Short‐term load forecast for individual electric customers is becoming increasingly important in the grid operation, since the power system is becoming a more interactive and intelligent system. Accurate short‐term load forecast for industrial or commercial electric buildings is more challenging due to the complicated load characteristics and numerous influence variables. In this paper, we consider

Multifunction vehicle bus (MVB) is the most widely used train communication network which transmits controlling and supervising data. The faults of MVB will heavily affect the train's safe and stable operation. Due to the harsh operating environment and distributed structure, the MVB fault diagnosis has always been a difficult issue in the maintenance of the train. Many MVB faults will distort the

This paper reviews various sensor technologies with application in automobiles and robots. Several automotive sensors have been developed using the micro‐electromechanical systems (MEMS) technology. The technologies related to combustion pressure sensors, yaw rate sensors, acceleration sensors, and optical scanners are described here. The combustion pressure sensors are used for engine control, while

Influence of pulsed electric field (PEF) on the drying rate of foods during the hot air drying process is investigated. Nine kinds of fruits and vegetables and two kinds of marine products are used as the samples, and changes in the weight of these samples during the process are evaluated. PEF is applied to the samples using parallel plate electrodes. The applied voltage ranges from 0.4 to 3 kV, and

Adding a Battery Energy Storage System (BESS) in the vicinity of renewable energy sources is a feasible solution to overcome the inherent negative impact caused by their random power fluctuating problems. Power conversion system performs as an interface between the battery packs and grid. The control method of power conversion system is essential to BESS. Finite Control Set Model Predictive Control

The present paper describes the design and evaluation results of a sensor for measuring body pressure and sweat volume using conductive fibers. Pressure ulcers that develop from staying in the same posture for a long time are a serious problem in nursing care. The main causes of pressure ulcers are blockage of capillaries due to body pressure and skin structure degeneration due to sweat. To quantify

This report presents rigorous analysis of Arnol'd tongues generated by a manifold piecewise linear circuit. The circuit comprises an LC oscillator, a conductive switch that produces the manifold, and a voltage source controlled by the current value through the inductor when the voltage across the capacitor exceeds a threshold. From the circuit dynamics, the Poincaré return map is explicitly derived

Semisupervised classification aims to construct a classifier by making use of both labeled data and unlabeled data. This paper proposes a semisupervised classifier based on a piecewise linear regression model implemented by using a gated linear network. The semisupervised classifier is constructed in two steps. In the first step, instead of estimating the break points of a piecewise linear model directly

For commuters, the workplace is the second most important place to be able to charge electric vehicles after their own residence. In order to satisfy the charging demand near to the workplaces of commuters, a location and capacity model for charging stations is set up with the aim of minimizing the overall cost, composed of the charging station construction cost and the generalized cost of users. The

During the low‐voltage ride‐through (LVRT) of the doubly fed induction generator (DFIG), the change rate of the stator flux is introduced as the feed‐forward compensation (FFC) to prevent the stator flux oscillation from affecting the rotor current control. The dual‐sequence FFC is proposed for the asymmetrical LVRT of the DFIG. To reduce the rotor voltage increase due to the FFC, the controllable

In this paper, we propose a semicentralized voltage control method utilizing past voltage measurements obtained with sensors in a distribution network (DN) to improve the voltage control performance of a single‐step voltage regulator (SVR). In this method, the SVR basically performs autonomous voltage control referring to the control parameter, the reference voltage, but the parameter is updated with

Nonlinear dynamic behaviors such as the bifurcation and chaos of DC‐DC converters with switching constant power load are studied in this paper. Based on the consideration of constant power load switching, a discrete iterative mapping model of the system including the switching process is established, and its Lyapunov exponent spectrum algorithm is derived. The main procedure of the algorithm is as

In this study, we applied coaxial arc plasma deposition in vacuum and without substrate heating to prepare composite films of boron‐doped nanocrystalline diamond and amorphous carbon (B‐doped NCD/a‐C) exhibiting electrochemical characteristics similar to those exhibited by the conductive polycrystalline diamond electrodes. Furthermore, we confirmed that the deposited films can be used to determine

Currently, the calculation of the surface roughness parameter is mainly based on the surface height data of the rectangular region, which results in the nonrectangular relay contact surface topography acquisition being limited to a certain local area, and it is difficult to characterize the overall topography state of contacts. In this paper, a method of fitting the rotation roughness parameter is

Gene ontology annotation is known to be a very complicated multilabel classification task, and the hierarchical multilabel classification (HMC) approaches with local classifiers have been shown to be effective for the task. In a traditional HMC method, a set of hierarchically organized simple local classifiers are usually used, each of which for one hierarchical level separately. In this paper, we

This paper presents an improved morphological gradient for transformer inrush identification. Dissociative structuring element is presented and used to perform gradient operation, which can decrease the computational burden. Besides, a new index is introduced to measure the feature of extracted morphological gradient and to distinguish inrush from fault current. Simulation studies are conducted using

The lightning occurrence characteristics around Tokyo Skytree are investigated with Japan Lightning Detection Network, and the results are evaluated with observation data by the Rogowski coils installed at a height of 497 m and by cameras set around Tokyo Skytree. After the construction of Tokyo Skytree, the apparent density of detected strokes near Tokyo Skytree increases, but without lightning strokes

As an effective way to accommodate the distributed renewable energy, microgrid participating in the electricity market competition is an inevitable trend. Because of severe uncertainty and poor dispatchability of the distributed renewable energy in the microgrid, how to counterbalance the deviation between microgrid's actual output/demand and cleared quantity from the market is an important issue needed

