Reduced layer planar busbar for voltage source inverters

Author

Zare, Firuz ; Ledwich, Gerard F.

Author_Institution

Sch. of Electr. & Electron. Syst. Eng., Queensland Univ. of Technol., Brisbane, Qld., Australia

Volume

17

Issue

4

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

508

Lastpage

516

Abstract

Planar busbars are used widely in modern high power inverters and have been shown to provide a good way for minimizing stray inductance and overshoot voltage. Planar busbars, which consist of multilayer copper sheets and dielectric insulators, offer significant advantages such as low impedance, improved thermal characteristic and reduced system cost compared with other interconnection approaches. A common problem of hard switched inverters is stray inductance, which needs to be minimized to reduce the effect of overvoltages. This paper presents a new physical structure for a voltage source inverter with symmetrical planar busbar structure, which minimizes the variation in stray inductance for different switching states. Three-dimensional (3-D) finite element simulations and experimental tests verify the theory

Keywords

busbars; finite element analysis; interconnections; invertors; losses; overvoltage; switching circuits; 3-D finite element simulations; dielectric insulators; improved thermal characteristic; inductance; low impedance; multilayer copper sheets; overshoot voltage minimisation; overvoltages effect minimisation; reduced layer planar busbar; reduced system cost; stray inductance minimisation; switching states; voltage source inverters; Copper; Costs; Dielectrics and electrical insulation; Impedance; Inductance; Inverters; Nonhomogeneous media; Power system interconnection; Surges; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2002.800990

Filename

1016799