ELECTROMAGNETIC COMPATIBILITY ((EMC)) analysis around High Voltage (HV) cables is one of the important research problems, which several standards are published. In this paper, field simulation of HV cable space based on finite element method (FEM) is proposed to identify cable shielding effectiveness for a permitted distance of HV cable and communication cable proximity. FEM simulation method is performed for four situations including shielded cable or simple cable (cable with or without shield) for each type of HV and communication cable in losses environment. As authors are aware there is no research report for the amount of proximity distance for HV cable and communication cable in losses spaces in spite of partial approach in cabling route. Finally, simulation result is evaluated by comparison with ICNIRP standard constraints. FEM simulation results are validated by FDM based simulation software(CST); Also ELECTROMAGNETIC field measurement for one-core medium voltage voltage labratory. Both of them illustrates the authentication of FEM modeling of and simulation results of the investigation.

ELECTROMAGNETIC COMPATIBILITY ((EMC)) is an important subject in electronics and communications. The proper performance of a system is very much dependent on meeting (EMC) requirements. This is more important in space systems. In this paper, the first part of a two-part text about (EMC) in space systems is presented. The importance of the subject and the necessity to take the (EMC) considerations into account from the very beginning phases of the system design is discussed. The three main (EMC) subject areas: sources of noise, noise transfer paths, and immunity methods are mentioned. The most important global military and space (EMC) standards are presented. System level actions and design considerations are also mentioned. Theses include: grounding methods, shielding and related topics, such as shielding effectiveness, shield resonance, absorbers, (EMC) gaskets and issues regarding wirings, cables, and connectors.

The higher frequency transient signals generated as a result of a power system fault or disturbance provide the basis for an alternative approach to power system containing connectors and cables result in unsuitable operation of the system. However one major challenge is the need to ensure that the transients to be neutralized by ELECTROMAGNETIC COMPATIBILITY ((EMC)) issues and cabling routes. This paper proposes novel method for optimal cable routings and connectors; a combinatorial design Algorithm, to choose the best path when two or more physical paths are available. The best path from (EMC) point of view can be chosen based upon various criteria such as monetary cost minimization, voltage drop and quality (ELECTROMAGNETIC COMPATIBILITY) parameters.This paper initially provides a numerical 2D and 3D resolution of the problems of radiation generated by current sources. The approach is based on the finite element method (FEM) associated with absorbing boundary conditions. The presented model makes it possible to consider wave propagation and their effects in heterogeneous mediums in transient which can be applied in (EMC) for the simulation of radiation. First, the formulations of the ELECTROMAGNETIC problem are detailed. The simulation results are used for the cabling routes with respect to undesirable field distribution in the specified regions. Finally by the use of AHP optimal routes for cabling based upon the above mentioned criteria are chosen. The proposed method is successfully implemented on two different types of power systems, "high voltage substation and current injection system".

Ensuring the correct operation of electrical equipment in tandem is a critical engineering concern, particularly when addressing the issue of ELECTROMAGNETIC COMPATIBILITY ((EMC)). In satellite systems, (EMC) considerations must be addressed from the initial design phases, as methods such as shielding or the addition of suitable filters are not always feasible or optimal. This article examines the necessity of shielding the LVDS (Low-Voltage Differential Signaling) bus cabling of the satellite's camera, which is located on the satellite's exterior. The study begins with the simulation of the LVDS bus cabling to assess the need for shielding, and the results are subsequently validated through ELECTROMAGNETIC COMPATIBILITY testing. The research findings indicate that, while shielding the LVDS bus cable of the camera can improve protection by a factor of ten thousand in the worst-case scenario during Radiated Emission (RE) and Radiated Susceptibility (RS) tests, the low level of interference radiation in RE (approximately E7–8 V/m or E4/1–11 A/m) and the small amplitude of the interference signal in RS (approximately 0.001 V) suggest that shielding is not necessary. Shielding would only increase the satellite's mass and complicate the connection without significant benefits. It is evident from this study that simulating Conducted Emission (CE) and Conducted Susceptibility (CS) tests in subsequent design phases is essential to ensure comprehensive (EMC) assessment.