Calcium sulfate and other slightly soluble salts in the natural pollution of catenary insulators could result in differences in flashover voltages between artificially and naturally polluted insulators at the same salt deposition density. Based on the insulator pollution characteristics in saline‐alkali areas and the saturated water absorption of polluted insulators, the equivalent salt deposit density

We develop a machine vision system as a key component of a robot‐assisted packaging system, which can guide the robot arms to pack the roast sauries into cans. For gripping strategy generation, the system is required not only to be able to detect the roast saury area but also estimate the geometric parameters. Besides, according to different canning requirements, it is also necessary to distinguish

This paper presents a robust state estimation (SE) based on weighted least absolute value (WLAV) criterion for power systems having both traditional remote terminal units (RTU) and synchronizing phasor measurement units (PMU). It is known that WLAV‐based SE performs poorly when bad data occurred in leverage measurements. To improve the robustness of WLAV‐based SE, a technique for converting actual

Switched reluctance motor (SRM) and induction motor (IM) technologies are studied based on specific ASEAN Bangkok and Hanoi driving cycles. Range simulations and thermal analyses have been performed on standard driving cycles: ECE15 and WMTC Part 1 as well as ASEAN cycles: Bangkok driving cycle and Hanoi motorcycle driving cycles. The e‐scooter ranges vary from 44 to 99 km depending on driving cycle

A nail tip sensor that can provide long‐term vital data acquisition without uncomfortable wearing feel is described and discussed. Through 24 h continuous measurement under daily life environment, the proposed nail tip photoplethysmographic (PPG) sensor circuit works effectively and shows no deterioration in the quality of PPG waveform due to aging, peeling, flooding, or vibration. The waveform of

With the increased number of installations of distributed photovoltaic (PV) systems within electricity distribution systems, power flow analysis is required to handle multiple PV systems. At present, PV systems are equipped with a local control function (LCF). The conventional algorithm is then applied for power flow analysis with the LCF of each PV system, where the power output of LCF of each PV

As a mathematical model to represent the dynamics of a plant to be controlled, the T‐S fuzzy model is widely used in the control system design. In order to facilitate controller design, it sometimes needs suitable coordinate transformations of the T‐S fuzzy model. Subsequently, some questions arise: (1) can local systems in different fuzzy rules perform different coordinate transformations? if yes

Recently, multiperson tracking across non‐overlapping camera views is gaining increasing attention in the video surveillance field due to its importance for public security. Most existing methods find a correspondence of person images individually across each pair of adjacent two cameras. However, in such a naive approach, redundant matching where one of the person images is selected for the matching

In order to achieve correct perspective template matching on two‐dimensional general images, we propose a differential evolution (DE) introducing the group remaking. Since the perspective template matching has eight degree of freedom (DoF), acquisition of a global optimum, which is an area corresponding to a template in a target image, within limited calculation resource is difficult. In order to address

Discontinuous current mode (DCM) with high‐frequency operation can be an effective way to reduce the volume of inductors for low‐power grid‐tied inverter applications. Unlike the controllers designed for continuous current mode operations, current controllers for DCM are required to address their nonlinear characteristics. A feed‐forward controller can be a good choice for the current control of the

An interdigitated electrode (IDE) capacitive humidity sensor fabricated on a silicon substrate was used to investigate sensing materials, which proved to be an ultrahigh‐sensitivity humidity sensor. A sensing layer combination (SLC) between vertically aligned ZnO nanorods and optimal graphene oxide (GO) was prepared on the device and was tested as a humidity sensor. X‐ray diffractometry (XRD) exhibited

In this article, a 16/6 bearingless switched reluctance motor (BSRM) with segment hybrid rotor teeth has been presented. To realize the decoupling control of torque and suspension force, the rotor teeth were divided into three torque teeth and three suspension teeth, and both of them are embedded in support part. First, both torque and suspension force are generated by short‐circuit excitation, the

Due to the characteristics of small, nonlinear, random, and unstable current, the high impedance faults (HIF) are not always effectively cleared by conventional over current relays. A new simple and effective algorithm of HIF detection in distribution network based on the wavelet time–frequency entropy is presented in this article. On the basis of analysis, the time–frequency distribution characteristics

In our previous study, we presented a method of estimating the color of amber using the red, green, and blue (RGB) color space and the hue, saturation, and value (HSV) color space. In particular, the method estimates the color of amber on a target image consisting of four colors (yellow, brown, black, and amber with an outer cover [AOC]). However, because of the existence of amber with a partially

Manually monitoring the safety of personnel working on high‐voltage lines is difficult and unreliable. To overcome this problem, this paper proposes an online high‐voltage live safety monitoring and early warning system based on spatial cross‐border prevention. To develop the proposed system, following analysis of high‐voltage typical live working modes and the minimum approach distance, we divide

The performance of effective throughput (ET) over alternate Rician‐shadowed fading channels is analyzed. A novel expression for the exact ET is obtained in terms of the Meijer's G function. Moreover, an asymptotic ET expression at the high signal‐to‐noise ratio regime is also derived to gain more insight. In order to prove the correctness of our analytical derivations, some comparisons between the

The transformer is a core device of the power system, and it is generally considered that the aging of insulating paper is important to the transformer. The aging process of insulating paper is the degradation process of cellulose. If it can be detected regularly, the aging of oil–paper insulating systems can be monitored conveniently. 5‐hydroxymethylfurfural is an important chemical substance produced

This article presents an efficient design architecture of an islanded and scalable DC microgrid comprising several power management units (PMUs) and a time slot‐based control interface. There are two primary sections in this manuscript—performance analysis of a microgrid design with phase shift modulation (PSM)‐controlled dual active bridge (DAB) converter‐based PMUs to charge Li‐ion battery energy