this paper presents a comparative analysis between two current control strategies, constant source power and generalized fryze current, used in active power filter (apf) applications having three different modulation methods. the hysteresis band (hb) and first-order delta-sigma modulation (dsm) as well as the second-order dsm is applied. the power section of the active power filter is viewed as...

The electrochemical intramolecular cyclization of propargyl derivatives containing a carbon–halogen bond in N,N’-dimethylformamide at constant current in a diaphragmless cell has been developed using Ni(II) complexes as electron-transfer mediators.

The problem of high-energy multi-turn injection into a constant gradient electron synchrotron from a linear accelerator has been studied. The injected beam is characterized by a constant current with a well defined duration, a uniform energy distribution, and unspecified distri­ butions in vertical and radial phase space. Calculations yielding the optimum synchrotron parameters and surfaces of ...

The functioning of fuel cells, in which simultaneous processes having different kinetics and different time constants occur, can be simulated by applying rather complex models. For the sake of better modeling larger numbers of sub-processes and their couplings have to be considered, which leads to complex and multi-step simulation frameworks. In this work new methods are introduced for the simu...

We solve exactly the problem of calculating the electromagnetic fields produced by a finite wire with a constant current, by using two methods: retarded potentials and Jefimenko’s formalism. One result in this particular case is that the usual Biot–Savart law of magnetostatics gives the correct magnetic field of the problem. We also show graphically the corresponding Poynting vector.

This paper introduces a new kinematic model to describe the planar motion of an Autonomous Underwater Vehicle (AUV) moving in constant current flows. The AUV is modeled as a rigid body moving at maximum attainable forward velocity with symmetric bounds on the control input for the turning rate. The model incorporates the effect a flow will induce on the turning rate of the AUV due to the non-sy...

This paper presents an investigation into the use of a current control scheme (CCS) and a comparison with a classical switching scheme for switched-capacitor (SC) step-down dc/dc converters. With the CCS, capacitors are charged with near-constant current, controlled by the gate–source voltage of MOSFET’s. By paralleling two SC cells, the converter input current becomes continuous, resulting in ...

The spontaneous electroluminescence emission of InAs light-emitting diodes ~LEDs! operating at 3.3 mm was studied as a function of applied hydrostatic pressure. An enhancement of a factor of almost four in radiative efficiency at room temperature was observed in the range 0 to 10 kbar. Analysis of the dependence of electroluminescence emission intensity on hydrostatic pressure at constant curre...