本文選題：無位置傳感器 + 換相��； 參考：《電工技術(shù)學(xué)報(bào)》2017年01期

【摘要】：針對無刷直流電機(jī)無位置傳感器換相存在換相誤差的問題,提出一種基于虛擬中性點(diǎn)的無刷直流電機(jī)無位置換相誤差閉環(huán)校正方法。將虛擬中性點(diǎn)與電機(jī)驅(qū)動(dòng)電壓中性點(diǎn)之間的電壓差引出,并對該電壓差信號與換相誤差之間的關(guān)系進(jìn)行了分析�；诖朔治�,在換相點(diǎn)前后對該電壓差信號采樣,兩次采樣結(jié)果求差后得到換相誤差控制的反饋量,以該反饋量趨近于零目標(biāo)建立基于PI的閉環(huán)校正回路。實(shí)驗(yàn)表明,該方法對換相誤差具有很強(qiáng)的魯棒性,可快速補(bǔ)償外界因素對換相時(shí)間的影響,對于15°滯后角,在1 500 r/min轉(zhuǎn)速下僅需70步,在3 000 r/min轉(zhuǎn)速下僅需40步就能使換相點(diǎn)收斂至準(zhǔn)確位置。實(shí)驗(yàn)結(jié)果驗(yàn)證了該方法的有效性。
[Abstract]:Aiming at the problem of commutation error in sensorless commutation of brushless DC motor, a closed loop correction method of position commutation error for brushless DC motor based on virtual neutral point is proposed. The voltage difference between the virtual neutral point and the drive voltage neutral point of the motor is derived, and the relationship between the voltage difference signal and the commutation error is analyzed. Based on this analysis, the voltage difference signal is sampled before and after commutation point, and the feedback quantity of commutation error control is obtained after the difference between the two sampling results is obtained, and the closed loop correction loop based on Pi is established with the feedback quantity approaching to zero target. Experiments show that the method is robust to the commutation error and can compensate for the influence of external factors on the commutation time quickly. For 15 擄lag angle, only 70 steps are needed at 1 500 r/min rotational speed. The commutation point can converge to the correct position in only 40 steps at 3 000 r/min rotational speed. The experimental results show that the method is effective.
【作者單位】： 新型慣性儀表與導(dǎo)航系統(tǒng)技術(shù)國防重點(diǎn)實(shí)驗(yàn)室(北京航空航天大學(xué));慣性技術(shù)國防科技重點(diǎn)實(shí)驗(yàn)室(北京航空航天大學(xué));
【基金】：國家自然科學(xué)基金項(xiàng)目資助(61403015,61203112)
【分類號】：TM33

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 崔臣君;劉剛;鄭世強(qiáng);;基于線反電動(dòng)勢的高速磁懸浮無刷直流電機(jī)無位置換相策略[J];電工技術(shù)學(xué)報(bào);2014年09期

2 劉剛;崔臣君;韓邦成;鄭世強(qiáng);王坤;;高速磁懸浮無刷直流電機(jī)無位置換相誤差閉環(huán)校正策略[J];電工技術(shù)學(xué)報(bào);2014年09期

3 薛曉明;楊，

本文編號：2011259