Using a criterion based on the damping ratio. an optimization algorithm was successfully applied to establish the optimal coordination between PSSs and UPFC-based stabilizer using Genetic Algorithm (GA). A multi-objective function was utilized to formulate the problem. whose solution aims to maximize the damping ratios of the electromechanical modes using …
Read More »Optimal Size of Battery Energy Storage and Monotonic Charging Discharging Strategies for Wind Farms
Optimal capacity of a large-scale BESS integrated with a grid-connected wind farm has been determined. It has been shown that the optimal size of all the batteries of the BESS decreases as the number of batteries increases. Furthermore. the optimal size of all the batteries of the BESS tends to …
Read More »Performance Evaluation of a Low-Speed Single-Side HTS Linear Induction Motor Used for Subway System
Based on the FEM. this paper sets out a new mathematical model for calculation and analysis of the HTS LIM. which considers the current characteristics and the magnetic flux pinning phenomenon of the superconductor. The magnetic flux density distributions and the performance as thrust. vertical force. eddy-current loss. efficiency. and …
Read More »Coded Modulation for Fiber-Optic Networks
To utilize the available resources in an optical network efficiently. the tradeoff between spectral efficiency. DSP hardware complexity. and transparent reach needs to be optimized for different links in the network. Joint coding and modulation schemes offer more freedom to exploit the available four dimensions in these channels than traditional …
Read More »Noise Sensitivity of Teager-Kaiser Energy Operators and Their Ratios
The Teager-Kaiser energy operator (TKO) belongs to a class of autocorrelators and their linear combination that can track the instantaneous energy of a nonstationary sinusoidal signal source. TKO-based monocomponent AM-FM demodulation algorithms work under the basic assumption that the operator outputs are always positive. In the absence of noise. this …
Read More »Iris Image Compression using Wavelets Transform Coding
Iris recognition system for identity authentication and verification is one of the most precise and accepted biometrics in the world. Portable iris system mostly used in law enforcement applications. has been increasing more rapidly. The portable device. however. requires a narrow-bandwidth communication channel to transmit iris code or iris image. …
Read More »A New Magnetic-Field-Modulated Brushless Double-Rotor Machine
A new MFM-BDRM is proposed. solving the contradictory problem of the electromagnetic performance and the mechanical strength of MFM rotor in the traditional MFMBDRM. The proposed one has advantages of highly sinusoidal back EMF and low torque ripple. The maximum torque can be obtained when the optimal span ratio is …
Read More »Coordinated Day-Ahead Reactive Power Dispatch in Distribution Network Based on Real Power Forecast Errors
By considering real power forecast of DGs. reactive power ranges are better determined and used for day-ahead reactive power dispatch of distribution networks. In particular. errors of real power forecast have been used to estimate probability distribution of reactive power outputs available for achieving optimal power flow and reducing network …
Read More »Single-stage fully recycling folded cascode OTA for switched-capacitor circuits
The operational transconductance amplifier (OTA) is a basic building block used in many analogue and mixed-mode circuits such as analogue-to-digital (A D) converters and switched-capacitor filters that require fast settling and precise amplifiers [1]. Recently. the folded cascode (FC) amplifier has gained preference over the telescopic owing to the low …
Read More »Design of Schmitt Trigger Logic Gates Using DTMOS for Enhanced Electromagnetic Immunity of Subthreshold Circuits
As the supply voltage of a circuit decreases. noise immunity becomes more important to guarantee signal integrity. This paper presents a method of improving noise immunity applicable to subthreshold circuits. The traditional method for immunity enhancement is to use a Schmitt trigger. which requires an additional current path to adjust …
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