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Journal articles on the topic 'Transformer switch-off'

Author: Grafiati

Published: 30 June 2021

Last updated: 29 July 2025

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1

Rajko Gardijan and Alen Keller. "TRANSFORMER BUSHING – A PART OF MEASUREMENT SYSTEM." Journal of Energy - Energija 61, no. 1-4 (2022): 149–59. http://dx.doi.org/10.37798/2012611-4247.

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Power transformer is one of the most important and most expensive components in the electric power system (EPS) and requires, from its production and throughout lifetime, continuous monitoring and checks of the availability in the power system. All the measurements and tests on the transformer which manufacturers attempt, in order to determine the quality of their products, are carried out through the connection of different types of bushings, and these measurements and tests are conducted in accordance with requirements of applicable standards. Also, the owner of the transformer during the ex

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2

Florkowski, Marek, Jakub Furgał, Maciej Kuniewski, and Piotr Pająk. "Overvoltage Impact on Internal Insulation Systems of Transformers in Electrical Networks with Vacuum Circuit Breakers." Energies 13, no. 23 (2020): 6380. http://dx.doi.org/10.3390/en13236380.

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Vacuum circuit breakers are increasingly used as switching apparatus in electric power systems. The vacuum circuit breakers (VCBs) have very good operating properties. VCBs are characterized by specific physical phenomena that affect overvoltage exposure of the insulation systems of other devices. The most important phenomena are the ability to chop the current before the natural zero crossing, the ability to switch off high-frequency currents, and the rapid increase in dielectric strength recovery. One of the devices connected directly to vacuum circuit breakers is the distribution transforme

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3

Adabi, Ehsan, and Ali M. Niknejad. "Analysis and Design of Transformer-Based mm-Wave Transmit/Receive Switches." International Journal of Microwave Science and Technology 2012 (July 26, 2012): 1–11. http://dx.doi.org/10.1155/2012/302302.

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Transformer-based shunt single pole, double-throw (SPDT) switches are analyzed, and design equations are provided. A mm-wave transformer-based SPDT shunt switch prototype was designed and fabricated in 90 nm digital CMOS process. It has a minimum insertion loss of 3.4 dB at 50 GHz from the single pole to the ON-thru port and a leakage of 19 dB from the single pole to the OFF-thru port. The isolation is 13.7 dB between the two thru ports. Large signal measurements verify that the switch is capable of handling +14 dBm of input power at its 1 dB compression point. The fabricated SPDT switch has a

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4

Tang, Yu, and Gang Wu. "Design of the Push-Pull Switch Power Supply Based on UC3525A." Applied Mechanics and Materials 341-342 (July 2013): 1261–65. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.1261.

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Switch power supply is a power supply of maintaining the stable output voltage by the use of modern electronic technology, controlling the time ratio (duty cycle) of on and off of switching transistors . Push-pull switch power supply is a form of switching power supply family, which is divided into an independent-excited push-pull switch power supply and self-excited push-pull switch power supply. This paper will put forward an design scheme of the independent-excited push-pull switch power supply based on the design requirements, and the driving integrated circuit selection according to the d

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5

Yueh-Ru, Yang. "Analysis and Design of Filament Power Supply with Voltage-Fed Single-Switch ZVS Inverter." E3S Web of Conferences 64 (2018): 07007. http://dx.doi.org/10.1051/e3sconf/20186407007.

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In this paper, an off-line voltage-fed single-switch zero-voltage-switching (ZVS) inverter is analyzed and designed for the filament power supply of cooker magnetrons. Due to the low resistance of cathode filament, an isolation transformer with large turn ratio is used. To obtain the ZVS operation, a parallel-resonant capacitor is connected to the primary of transformer. The capacitor, transformer and filament constitute a parallel resonant tank. Both the transformer leakage inductance and the transistor output capacitance are merged into the resonant tank. The resonant energy provides the ZVS

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6

Cai, Linglong, Bin Tai, Jiangnan Liu, et al. "Development of All Solid State Nanosecond Pulse Transformer Fault Detection Device Based on Marx Circuit." Journal of Physics: Conference Series 2774, no. 1 (2024): 012073. http://dx.doi.org/10.1088/1742-6596/2774/1/012073.

