6. Brief Reports

PRECISION FOUR-QUADRANT CURRENT SOURCE VCH-500-12R FOR SUPERCONDUCTING SOLENOIDS

Yuriy S. Aktershev
1. Budker Institute of Nuclear Physics SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
Yu.S.Aktershev@inp.nsk.su
Sergey S. Vasichev
1. Budker Institute of Nuclear Physics SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
S.S.Vasichev@inp.nsk.su
Vladimir F. Veremeenko
1. Budker Institute of Nuclear Physics SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
The material was received by the Editorial Board: 20.02.2017
A precision controllable bidirectional current source 0-500A for superconducting solenoids used in particle physics experiments has been proposed. This article discusses the operation principle of the designed device including a 40-kHz voltage conversion with subsequent synchronous rectification and an approach to energy recuperation from large inductive loads. It also presents some circuit designs aimed at reducing switching losses and increasing the overall efficiency. Current instability for 8 hours of continuous operation is no more than 0.01 % of the normal current.

Keywords:
precision current source, synchronous rectifier, current stability, energy recuperation, bidirectional, four-quadrant.
УДК 539.1.075 + 621.311.6

PRECISION FOUR-QUADRANT CURRENT SOURCE VCH-500-12R FOR SUPERCONDUCTING SOLENOIDS
References: Aktershev Yu. S., Vasichev S. S., Veremeenko V. F. PRECISION FOUR-QUADRANT CURRENT SOURCE VCH-500-12R FOR SUPERCONDUCTING SOLENOIDS. Siberian Journal of Physics . 2017, vol. 12, no. 2. P. 138–141. (in Russ.). DOI: 10.54362/1818-7919-2017-12-2-138-141