environmental degradation and economic growth are two important proofs in sustainable developmentwhich are followed by steel industry. in this case, energy and environmental damages as sustainabilitypatterns of environment have been investigated in three different dust collectors to select the mostenvironmentally suitable dust collector for electric furnace. in this article, the consumption amo...

The paper focuses on some aspects of control and estimation in electric drives with inverter output filters. The filters are used in some industrial drives with pulse width modulated (PWM) inverters. They smoothes the motor supply voltage and current so nearly sinusoidal shapes are obtained. The filters can also limit the bearing current and shaft voltages. Because of the voltage drop and phase...

In this paper, we simulated series arc on electric heaters, vacuum cleaners and incandescent lamps controlled by a dimmer to analyze the characteristics of series arc that causes electric fires. A high pass filter (HPF) was designed to detect arc signal only. The HPF consists of 2-stage coupling capacitors and detection impedance, and its low cut-off frequency of -3 dB was estimated to 3 kHz. B...

The embedded meander line in stepped-impedance resonator (SIR) is proposed to design narrow bandpass filter with a good stopband characteristics. The design differs from the general SIR configuration in that the microstrip lines are bent at the location of the maximum magnetic field density. As a result, the resonators have high external quality factors by themselves, since the factor is closel...

A new device, referred to as Superconducting Power Filter (ScPF), is introduced improve the stability of aircraft electric DC grids. This device made a non-inductive superconducting coil connected in series with conventional RLC filter. The behaves nonlinear current-dependent resistance. By design, superconductor does not undergo full transition normal-resistive state and remains current-sharin...

In this paper, the optical properties of the multilayer rugate filter by structure of (HL) ^ 9Hhas been investigated. Here the reflection, optical density and electric field strength of designed filter by using four materials of Ta2O2, Nb2O5 and ZnS as the materials with high refractive indexandSiO2as a material with low refractive index are compared with each other. Finally, it is realized tha...

1. Types of Electric Networks 1.1 Definitions for Active and Passive Components 1.2 Alternative Definitions 1.2.1 Modeling a Capacitor 1.2.2 Modeling an Inductor 1.2.3 Alternative Definition of Active Circuits 1.3 Active Circuits in Power Electronics 2. Active Filters 2.1 Voltage Source Inverter (VSI) as Active Filter 3. Power in Three Phase Systems 3.1 Alternative Expressions 3.2 Active Filter...

Direct measurement of the electrogenic activity of purified mitochondrial transhydrogenase has been carried out. To this end, beef-heart transhydrogenase was isolated and reconstituted with phospholipids to form proteoliposomes. The transhydrogenase proteoliposomes were incorporated into a membrane filter impregnated with a decane solution of phospholipids. It is shown that addition of substrat...