Simulation of Low-Frequency Magnetic Fields in Automotive EMC Problems

Jobava, R.; Gheonjian, A.; Hippeli, Johannes; Chiqovani, G.; Karkashadze, D.; Bogdanov, F. G.; Khvitia, B.; Bzhalava, A.

doi:10.1109/temc.2014.2325134

Cited by 26 publications

(8 citation statements)

References 28 publications

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“…If everything goes right, final manufacturing starts, and the product could get on the market. But what happens if after some time, we want this product to achieve higher EMC limits in special appliances, due to local laws, or other devices working next to it, [1]?…”

Section: Emc Problems In Long Termsmentioning

confidence: 99%

Analysing and simulating electronic devices as antennas

2021

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<p class="Abstract">Electromagnetic compatibility (EMC) is getting more and more interest with the ever-increasing adoption of electronic devices. EMC must be planned, calculated, simulated, and measured; this is necessary to ensure that the device can work in the environment of other devices and does not disturb other devices through undesired interference. In complex devices, simulation methods due to the large number of elements and complicated operations can be extremely costly and time consuming. We should consider how is it possible to reduce these costs, for example with simplifying our simulation terminology. This paper explains a general theory about using pre-measured EMC properties in simulation to predict how a complex system (containing many devices) will work. This theory is about how different radiated electromagnetic waves affect other devices. EMC standards have been developed to test and limit unintentional coupling to and from electronic devices (interference), but not developed to deal with more devices crowded in a smaller environment. If we handle the different devices as antennas, in the simulation environment we must not deal with their internal structure and operation (unless we need information of their internal structure). In this way, simulation time can be drastically reduced.</p>

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Section: Emc Problems In Long Termsmentioning

confidence: 99%

Analysing and simulating electronic devices as antennas

2021

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“…As a numerical analysis technique based on the frequency domain integral equation the MoM is a general method for solving linear equations of low frequency electromagnetic fields [25]. Essentially, the integral equation is transformed into a matrix equation represented by a series of base functions.…”

Section: Mom Calculations For Vlf Umbrella Antenna Arraymentioning

confidence: 99%

A Moment-Based Study on the Impedance Effect of Mutual Coupling for VLF Umbrella Antenna Arrays

Li¹,

Liu²,

Wu³

2017

PIER C

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Abstract-The mutual coupling between very low frequency (VLF) antenna elements is an important factor affecting the radiation performance of umbrella antenna arrays. This study evaluates the factors influencing the mutual coupling between the elements of an umbrella antenna array. We develop a mutual coupling analysis method for calculating the input impedances of a VLF antenna based on the impedance effect of mutual coupling. The radiation resistance of the VLF umbrella antenna can be obtained using numeric integral from Method of Moments (MoM) solution. Using the FEKO simulation software, a model of a trideco-tower umbrella antenna array is established. The electrical parameters of the VLF umbrella antenna array on inhomogeneous ground are calculated for both single and dual feeding modes. The impedance characteristics of the umbrella antenna arrays are also simulated for different array inter-element spacings on homogeneous ground. Representative numerical results are reported and discussed to assess the mutual coupling effect of the proposed method in comparison with full-wave simulations.

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“…During the wiring process in automotive, the cable harness always has some stochastic wiring factors of "spatial bending" and "randomness" as shown in Figure 1 [13][14][15], which bring a great challenge to the modeling of the EM illumination. Conventional modeling and simulation methods cannot easily accommodate complicated automotive system because of the difficulties in EMC modeling for cable harness [16][17][18]. Numerical simulation of the whole cable harness model requires strict conditions on calculation resource and even makes it impossible.…”

Section: Introductionmentioning

confidence: 99%

Reduced Modeling for Electromagnetic Coupling to Randomly Wiring Automotive Cable Harness

Xiao

Li²,

Zhang³

et al. 2022

ACES Journal

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The random wiring of automotive cable harness makes electromagnetic compatibility (EMC) analysis of the whole vehicle very complicated; thus, this paper proposes a simplification modeling technique to model the electromagnetic (EM) illumination on automotive cable harness. First, the stochastic process theory is applied to determine the cable route in a randomly bundling way. Then, the inductance and capacitance parameters of the cable harness at different location are established according to multiconductor transmission lines network (MTLN) theory. On this basis, the simplification modeling technique is developed to generate the electrical and geometrical parameters of the equivalent cable model. Finally, a model of shielded nine-conductor with randomly twisted and a model of unshielded nine-conductor with stochastic wiring in the vehicle are performed to validate the proposed approach by full-wave simulation. The presented method simplifies the complexity of modeling the complete cable harness significantly with a good accuracy.

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Simulation of Low-Frequency Magnetic Fields in Automotive EMC Problems

Cited by 26 publications

References 28 publications

Analysing and simulating electronic devices as antennas

Analysing and simulating electronic devices as antennas

A Moment-Based Study on the Impedance Effect of Mutual Coupling for VLF Umbrella Antenna Arrays

Reduced Modeling for Electromagnetic Coupling to Randomly Wiring Automotive Cable Harness

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