DocumentCode :
3202454
Title :
High-power compact capacitor charger
Author :
Giesselmann, Michael G. ; Vollmer, Travis T.
Author_Institution :
Center for Pulsed Power & Power Electron., Texas Tech Univ., Lubbock, TX, USA
fYear :
2009
fDate :
June 28 2009-July 2 2009
Firstpage :
918
Lastpage :
921
Abstract :
We are reporting on a new design for a compact high power Capacitor charger with a power output that far exceeds the peak power of previously reported designs. For this purpose we are evaluating parallel modular designs with separate inverters, transformers, & rectifiers and compare them with designs with a larger module size. For larger power implementations with a single inverter, transformer, & rectifier, the main challenge is the design of the inverter using parallel connected IGBT transistors and their current sharing. We are demonstrating an implementation were we are combining 2 H-Bridge inverters in parallel to feed the primary of a 100 kVA compact step-up transformer. Each H-Bridge is using current mode control to enforce current sharing. The oscillators in the current mode control IC´s for each H-Bridge are synchronized for this parallel mode of operation. This topology could be expanded to more H-Bridges. In order to reduce the high-frequency impedance and the windings losses of the step-up transformer, litz wire is used for both the primary winding and the secondary windings.
Keywords :
insulated gate bipolar transistors; invertors; power capacitors; power transformers; pulsed power supplies; rectifying circuits; transformer windings; H-Bridge inverters; IGBT transistors; apparent power 100 kVA; current mode control; current sharing; high-frequency impedance; high-power compact capacitor charger; litz wire; oscillators; parallel modular designs; rectifiers; step-up transformer; Feeds; Impedance; Insulated gate bipolar transistors; Inverters; Oscillators; Power capacitors; Rectifiers; Topology; Transformers; Wire;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Pulsed Power Conference, 2009. PPC '09. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-4064-1
Electronic_ISBN :
978-1-4244-4065-8
Type :
conf
DOI :
10.1109/PPC.2009.5386226
Filename :
5386226
Link To Document :
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