表面磁鐵型永磁同步自軸承馬達控制策略改善及驗證

Improvement of Control Strategy and Verification of a SPM Type PMSM Self-Bearing Motor

周家緯(Chia-Wei Chou)

指導教授 ： 楊勝明

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00387

摘要

永磁同步自軸承馬達結合了馬達與主動式磁力軸承，具有零摩擦力、低噪音、高轉速、以及高功率等特性。傳統之自軸承馬達具有轉矩繞組與懸浮繞組，運轉時必須控制這兩種繞組電流同時產生轉矩與徑向力。本論文以表面式永磁同步馬達為對象，延續先前關於徑向力控制之研究，修正永磁同步自軸承馬達徑向力相關參數與徑向力數學模型、電流控制的方法及徑向位移控制器設計，同時亦考慮轉子偏移時，磁鐵所產生的磁拉力，利用單一繞組同時產生馬達轉矩與轉子懸浮之徑向力，亦即不需機械軸承，便可使轉子旋轉並且懸浮於氣隙中。自軸承馬達之模型使用有限元素軟體做分析，提出的控制法則以DSP控制器實現，並以實驗驗證之。

關鍵字

永磁同步馬達 ； 自軸承馬達 ； 磁懸浮 ； 徑向力控制

並列摘要

The Permanent magnet synchronous motor which combines self-bearing motor with active magnetic bearings contains all the features of non-friction, low-noise, high-speed and strong-power. The traditional self-bearing motor has torque windings and suspension windings. They must be controlled when these two winding current are operated at the same time to order to produce torque and radial force. This essay studies the surface permanent magnet synchronous motor as an object, extends the previous research on the radial force control, revises the parameters of the permanent magnet synchronous self-bearing motor, mathematical model of the radial force, the analysis of cogging force and cogging torque, the methods of the current control, and the radial position controller design. Meanwhile, the magnetic-pull force which was generated by the magnet when the rotor offsets is also considered. The use of motor torque while producing a single winding and the rotor suspension of the radial force without mechanical bearings, will make the rotor to rotation and to suspension in the airgap. The model of the self-bearing motor is analyzed using finite element analysis software, and the control method is realized using DSP controller and proved by experiments.

並列關鍵字

Permanent Magnet Synchronous Motor ； Self-bearing Motor ； Magnetic Levitation ； Radial Force Control

參考文獻

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