用于無刷直流電機無位置控制的轉(zhuǎn)子磁鏈觀測器設(shè)計
徐波,楊燁
(南京理工大學(xué) 自動化學(xué)院,江蘇 南京 210094)
摘 要:針對無刷直流電機無位置控制中濾波器會引起磁鏈幅值和位置估計誤差等問題,設(shè)計了一種能夠抑制直流偏移獲取準(zhǔn)確位置的改進型轉(zhuǎn)子磁鏈觀測器。通過將二階高通濾波器和純積分器進行串聯(lián),可以有效減小位置估計誤差。在基于控制器STM320F28335 的實驗平臺上實驗,結(jié)果表明改進型轉(zhuǎn)子磁鏈觀測器能夠準(zhǔn)確估計轉(zhuǎn)子位置,有效改善電流波形,實現(xiàn)電機的平穩(wěn)高速運行。
關(guān)鍵詞:無刷直流電機;無位置控制;轉(zhuǎn)子磁鏈觀測器;位置估計
中圖分類號:TM351 文獻標(biāo)識碼:A 文章編號:1007-3175(2018)11-0005-05
Rotor Flux Observer Design for Sensorless Control of Brushless Direct Current Motor
XU Bo, YANG Ye
(School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China)
Abstract: In order to solve the problem of the amplitude and position estimation error of the magnetic chain, caused by the filter in the sensorless control of the brushless direct current (DC) motor, this paper designed a kind of improved rotor flux observer, which can restrain the accurate location of the DC offset. By combining two order high-pass filter and pure integrator, the position estimation error could be effectively reduced. The experiment on the experimental platform based on the controller STM320F28335 shows that the improved rotor flux observer can accurately estimate the rotor position, improve the current waveform effectively, and realize the smooth and high speed operation of the motor.
Key words: brushless direct current motor; sensorless control; rotor flux observer; location estimation
參考文獻
[1] 張承寧,張復(fù)琳,王志福,等. 無刷直流電動機無位置傳感器控制技術(shù)綜述[J]. 微特電機,2014,42(2):70-74.
[2] 夏長亮,方紅偉. 永磁無刷直流電機及其控制[J].電工技術(shù)學(xué)報,2012,27(3):25-34.
[3] 李志強,夏長亮,陳煒. 基于線反電動勢的無刷直流電機無位置傳感器控制[J]. 電工技術(shù)學(xué)報,2010,25(7):38-44.
[4] 王高林,陳偉,楊榮峰,等. 無速度傳感器感應(yīng)電機改進轉(zhuǎn)子磁鏈觀測器[J]. 電機與控制學(xué)報,2009,13(5):638-642.
[5] HU J, WU B. New integration algorithms for estimating motor flux over a wide speed range[J]. IEEE Transactions on Power Electronics,1998,13(5):969-977.
[6] 黃進,趙力航,劉赫. 基于二階滑模與定子電阻自適應(yīng)的轉(zhuǎn)子磁鏈觀測器及其無速度傳感器應(yīng)用[J]. 電工技術(shù)學(xué)報,2013,28(11):54-61.
[7] 陳華鋒,宋輝,王占強. 一種改進的無刷直流電機控制方法[J]. 電機與控制應(yīng)用,2015,42(1):28-35.
[8] 齊桓若,劉其輝. 基于一種新型轉(zhuǎn)子磁鏈觀測方法的矢量控制高壓變頻器[J]. 電機與控制應(yīng)用,2014,41(10):61-67.
[9] 余書瀚,陳永軍,周駿文,等. 高速無刷直流電機無位置傳感器控制反電勢相位補償?shù)难芯縖J]. 電機與控制應(yīng)用,2017,44(1):23-28.
[10] 趙克,孫東陽,王廣林,等. 四開關(guān)三相方波無刷直流電機的磁鏈跟蹤控制[J]. 電機與控制學(xué)報,2011,15(4):52-57.