本文選題：無軸承永磁同步電機 + 三相繞組單元��； 參考：《江蘇大學》2017年碩士論文

【摘要】：單繞組無軸承永磁同步電機(BPMSM)繼承了傳統(tǒng)的雙繞組BPMSM的功率密度高、無潤滑、無磨損、無機械噪聲等優(yōu)勢,同時內(nèi)部繞組結(jié)構(gòu)的優(yōu)化使得電機結(jié)構(gòu)更為緊湊,加工難度降低,功率損耗和成本減小,可靠性得到提高。隨著生產(chǎn)技術革新和器件制造水平提高,工業(yè)自動化對現(xiàn)代永磁電機的設計與應用要求更加嚴格。因此,單繞組BPMSM在高速離心機、人工心臟血泵、工業(yè)機器人驅(qū)動、電動汽車飛輪儲能和航天飛行器等電氣傳動領域具有廣泛的應用前景。本文圍繞單繞組BPMSM的內(nèi)部結(jié)構(gòu)原理、T型繞組結(jié)構(gòu)方案、懸浮力矢量閉環(huán)控制策略及數(shù)字控制系統(tǒng)展開了研究。具體研究內(nèi)容及取得的成果如下:首先,較為全面的論述了國內(nèi)外BPMSM的發(fā)展歷史,研究現(xiàn)狀和應用前景,并綜述了單繞組BPMSM的發(fā)展概況。在回顧了無軸承電機各類繞組結(jié)構(gòu)與控制策略的基礎上,提出了一種雙三相BPMSM分布式單繞組拓撲結(jié)構(gòu),分析了電機徑向懸浮力和電磁轉(zhuǎn)矩的工作原理,建立其數(shù)學模型,并基于有限元軟件ANSYS/Maxwell進行了仿真分析。同時為簡化控制策略,相應地建立了一種控制電機對稱相電流不平衡的控制策略,利用Matlab/simulink搭建了仿真模型進行仿真驗證。其次,在雙三相BPMSM繞組結(jié)構(gòu)基礎上,對其進行優(yōu)化改進。提出了一種T型繞組結(jié)構(gòu),能夠抵消掉對應相繞組內(nèi)感應電動勢,避免影響可控懸浮力。進一步推導數(shù)學模型,基于有限元軟件比較了繞組內(nèi)的感應電動勢、徑向懸浮力與電磁轉(zhuǎn)矩。同時在該繞組結(jié)構(gòu)基礎上建立對應的電機控制策略,并增加了基于繞組電流觀測的懸浮力矢量閉環(huán)控制環(huán)節(jié),與位移閉環(huán)組成雙閉環(huán)控制系統(tǒng)。利用Matlab軟件與上章采用的控制策略進行仿真比較,證明了該控制策略對懸浮力控制性能和運行穩(wěn)定性的改善。最后,按照上章所述T型繞組BPMSM控制策略,采用數(shù)字控制處理器TMS320F2812的設計了硬件系統(tǒng)電路及軟件系統(tǒng)程序。完成了DSP最小應用系統(tǒng)電路、主驅(qū)動電路和信號采樣電路設計與焊接工作,提供了系統(tǒng)控制軟件程序設計流程,并與控制系統(tǒng)的硬件電路的聯(lián)合調(diào)試。將一臺雙繞組BPMSM樣機內(nèi)部繞組重新繞制,按T型繞組結(jié)構(gòu)方案接入硬件系統(tǒng)部分進行聯(lián)合調(diào)試與實驗分析,獲得了有價值的測量波形,初步實現(xiàn)了課題研究目的和實驗期望效果。
[Abstract]:Single winding bearingless permanent magnet synchronous motor (BPMSM) inherits the advantages of traditional double winding BPMSM, such as high power density, no lubrication, no wear, no mechanical noise, etc. At the same time, the optimization of internal winding structure makes the motor structure more compact and the processing difficulty reduced. The power loss and cost are reduced, and the reliability is improved. With the innovation of production technology and the improvement of the manufacturing level of devices, the design and application of modern permanent magnet motors (PMSM) are required more strictly by industrial automation. Therefore, single winding BPMSM has a wide application prospect in the fields of high-speed centrifuge, artificial heart blood pump, industrial robot drive, electric vehicle flywheel energy storage and aerospace vehicle. In this paper, the internal structure principle of single winding BPMSM and the scheme of T winding structure, the closed loop control strategy of levitation force vector and the digital control system are studied. The research contents and achievements are as follows: firstly, the development history, research status and application prospect of BPMSM at home and abroad are discussed, and the development of single-winding BPMSM is summarized. On the basis of reviewing the windings structure and control strategy of bearingless motor, this paper presents a distributed single-winding topology of dual-three-phase BPMSM, analyzes the working principle of the motor's radial suspension force and electromagnetic torque, and establishes its mathematical model. And based on the finite element software ANSYS / Maxwell, the simulation analysis is carried out. At the same time, to simplify the control strategy, a control strategy of unbalanced symmetrical phase current of motor is established, and the simulation model is built by Matlab / Simulink for simulation verification. Secondly, based on the double-phase BPMSM winding structure, it is optimized and improved. In this paper, a T type winding structure is proposed, which can cancel the inductive EMF in the corresponding phase winding and avoid the influence of controllable levitation force. Based on the finite element software, the inductive electromotive force, radial suspension force and electromagnetic torque in the windings are compared. At the same time, the corresponding motor control strategy is established on the basis of the winding structure, and the suspension force vector closed-loop control link based on the winding current observation is added, and the double closed-loop control system is composed of the displacement closed-loop control system. By using Matlab software and the control strategy adopted in the previous chapter, the simulation results show that the control strategy improves the performance and operation stability of suspension force control. Finally, according to the control strategy of T-type winding BPMSM, the hardware circuit and software program are designed with the digital control processor TMS320F2812. The design and welding of the DSP minimum application system circuit, the main drive circuit and the signal sampling circuit are completed. The program design flow of the system control software is provided, and the joint debugging with the hardware circuit of the control system is carried out. The internal winding of a dual-winding BPMSM prototype is rewound, and the T-type winding structure is connected to the hardware system for joint debugging and experimental analysis. The valuable measurement waveform is obtained. The aim of the research and the expected effect of the experiment have been preliminarily realized.
【學位授予單位】：江蘇大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM341;TP273

【參考文獻】

相關期刊論文 前10條

1 劉澤遠;楊艷;;計及磁場耦合特性的無軸承開關磁阻電機的電磁設計[J];電工電能新技術;2015年10期

2 李發(fā)宇;朱q，

本文編號：2088437