cycloconverter


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cycloconverter

[¦sī·klō·kən′vərd·ər]
(electricity)
A device that produces an alternating current of constant or precisely controllable frequency from a variable-frequency alternating-current input, with the output frequency usually one-third or less of the input frequency.
References in periodicals archive ?
In the direct power converter category, forced-commutated Matrix Converter (MC) stands alongwith the cycloconverter.
5 Hz can be used with evaluations of cycloconverter or when a motor is started.
It's advanced industrial OHV four-stroke engine, makes it exceptionally durable, and it features CycloConverter [TM] technology offering stable power output equal in quality to automatic voltage regulator (AVR) generators but dramatically lighter at only 68.
The LCC main pump is driven by a 14,000-horsepower (10,440-kW) 24-pole synchronous electric motor with a cycloconverter control system for providing the variable-drive frequency.
For the largest of the belt sections, Siemens is supplying two gearless 6,000kW drive systems comprising a low-speed synchronous motor and a Sinamics SL150 cycloconverter.
5 MW ring-motor, cycloconverter transformers, excitation transformer, cycloconverter and the ABB control system for the mill and its auxiliaries.
Also, developments in closed-loop control the heart of the gearless drive system - make it possible to use a cycloconverter of very simple configuration and yet achieve excellent torque variation with negligible harmonics.
5-MW ring motor, cycloconverter transformers, excitation transformer, cycloconverter, and ABB control system for the mill and its auxiliaries.
In addition, the order comprised a 220 kilovolt (kV) gas insulated switchgear, harmonic filters and power factor correction and three containerized E-houses hosting cycloconverter equipment, motor control centers and control panels.
The synchronous motor is fed by a cycloconverter that dispenses with brushes and the commutator of conventional electric motors and their associated gears, drive shafts and lubrication systems.
Siemens said the Sinamics cycloconverters that will be installed in the new line are characterized by low switching losses and high efficiency, and the integrated drive and cycloconverter system will contribute to an expected equipment availability rate of more than 99%.