Title :
Asymmetrical current generator for electrochemical technology
Author :
Baginsky, B. ; Grebennikov, V. ; Obraztsov, S. ; Ogorodnikov, D. ; Yaroslavtsev, E.
Author_Institution :
Tomsk Polytech. Univ., Russia
fDate :
26 Jun-3 Jul 2001
Abstract :
A current source of asymmetrical quasi-sinusoidal shape with continuously adjustable parameters is designed: average value of a current of the maximum half-wave is 5-16 A, frequency is 20-2000 Hz, asymmetry of half-waves is 6-11. Nominal load power is 2.5 kW and maximum peak-to-peak current ripple is no more than 30% from amplitude. With the use of the given source, experiments on the extraction of metallic gallium from the dust of a gas purifier were conducted. As a result of the conducted research, we obtained metallic gallium with degree of purity 99.9%, the degree of extraction was compounded 80-82% with alkali liquor in chambers of a diaphragm electrolytic furnace which is the load of the source. The data results are obtained at a current intensity 15 A, asymmetry 7-8 and frequency 461±1 Hz
Keywords :
electrochemical devices; materials preparation; modulation; power supplies to apparatus; 2.5 kW; 20 to 2000 Hz; 5 to 16 A; Ga; asymmetrical current generator; asymmetrical quasi-sinusoidal shape; continuously adjustable parameters; diaphragm electrolytic furnace; electrochemical technology; gas purification; half-wave shaper; metallic Ga extraction; modulation current driver; Charge coupled devices; Frequency; Inductors; Pulse circuits; Pulse modulation; Pulse shaping methods; Sensor systems; Space vector pulse width modulation; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Science and Technology, 2001. KORUS '01. Proceedings. The Fifth Russian-Korean International Symposium on
Conference_Location :
Tomsk
Print_ISBN :
0-7803-7008-2
DOI :
10.1109/KORUS.2001.975109
