八極全磁浮軸承之質量偏心補償

李紀賢(Li Chi-Sian)

指導教授 ： 陳世樂

國立中正大學/工學院/機械工程學系/碩士(2013年)

摘要

如今能源議題越來越受到重視，而又因為控制理論及材料科學的發展，飛輪儲能系統的技術也跟著日新月異。飛輪儲能的主要原理為藉由轉子轉動將能量以旋轉動能的形式儲存起來，轉速越高則能量儲存密度也越高。而為了解決轉軸和軸承之間的磨耗問題，現今多採用非接觸式的軸承－磁浮軸承。而對旋轉機械而言，若轉子質量不平衡則會導致系統受到偏心力干擾，使得系統性能下降或不穩定。尤其對磁浮軸承此類高轉速系統的影響更為明顯。因此，本論文將針對飛輪儲能系統之磁浮軸承系統做質量偏心補償，在此為了配合儲能系統，本研究採取Adaptive Autocentering Control(AAC)做控制，其理由是AAC的平衡點在於質心，因此在系統穩定時，轉軸將繞著慣性主軸做旋轉，故不需要再花多餘的能量去抵抗偏心力。另外本研究再整合ISMC於AAC內做強健性控制，最終再與敝實驗室之機台－飛輪儲能系統之八極全磁浮軸承系統的系統規格做數值模擬與分析。

關鍵字

磁浮軸承 ； 質量偏心

並列摘要

Nowadays, Energy Issue is more and more important, and development of control theory and materials science, flywheel energy storage system technology also evolves rapidly. The principle of flywheel energy storage system which is that the rotor rotate itself to store energy in kinetic. If rotate speed higher, the energy stored density is also higher. In order to solve the problem of friction between bearing and rotor, Use non-contact bearing – Magnetic bearing. For rotating machine, unbalance of rotor mass will result in the system being eccentric force interference, and the system performance will be degradation or instability. Furthermore,this study used ISMC to AAC to do robust control. Finally, we use our lab’s flywheel energy storage system's 8-pole systems to do numerical simulation and analysis.

參考文獻

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