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一種改進滑模控制器的永磁同步電機MTPA控制研究

來源：電工電氣發布時間：2021-02-23 09:23 瀏覽次數：1088

一種改進滑模控制器的永磁同步電機MTPA控制研究

林繼燦¹，劉書敏²，林敏怡²

(1 廣東海洋大學寸金學院智能制造學院，廣東湛江 524094；2 廣東海洋大學寸金學院管理學院，廣東湛江 524094)

摘要：為改進PI控制器在永磁同步電機中的速度調節性能，提出新冪指數趨近律的滑模控制器的永磁電機MTPA矢量控制策略，在傳統的指數趨近律中增加了新的冪次趨近律，提高系統的收斂能力，同時減小抖動。在永磁同步電機中引入補償式最大轉矩電流比的控制策略，根據電機中電流變換，得到控制過程中的轉矩，利用獲得的轉矩作為補償信號，提高q 軸電流的響應。仿真結果表明，與常規的矢量控制方法和傳統滑模控制器對比，該結合方法能有效減小系統抖動，具有更強的控制精準性和抗負載轉矩擾動能力。

關鍵詞：冪次趨近律；滑模控制；最大轉矩電流比；轉矩補償；永磁同步電機

中圖分類號：TM351 文獻標識碼：A 文章編號：1007-3175(2021)02-0012-05

Research on MTPA Control of Permanent Magnet Synchronous Motor

Based on Improved Sliding Mode Controller

LIN Ji-can¹, LIU Shu-min², LIN Min-yi²

（1 School of Intelligent Manufacturing, Guangdong Ocean University Cunjin College, Zhanjiang 524094, China;

2 School of Management, Guangdong Ocean University Cunjin College, Zhanjiang 524094, China）

Abstract: In order to improve the speed regulation performance of PI controller in permanent magnet synchronous motor, a new power exponential approach law sliding mode controller for permanent magnet motor MTPA vector control strategy is proposed. A new power approach law is added to the traditional exponential approach law to improve the convergence ability of the system and reduce the jitter.The control strategy of compensating maximum torque per ampere is introduced in the PMSM. According to the current transformation in the motor, the torque in the control process is obtained, and the obtained torque is used as the compensation signal to improve the response of q-axis current. The simulation results show that compared with the conventional vector control method and the traditional sliding mode controller, the combined method can effectively reduce the system jitter, and has stronger control accuracy and anti load torque disturbance ability.

Key words: power approach law; sliding mode control; maximum torque per ampere; torque compensation; permanent magnet synchronous motor

參考文獻

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一種改進滑模控制器的永磁同步電機MTPA控制研究