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Keywords: Capacitive sensing; capacitor sensor; characteristic frequency; metal ions detection; parallel-plate capacitor. 1. Introduction Capacitive sensing1 is becoming an increasingly popular technology to replace optical and mechanical methods for motion detection applications,2 material analysis,3 and liquid level4 sensing. The main ...
Keywords: Capacitive sensing; capacitor sensor; characteristic frequency; metal ions detection; parallel-plate capacitor. 1. Introduction Capacitive sensing1 is becoming an increasingly popular technology to replace optical and mechanical methods for motion detection applications,2 material analysis,3 and liquid level4 sensing. The main ...
Index Terms—Fault Detection, Internal Fault, Phasor Estima-tion, Protection, Shunt Capacitor Banks. I. INTRODUCTION The capacitor units, given their wide range of applications in high voltage power systems, are generally protected by var-ious fuse-based protection schemes such as externally fused, internally fused, or even fuseless ...
A novel short-circuit (SC) fault detection approach to protect the low-voltage dc microgrid (DCMG) and is capable of detecting both low and high impedance faults. This article describes a novel short-circuit (SC) fault detection approach to protect the low-voltage dc microgrid (LV-DCMG). The SC faults are the most common fault in the dc power system and …
1 Introduction. Wearable, flexible, and stretchable sensors based on piezoresistive, triboelectric, piezoelectric, and capacitive mechanisms have experienced rapid advancement to meet sensing demands in a diverse range of applications (e.g., soft prosthetic hand for amputees [1-4] and flexible, human activity recognition and body signal monitoring, [5, 6] artificial intelligence, [7, 8] …
In recent years, there has been growing interest in developing capacitive biosensors using Complementary Metal Oxide Semiconductor (CMOS) technology for various …
Various sensing principles can be used for different detection tasks. The sensing principle most suitable for the specific application is determined from various considerations: These include the material of the object to be detected, the application environment, and the distance from which the detection is to take place.
C. For fixed capacitors above 001μF, use the R×10k block of the multimeter to directly test the capacitor for charging process and whether there is internal short circuit or leakage, and estimate the capacity of the capacitor according to the amplitude of the pointer to the right. 2. Detection of electrolytic capacitors. A. Because the ...
Therefore, this paper proposes a new technique for the detection and classification of high-transient inrush current using six different cases of transient-mitigation methods (base case, pre-insertion resistor (PIR), pre-insertion inductor (PII), CLR, 6% reactor and synchronous closing control) which are normally found in the application of a capacitor …
The article will discusses strengths, weaknesses, and implementations of established sensing techniques such as E-field Sensing, Charge Transfer, Force-Sensing Resistor (FSR), …
Various natural and artificial methods have been employed to transfer DNA, RNA, and other desired molecules into the cells [1, 2].Each method possessed its own advantages and disadvantages in terms of transfected cell type and transfection efficiencies, thereby choosing the most convenient method were of higher importance for successful applications [3,4,5].
Micro- and nanostructured capacitive proximity sensors allow for highly sensitive displacement detection in an ultra-small form factor with low power consumption. Li et al. developed a fabrication method using a laser to selectively fuse a copper precursor to print …
Less defective, nitrogen-doped 3-dimensional graphene (N3DG) and defect-rich, nitrogen-doped 3-dimensional graphene (N3DG-D) were made by the thermal CVD (Chemical Vapor Deposition) process via varying the carbon precursors and synthesis temperature. These modified 3D graphene materials were compared with pristine 3-dimensional graphene (P3DG), …
These methods include on chip capacitive sensor and transducer measurement techniques that have been implemented for low value capacitance evaluations using CMOS technology. After …
Condition monitoring in electric motor drives is essential for operation continuity. This article provides a review of fault detection and diagnosis (FDD) methods for electric motor drives. It first covers various types of faults, their mechanisms, and approaches to detect and diagnose them. The article categorizes faults into machine faults, power electronics (PE) faults, …
The most focused, authoritative book available in the field, Capacitive Sensors brings you complete information on the research, design, and production of capacitive sensors. This all-in …
In the domain of automatic visual inspection for miniature capacitor quality control, the task of accurately detecting defects presents a formidable challenge. This challenge stems primarily from the small size and limited sample availability of defective micro-capacitors, which leads to issues such as reduced detection accuracy and increased false-negative rates …
This study deals with a new approach for real-time detection of early ageing in DC-link electrolyte capacitors of DC–DC converters. The method is based on the comparison between the slope of the inductor current derived from …
The capacitor will charge up during the conduction phase, thus storing energy. When the diode turns off, the capacitor will begin to discharge, thus transferring its stored energy into the load. The larger the capacitor, the greater its storage …
Transient Inrush Current Detection and Classification in 230 kV Shunt Capacitor Bank Switching Under Various Transient Mitigation Methods Based on Discrete Wavelet Transform May 2018 IET ...
