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1961 articles for “controlled” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Performance Analysis of BLDC Motor: A Fuzzy Approach
Abstract: AbstractThe main objective of this paper is to study the performance analysis of a Brushless DC (BLDC) motor supplying different types of loads, and at the same time, deploying different control techniques. A Fuzzy controller is compared with the commonly used conventional controllers. The controller is designed to track variations of speed references and to stabilize the output speed during load variations. A comparison has been carried out by observing …
Published in Journal of Microcontroller Engineering and Applications · Vol. 6, Issue 2, 2019 · pp. 20–33 Read article
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A Novel Architecture of Control System Processor Using Field Programmable Gate Array
Abstract: This paper presents a reconfigurable architecture of control system processor. The performance of the proposed architecture has been evaluated by taking different controllers and phase lead and phase lag networks. We designed the architecture of the processor and realizing the architecture using adder, multiplier, delay unit and validate it in the FPGA, which show that the hardware scheme is feasible for practical application. The experimental results clearly reveal the novelty …
Published in Journal of Microcontroller Engineering and Applications · Vol. 2, Issue 2, 2015 · pp. 13–20 Read article
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Microstructure Property relation in thermo-mechanical control processed Low Carbon Microalloyed Steel for LPG Cylinder
Abstract: LPG Cylinder manufacturing is a cylindrical forming process which involving strength as well as deep drawing and welding properties. An LPG cylinder is a safety critical components and demands very careful selection of steel quality. LPG cylinder is undertaken in India mainly by using a superior grade Al-killed low-carbon micro alloyed steel with limits of S and P control, under the specification of IS 6240, IS 15914, EN 10120 and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 1, 2019 · pp. 16–19 Read article
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Torque Ripple Reduction in Induction Motor Drive Using Direct Torque Control Technique with Space Vector Modulation
Abstract: Three phase squirrel cage induction motor drives are widely used in industries for variable speed applications. This paper proposes the design and simulation of an induction motor (IM) drive with DTC-SVM (Direct Torque Control–Space Vector Modulation). The IGBT/Diode inverter switches are controlled by the DTC-SVM technique. The synthesis of vector selection table depends on the rotational direction of the stator flux vector. The control algorithm in DTC-SVM methods are based …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 1, 2015 · pp. 33–39 Read article
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Modeling and Control of A Grid Connected Wind Turbine Power System Under Variable Wind Speeds Using Doubly-Fed Induction Machine
Abstract: This paper focuses on the development of wind turbine system and extracting maximum power for variable speed constant frequency grid connected wind turbine power system with doubly fed induction generator. A voltage oriented control scheme is used for the control of both rotor side and grid side circuit. Pitch control mechanism is implemented for the power limitation at a wind speed greater than the rated speed. The DFIM stator side …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 108–124 Read article
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Control of a Three Phase Grid-Connected Photovoltaic System with Maximum Power Point Tracking
Abstract: The power output of a photovoltaic system is greatly dependent on environmental conditions such as solar irradiation and ambient temperature. Due to the nonlinear nature of these conditions, the power output of the PV system is nonlinear. As a result, interfacing its output to the electrical grid is not possible. In order to achieve a grid connected photovoltaic (PV) system, controlled maximum power point tracking techniques are needed to obtain …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 52–64 Read article
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Adaptive-Hysteresis Current Controller Based Shunt Active Power Line Conditioners for Power Quality Improvements
Abstract: This paper presents three-phase shunt active power line conditioners (APLC) for harmonics and reactive powercompensation due to non-linear loads in the distribution network. The compensation process proposed is asinusoidal extraction control method, which consists of positive-sequence voltage detector for regulating thesupply voltage and instantaneous reactive power (p-q) theory for fundamental extraction from the distorted linecurrent. The shunt active filter voltage source inverter’s switching pulses are generated through an adaptivehysteresiscurrent controller …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 1–13 Read article
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Active Power Control during Contingency using UPFC
Abstract: The ability of FACTs devices to control phase angle, bus voltages and line impedance in transmission line is what make it capable of controlling power flow. In this paper, we have studied one of most effective FACTS device known as UPFC. Analysis under the contingency is done using 10 bus systemand contingency condition is being introduced in three-phase, delta-delta connected transformer i.e. one base is damaged or accidently opened. Now, …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 2, 2021 · pp. 1–12 Read article
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Design and Analysis of Hybrid System using Fuzzy Logic Controller
Abstract: The overall system is controlled by fuzzy logics. Load power consumes the power in sequence to solar power, wind power and the battery system power. Accordingly power delivered to the load. In the proposed framework, power is overseen or constrained by fluffy rationale regulators. The exhibition enhancement of half breed framework is examinations with sunlight based PV boards, wind turbine and the battery frameworks. The overall model & controlling strategies …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 2, 2021 · pp. 21–27 Read article
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Control Strategies for Shunt Active Power Filters in Total Harmonic Distortion Reduction: A Comprehensive Review
Abstract: This paperwork presents a single-phase shunt active power filter to reduce total harmonic distortion.Harmonic pollution in the power system has increased significantly because of the widespread usage of nonlinearsingle phase power electronic equipment on the low voltage side. For electrical engineers, improving powerquality has emerged as their greatest obstacle. A single-phase shunt active power filter was constructed inMATLAB/SIMULINK using a voltage supply inverter and a hysteresis current regulator. The performance …
Published in Recent Trends in Electronics Communication Systems · Vol. 10, Issue 2, 2023 · pp. 30–42 Read article
