Study of Active Magnetic bearing for Helium Circulator in HTR-10

摘要

Helium circulator is a key equipment in the 10MW high temperature gas-cooled reactor (HTR-10). It is installed in pressure shell and the driving motor of circulator operates at 0.1 MPa, 65 °C helium condition. Under that condition it is difficult to lubricate and maintenance the bearings. So the active magnetic bearings (AMBs) used in helium circulator are studied. The AMBs are controlled by a 32-bits digital signal processor (DSP) and a switching-type power amplifier. The experimental results of long-term operating, cold condition operating and high temperature operating with full load prove that the AMBs meet the requirements of HTR-10 very well. The helium circulator will be the first AMBs equipment servicing in nuclear reactor in China.