Current distribution in shielded cable-connector systems for power transmission in electric vehicles

Frei, Stephan; Mushtaq, Abid; Hermes, Katharina; Nowak, Robert J.

doi:10.1109/isemc.2018.8393908

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…In area 4 (red), it is greater than 2 MHz, which is mainly determined by the small hole inductance and braided inductance. As the frequency increases, the transfer impedance value continues to increase [14,15].…”

Section: Analysis Of Transfer Impedance Characteristic Curvementioning

confidence: 99%

Shield Reliability Analysis-Based Transfer Impedance Optimization Model for Double Shielded Cable of Electric Vehicle

Shi

Jia

et al. 2021

Mathematical Problems in Engineering

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Due to the high-voltage and high-current operating characteristics of the electric drive system of electric vehicles, it forms strong electromagnetic interference during the working process. The shielding effectiveness of the high-voltage connection cable that connects the components of the electric drive system is directly related to its electromagnetic interference emissions. Therefore, the modeling and analysis of the shielding effectiveness of the connection cable is very important for the development of a connection cable with good shielding effectiveness. Firstly, the transfer impedance value representing the shielding effectiveness of the shielded cable is analyzed, and the difference between the single-layer shield and the double-layer shield cable is compared. The influence of double-layer shielded high-voltage connection cables commonly used in electric vehicles on the shielding layer DC resistance and keyhole inductance is clarified. Secondly, the transfer impedance optimization model ZT_D-Desmoulins is obtained by combining with the single-layer shielded cable Desmoulins model and considering the influence of shielded layer DC resistance and keyhole inductance. Finally, three double-layer shielded cables of different types were selected for the triaxial test. The error rates of the test data and the ZT_D-Desmoulin optimization model are all lower than 20% in each frequency band, which verified the correctness, universality, and great engineering application value of the optimization model.

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Section: Analysis Of Transfer Impedance Characteristic Curvementioning

confidence: 99%

Shield Reliability Analysis-Based Transfer Impedance Optimization Model for Double Shielded Cable of Electric Vehicle

Shi

Jia

et al. 2021

Mathematical Problems in Engineering

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“…Shield current stress calculation requires a high-fidelity cable model in the frequency range of the current ripple following [1]. The modelling approach used considers two variable design parameters, cable geometry and ground resistance, encompassing grounding resistance (R ue ) and vehicle ground resistance (R GND ).…”

Section: Cable Modelmentioning

confidence: 99%

“…The real vehicular system model contains three subsystem models. The traction inverter model to reproduce the ripple current source in the vehicle followed [1]. Input for the drive-train configuration in the inverter model included the actual mechanical torque, machine speed, modulation index, and DC voltage.…”

Section: Analytical Modelmentioning

confidence: 99%

“…A cost-and design-relevant property of the shield and its connector system is the current stress resistance. Data sheets of an HV cable and connector define only a constant root-mean-square (RMS) value for the shield current stress resistance, typically 10 A [1]. Due to the switching operation of power transistors in the traction inverter, differential mode (DM) ripple current is emitted into the HV system in the frequency range of kHz] [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Voltage ripple issues are also covered by automotive standards, such as in [14]. Many researchers [1,6,10,[15][16][17][18] have examined the properties of shielding and shield current in automotive HV systems. They examined the AC cabling between the traction inverter and the electric machine, in the 3-phase AC system.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Shield Current in Automotive High Voltage Systems

Pazmany¹,

Fodor

Bäker³

2021

WEVJ

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In automotive high voltage (HV) systems, the switching operation of a power electronic converter causes current and voltage ripple in the frequency range of [10 Hz–150 kHz]. Automotive system engineering provides requirements that define the behaviour of HV components in that frequency range. Shielded HV cables must stand induced current in the frequency range of the ripple. One of the relevant requirements is the maximal current stress of the shielding. Several individually shielded cables are used in automotive HV systems, and these shields influence differential mode disturbance currents, such as the ripple current from the traction inverter. In this work, we provide a model and an analysis of shielded cables integrated into an automotive HV system in relation to system-level design parameters. To fill the gaps of existing research, we focused on two questions: How do design parameters influence the shield current value in the frequency range of the current ripple in a vehicle, and how should a shield and connector system be designed with respect to shield currents over the life-time? We applied analytical and simulative solutions to these problems through a co-simulation approach on the architecture of a real vehicle. The presented approach extends existing research by integrating simulations and vehicle measurements to life-time prediction. Moreover, the proposed methods enable the replacement of the state-of-the-art constant 10 A requirement to a driver profile based predicted shield current requirement on individually shielded HV cables in battery electric vehicles (BEV).

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Analytic Calculation of Shielding Effect of Vehicular Body on Low Frequency Magnetic Fields Induced by High Voltage Cables

Henke

Nowak

Frei

2018

2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE)

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Current distribution in shielded cable-connector systems for power transmission in electric vehicles

Cited by 4 publications

References 6 publications

Shield Reliability Analysis-Based Transfer Impedance Optimization Model for Double Shielded Cable of Electric Vehicle

Shield Reliability Analysis-Based Transfer Impedance Optimization Model for Double Shielded Cable of Electric Vehicle

Simulation of Shield Current in Automotive High Voltage Systems

Analytic Calculation of Shielding Effect of Vehicular Body on Low Frequency Magnetic Fields Induced by High Voltage Cables

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