In this paper, an incremental Analog-toDigital Converter (ADC) designed as part of the signalconditioning circuitry for tissue impedance measurement system is presented. Continuous-time design techniques has been used and a modified implementation of the conversion algorithm, with respect to its discrete-time counterpart, has been developed. To reduce the influence of the no-idealities, analog ...

This article explores a nonlinear, adaptive controller aimed at increasing the stability margin of direct-current (dc), small-scale, electrical network containing an unknown constant power load (CPL). Due to its negative incremental impedance, this reduces effective damping network, which may lead voltage oscillations and even collapse. To overcome drawback, we consider incorporation controlled...

many real devices such as batteries are nonlinear and their impedance values depend on either current or voltage. However, impedance analysis is based on the assumption of a linear system. If certain conditions such as sufficiently small excitation amplitude to ensure quasi-linearity and measurements at several operating points are fulfilled, also the impedance of a nonlinear system can be inte...

Abstract For bidirectional grid‐connected DC/AC converters, the power flow variation substantially alters system stability, and especially severs under heavy load. Towards this problem, paper proposes a novel impedance uniform control method to eliminate stability degradation variations, which is achieved by reshaping converter negative incremental resistive in fragile mode. The d‐axis voltage ...

Resistive-wall impedance usually constitutes a significant percentage of the total beam-coupling impedance budget of an accelerator. Reduction techniques often entail high electrical-conductivity coatings. This paper investigates the use of negative-permittivity or negative-permeability materials for sensibly reducing or theoretically nearly cancelling resistive-wall impedance. The proposed app...

The paper analyzes grid strength and impedance for systems with significant penetration of power electronics. work shows that the traditionally employed Thévenin equivalent cannot capture different saturation states converters therefore some classical definitions based on short-circuit at point connection fail to describe system behavior. proposes map all possible voltages how depend voltage an...

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This paper reviews some of the recent signal conditioning and Interface circuits for the capacitive type sensors. This paper gives the brief idea of advantages and limitations of interface circuits for the various capacitive sensors. The sensor output may be either current or voltage but it has to be converted to the desired output range only by the signal conditioning circuit. Signal condition...