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Abstract a nanosecond pulse generator with a fast leading edge for transformer fault diagnosis is developed. The device is composed of a full solid-state nanosecond pulse generator based on Marx circuit and with a tail cut switch and a field programmable logic gate array (FPGA) device. Among them, the nanosecond pulse source is mainly composed of DC power supply, control circuit and main circuit. The main circuit is a 9-level modular Marx circuit, using MOSFET as the main switch and tail cut switch; The control circuit generates a synchronous trigger pulse signal, which drives the MOSFET to wo

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7

Kao, Hsuan-Ling. "On-Chip Voltage-Controlled Oscillator Based on a Center-Tapped Switched Inductor Using GaN-on-SiC HEMT Technology." Electronics 10, no. 23 (2021): 2928. http://dx.doi.org/10.3390/electronics10232928.

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This study presents a voltage-controlled oscillator (VCO) in a cross-coupled pair configuration using a multi-tapped switched inductor with two switch-loaded transformers in 0.5 µm GaN technology. Two switch-loaded transformers are placed at the inner and outer portions of the multi-tapped inductor. All the switches are turned off to obtain the lowest sub-band. The outer transformer with three pairs of switches is turned on alternately to provide three sub-band modes. A pair of switches at the inner transformer provide a high-frequency band. Two switch-loaded transformers are turned on to prov

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8

BEZVESILNA, OLENA, SERGEY NECHAI, TETIANA TOLOCHKO, and MARIIA GRYNEVYCH. "TWO-CHANNEL BALLISTIC TRANSFORMER GRAVIMETER." Herald of Khmelnytskyi National University. Technical sciences 331, no. 1 (2024): 239–43. http://dx.doi.org/10.31891/2307-5732-2024-331-35.

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The two-channel ballistic transformer gravimeter for measuring the doubled value of the acceleration of gravity contains a gravimeter that uses a fixed glass tube made of a dielectric material, a magnetized test body in the form of a layer, a computer and an inductance winding, which is characterized by the fact that the fixed tube is made of a dielectric material, the inductance winding acts as a primary excitation winding connected to the power source, which additionally contains two identical sections of the secondary output winding, connected in series-opposite, to create two measurement c

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9

Fomin, Igor Nikolaevich, Roman Pavlovich Belikov, Tatyana Anatolyevna Kudinova, and Nailya Kamilevna Miftakhova. "Development of a Method and Algorithm for Inhibiting an Automatic Transfer Switch of the Circuit Breaker for a Sustained Short-Circuit." E3S Web of Conferences 220 (2020): 01011. http://dx.doi.org/10.1051/e3sconf/202022001011.

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Circuit breakers with automatic transfer switches (ATS) are designed in such a way that when the voltage disappears during a short-circuit (SC) in the ring network line, the ATS device is triggered. At the same time, its switch is turned on at short-circuit, then it is turned off with acceleration. Even a shortterm switching on of the automatic transfer switch for a sustained short-circuit leads to emergency situations [1,2]. The electrical equipment of the ring network spare line is exposed to high emergency short-circuit currents, and the consumers powered by the spare transformer are turned

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10

Meena, Ankush, Arpit Gangwal, Himanshu Vijay, Chetan Prajapat, and Jitendra Singh. "Touch Controlled Switch Board with Multiple Load Switches." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 1343–46. http://dx.doi.org/10.22214/ijraset.2022.42466.

