A contactless rotary frequency changer
Abstract
The design and the principle of operation of a contactless rotary frequency changer for converting commercial-frequency alternating current to stabilized three-phase current with a higher frequency (400 Hz or more) are presented. The frequency changer consists of a synchronous motor with a rotating rectifier and two asynchronous electric machines with phase rotors, one of which has an adjustable magnetic shunt in the stator. It is shown that the use of an adjustable magnetic shunt makes it possible to obtain a stable output voltage, while the use of toroidal three-phase windings reduces the amount of the winding wire as well as the dimensions and weight of the unit.
- Publication:
-
Tekhnicheskaia Elektrodinamika
- Pub Date:
- October 1984
- Bibcode:
- 1984TekEl.......75K
- Keywords:
-
- Current Converters (Ac To Dc);
- Frequency Converters;
- Helical Windings;
- Synchronous Motors;
- Systems Engineering;
- Volt-Ampere Characteristics;
- Electronics and Electrical Engineering