Longitudinal end effect in cylindrical induction MHD machines

I. R. Kirillov

Abstract
The solution of the problem of determining the electromagnetic fields, powers, and efficiency of a cylindrical induction MHD machine with consideration of the finite length of the winding and magnetic conductor is solved in a one-dimensional formulation. The characteristics are calculated for various methods of suppressing end effects in a wide range of variation of the magnetic Reynolds number, slip, number of poles of the exciting winding, and relative pole excess. It is shown that the characteristics of an ideal machine can be obtained on providing a zero electrical conductivity outside the active zone and with appropriate selection of the compensation currents at its boundaries. Approximate expressions convenient for engineering calculations are obtained and the limits of their applicability are indicated.