Low impedance bus for power electronics

Details Low impedance bus for power electronics Low impedance bus for power electronics

H - Electricity

01

R

H01R 25/14 (2006.01) H01L 23/52 (2006.01) H01L 25/11 (2006.01) H02G 5/00 (2006.01) H02M 7/00 (2006.01)

Patent

CA 2113172

2113172 9301648 PCTABS00019 A low impedance, high power bus can be applied as a high power supply bus between a constant voltage source (50) and a plurality of switching cells (64, 66) positioned at varying locations along the bus, and as branch bus for the switching cells. The high power bus includes two conductive bars (58, 60) positioned so that the current flow therethrough is balanced (equal and opposing), and the magnetic field is substantially confined between the bars. The bus includes a dielectric positioned between the conductive bars (74, 76, 78) that extend along the power supply bus, so that a main bus is created by the combination of the AC extension bars and the DC power supply bus, and the sum of the currents in the bars is approximately zero at all locations in the bus. The power bus lessens or even obviates the need for the snubber networks commonly used to reduce transients, and reduces the strength of magnetic fields and electric fields that could otherwise interfere with neighboring electrical components.

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