Severe weather events are responsible for hundreds of fatalities and millions of euros of damage every year on the Mediterranean basin. Lightning activity is a characteristic phenomenon of severe weather and often accompanies torrential rainfall, which, un ...

Amer Geophysical Union2017

Emergence of Friedmann Equation of Cosmology of a Flat Universe from the Time-Energy Uncertainty Principle

Farhad Rachidi-Haeri

Friedmann equation of cosmology is based on the field equations of general relativity. Its derivation is straight-forward once the Einstein’s field equations are given and the derivation is independent of quantum mechanics. In this paper, it is shown that ...

2017

Are Standardized Lightning Current Waveforms Suitable for Aircraft and Wind Turbine Blades Made of Composite Materials?

Farhad Rachidi-Haeri, Marcos Rubinstein, Anastasios Vassilopoulos, Aleksandr Smorgonskii

The use of sensitive electronics in avionics and wind generation systems, as well as the introduction of lower-conductivity composite materials make it important to ensure adequate lightning testing of airplanes and wind turbines. Evidence exists suggestin ...

Institute of Electrical and Electronics Engineers2017

Revisiting the Calculation of the Early-Time HEMP Conducted Environment

Farhad Rachidi-Haeri, Gaspard Lugrin, Nicolas Mora Parra

2017

Using Electromagnetic Time Reversal to Locate Faults in Transmission Lines: Definition and Application of the Mirrored Minimum Energy Property

Farhad Rachidi-Haeri, Mario Paolone, Reza Razzaghi, Zhaoyang Wang, Asia Codino

This paper presents an application of the Electro-magnetic Time Reversal (EMTR) in changing media to identify the fault location along a single-conductor transmission line. It is shown that the time-reversed quantities exhibit a property, called Mirrored M ...

2017

Location Accuracy Evaluation of ToA-Based Lightning Location Systems Over Mountainous Terrain

Farhad Rachidi-Haeri, Marcos Rubinstein, Dongshuai Li, Wolfgang Schulz

In this paper, we analyze the location error of time of arrival (ToA)-based lightning location systems (LLSs) caused by propagation effects over mountainous terrain around the Santis tower located in the Swiss Alps. The study is based on a full-wave three- ...

Amer Geophysical Union2017

On the Measurement of the Grounding Impedance of Tall Wind Turbines

Farhad Rachidi-Haeri, Marcos Rubinstein, Aleksandr Smorgonskii, Nicolas Mora Parra

2017

Locating Lightning-Originated Flashovers in Power Networks using Electromagnetic Time Reversal

Farhad Rachidi-Haeri, Mario Paolone, Gabriel Gérard André Antonini, Reza Razzaghi, Marco Scatena

2017

On the Use of Magnetic Current Loop Source Model in Lightning Electromagnetics

Farhad Rachidi-Haeri, Damir Cavka

2017

An Alternative Method for Locating Faults in Transmission Line Networks Based on Time Reversal

Farhad Rachidi-Haeri, Mario Paolone, Reza Razzaghi, Zhaoyang Wang, Asia Codino

We present an alternative method based on the time-reversal process to locate faults in transmission line networks. The proposed procedure considers different media for the forward and the backward propagation phases. Specifically, the transverse branch re ...

Institute of Electrical and Electronics Engineers2017

Time Marching Simulation of Signal Propagation in Power Lines Loaded with Non-Linear devices

Farhad Rachidi-Haeri

2017

The use of a potential lightning index in multi-microphysical cloud-resolving simulations of a V-shape convective system

Farhad Rachidi-Haeri, Martina Lagasio

2017

Stable Simulation of Multiport Passive Distributed Networks Using Time Marching Method

Farhad Rachidi-Haeri, Akiyoshi Tatematsu

In this paper, we present a stable method for simulating passive distributed networks connected to linear and nonlinear devices using the time marching (TM) method. The method is based on the use of the Z-transform for analyzing and obtaining the TM equati ...

Institute of Electrical and Electronics Engineers2017

Mixed-Potential Integral Equation for Full-Wave Modeling of Grounding Systems Buried in a Lossy Multilayer Stratified Ground

Farhad Rachidi-Haeri, Keyhan Sheshyekani, Hamidreza Karami

The paperpresents a comprehensive approach for full-wave modeling of grounding systems buried in a multilayer stratified ground. The dyadic spectral domain Green's function associated with the multilayer stratified ground is first derived. This Green's fun ...

Institute of Electrical and Electronics Engineers2017

Single-End FPGA-Based Fault Location System for Radial/Meshed AC/DC Networks based on the Electromagnetic Time Reversal Theory

Farhad Rachidi-Haeri, Mario Paolone, Reza Razzaghi

The paper presents an automated single-end FPGA-based fault location system for AC/DC power networks. The proposed system is based on the electromagnetic time reversal theory and uses an automated FPGA-based real-time simulator to perform the fault locatio ...

IEEE2017

A Large Bipolar Event Recorded at the Säntis Tower

Farhad Rachidi-Haeri, Marcos Rubinstein, Davide Pavanello, Mario Paolone, Mohammad Azadifar, Wolfgang Schulz

2017

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