Bus Bar Systems'04

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© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

LAMINATED BUS BAR

Presented byDouglas C. Hopkins, Ph.D.

University at Buffalo332 Bonner Hall, Buffalo, NY 14620-1900

607-729-9949, fax: 607-729-7129www.DCHopkins.Com

The authors thank ELDRE CORPORATION

for supplying photos and descriptions

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

Laminated Bus-Bar

• A polymer, such as epoxy, glues together thick conductor bars while providing electrical isolation. The bars can be free-floating laminated interconnects or, if sufficiently thick, be the metal carrier. Vias between layers are metal posts or fasteners placed through drilled or stamped holes. These are used in high current systems and can accommodate very large components.

• Bus Bars are used in power engineering, laminated bus bars are used in power electronics.

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

Paradigm shift

Image a printed circuit board with multi-level interconnects. Imagine the the glass-epoxy is dissolved away and the conductors are enlarged with thin dielectric films separating conductors. Described is the capability of multi-level laminated bus bar systems.

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

Inductive Effects (Conductor Types)Design Aspects for Inverters

with IGBT High Power Modules

Dr.-Ing. Th. Schütze , eupecGmbH & Co KG, Warstein,

Germany

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

ABS brake component

3 conductor, 2 layer bus bar 5,000 / week production

Bus Bar - ABS Brake

With permission from Eldre Corporation

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

EUPEC Power Module

Design Aspects for Inverters with IGBT High Power

ModulesDr.-Ing. Th. Schütze , eupecGmbH & Co KG, Warstein,

Germany

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

Electric Vehicle Bus Bars

Coil for an inductive charging system

Mylar insulation with glass (FR-4) reinforced Hipot tested under water

Bus Bar - Electric Vehicle

With permission from Eldre Corporation

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

2nd generation inverter design

Laminated Construction

Bus Bar - Electric Vehicle

With permission from Eldre Corporation

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

Power Module Interconnect

Design Aspects for Inverters with IGBT High Power

ModulesDr.-Ing. Th. Schütze , eupecGmbH & Co KG, Warstein,

Germany

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

Electric boost for turbo

Open design - no outside insulation

Capacitors soldered directly to the bus

Designed for high volume production

Bus Bar - Electric Vehicle

With permission from Eldre Corporation

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

Electric Vehicle MOSFET motor drive using low inductance PC board mounted

bus bars.

Bus Bar - Electric Vehicle

With permission from Eldre Corporation

© 2006, D. C. Hopkins DrHopkins@DCHopkins.Com

MOSFET inverter

28VDC to 3ph AC

1000 Amp peak

Designed for 1000/week production

Bus Bar - Electric Vehicle

With permission from Eldre Corporation