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A Survey on Microgrid Power Control and Management Technique for Distributed Power Generator Units
Abstract: The micro grid could consist of several configurations of renewable and non-renewable energy sources like solar photo-voltaic cell (PV) array that varies with the utility because of the fluctuations in primary power generation unit. Such integration of renewable energy reserves within the micro grid may well be accustomed in order to supplement the gap caused by variability in the power generation. The control and power management methods for the distributed …
Published in Trends in Electrical Engineering · Vol. 7, Issue 2, 2017 · pp. 47–55 Read article
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A Review on STATCOM Controller for Power Quality Enhancement in Distributed System
Abstract: New technologies, using power Electronics-based concepts, have been Developed to provide protection for Commercial and industrial customers from Power quality problems on the electrical Distribution system known as Custom Power Products. Custom power devices are classified into three categories by their structures such as dynamic voltage regulator (DVR), distribution static compensator (STATCOM) and unified power quality compensator (UPQC).The Distribution Static Compensator (D-STATCOM), one of the custom power product, is a …
Published in Trends in Electrical Engineering · Vol. 11, Issue 2, 2021 · pp. 24–29 Read article
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Regulation of Second and third Order Intervals Plant Using PID Surface Sliding Mode Control Strategy
Abstract: In this article regulation aspects of second and third-order interval systems considering sliding mode control, PID surface sliding mode control strategies are discussed. The transfer function models of second and third order systems are considered for the evaluation of system performances. The linear part and non-linear part of the SMC strategy are designed and stability is analyzed using Lyapunov analysis. A conventional PID controller and PID surface SMC strategy are …
Published in Trends in Electrical Engineering · Vol. 13, Issue 2, 2023 · pp. 28–49 Read article
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Amplifier-based High Temperature Measurement and Control System
Abstract: Thermocouple is widely used sensor for temperature measurement now a days because of its unique characteristics in terms of wide temperature range, stability, durability, and the different types that are compatible according to temperature applications. But there are many challenges like signal conditioning and absolute control that needs to be resolved while designing with them. The paper describes the solution for signal conditioning using a single analog IC AD8495 that …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 8, Issue 1, 2020 · pp. 25–36 Read article
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Assessment of Standardization and Quality Control of Saurashtri by Using Ancient and Modern Methods
Abstract: Rasaushadhis are an important part of Ayurvedic treatment. These medicines are one of the tool by which dreadful diseases are eradicated. Genuine and standard medicine can only serve this purpose. Standardization should most preferably be checked for the material which is available in varieties. Sauratri is a drug included in the group of Uparas varga. There are varieties of samples of sauratri available in the market and being used by …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 4, Issue 3, 2015 · pp. 26–32 Read article
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Cross Infection Control in Impression Making Procedures A Pilot Survey
Abstract: Dental care professionals are at high risk of cross-infection while treating patients. This occupational potential for disease transmission becomes evident when it is considered that most human microbial pathogens have been isolated from oral secretion. The present survey was conducted with the aim of investigating the knowledge, attitudes, and behaviour of dental staff and students toward cross-infection control during the procedure of impression making. A questionnaire consisting of 16 questions …
Published in Research and Reviews: A Journal of Dentistry · Vol. 2, Issue 1-3, 2011 · pp. 14–21 Read article
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Correlates of Clinical and Dietary Factors on Nutritional Status of People Living with HIV on Anti-retroviral Therapy: A Case-control Study in Central Zone of Tigray, Northern Ethiopia
Abstract: Background: Malnutrition compounds the immunosuppressive effects of HIV and speeds the disease progression among people living with HIV on ART. However, little is documented on the effect of clinical and dietary factors. Therefore, the aim of this study was to determine the correlates of clinical and dietary factors on nutritional status of people living with HIV on ART in central zone of Tigray region, North Ethiopia.Methods: A matched case-control study …
Published in Research and Reviews: A Journal of Health Professions · Vol. 6, Issue 3, 2016 · pp. 11–23 Read article
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Control of Rubella Infection and Elimination of Congenital Rubella Syndrome by Surveillance and Vaccination
Abstract: Of the vaccine preventable child hood diseases, diphtheria, measles, tetanus, polio are controlled by effective vaccination program. The same is not true about rubella virus. Rubella virus is known to cause mild illness, but the virus when infects women in early pregnancy or just before conception can lead to the development of congenital rubella syndrome (CRS) in fetus or newborn. In America and European region, the CRS is virtually eliminated …
Published in Research and Reviews : A Journal of Immunology · Vol. 2, Issue 1, 2012 · pp. 27–33 Read article
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Efficacy of Apium graveolens (Bekh Karafs) in Hyperuricemia: A Randomized Single Blind Standard Control Study
Abstract: Hyperuricemia may induce certain complications like gouty arthritis, nephrolithiasis and uricacid nephropathy. Owing to its dreadful complications, the researchers of different system ofmedicine are concentrating themselves for the development of new drugs, which can loweruric acid level in blood. The main aim of the study was to assess the efficacy of Apiumgraveolens in lowering the serum uric acid level in blood. The present study was a singleblind, randomized standard control …
Published in Research and Reviews: A Journal of Medicine · Vol. 7, Issue 2, 2017 · pp. 7–12 Read article
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Risk Factors of Neonatal Deaths Among Asphyxiated Neonates in Ayder Referral Hospital, Mekelle, Ethiopia: A Case Control Study
Abstract: In the globe about 4 million babies die during neonatal period every year and 99% of these deaths occur in low-income and middle-income countries. Out of these, almost one-fourth of them lose their lives due to birth asphyxia. The main objective of this study was to assess risk factors of neonatal death among asphyxiated neonates in Ayder Referral Hospital, Mekelle City. Institution-based unmatched case-control study was conducted from December 1st …
Published in Research and Reviews: A Journal of Medicine · Vol. 5, Issue 3, 2015 · pp. 16–26 Read article