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Abstract: As everything gets advanced day by day, Nowadays people are giving importance to their safety and security for this we are introducing this project where, A switch is implemented that is turned on and off by touching a TTP223 module, instead of a regular switch. which prevent us from getting shocked. This circuit is useful in places such us electrical doorbells , toys , wet areas and industries. Keywords: TTP223 (Capacitive touch module) , 5V Relay , Transformer , Power supply

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11

Kim, Hyun-Woong, Minsik Ahn, Ockgoo Lee, Hyoungsoo Kim, Hyungwook Kim, and Chang-Ho Lee. "Analysis and Design of a Fully-Integrated High-Power Differential CMOS T/R Switch and Power Amplifier Using Multi-Section Impedance Transformation Technique." Electronics 10, no. 9 (2021): 1028. http://dx.doi.org/10.3390/electronics10091028.

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In this paper, a new topology for a high-power single-pole-double-throw (SPDT) antenna switch is presented, and its loss mechanisms are fully analyzed. The differential architecture is employed in the proposed switch implementation to prevent unwanted channel formations of OFF-state Rx switch transistors by relieving the voltage swing over the Rx switch devices. In addition to that, the load impedance seen by the Tx switch is stepped down to reduce the voltage swing even more, allowing the antenna switch to handle a high-power signal without distortions. To drop the switch operating impedance,

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12

Zhang, Zi Sheng, Dao Liu, Bo Feng Liu, Xiao Dong Shi, and Zhi Qiang Liu. "Temperature of Transformer Controller Based on TMS320C6713." Advanced Materials Research 823 (October 2013): 555–58. http://dx.doi.org/10.4028/www.scientific.net/amr.823.555.

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In order to improve the level of automation and realize remote control of the transformer temperature control system, a fast remote automatic control system that based on the chip TMS320C6713 was designed by us. Using four temperature sensors (Pt100) tow amplifier and analogy to digital (A/D) convertor detect deal with the signal of the temperature of winding and environmental. According with the temperature of transformer to control the cooling device switch on or off, the service life of the radiator was extended. In the design the digital signal processor (DSP) chip is communication with th

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13

PROF., KATKE SHARDA P., and LIGADE SANDEEP J. PROF. "ENERGY CONSERVATION IN TRACTION SYSTEM." IJIERT - International Journal of Innovations in Engineering Research and Technology NITET-18 (March 17, 2018): 22. https://doi.org/10.5281/zenodo.1451444.

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<strong><strong> </strong>Automatic tunnel Light Control System is a simple yet powerful concept,which uses transistor as a switch. By using this system manual work are 100% removed. It automatically switches ON and OFF lights. When train enters towards the tunnel lights are ON by using PIC micro controller and sensors. When train is completely gone out of tunnel lights are OFF. By using this system energy consumption is also reduced because now a days the manually operated tunnel lights are not switched off even. In this project,no Need of manual operation likes ON time and OFF time sett

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14

Amir Tokić and Ivo Uglešić. "THE NUMERICAL CALCULATION OF LOW FREQUENCY ELECTROMAGNETIC TRANSIENT PHENOMENA IN POWER TRANSFORMERS." Journal of Energy - Energija 56, no. 5 (2022): 584–607. http://dx.doi.org/10.37798/2007565368.

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In this article, a transformer model is presented that is applicable to low frequency electromagnetic transient phenomena of up to 1 kHz. An example of the energization of a no-load transformer is analyzed. A simplifed analytical approach is presented first. Due to the limitations of this approach, a numerical approach is introduced for the solution of the stiff differential equations that describe the transient phenomena. In both cases, algorithms have been developed for generating the waveforms of the state variables. The results of both algorithms are compared to the results of the MATLAB/S

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15

Zhou, Jun Ying, Nan Zhang, Su Fang Kong, Fu Hua Zhang, and Xiu Xian Guo. "Analysis of SMPS in Clinical Medical Equipment." Applied Mechanics and Materials 484-485 (January 2014): 671–73. http://dx.doi.org/10.4028/www.scientific.net/amm.484-485.671.

