永磁同步電機轉子位置檢測濾波方法研究

艾勝 程思為 肖飛 曾啟帆 朱俊杰

摘 要：轉子位置檢測是實現永磁同步電機（PMSM）高性能控制的一個關鍵環節。由于檢測環節非理想特性的存在，旋轉變壓器的轉子位置檢測結果中會產生微小誤差，在電機振動噪聲指標嚴格的領域，位置檢測誤差會對電機的振動噪聲產生不利影響。針對以上問題，本文首先對旋轉變壓器的位置檢測原理進行了簡要分析，在此基礎上，對旋轉變壓器各種非理想特性進行了分類和分析，得到了不同情況下的轉子位置誤差表達式。為消除可能出現的誤差對電機控制造成的影響，提出了一種位置檢測濾波算法，仿真和試驗表明：所提出的算法能有效濾除旋變位置檢測誤差，同時不產生延時，應用效果好。

關鍵詞：永磁同步電機；旋轉變壓器；位置檢測；誤差；濾波

DOI：10.15938/j.emc.（編輯填寫）

中圖分類號：TM93文獻標志碼：A文章編號：1007-449X（2016）00-0000-00（編輯填寫）

Abstract： Rotor position sensing is a critical process in the high performance control of permanent magnet synchronous machines（PMSMs）. However， due to the presence of resolver non-idealities， the rotator position signal feedback of the resolver will inevitably have some small errors. Such errors will result in increased vibration and noise of the machine， which is not desirable in applications with stringent vibration and acoustic noise requirement. To solve the problem， this paper first reviews the position-sensing principle of the resolver briefly. By classifying and analyzing different types of resolver non-idealities， the paper introduces various rotor position error expressions due to different causes. To eliminate those errors in the control of the PMSM， the paper proposes a novel position feedback signal filtering method. Both simulation and experimental results show that the proposed method can effectively filter out the position errors without introducing any delay in the position signal， making it an excellent method for practical application.

Keywords： permanent magnet synchronous machine； resolver； position detection； error； filter