【摘 要】
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Various kinds of disturbances exist in centrifugal compressor with active magnetic bearings during surge control.In the presence of many kinds of disturbances,the surge control performance was researc
【机 构】
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College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,
论文部分内容阅读
Various kinds of disturbances exist in centrifugal compressor with active magnetic bearings during surge control.In the presence of many kinds of disturbances,the surge control performance was researched in this paper.Firstly,the Greitzer model of centrifugal compressor was established and the relationship between tip clearance and compressor dynamics was derived.Then,the disturbance factors that may exist in the surge control were summarized.Finally,the surge control platform of centrifugal compressor with active magnetic bearings was set up,and the experiments were carried out.The influence of different disturbances on the surge control performance of the compressor was analyzed.The results showed that when considering the disturbances,magnetic bearing system still had a good effect on surge control.Also,compared to the disturbance on the mass flow,the disturbance on throttle valve opening was more obvious.
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