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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/120

    Title: 低能耗磁浮軸承於環型飛輪儲能系統的設計、建模與控制;Design, Modeling and Control of Low Energy Consumption Magnetic Bearings for Ring-type Flywheel Energy Storage System
    Authors: 杜忠興;TOH, CHOW-SHING
    Contributors: 機械工程系研究所
    Keywords: 低能耗磁浮軸承;海爾貝克陣列;混合式磁浮軸承;被動式磁浮軸承;主動式磁浮軸承;環型飛輪儲能系統;Halbach array;Passive magnetic bearings;Hybrid magnetic bearings;Ring-type flywheel energy storage system;Low energy consumption magnetic bearings
    Date: 2018
    Issue Date: 2019-05-23 12:52:36 (UTC+8)
    Publisher: 機械工程系研究所
    Abstract: 本論文主要是探討環型飛輪儲能系統中,磁浮軸承的磁力模型以及內藏式永磁同步馬達所產生的徑向力模型。然而,本研究的磁浮軸承是採用混合式的,分別為軸向的被動式磁浮軸承和徑向的主動式磁浮軸承。在被動式的磁浮軸承中,定子端和轉子端皆沿著軸向的方向黏貼環狀的海爾貝克陣列,其目的是用來產生軸向力來支撐轉子的重量。至於主動式磁浮軸承的部份,則是由轉子端的海爾貝克陣列和定子端的空芯繞線所組成,其可以根據繞線的電流方向在徑向上產生吸力和斥力。而且,透過環狀架構和差分繞線的設計下,主動式和被動式的磁浮軸承都可以具有線性度佳的磁力模型。本文的環型飛輪儲能系統所採用的是內藏式的永磁同步馬達,其除了可以產生扭力使轉子旋轉外,同時也會產生在徑向上的磁力,所以在控制器設計上必須可以補償這樣的效應。無論是磁浮軸承或是永磁同步馬達,磁力與氣隙、電流等的關係皆透過量測的方式取得,並利用最小平方法建立個別的磁力模型。接著,將所建立的磁力模型考慮到轉子動態中,並利用積分滑動模式來設計控制器,使轉子可以達到五個自由度的懸浮。最後,數值模擬和實驗結果可以證明轉子可以在旋轉的情況下達到五個自由度懸浮,並驗證磁力模型的準確性和控制器的可行性。
    This study is concerned with the magnetic force models of magnetic bearings and the radial force model of built-in motor in a flywheel energy storage system (FESS). The magnetic bearing is of hybrid type, with axial passive magnetic bearing (PMB) and radial hybrid magnetic bearing (HMB). For the PMB, a pair of ring-type Halbach arrays of permanent magnets are arranged vertically to support the rotor weight. For the HMB, a set of ring-type Halbach array is placed on the rotor side, which corresponds to coil sets on the stator side. The HMB can produce both attraction and repulsion forces on the radial direction, depending on the direction of the coil currents. It is found that the ring-type configuration and the differential winding scheme for coil sets can yield linear magnetic force models for both PMB and HMB. The built-in motor in this study is permanent magnet synchronous machine, the radial and tangential component of force created in the air gap of the machine. The relationship between the forces, displacement and current are established by measurement for PMB, HMB and built-in motor. Based on the obtained magnetic force model, an integral sliding mode controller is designed for the stable rotor levitation in the radial direction. The simulation and experimental results show that the rotor can be stabilized to the bearing center during rotating conditions, and verifying the accuracy of the force models and effectiveness of the levitation controller.
    Appears in Collections:[機械工程學系] 學位論文

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