TUAP049: Digital Power Supplies for Magnet Control at the Swiss Light Source

Title: TUAP049: Digital Power Supplies for Magnet Control at the Swiss Light Source

Research Question: How can a digital control system be implemented for magnet power supplies to ensure stability and reliability in a large-scale facility like the Swiss Light Source (SLS)?

Methodology: The researchers developed a fully digital controlled, uniform solution for all magnet power supplies (PS) at the SLS. They used digital signal processors (DSP) and pulse width modulation (PWM) cards, power converters, current measurement (DCCT) and precise analog-to-digital (ADC/DAC) converter cards. They also employed point-to-point optical fiber links and industry pack modules to achieve high control density and cost-effectiveness.

Results: The digital power supply controller proved to be very stable and reliable during the commissioning of the light source. All specifications were met for all PS. The advanced diagnostic for the magnet PS turned out to be very useful not only for diagnosing the PS but also for identifying problems on the magnets.

Implications: The implementation of a fully digital control system for magnet power supplies has several benefits. It reduces drift problems, improves precision, and allows for easy software updates and troubleshooting. The use of industry pack modules and point-to-point optical fiber links also contributed to cost savings and high control density. Overall, the digital control system has proven to be successful and has set a new standard for magnet power supply control in large-scale facilities like the SLS.

Link to Article: https://arxiv.org/abs/0111019v2 Authors: arXiv ID: 0111019v2