The non-linear differential equations describing the
transient behaviour of a group of induction motors are developed
from the equations for a single machine. These equations enable
the behaviour of each machine in the group to be investigated,
either when the complete group is connected to a stiff supply
or when the supply is weak and the machine behaviour is interactive. A numerical solution of the equations using a digital
computer is used to predict the transient currents and torques
of a 0.75 kW/1.5 kW motor group and of a 0.75 kW/1.5 kW/2.25 kW
motor group, and the results obtained are compared with experimentally
obtained results. [Continues.
