Title :
Cycloconverter operation under a new scalar control algorithm
Author :
Roy, G. ; April, G.-E.
Author_Institution :
Dept. of Electr. Eng., Ecole Polytech. de Montreal, Que., Canada
Abstract :
A thorough analysis is conducted of a novel scalar control method for the operation of direct frequency changers using bidirectional switches that operate at high switching frequencies. The method uses the instantaneous voltage ratio of specific input phase voltages to generate the active and zero states of the various switches. A voltage transfer ratio as high as 0.87 is obtained under synchronous and asynchronous operation with a conventionally connected three-phase load. Moreover, the converter operation can be set to produce almost any power displacement factor, independently of load power factor
Keywords :
cycloconvertors; asynchronous operation; bidirectional switches; cycloconvertors; direct frequency changers; input phase voltages; instantaneous voltage ratio; load power factor; power displacement factor; scalar control method; synchronous operation; voltage transfer ratio; Digital-to-frequency converters; Energy storage; Frequency conversion; IEEE members; Matrix converters; Reactive power; Switches; Switching frequency; Video recording; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1989. PESC '89 Record., 20th Annual IEEE
Conference_Location :
Milwaukee, WI
DOI :
10.1109/PESC.1989.48511
