Planar busbar optimization regarding current sharing and stray inductance minimization

Pasterczyk, Robert; Martin, Christian; Guichon, Jean‐Michel; Schanen, Jean‐Luc

doi:10.1109/epe.2005.219745

Cited by 32 publications

(19 citation statements)

References 7 publications

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“…Second, the Sparameters can be calibrated to the exact points of the measurement, thus excluding the effects of parasitics [6]. The loop inductance L loop can be derived based on equation (14) In Fig. 18, after using two copper wires to short the capacitor tabs, L 5 , L 6 , M 56 and other mutual inductances (red dashed lines) are introduced.…”

Section: Measurement Verificationmentioning

confidence: 99%

Develop Parasitic Inductance Model for the Planar Busbar of an IGBT H Bridge in a Power Inverter

Zhang

Wang

Zhao

2015

IEEE Trans. Power Electron.

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This paper first analyzes the current paths on a planar busbar based on IGBT bridge switching states and DClink capacitor configurations. The busbar's circuit models which include both self and mutual inductances are developed based on the identified current paths. The inductance circuit models are analyzed and reduced for different switching states, transition states and DC-link capacitor configurations. Inductance and current sharing are analyzed based on circuit theory. Both simulations and measurements are conducted to verify the developed technique.

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Section: Measurement Verificationmentioning

confidence: 99%

Develop Parasitic Inductance Model for the Planar Busbar of an IGBT H Bridge in a Power Inverter

Zhang

Wang

Zhao

2015

IEEE Trans. Power Electron.

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“…4, where r w is the radius of the current-carrying conductor, and r stands for the distance to the conductor center. However, for the laminated busbar, because of its irregular structure, different current paths corresponding to different switching states and the existence of current path reuse, an inductance analysis would be difficult using traditional methods, which cannot easily calculate mutual inductance [25]. In addition, to use the mutual elimination of the magnetic field to optimize the busbar design, it is necessary to determine the total inductance.…”

Section: A Stray Inductance Analysismentioning

confidence: 99%

“…4. As known from the skin effect, when the frequency of the excitation source increases, the current tends to be distributed around the conductor outside as a circular area with a width of  , and a skin depth which can be defined as follows [25]:…”

Section: A Stray Inductance Analysismentioning

confidence: 99%

“…Therefore, the most basic requirement for busbar design is to minimize the busbar size while keeping its operation temperature under the safe operating temperature of power devices. [10], [11] and [25] hold the point that the stray inductance in high-power inverters has a large affect on the turn-off characteristic of power devices, and that the laminated busbar with its low stray inductance can suppress the turn-off voltage spike of power devices and minimize the structure without using RCD absorption circuits. In order to estimate the busbar operation temperature at the design period, it is necessary to build an accurate thermal model of a busbar in accordance with the topology of a NPC three-level inverter and commutation loops.…”

Section: Introductionmentioning

confidence: 99%

“…[2]- [6], [25] and [26] show that at present, to reduce switching loss, high-power inverters usually apply hard switching circuits and their switching rates are in s  level.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improvement on the Laminated Busbar of NPC Three-Level Inverters based on a Supersymmetric Mirror Circulation 3D Cubical Thermal Model

He¹,

Xu²,

Geng³

2016

Journal of Power Electronics

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Laminated busbars with a low stray inductance are widely used in NPC three-level inverters, even though some of them have poor performances in heat equilibrium and overvoltage suppression. Therefore, a theoretical method is in need to establish an accurate mathematical model of laminated busbars and to calculate the impedance and stray inductance of each commutation loop to improve the heat equilibrium and overvoltage suppression performance. Firstly, an equivalent circuit of a NPC three-level inverter laminated busbar was built with an analysis of the commutation processes. Secondly, on the basis of a 3D (three dimensional) cubical thermal model and mirror circulation theory, a supersymmetric mirror circulation 3D cubical thermal model was built. Based on this, the laminated busbar was decomposed in 3D space to calculate the equivalent resistance and stray inductance in each commutation loop. Finally, the model and analysis results were put into a busbar design, simulation and experiments, whose results demonstrate the accuracy and feasibility of the proposed method.

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Mechanical System

2023

Design of Three‐Phase AC Power Electronics Converters

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Planar busbar optimization regarding current sharing and stray inductance minimization

Cited by 32 publications

References 7 publications

Develop Parasitic Inductance Model for the Planar Busbar of an IGBT H Bridge in a Power Inverter

Develop Parasitic Inductance Model for the Planar Busbar of an IGBT H Bridge in a Power Inverter

Improvement on the Laminated Busbar of NPC Three-Level Inverters based on a Supersymmetric Mirror Circulation 3D Cubical Thermal Model

Mechanical System

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