电容运转单相异步电动机电动—制动调速

The Motoring—Braking Speed Regulation of Single Phase Capacitor-run Motor

本文提出的电动——制动调速线路,用于通风机负载下电容运转单相异步电动机的调速。其特点是通过改变电动机电动与制动时间的比例实现调速,对通风机负载只需采用开环控制,转速可在零至最大值范围内平滑地调节,线路结构紧凑,成本低,无噪音。

The paper proposes a“Motoring— Braking Speed Regulation”circuit,which is used in the adjustable speed system of the single—phase capacitor—run mo- tor under the ventilated load.the feature of this circuit is that the speed is regulat- ed by changing the ratio of the motoring —braking time.it needs only to adopt the open—loop controe system for the ventilated load,the speed can be regulated smoothly in the range from zero to maximum.This circuit has the adventages of compact structre,low cost and without noise.