename

4341983