GB892660A - Improvements in or relating to electrical generators - Google Patents

Abstract

892,660. Generating electricity by forcing fluid through magnetic fields. BROWN, BOVERI & CIE A.G. Aug. 12, 1960 [Aug. 12, 1959], No. 27982/60. Class 35. In a generator including means for producing a stream of ionized gas through a channel defined at least in part by spaced currentcarrying electrodes E1, E2 and means for producing a magnetic field H penetrating the channel perpendicular to the gas stream direction so as to cause a load current to pass in the gas between the electrodes during operation of the generator, the magnetic field created by the load current in the electrodes and which disturbs the current distribution is compensated by the provision of conductor leads Z1, Z2, perpendicular to both field H and the gas flow, through which flows a current equal and opposite to the load current. Iron core A and excitation windings B1 and B2 fed with direct current produce the field H. The channel lies in the air gap of A. Lead Z1 forms one generator terminal and the two part leads Z2<SP>1</SP> and Z2<SP>11</SP> combined to form the other, half the current i of the generator being carried by each part of Z2, thus compensating exactly the load current flowing in the gas. C1 and C2 are insulating plates. In a modification (Fig. 3, not shown) the current from electrode E2 flows through a lead to another generator or load part X1, divides into two and passes via conductors Z2<SP>1</SP> and Z2<SP>11</SP> through the field, returning through a load X2 to electrode E1. In Fig. 4 the leads are arranged in a symmetrical manner up to the middle of the electrode spacing when they pass outwards through the pole shoes of core A.