关键词: 开关磁阻电动机(SRD), 开通角, 关断角, 角度在线调制

Abstract:

In order to improve the dynamic performance of switched reluctance drives under middle and low rotor speeds, an on-line control angles tuning strategy was proposed. By calculating current tracking errors in the excitation region and demagnetizing region, the turn-on angle and turn-off angle were tuned on-line by corresponding angle regulator. The proposed control angle tuning strategy was adopted in a closed-loop speed controller. Experimental results show that the dynamic performance of SRD under middle and low rotor speeds can be improved by proposed tuning strategy. By employing proposed strategy, the peak value of phase current can be reduced and the system efficiency can be improved.

Key words: switched reluctance drive (SRD), turn-on angle, turn-off angle, on-line angles modulation