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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
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
An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction mot ...
driving a dynamo
file:DynamoElectricMachinesEndViewPartlySection USP284110.png, "Dynamo Electric Machine" (end view, partly section, )
A dynamo is an electrical generator that creates direct current using a commutator (electric), commutator. Dynamos were the f ...
through a shaft. In addition, the rotor
Rotor may refer to:
Science and technology
Engineering
*Rotor (electric), the non-stationary part of an alternator or electric motor, operating with a stationary element so called the stator
* Helicopter rotor, the rotary wing(s) of a rotorcraft ...
of the induction motor is electrically connected to the armature of the dynamo.
When the machine is running, half the power is transmitted mechanically through the shaft while the other half is transmitted electrically.
The advantage of this arrangement is that the machine can be smaller than a conventional motor-generator of the same power.
The British
British may refer to:
Peoples, culture, and language
* British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies.
** Britishness, the British identity and common culture
* British English, ...
manufacturing rights for the cascade converter were held by Bruce Peebles & Co. Ltd. of Edinburgh
Edinburgh ( ; gd, Dùn Èideann ) is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. Historically part of the county of Midlothian (interchangeably Edinburghshire before 1921), it is located in Lothian ...
.
Sources
* ''The Electrical Year Book 1937,'' published by Emmott and Company Limited, Manchester, England, pp 105-106See also
*Rotary converter
A rotary converter is a type of electrical machine which acts as a mechanical rectifier, inverter or frequency converter.
Rotary converters were used to convert alternating current (AC) to direct current (DC), or DC to AC power, before the adven ...
* Rotary phase converter
A rotary phase converter, abbreviated RPC, is an electrical machine that converts power from one polyphase system to another, converting through rotary motion. Typically, single-phase electric power is used to produce three-phase electric power ...
Electric power systems components
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