Increasing DC loads along with DC nature of distributed energy resources (DERs) raises interest to DC microgrids. Conventional droop/non-droop power-sharing in microgrids suffers from load dependent voltage deviation, slow transient response, and requires the parameters of the loads, system and DERs connection status. In this paper, a new nonlinear decentralized back-stepping control strategy f...

We describe a method to speed up microelectromechanical system (MEMS) mirror scanning by > 20x, while also improving scan accuracy. We use Landweber deconvolution to determine an input voltage which would produce a desired output, based on the measured MEMS impulse response. Since the MEMS is weakly nonlinear, the observed behavior deviates from expectations, and we iteratively improve our inpu...

The integration of Distributed Energy Resources (DER) in the distribution network has plenty of advantages if their allocation and Penetration Level (PL) are done appropriately. Hence, the challenge of finding the best allocation and PL of DERs in large distribution networks is an important but intricate problem. This paper proposes a novel methodology to simultaneously determine the optimal lo...

We propose a general formalism to describe accurately the angular dependence of the magnetoresistance. A parabolic band model is used to determine without approximation the conductance of arbitrary complex heterostructures. Simple analytical expressions are obtained in some limit cases. Particularly, we show that significant deviation from the cosine dependence is expected for ferromagnetic bar...

| The accuracy of current mirrors in analog VLSI is reduced due to the reduction in the size. This paper describes a statistical approach for determining the accuracy of four commonly used current mirror structures, in the presence of process variations. Results indicate that with the same area limitation the simple twotransistor current mirror and the source degenerated current mirror have the...

Process variation has become a major concern in the design of many nanometer circuits, including interconnect pipelines. The primary sources of manufacturing variation include Deposition, Chemical Mechanical Planarization (CMP), Etching, Resolution Enhancement Technology (RET). Process variations manifest themselves as the uncertainties of circuit performance, such as delay, noise and power con...

abstract: one the most important problems in recent sensitive loads is the quality of voltage. for this challenge custom power devices are used in distribution systems. dynamic voltage restorer (dvr) is a custom power device that improves voltage, decrease power distortion, filter harmonics and balance distributed generations (dgs) with low voltage distribution system. in this paper, a new algo...

To achieve accurate reactive power sharing and voltage frequency and amplitude restoration in low-voltage microgrids, a control strategy combining an improved droop control with distributed secondary power optimization control is proposed. The active and reactive power that each distributed generator (DG) shares is calculated by extracting load information and utilizing a power sharing ratio, a...

Static VAR Compensator (SVC) is one of the shunt type FACTS devices for providing reactive power support in power systems network and its placement representing the location and size has significant influence on enhancement of voltage profile. This paper presents a firefly algorithm based optimization strategy for placement of SVC in power systems with a view of minimizing voltage deviation at ...

A resilient tracking circuit for suppressing the timing variation of SRAM sense amplifier enable (SAE) signal is proposed. Pipelined replica bitline technique is used to favour the desired design. Simulation results show that the cycle time is reduced by ∼27% owing to ∼70% reduction of the standard deviation of SAE at a 1.05V supply voltage in 28 nm CMOS technology with four-stage pipeline.