The parasitic parameters of an IGBT power module cause various problems, especially for ELECTROMAGNETIC COMPATIBILITY ((EMC)) concerns. The high-variations in voltage and current produced by the inductances/capacitances near switches in the transient process are the main sources of high-frequency ELECTROMAGNETIC interference (EMI). To overcome the problems, the parasitic parameters of the module should be accurately characterized. In this paper, a precise detailed model of a commercial half-bridge IGBT module is presented. It includes the parasitic inductances of leads, bond wires, DBC plates, and the parasitic capacitances of the module and IGBTs. The new simplified analytical equations to calculate the partial inductance and parasitic capacitance are proposed and compared with ANSYS Q3D results. To evaluate the accuracy of the model, all the parameters are also derived from a two-port measurement-based parasitic extraction method. The results show an acceptable match between the simulated and experimental values. Finally, the proposed model is implemented by state-space dynamic coupling in ANSYS Simplorer circuit simulator, and a double-pulse test circuit is used to verify the model. By comparing the simulated current and voltage waveforms with experiment, it is proved that the proposed model is applicable to simulate the switching transients for (EMC) study.

The transverse ELECTROMAGNETIC (TEM) cells are used for ELECTROMAGNETIC interference/COMPATIBILITY (EMI/(EMC)) experiments of the small RF devices in a laboratory environment. The standard ELECTROMAGNETIC fields generated in the shielded environment of a TEM cell can also be used for calibration of the RF field probes. In this paper, a 50 W open TEM cell is designed and fabricated to generate standard ELECTROMAGNETIC fields from 1 MHz up to 1 GHz. To overcome the impedance mismatch and improve the voltage standing wave ratio (VSWR) along the TEM cell, a new piecewise linear tapering method is proposed for the inner conductor of the cell. The resulted matching conditions of the new tapering method are presented through some numerical simulations and measurements and compared to those of the conventional simple linear tapering.

Explicit and hybrid equivalent models of bulk current injection probe are reviewed, these models don’t take slot and ferrite dielectric constant capacitive effects into account, which caused the appearance of negative values in the real part of ferrite permeability spectra when extracting it from measured input impedance of the probe. In this paper, these capacitances are calculated using CST Electrostatic Solver, then its effect on the probe equivalent series impedance, voltage transfer ratio, and the core predicted permeability are evaluated. The evaluation shows that introducing these capacitances cancels the abnormal negative permeability resulting in the model, without affecting the model validation.

This paper presents novel active filter for mitigation ELECTROMAGNETIC interference (EMI) and other adverse effects of pulse width modulation (PWM) inverter-fed AC motor system. An active filter proposed and devised for this system is characterized by sophisticated connection of two small separate filters, capable of mitigating all the adverse effects. This paper provides high frequency models of PWM inverter, rectifier, DC link, induction motor and long cable. The configuration and design procedure of the proposed filter is presented. The whole system is modeled and simulated by commercially available simulation software. A practical system with EMI measurement system have been suggested to test designed equipment ability in emitting EMI and other adverse effects to comply with ELECTROMAGNETIC COMPATIBILITY ((EMC)) standards. The simulation results are verified by experimental results, which show the reduction characteristics of the shaft voltage, bearing current, common mode current, leakage current and EMI.

High voltage chargers are being used in the equipments such as electrical vehicles, uninterruptible power supplies and aircrafts. The converter introduced here is based on bi-directional boost topology. The output voltage of batteries set is larger than the input source voltage amplitude, and this converter can transfer the energy both from the source to the batteries bank and vice versa. Input source voltage is sine wave and the output voltage is DC. Both conversion of AC-to-DC and DC-to-DC is performed in one stage and the control scheme of switches is based on hysteric control method to achieve the unity power factor. One can use the electrical equations presented here to define the converter and (EMC) filter elements value. Finally, simulation results performed on a typical converter show the control method authenticity and effectiveness of the analyses presented here. Also some suggestion for the future works is proposed.