As discussed before, in many applications, the life-time of electronic systems is directly linked to the life-time of their capacitors and life span of these capacitors is the vital factor that ensures the reliability of the system. The wear-out of aluminium electrolytic capacitors is due to vaporisation of electrolyte that leads to a drift of the main electrical parameters of the …
Application Report FDC1004: Basics of Capacitive Sensing and Applications David Wang ABSTRACT Capacitive sensing is becoming a popular technology to replace optical detection methods and mechanical designs for applications like proximity/gesture detection, material analysis, and liquid level sensing. The main
An attractive alternative in the industrial automation area is the capacitive detection in relation to mechanical systems. Currently, it is possible to notice a technological tendency for the use of capacitors in the industrial and consumer sectors, mainly due to the absence of mechanical parts in capacitive detection, which results in greater durability and …
Capacitive sensors have advanced rapidly to create new applications including wearable sensors for human health monitoring, integrated sensors for intelligent surgical devices, tactile …
methods used to detect capacitors failures. • Detecting consecutive and ambiguous failures,live reporting of number of failed elements helps for preventivemaintenance and thus reducing unscheduled outages 3 • Ungrounded (a) • Grounded (b and c) Different Grounding Configurations N X A X B X C A B C V N V P I G X NV R V R N (b) (a) (c) 4. Estimate the …
The machine vision-based PCB defect detection methods mainly include traditional image processing [8,24,49,54,55], machine learning [45,56, 57], and deep learning methods [58][59][60], as shown in ...
Request PDF | Short-Circuit Fault Detection and Isolation Using Filter Capacitor Current Signature in Low-Voltage DC Microgrid Applications | This paper describes a novel short-circuit (SC) fault ...
Request PDF | On Jun 1, 2018, Yih-Lon Lin and others published Capacitor Detection in PCB Using YOLO Algorithm | Find, read and cite all the research you need on ResearchGate
Capacitor Applications. Capacitors are used in almost every field of electronics, and play a very significant role in power circuits as well. Depending on the application we may use different types of capacitors for different applications. In electronics, we use capacitors for filters, oscillators, and tuned circuits, and for these applications mostly …
New method of capacitors failure detection and location in shunt capacitor banks . ... [10] S. Samineni, C. Labuschagne, and J. Pope, "Principles of shunt capacitor bank application and protection," in Protective Relay Engineers, 2010 63rd Annual Conference for, March 2010, pp. 1–14. [11] J. Schaefer, S. Samineni, C. Labuschagne, S. Chase, and D. Hawaz, "Minimizing …
Capacitive sensing is becoming a popular technology to replace optical detection methods and mechanical designs for applications like proximity/gesture detection, material analysis, and …
In recent years, passive wireless sensors have been studied for various infrastructure sectors, making them a research and development focus. While substantial evidence already supports their viability, further effort is …
The book offers summaries of centralized capacitor voltage-balancing control methods and presents several capacitor monitoring methods, like the direct and sorting-based techniques. It also describes full-bridge and half-bridge submodule-based hybrid MMC protection methods and alternative fault blocking SM-based MMCs. Readers will also find:
The application of capacitors in these motors also reduces electricity consumption. This contributes to more environmentally friendly household appliances. Read More, Capacitors in Series and Parallel; History Of Capacitors; Energy stored in a Capacitor; FAQs on Real Life Applications of Capacitors What are common uses of capacitors in daily …
This method is verified that it can detect the location of fault capacitor when there is only one capacitor is fault, and largely overcomes the disadvantages existed in recent detection methods: high cost, bad detection timeliness and influence on railway transportation. This paper uses transport-line theory to construct equivalent model of jointless track circuit …
In MMC-based HVDC applications, a few software-based methods can be adopted to detect and identify a faulty SM by using a sliding mode observer, Kalman filter, and state observer . However, fault detection based on a sliding mode observer results in high computational burden because the number of SMs is large [ 15 ].
The main works of this paper are: (1) develop an AOI system for capacitor polarity defect detection, propose the framework and measurement method of a light source …
Further, this study envisioned the numerous fault detection methods available for MLI systems and addresses all the major types of faults and compare the several soft computing techniques with an emphasis on its diagnostic accuracy. Also, a comprehensive analysis of the different types of FTC methods based on the additional component requirement, challenges, and solutions …
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After the capacitor is powered on the plates are charged