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There exists low voltage in circuit of domestic and imported medical equipment and it is what we call power supply. In the past, equipment mainly uses transformer to step down the voltage of power supply. With the progress of science and technology, the technique is gradually replaced by SMPW (switch mode power supply) which is extensively applied to various types of medical equipment due to the high efficiency and wide voltage range. The mains power supply is rectified and filtered into a DC high voltage and then use the switch circuit and energy storage elements to convert them into a variet

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16

Hao, Hui, Jin Ning Shan, Qing Ye, et al. "Comparative Study and Analysis of the Capacity of TCR Type SVC and Chain SVG to Suppress Transient Voltage Drop." Applied Mechanics and Materials 651-653 (September 2014): 1033–36. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.1033.

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Traditional voltage regulating means, for example, change the transformation ratio of on-load tap-changing transformer, switch on/off parallel compensation capacitor etc, could not solve transient voltage drop effectively due to slow response speed and inaccurate control. SVC and SVG adopt power electronic device that may be turned on/off at high speed and instantaneous reactive power theory, could output huge reactive power within very short time smoothly, so they are capable to suppress transient voltage drop.This paper analyzes the principles of SVC and SVG to suppress transient voltage dro

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17

Tang, Yu, Dekai Kong, Chenxu Duan, and Hao Sun. "Optimal Design of LLC Resonant DC Transformer under Adaptive Frequency Tracking Strategy." Electronics 9, no. 12 (2020): 2160. http://dx.doi.org/10.3390/electronics9122160.

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In recent years, the LLC (inductor–inductor–capacitor) DC transformer has been widely used in communication and computer power supply because of its advantages of zero voltage conduction of primary switch and zero current turn off concerning the output rectifier diode. To obtain higher transmission efficiency and make the LLC DC transformer always run at the optimal operating point, the switching frequency of the LLC DC transformer should work at the resonance frequency of the circuit. In actual conditions, the optimal operating frequency of the LLC DC transformer will be changed due to the in

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18

Tran, Duong, Nam Vu, and Woojin Choi. "A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side." Energies 11, no. 11 (2018): 2868. http://dx.doi.org/10.3390/en11112868.

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A novel Pulse-Width-Modulation (PWM) quasi-resonant active-clamp phase-shifted full-bridge converter is presented and analyzed in this paper. In the proposed topology, an active-clamp switch and a clamp capacitor that resonates with the leakage inductance of transformer are employed at the secondary side. The active-clamp circuit helps all of the primary switches in achieving both zero-voltage switching (ZVS) turn-on and nearly zero-current switching (ZCS) turn-off over the entire load range, and resets the primary current during the freewheeling interval. The operation of the active-clamp cir

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19

Cacciotto, Fabio, Alessandro Cannone, Emanuele Cassarà, and Santi Agatino Rizzo. "Analysis and Optimization of a Regenerative Snubber for a GaN-Based USB-PD Flyback Converter." Electronics 13, no. 6 (2024): 1045. http://dx.doi.org/10.3390/electronics13061045.

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This paper presents a high-efficiency GaN-based 65 W Quasi-Resonant (QR) Flyback converter. The converter is characterized by a wide input voltage range and a variable output voltage, and it is designed as a Switch Mode Power Supply (SMPS) for high power density USP-Power Delivery (USB-PD) applications. To increase the efficiency and power density, a regenerative snubber clamp solution has been used to limit the excursion of the drain voltage during the power switch turn-off. The activity involved the modeling of the converter, the sizing of the regenerative snubber, and the design of the flyb

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20

Du, Yin Jing, Wei Kang, Jun Liu, and Li Xia Zhang. "Research on the Influence of 500kV Power Engineering Materials Line Parameters to EFT/B." Advanced Materials Research 830 (October 2013): 76–80. http://dx.doi.org/10.4028/www.scientific.net/amr.830.76.

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In this paper, the influence of 500kV power line engineering materials parameters to EFT/B is discussed. When the 500kV line isolation switch cut off no-load line, arc would generate between the disconnecting switch. This paper mainly discussed the influence that disconnecting time on the electrical fast transient burst. At the time of the current zero-crossing, if the arc gap dielectric strength is less than the arc gap recovery voltage, the arc gap will be broken-down and the arc reignites. This paper analyses the influence on EFT/B caused by different power line engineering materials parame

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21

Zeng, Yujie, Wenlong He, Ihor Vasyltsov, Jiali Pang, and Lin Chen. "Acceleration of Large Transformer Model Training by Sensitivity-Based Layer Dropping." Proceedings of the AAAI Conference on Artificial Intelligence 37, no. 9 (2023): 11156–63. http://dx.doi.org/10.1609/aaai.v37i9.26321.

