Design of the DC and AC magnet power supplies for the soleil synchrotron radiation source

This paper describes the power supplies designed for the electromagnet system of the SOLEIL third generation light source. This new source demands a very high level of performance from the power converters, notably in terms of current precision and stability. The means to reach such performances - mainly based on precise measurements and digital control with high resolution PWM - are detailed. As synchronized control of the different equipment is a major requirement, the high level control system of the power supplies using the Profibus-DP fieldbus is also presented.