Title :
Normalized (pulse-) charging
Author :
Olsson, Bengt G.
Author_Institution :
Adelsfors AB, Saltsjo-boo, Sweden
Abstract :
The current from battery chargers with `medium´ ripple attenuated by leakage-field-transformers (LTs) is analyzed. LTs are wound with primary and secondary windings spaced apart on a bobbin with 2 chambers. Type UI-cores have a higher leakage inductance Ls than EI-cores, and Ls may be increased 100% by reversing one bobbin (and by using different number of turns per volt). LTs are controlled by triacs or thyristors. Their line current is `softer´ and their voltage droop is higher than usual. At the end of charging their current ripple is of the same magnitude as an ordinary rectifier with a filter choke
Keywords :
battery chargers; bobbin; current ripple; leakage inductance; leakage-field-transformers; line current; normalized pulse charging; primary windings; secondary windings; thyristors; triacs; voltage droop; Batteries; Filters; Inductance; Inductors; Manufacturing; Rectifiers; Testing; Thyristors; Voltage control; Wounds;
Conference_Titel :
Telecommunications Energy Conference, 1992. INTELEC '92., 14th International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0779-8
DOI :
10.1109/INTLEC.1992.268389