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Transformer models are widely used in AI applications such as Natural Language Processing (NLP), Computer Vision (CV), etc. However, enormous computation workload be-comes an obstacle to train large transformer models efficiently. Recently, some methods focus on reducing the computation workload during the training by skipping some layers. How-ever, these methods use simple probability distribution and coarse-grained probability calculation, which significantly affect the model accuracy. To address the issue, in this paper we propose a novel method to accelerate training—Sensitivity-Based Laye

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22

Zhang, Ziyue, Zijing Wang, and Song Xiao. "Analysis of overvoltage impact on shell-type on-board traction transformer by multi-physics field simulation." Advances in Engineering Technology Research 9, no. 1 (2024): 715. http://dx.doi.org/10.56028/aetr.9.1.715.2024.

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With the rapid development and increasing demands for the high-speed railway in China, it is of great significance to examine the defects of the high-speed train and ensure the safety of the operating railway. In the actual operation of the high-speed train, there is a split-phase section to transit the train to the next substation power supply arm. In this particular stage, operational overvoltage would occur as the VCB and the pantograph switch on and off, which threatens the safety of the operation of high-speed trains and contributes to the breakdown of transformer windings, which is indis

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23

Al-Omari, Ali Hussein, and Saif Al-Zubaidi. "High efficiency step-up converter using single switch with coupled inductors." Indonesian Journal of Electrical Engineering and Computer Science 25, no. 2 (2022): 690. http://dx.doi.org/10.11591/ijeecs.v25.i2.pp690-696.

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Due to high demand for voltage boosting in the field of renewable energy sources, a novel topology of step-up converter with single switch is proposed in this paper. The converter uses single switch with coupled inductors architecture. The proposed topology enables to control the stepping-up gain by adjusting the duty cycle and selecting appropriate turn ratio of the coupled inductors. The two coupled inductors in the circuit can act as a step-up transformer. Moreover, the proposed technique aims to harness the turning off voltage stresses across the switching element and suppress the stress b

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24

Hussein, Al-Omari Ali, and Saif Al-Zubaidi. "High efficiency step-up converter using single switch with coupled inductors." Indonesian Journal of Electrical Engineering and Computer Science 25, no. 2 (2022): 690–96. https://doi.org/10.11591/ijeecs.v25.i2.pp690-696.

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Due to high demand for voltage boosting in the field of renewable energy sources, a novel topology of step-up converter with single switch is proposed in this paper. The converter uses single switch with coupled inductors architecture. The proposed topology enables to control the stepping-up gain by adjusting the duty cycle and selecting appropriate turn ratio of the coupled inductors. The two coupled inductors in the circuit can act as a step-up transformer. Moreover, the proposed technique aims to harness the turning off voltage stresses across the switching element and suppress the stress b

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25

Da Silva, Glauco E. R., Carlos M. de O. Stein, Jean P. Da Costa, et al. "An Isolated Active-Clamped Circuit Current-Fed Half-Bridge Converter." Eletrônica de Potência 30 (February 20, 2025): e202522. https://doi.org/10.18618/rep.e202522.

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This paper presents an isolated regenerative active-clamped circuit designed for the current-fed half-bridge (IRACCFHB) converter. Its primary function is to reduce high voltage spikes across the main switches caused by energy stored in the leakage inductance of the power transformer using a clamping capacitor. This recovered energy is delivered efficiently to the load, maintaining the converter's high efficiency and voltage ratio. The proposed auxiliary circuit employs a single active switch with the same ground reference as the main switches, eliminating the need for an isolated gate driver.

