【正文】 (5) ia0, ib0 and ic0。(3) ia0, ib0 and ic0。NANCHANG UNIVERSITY外文資料原文及譯文（2006—2010年） 學 院： 信息工程學院 系 電氣與自動化工程系 專 業(yè)： 電氣工程及其自動化 班 級： 電機電器062班 學 號： 6101106076 姓 名： 閆 永 佳 指導教師： 黃 劭 剛 起訖日期： ~ Deadtime Compensation of SVPWM Based on DSP TMS320F2812 for PMSMSong Xuelei*, Wen Xuhui, Guo Xinhua, and Zhao FengInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing, Email: songxlAbstract—The deadtime effect in a threephase voltage source inverter can result in voltage losses, current waveform distortion and torque pulsation. In order to improve the current waveform and decrease the torque pulsation, this paper proposes a deadtime pensation method of SVPWM. This method divides the iα iβ plane into six sectors and pensates the deadtime of SVPWM according to the sector number of stator current vector determined by the α and βaxis ponents of the stator current vector in the twophase static reference frame. In addition, this method can be implemented entirely through software without any extra hardware. Finally experiments based on DSP TMS320F2812 are established and made, and the experiment results indicate that the proposed method is correct and feasible.Index Termsdeadtime pensation,SVPWM,PMSM,TMS320F2812I. INTRODUCTIONBecause the permanent magnet synchronous machine (PMSM) has a lot of advantages such as high power density, high efficiency, high torque to inertia ratio, high reliability, et al[1],therefore, the PMSM driving system have been widely used in many application fields, especially in hybrid electric vehicles (HEV) in recentyears[2][6]. In the PMSM driving system, the threephase voltage source inverter is usually adopted and the IGBT and MOSFET are also used because of their fast switchingfrequency. For the threephase voltage source inverter, in order to avoid the short circuit of the dc link occurring when the two switch devices of the same phase are turned on simultaneously, the deadtime is usually inserted in the gate driving switch signals. During the duration of the deadtime, both of the two switch device of the same phase are turned off. The existing of the deadtime will lead to a series of deadtime effect problems such as voltage losses, current waveform distortion and torque pulsation, especially under the condition of small current or low speed.SVPWM (Space Vector Pulse Width Modulation) is a popular modulation method for threephase voltage source inverter in motor driving system. In order to improve the current waveform of motors and decrease the torque pulsation of motors, several deadtime pensation methods of SVPWM have been researched and used in the motor driving system[7][11]. Most of the pensation methods are based on the theory of average voltage deviation. In this paper, a novel deadtime pensation method of SVPWM, which is also based on the theory of average voltage deviation, is proposed. This method divides the iα iβ plane into six sectors and pensates the deadtime of SVPWM according to the stator current vector angle φ determined by the α and β axis ponents of