This paper presents new features recently added to a general-purpose surge simulation code based on the FDTD (Finite Difference Time Domain) method. The added features include various-shape conductor models, lumped-parameter circuit-element models, a lightning-channel model, and an integrated analysis environment (IAE). For precisely modeling the shapes of various conductors, the following cond...

We have proposed a method for the detection of dark matter axion. It uses superconductor under strong magnetic field. As is well known, axion induces oscillating electric field The proportional to and makes charged particles oscillate in conductors. Then, radiations electromagnetic fields are produced. Radiation flux depends on how large induced number present show that essentially identical on...

Axial flux permanent magnet (AFPM) generators for small-scale wind turbine applications have proven to be a useful design due to their reliability and ease of construction. Their stators have been realized using concentrate coils of enameled copper wires embedded in an epoxy-resin composite mixture. A static setting, opposed to a dynamic machine environment, is utilized to study the steady stat...

In this article we address the issue of shape estimation using electric sense inspired by the active electric fish. These fish can perceive their environment by measuring the perturbations in a self-generated electric field caused by nearby objects. The approach proceeded in three stages. Firstly the object was detected and its electric properties (insulator or conductor) identified. Secondly, ...

An operation of any electromechanical device, in that number electric machines, it is electric motors and generators, can be seen as: a) An impact of magnetic field on a piece of ferromagnetic material, b) An interaction of two magnetic fields: magnetic field of primary part and magnetic field of secondary part; the secondary magnetic field can be generated: either by a current flowing in a win...

Using electromagnetic forces to suspend rotating objects (rotors) without mechanical contact is often an appealing technical solution. However, in real life magnetic suspensions have to satisfy many engineering performance requirements beyond the simple compensation for the rotor weight. These typically include adequate load capacity and stiffness, low rotational loss, low price, high reliabili...

Abstract We propose a method of detecting the dark matter axion by using two slabs conductor. The flat surfaces are set face to face, parallel each other. An external magnetic field B is applied. Radiation converted from arises between slabs. When we tune spacing l such that = π/ma with mass ma, resonance occurs so radiation becomes strong. Furthermore, electric current flowing on surface enhan...