DocumentCode :
3240358
Title :
A simple inductorless AC-line voltage autotransformer
Author :
Kosev, Josif ; Arsov, Goce L.
Author_Institution :
Fac. of Electr. Eng., Univ. SS Cyril & Methodius of Skopje, Macedonia
Volume :
2
fYear :
1999
fDate :
1999
Firstpage :
584
Abstract :
A very simple AC-line voltage autotransformer based on switched capacitors (SC) is presented. Compared to classical autotransformers or various AC voltage stabilisers it is lightweight and small. Various configurations for SC-autotransformers and possible different switching algorithms are pointed out. The theoretical background for the simplest SC-autotransformer is developed from basic circuit theory. Its characteristics are investigated mathematically and numerically. Designer´s guidelines are deduced and a prototype SC-autotransformer is designed. The autotransformer and minimum control circuitry for its operation are constructed, and the basic characteristics are measured. The theoretical and measured waveforms agree very well. By controlling the charging/discharging intervals of the capacitors-the output voltage is controlled. A special characteristic of the simplest SC-autotransformer is its capability to operate either in step-up or step-down mode using the same configuration
Keywords :
autotransformers; capacitors; switching; voltage control; charging/discharging intervals control; circuit theory; inductorless AC-line voltage autotransformer; output voltage control; step-down mode; step-up mode; switched capacitors; switching algorithms; Circuit theory; DC-DC power converters; Guidelines; Home appliances; Surges; Switched capacitor circuits; Switches; Switching circuits; Uninterruptible power systems; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics, 1999. ISIE '99. Proceedings of the IEEE International Symposium on
Conference_Location :
Bled
Print_ISBN :
0-7803-5662-4
Type :
conf
DOI :
10.1109/ISIE.1999.798677
Filename :
798677
Link To Document :
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