Cascade converter

A cascade converter is a type of motor-generator which was patented in 1902 by J. L. la Cour and O. S. Bragstad.

It consists of an induction motor driving a dynamo through a shaft.

In addition, the rotor of the induction motor is electrically connected to the armature of the dynamo.

The advantage of this arrangement is that the machine can be smaller than a conventional motor-generator of the same power.

The British manufacturing rights for the cascade converter were held by Bruce Peebles & Co. Ltd. of Edinburgh.