22-27 September 2019
Hyatt Regency Hotel Vancouver
Canada/Pacific timezone

Tue-Af-Po2.16-11 [25]: Design of a Resistive Magnet Power Supply Based on Three-Level Buck Converters

24 Sep 2019, 14:00
Level 2 Posters 1

Level 2 Posters 1


Mr Can Wang (Hefei Institutes of Physical Science, Chinese Academy of Scienc)


Water-cooled resistive high-field research magnets require a high power supply with an extremely high current stability, and a low current ripple and noise. The conventional resistive magnet power supply uses thyristor rectifiers, followed by a passive filter and an active filter in series to reduce the voltage ripple. This Paper describes a new circuit topology design of the resistive magnet power supply, which consists of an uncontrolled rectifier bridge and a three-level buck converter in series instead of the conventional thyristor rectifier. The three-level buck converter works at a higher switching frequency, which can greatly reduce the cost, volume and weight of the filter. According to simulation and analysis results, it is seen that the three-level buck converter structure provides a lower voltage and current ripple than the conventional thyristor rectifiers, reduces the voltage stress of the power electronic devices. Beside, without power factor correction devices, this new design can achieve a higher power factor.

Primary author

Mr Can Wang (Hefei Institutes of Physical Science, Chinese Academy of Scienc)


Mr Xiaoning Liu (Hefei Institutes of Physical Science, Chinese Academy of Sciences)

Presentation Materials