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標題: | 內藏式永磁馬達MTPA/MTPV 控制上改良與直接力矩控制比較 Comparisons between improved MTPA, MTPV and DTC for Interior Permanent Magnet Machine |
作者: | Tsung-En Pai 白宗恩 |
指導教授: | 楊士進(Shih-Chin Yang) |
關鍵字: | 直接力矩控制,電感估測,高頻注入,內藏式永磁馬達, Direct torque control,inductance estimation,high frequency injection,IPMSM, |
出版年 : | 2019 |
學位: | 碩士 |
摘要: | 本論文研究內藏式永磁馬達於每安培最大轉矩原理(maximum torque per ampere, MTPA) 與 每伏特最大轉矩原理(maximum torque per volt, MTPV)的改良,考量MTPA與MTPV控制時的參數敏感性,本研究於MTPA與MTPV控制時結合高頻注入電感估測法進行電感在線估測,提高電感參數在於控制的準確性,以期提高MTPA與MTPV控制的效率,為評估高頻注入電感估測法與其他電感估測法之差異,本研究將不同的電感估測法應用於MTPA與MTPV控制進行比較,驗證其效能。
另外,為了減低參數誤差對馬達控制之影響,本論文亦研究內藏式永磁馬達直接力矩控制 (direct torque control, DTC)。不同於向量控制的力矩開迴路控制架構,直接力矩控制為磁通與力矩閉迴路控制,以期能夠具有較低的參數敏感性。本篇研究提出定頻率脈寬調變(Pulse Width Modulation, PWM)之改良型直接力矩控制,並討論直接力矩控制時磁通與力矩參考命令的在線決定,經由實驗驗證其可行性之後,最後將改良式的直接力矩控制與結合高頻注入電感估測之MTPA、MTPV控制進行比較,討論其動態響應、參數敏感性及整體效能。 This thesis proposes an on-line inductance estimation for interior permanent magnet synchronous motor (IPMSM) to maximize the torque output performance. On the basis, high frequency voltage injection is developed for on-line inductance estimation to improve the maximum torque per ampere (MTPA) control and the maximum torque per volt (MTPV) control performance. It is shown that the torque output is increased during the full load operation in an IPMSM under the flux saturation. Comparing to model-based inductance estimation, the proposed injection based inductance estimation achieve the higher torque output for IPMSM under both MTPA and MTPV. Instead of MTPA/MTPV based open-loop torque control, a direct torque control (DTC) is also developed to further improve the IPMSM drive performance through the torque closed-loop control. Different from conventional DTC schemes, this thesis develops a modified DTC scheme to be compatible with fixed frequency space vector pulse width modulation (SVPWM). More importantly, the flux and torque command are both determined real-time based on the analytical model. According to the experimental results, the proposed DTC achieves the better torque output than that under MTPA/MTPV with on-line inductance estimation. However, the parameter sensitive strongly limits DTC performance. Keywords: Direct torque control, inductance estimation, high frequency injection, IPMSM. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/21407 |
DOI: | 10.6342/NTU201901848 |
全文授權: | 未授權 |
顯示於系所單位: | 機械工程學系 |
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