本文選題：開關磁阻電機　切入點：轉矩分配　出處：《中南大學》2014年碩士論文

【摘要】：開關磁阻電機(Switched Reluctance Motor)調速系統(tǒng)是變頻調速系統(tǒng)之后迅速崛起的一種新型調速系統(tǒng),開關磁阻電機最早可追溯到19世紀40年代,即所謂“電磁制動機”,開關磁阻電機調速系統(tǒng)因其結構簡單、堅固、成本低廉、起動轉矩大、起動電流小、在整個調速范圍內具有較高的效率,且兼有直流電機和異步電機的優(yōu)點,近年來得到迅速發(fā)展。但因為電機的雙凸極結構和步進式旋轉方式,導致電機的轉矩脈動和噪音相對較大,影響了SRM在更多場合的推廣和應用。 本文針對開關磁阻電機轉矩脈動和噪音大的缺點,分析了轉矩脈動和噪音產生的原因,研究了SRM的工作原理以及轉矩脈動抑制常用的控制方法,在simulink環(huán)境下建立了SRM仿真模型,論述了開通角和關斷角對轉矩脈動的影響,得出了開通角、關斷角的優(yōu)化控制可以抑制轉矩脈動的結論,采用基于余弦型轉矩分配函數(shù)結合模糊開通角優(yōu)化在轉速電流雙閉環(huán)的控制方式下對轉矩脈動進行抑制,建立了仿真模型,驗證了該控制方案的可行性,得到了比較好的轉矩脈動抑制效果。 在上述研究基礎上,本文以55KW的三相12/8極SRM為研究對象,設計了以DSP TMS320F2812為核心控制部件、三相不對稱式半橋功率主電路、IGBT驅動器、數(shù)據采集與變換環(huán)節(jié)、光電式位置檢測裝置及保護環(huán)節(jié)轉速電流雙閉環(huán)的開關磁阻電機調速系統(tǒng)。在CCS5.2的平臺上,編寫了系統(tǒng)控制軟件。最后進行了系統(tǒng)調試,實驗結果表明,本文采用的控制方法,響應速度快,動態(tài)性能好,對開關磁阻電機的轉矩脈動和噪音具有比較明顯的抑制效果。圖55幅,
[Abstract]:Switched Reluctance Motor (SRM) speed control system is a new type of speed control system, which rises rapidly after the frequency conversion system. The switched reluctance motor (SRM) can be traced back to the 1840s, that is, the so-called "electromagnetic brake".The switched reluctance motor (SRM) speed control system has the advantages of simple structure, strong structure, low cost, large starting torque, low starting current, high efficiency in the whole speed range, and the advantages of both DC motor and asynchronous motor.It has developed rapidly in recent years.However, because of the double salient pole structure and the stepwise rotation mode, the torque ripple and noise of the motor are relatively large, which affects the popularization and application of SRM in more occasions.In this paper, the reason of torque ripple and noise is analyzed, the working principle of SRM and the control method of torque ripple suppression are studied, and the simulation model of SRM is established in simulink environment.The influence of turn-on angle and turn-off angle on torque ripple is discussed. The conclusion is drawn that the optimal control of turn-on angle and turn-off angle can restrain torque ripple.Based on the cosine torque distribution function and fuzzy turn-on angle optimization, the torque ripple is suppressed under the dual closed-loop control mode of rotational speed and current, and the simulation model is established to verify the feasibility of the control scheme.Better torque ripple suppression effect is obtained.On the basis of the above research, taking the three-phase 12 / 8 pole SRM of 55KW as the research object, this paper designs a three-phase asymmetric half-bridge power main circuit with DSP TMS320F2812 as the core control unit, and the data acquisition and conversion link.Photoelectric position detecting device and speed control system of switched reluctance motor with double closed loop speed and current of protection link.On the platform of CCS5.2, the system control software is written.Finally, the system is debugged. The experimental results show that the control method adopted in this paper has the advantages of fast response speed and good dynamic performance, and has obvious restraining effect on torque ripple and noise of switched reluctance motor.Figure 55,
【學位授予單位】：中南大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM352

【相似文獻】

相關期刊論文 前10條

1 沈天珉;杜川;廖家祥;邱忠才;;轉矩脈動最小化的直接轉矩控制系統(tǒng)[J];電氣技術;2008年07期

2 趙月花;張曉濤;;電動自行車轉矩脈動抑制分析與實現(xiàn)[J];自動化應用;2012年03期

3 王奪;胡金高;;低轉矩脈動直接轉矩控制系統(tǒng)的研究[J];電機與控制應用;2006年04期

4 邵聞博;游小杰;張立偉;鄭瓊林;于學濤;;直接轉矩控制系統(tǒng)減小轉矩脈動的仿真研究[J];變頻器世界;2007年07期

5 楊云帆;李光軍;王惠軍;張聰;;慣性動量輪電機磁極結構對轉矩脈動的影響[J];微電機;2011年07期

6 鮑曉華;楊帆;李佳慶;魏瓊;吳鋒;劉健;;汽車爪極發(fā)電機的轉矩脈動分析及其對電磁噪聲的影響[J];電工技術學報;2014年05期

7 邱建琪 ,史涔o，

本文編號：1713708