永磁交流自軸承馬達無轉角感測器控制系統研製

自軸承馬達是結合馬達與主動磁力軸承特性之新型馬達，具有零摩擦力、低噪音、高轉速、以及高功率等特性。自軸承馬達具有轉矩繞組與懸浮繞組，運轉時必須同時控制這兩種繞組電流產生轉矩與徑向力。本論文以永磁交流馬達為研究對象，設計、製作一內嵌磁鐵型永磁交流自軸承馬達，並以有限元素分析軟體計算懸浮徑向力參數以及分析懸浮徑向力數學模型，同時亦針對轉子位移時，磁鐵產生之磁拉力做分析，最後以實驗驗證自軸承馬達之懸浮徑向力控制以及懸浮徑向位置控制。永磁交流馬達於控制時，需要偵測轉角以回傳正確訊號做控制，但於自軸承馬達控制中，無法裝設固定式之轉角感測器，因運轉時轉子震動會破壞裝置之結構，故本篇論文亦探討自軸承馬達無轉角感測器之應用。

關鍵字

自軸承馬達；永磁交流馬達；磁懸浮；徑向力；無轉角感測器

並列摘要

Self-bearing motor is a combins of motor and active magnetic bearing characteristics of the new motor, which contains all the features of zero-friction, low-noise, high-speed and strong-power. The self-bearing motor has torque winding and suspension winding. They must be controlled when these two winding current are operated at the same time in order to produce the torque and the radial force. This essay studies the permanent magnet AC motor, design and production of a buried magnet type permanent magnet AC self-bearing motor, and using finite element analysis software to calculate suspension parameters and suspended mathematical model of the radial force. Meanwhile the magnetic pull force which was generated by the magnet when the rotor offsets is also considered, finally, verification by experiment of radial force control and radial position control of self-bearing motors. Permanent magnet AC motors needs to detect shaft angle in order to feed the correct signal to control, but self-bearing motors can not install fixed shaft angle sensors, the rotor vibration due to the operation will destroy the structure of the device, so the essay also studies the shaft angle sensorless control strategy application to the self-bearing motor control system.

並列關鍵字

Self-Bearing Motors ； Permanent Magnet AC Motors ； Magnetic Levitation ； Radial Force ； Shaft Angle Sensorless

參考文獻

[1] Y. Okada., N. Yamashiro, K. Ohmori, T. Masuzawa, T. Yamane, Y. Konishi and S. Ueno, “Mixed flow artificial heart pump with axial self-bearing motor,” Proceedings of IEEE/ASME Transactions on Mechatronics, Dec. 2005, pp. 658-665.

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