GB190509940A - Improvements in the Regulation of Electric Circuits subject to Rapidly Fluctuating Loads. - Google Patents

Abstract

9940. Armistead, W., and Tilney, M. J. E. May 11. Distributing; regulating.-Relates to the method of controlling the current in a circuit which is subject to rapid fluctuations of load, in which a secondary battery or a fly-wheel auxiliary machine is connected in series with a booster machine across the circuit leads, and consists in automatically varying the voltage of the booster machine by means of an electro-magnetic regulator, which controls the booster field current so that energy is supplied to the circuit or is stored up in the battery or fly-wheel machine according as the load on the circuit is above or below the normal. As shown in Figs. 1 and 2, the field k of the fly-wheel machine b is connected directly across the mains, and a variable resistance f placed in series with the field e of the booster c, which is driven by an independent motor c<1>. In the arrangement shown in Fig. 1, the field of the regulator g, the armature of which is connected across the leads d, d', is excited by two coils h, i, which are wound to oppose each other and carry currents respectively proportional to the current from the generator a and to the pressure of the leads d, d', while in the arrangement shown in Fig. 2 the regulator g is excited by three coils, of which the coil i<1> is connected across the leads d, d' through the booster field e and the resistance f, and the coil j connected across the armature of the fly-wheel machine b. In the arrangements shown in Figs. 3 and 3<a>, the fly-wheel machine is replaced by a battery m and;the regulator g excited by three coils, of which the coils h, i carry currents respectively proportional to the current from the generator a and to the pressure of the leads d, d<1>, while the third winding i' is in one case connected across the booster c and in the other case connected in series with the booster field e and the resistance f across the leads d, d<1>. A subdivided coil may be used as described in Specification No. 27,168, A.D. 1904, in place of the coil i<1>, one part of the coil being effective while the battery m is discharging, and the other part while the battery is charging. In the arrangements in which a battery is used, the regulator g is adapted to change the direction of the booster field current. Either of the arrangements including the auxiliary fly-wbeel machine may be used in conjunction with any suitable arrangement of battery and reversible booster, or with either of the arrangements shown in Figs. 3 and 3<a>.