Calculation and measurement of the capacitance between stator frame and slot conductors and its influence on common-mode current

Vukotić, Mario; Miljavec, Damijan; Voncina, D.

doi:10.1109/cpe.2016.7544196

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…The effect of common mode currents on the radiated emissions has been described in [10]. The winding to stator coupling capacitance

{C}_{\text{ws}}

is the dominant coupling element of the motor for common mode currents [15]. Accordingly, this coupling path is essential for the radiated emissions.…”

Section: Theory Of the Influence Of The Different Drive Parameters On...mentioning

confidence: 99%

“…Accordingly, the coupling paths for the common mode currents are essential for the understanding of the radiated emissions. These coupling paths include the inverter [11,12], the motor cable [13,14], and the motor itself [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Other couplings, such as the wire‐to‐wire coupling (intra‐winding capacitance), the winding‐to‐winding coupling (inter‐winding capacitance), and the coupling of the winding and the layout also exist. However, the capacitance

{C}_{\text{ws}}

is the dominant coupling element because it provides the main coupling path of the motor for the common mode currents [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of different stator winding topologies for fractional horse power brushless direct current motors

Krall

Muetze

2021

IET Electric Power Appl

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The number of auxiliary electric drives can exceed 100 for luxury cars. Due to their everincreasing prevalence, the electromagnetic emissions (EME) of these drives are becoming increasingly important. This work explores the influence of four different stator winding topologies on the electromagnetic emissions and the efficiency performance of fractional horsepower (FHP) brushless direct current (BLDC) drives. Two monofilar windings with a wire diameter of 0.15 and 0.27 mm, an untwisted bifilar winding, and a twisted bifilar winding are inspected. The parasitic stator to winding coupling capacitance is the motor's main source for common mode currents and thus, for radiated emissions. A three-media capacitance model is introduced to allow estimating this coupling path in the design phase of the motor. Twisting the phases of a bifilar winding reduces the excitation of this path. Therefore, the radiated emissions are reduced by 5 dB μV=m . The stator winding topology also affects the winding resistance and thus the efficiency. The monofilar winding with a wire diameter of 0.27 mm shows the lowest level of consumed power, followed by the monofilar winding with a wire diameter of 0.15 mm, the untwisted bifilar winding and the twisted bifilar winding.

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“…The effect of common mode currents on the radiated emissions has been described in [10]. The winding to stator coupling capacitance

{C}_{\text{ws}}

is the dominant coupling element of the motor for common mode currents [15]. Accordingly, this coupling path is essential for the radiated emissions.…”

Section: Theory Of the Influence Of The Different Drive Parameters On...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

{C}_{\text{ws}}

is the dominant coupling element because it provides the main coupling path of the motor for the common mode currents [15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of different stator winding topologies for fractional horse power brushless direct current motors

Krall

Muetze

2021

IET Electric Power Appl

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“…[5,6]. Among all these elements, the highest capacitance values are normally associated to the coupling between winding and stator iron [7,8]. This, defines the connection winding-frame-ground as the main current leakage path inside the machine.…”

Section: Fabien Chauvicourtmentioning

confidence: 99%

“…The evaluation of slot parasitic capacitances by using FE has already been studied in the past by several authors [7], [11][12][13]. For machines with a small number or turns, the analysis can be detailed by computing single conductor capacitances [14].…”

Section: Fabien Chauvicourtmentioning

confidence: 99%

Numerical Computation of Parasitic Slot Capacitances in Electrical Machines

Sarrio

Marțiș

Chauvicourt

2020

2020 International Conference and Exposition on Electrical and Power Engineering (EPE)

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Parasitic capacitive couplings in the machine slots act as an undesired leakage current path. This paper presents a method to compute lumped capacitance values and their distribution through 2D electrostatic finite-element simulation. The method is applied to a real machine slot with double layer. Turn-to-iron and inter-turn capacitive couplings show that negligible values appear between distant turns and turns not facing the slot walls and the iron. This reduction of the matrix size can be exploited on further high-frequency equivalent circuit representation. In addition, the influence of the insulation geometry and characteristics is studied.

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Overview of shaft voltage and bearing current mitigation methods applied on the victim machine

Teshale,

Biru

2023

Electr Eng

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Calculation and measurement of the capacitance between stator frame and slot conductors and its influence on common-mode current

Cited by 5 publications

References 8 publications

Analysis of different stator winding topologies for fractional horse power brushless direct current motors

Analysis of different stator winding topologies for fractional horse power brushless direct current motors

Numerical Computation of Parasitic Slot Capacitances in Electrical Machines

Overview of shaft voltage and bearing current mitigation methods applied on the victim machine

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