Compressor is the core part of supercritical carbon dioxide(S-CO_2) Brayton power generation cycle(closed cycle). This paper summarizes the experimental research progress of S-CO_2 compressor at home and abroad

including the main test platform and the latest experimental test results. It focuses on the technical routes adopted by different power levels of supercritical S-CO_2 centrifugal compressor. The commonness and particularity existing in the experimental research of supercritical S-CO_2 centrifugal compressor are summarized and analyzed

from the aspects of structural design

aerodynamic performance and related operation test issues. In addition

the Institute of Engineering Thermophysics

Chinese Academy of Sciences has completed the first full-load test of MW-level supercritical S-CO_2 closed cycle centrifugal compressor under multiple inlet conditions

with the maximum experimental speed of 32 000 r/min

mass flow rate of about 13 kg/s

total pressure ratio of close to 2.0

isentropic efficiency of 82%

and many test indexes reaching or exceeding the highest experimental results reported in the world. This paper introduces the experimental test platform and related facts of the experimental research in detail.