the stator current vector in the α β reference frame. In addition, this method can be implemented entirely through software without any extra hardware design. Finally experiments are made on the PMSM driving platform based on DSP TMS320F2812 to test and verify the proposed pensation method.II. DEADTIME COMPENSATION METHOD shows the topology diagram of the PMSM driving system whose invert unit adopts the threephase voltage source inverter. In , Q1, Q2, Q3, Q4, Q5 and Q6 are six IGBTs of the threephase voltage source inverter, and D1, D2, D3, D4, D5 and D6 are their reverse parallel diodes respectively. In addition, the driving switch signals g1, g2, g3, g4, g5 and g6 are provided by the control unit of the driving system.Define the phase currents ia, ib and ic are positive when they flow from the inverter to PMSM, and negative when they flow from PMSM to the inverter. There are eight switch bination states for the six IGBTs in the threephase voltage source inverter, and during the duration of deadtime, there are correspondingly six current bination states for threephase currents ia, ib and ic according to their polarity:(1) ia0, ib0 and ic0。其間每一過程都得到指導導師黃劭剛教授的悉心指導，黃老師每周安排兩次見面會，身體力行、兢兢業(yè)業(yè)地為我們排憂解難，不僅治學嚴謹而且為人師表，堪稱良師益友，教給我們的不僅是知識還有待人處世的積極態(tài)度，在此表示衷心的感謝。畢業(yè)設(shè)計是學生即將完成學業(yè)的最后一個重要環(huán)節(jié)，在學生從校園走向社會起到很好的承前啟后的作用，所以要培養(yǎng)嚴肅認真的科學態(tài)度和求實的工作作風，形成正確的世界觀，掌握科學的方法論，培養(yǎng)綜合運用所學基礎(chǔ)理論、專門知識、基本技能，發(fā)現(xiàn)、分析、解決與本專業(yè)相關(guān)的實際問題，以及從事科學研究工作或擔負專門技術(shù)工作的基本能力。使我對科學研究的過程和方法，有了一個深刻的體會和了解。做畢業(yè)設(shè)計的過程，是一個知識的應用的過程，同時也是檢驗自己的過程。同時對所學知識進行了梳理與總結(jié)，并培養(yǎng)和提高了自己獨立分析、解決問題的能力。并對電磁設(shè)計進行了優(yōu)化設(shè)計，利用計算機程序?qū)﹄姍C設(shè)計進行優(yōu)化設(shè)計的調(diào)試，分別為：；。圖73單相繞組聯(lián)結(jié)圖圖74 三相繞組聯(lián)結(jié)圖參考文獻[1]. 陳世坤 電機設(shè)計[M] 北京：機械工業(yè)出版社 2000[2]. 李發(fā)海 朱東起 電機學[M] 北京：科學出版社 2001[3]. 韓俊良 風力發(fā)電設(shè)備的技術(shù)特點及發(fā)展前景[J] 大連起重集團有限公司設(shè)計一院2004[4]. 孫國偉 程小華 變速恒頻雙饋風力發(fā)電系統(tǒng)及其發(fā)展趨勢[J] 華南理工大 學電力學院 2004.[5]. 中小電機行業(yè)發(fā)展趨勢[J] 中國電器工業(yè)協(xié)會行業(yè)發(fā)展部 [6]. 吳旭升 孫俊忠 未來電機的發(fā)展與展望[J] 船電技術(shù) [7]. 辜成林 陳喬夫 熊永前 電機學[M] 華中科技大學出版社 2001[8]. 李隆年 王寶玲 電機設(shè)計[M] 清華大學出版社 1992[9]. 中小型電機設(shè)計手冊[M] 機械工業(yè)出版社 上海電器科學研究所[10]. 電機設(shè)計資料匯編[M] 南昌大學電氣自動化系電機教研室 2004[11]. 孟大偉 孔祥春 AutoCAD在電機設(shè)計中的應用[J] 哈爾濱電工學院學報 1991 ，No3 [12]. 中小型三相異步電動機電磁設(shè)計手算程序 [M] 南昌大學電氣自動化系電機教研室．[13]. 彭友元 電機繞組手冊[M] 遼寧科學技術(shù)出版社[14]. 陳世坤編 電機設(shè)計[M] 機械工業(yè)出版社[15]. 李發(fā)海等合編 電機學[M] 科學出版社[16]. 辜承林 陳橋夫 熊永前 電機學[M] 華中科技大學出版社[17]. 張躍峰等編 AUTO CAD 2004入門與提高[M] 清華大學出版社[18]. 徐剛 最新國內(nèi)外電機設(shè)計制造新工藝新技術(shù)與檢修及質(zhì)量檢測技術(shù)標準應用手冊(上)[M] 銀聲音像出版社[19]. 張培星 變頻器方案[M] 北京北洋電子技術(shù)有限公司[20]. 彭兵 相變頻調(diào)速同步電動機設(shè)計[D] 沈陽工業(yè)大學[21]. 陳伯時 電力拖動自動控制系統(tǒng)[M] 機械工業(yè)出版社[22]. 戴文進 徐龍權(quán) 電機學[M] 清華大學出版社總結(jié)本文為75kw4極變頻調(diào)速同步電動機及其控制系統(tǒng)的設(shè)計，電機設(shè)計是復雜的過程，需要考慮的因素和確定的尺寸、數(shù)據(jù)很多，這就難免遇到復雜的矛盾。在此次同步電動機設(shè)計過程中，導師給我們提供了轉(zhuǎn)子沖片圖的樣板，根據(jù)計算出的數(shù)據(jù)就可以用AUTOCAD畫出圖形。在此次同步電動機設(shè)計過程中，導師給我們提供了定子沖片圖的樣板和繪圖的主要步驟，然后根據(jù)計算出的主要尺寸就可以用AUTOCAD畫出圖形。此外，Auto CAD支持Object ARX、Acti