Between 1972 and 1990, US electric utility companies cancelled orders for 117 nuclear power plants (NEI, 1996, pp. 1±6). The regulatory accounting methods adopted by utility rate setting commissions determined whether utilities could recover the losses on cancelled plants through higher rates. In e€ect, the choice of accounting methods determined how billions of dollars invested in cancelled nu...

─ This paper presents a voltage doubler in to a half bridge converter is derived for electric vehicle battery chargers. The proposed converter provides wide ZVS range, reduced circulating current and also voltage stress. Circulating current during the freewheeling phases of phase shift full bridge circuit are reset by the sum of LLC circuit output voltage and resonant capacitor voltage by achie...

Parallel plate capacitors employing Bi1.5Zn1.0Nb1.5O7 sBZNd thin films with the pyrochlore structure were fabricated on platinized sapphire substrates. The total device quality factor and capacitance were analyzed in the microwave frequency range sup to 20 GHzd by measuring reflection coefficients with a vector network analyzer. The parasitics due to the probe pads were extracted from the measu...

The emergence of silicon carbide(SiC-) based power semiconductor switches with their superior features compared with silicon (Si) based switches has resulted in substantial improvements in the performance of power electronics converter systems. These systems with SiC power devices are more compact, lighter, and more efficient, so they are ideal for high-voltage power electronics applications, i...

Loss minimization in power system is an important research issue. Transmission line losses in a power system can be minimized by means of reactive power compensation. The continuous demand in electric power system network has caused it to be heavily loaded leading to voltage instability. This phenomenon has also led to voltage profile depreciation below the acceptable secure limit. The signific...

Fluid pumping losses are one of the major sources of torque loss in modern Continuously Variable Transmissions (CVTs) due to the high pressures and flow rates required in the hydraulic control system. To reduce the magnitude of these losses, researchers at UC Davis have developed a servo-pump control system for CVTs designed for improved pressure and ratio controllability with minimal power con...

A high-0 hot-electron plasma was studied in an asymmetric magnetic mirror device with a variable cant angle. The plasma was produced by microwave heating at a frequency corresponding to cold-electron-cyclotron resonance together with a higher frequency suitable for upper-off-resonance heating. The position of the high-0 plasma annulus was studied as a function of cant angle and was found to cor...

The aim of this paper is to analyze the influence of some parameters related with the permanent magnet motor control, which are being considered as an attractive alternative for electrical vehicle application where it is important to minimize the losses to increase the vehicle autonomy. In this paper, the attention is focused on the selection of the speed controller parameters and its impact bo...

Dr. M. Stolterfoht, Dr. S. Shoaee, Dr. A. Armin, Dr. H. Jin, Dr. I. Kassal, Dr. W. Jiang, Prof. P. Burn, Prof. P. Meredith Centre for Organic Photonics & Electronics (COPE) School of Mathematics and Physics and School of Chemistry and Molecular Biosciences The University of Queensland Brisbane, QLD 4072, Australia E-mail: [email protected]; [email protected] Dr. I. Kassal Centre for En...

We develop a theory of particle acceleration inside relativistic rotating electron-positron force–free jets with spiral magnetic fields. We considered perturbation of the stationary magnetic field structure and found that acceleration takes place in the regions where the Alfvén resonant condition with the eigenmodes in the jet is fulfilled, i.e. where the local Alfvén speed is equal to the phas...