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26

Nugraha, Anggara Trisna, Moch Fadhil Ramadhan, and Muhammad Jafar Shiddiq. "DISTRIBUTED PANEL-BASED FIRE ALARM DESIGN." JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) 5, no. 1 (2022): 07–14. http://dx.doi.org/10.26905/jeemecs.v5i1.6030.

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The shopping center switchboard system consists of several parts: a 20 kV cabinet to a 20 kV to 380 V step-down transformer, which is then provided to the user to control the newly upgraded LVMDP (low voltage main switchboard). Before distributing to users, they need to pay attention to the fixed power factor of the capacitor bank. Lack of an exemplary power factor will cause an inductive load on the capacitor bank, high temperatures due to high loads will damage the capacitor bank. A switchboard safety automation technology with a microcontroller control system has been proposed to complete t

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27

Ham, Seok-Hyeong, Yoon-Geol Choi, Hyeon-Seok Lee, Sang-Won Lee, Su-Chang Lee, and Bongkoo Kang. "High-efficiency Bidirectional Buck–Boost Converter for Residential Energy Storage System." Energies 12, no. 19 (2019): 3786. http://dx.doi.org/10.3390/en12193786.

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This paper proposes a bidirectional dc–dc converter for residential micro-grid applications. The proposed converter can operate over an input voltage range that overlaps the output voltage range. This converter uses two snubber capacitors to reduce the switch turn-off losses, a dc-blocking capacitor to reduce the input/output filter size, and a 1:1 transformer to reduce core loss. The windings of the transformer are connected in parallel and in reverse-coupled configuration to suppress magnetic flux swing in the core. Zero-voltage turn-on of the switch is achieved by operating the converter in

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28

Wang, Yanwen, Le Wang, Sven G. Bilén, and Yan Gao. "Research on Safety Technology for High-Speed Interruption for Mining Flameproof Movable Substation." Energies 13, no. 4 (2020): 934. http://dx.doi.org/10.3390/en13040934.

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Due to the working condition of low-voltage cabling from the mining flameproof movable substation to the loads of the mining face being poor, it is easy to cause various external mechanical damages to the cable sheaths. Furthermore, a single-phase earth leakage fault or short-circuit fault can occur when the low-voltage cable sheaths are damaged, and electric sparks caused by these faults can lead to a gas explosion. As the gas detonation time caused by the above faults is usually more than 5 ms, the high-speed interruption solid-state switch which controls the cables must cut off the current

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29

Zhuang, Longyu, Kai Zhu, Junfeng Rao, and Jie Zhuang. "Solid-state Marx generator based on saturable pulse transformer and fast recovery diodes." Journal of Instrumentation 18, no. 10 (2023): P10036. http://dx.doi.org/10.1088/1748-0221/18/10/p10036.

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Abstract Solid-state compact Marx generator using saturable pulse transformer (SPT) and fast recovery diodes has been proposed. The primary circuit is switched by three MOSFETs connected in parallel. The SPT functions as a step-up transformer to increase the voltage amplitude and as a closing switch for the secondary circuit. Meanwhile, all the SPTs share the same magnetic core to achieve a compact structure and ensure good synchronization. The energy storage capacitors on the secondary sides are charged through the unsaturated SPT. When the SPT saturates, the capacitors firstly transfer a lit

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30

Yau, Yeu-Torng, Kuo-Ing Hwu, and Chao-Wei Wang. "Bridgeless Isolated AC LED Driver." Processes 9, no. 7 (2021): 1173. http://dx.doi.org/10.3390/pr9071173.

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A novel bridgeless isolated AC LED driver is developed, which improves LED utilization and application flexibility due to a coupled inductor inserted between the bidirectional switch and the LED module without any output electrolytic capacitor. By reducing the turns ratio of the coupled inductor, the voltage across the secondary side will be decreased so as to lessen the voltage across the LED strings and hence reduce the number of LEDs, thereby making the load design of the AC LED driver more flexible. It is noted that the coupled inductor plays a role of not only galvanic isolation but also

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31

Gireesh Kumar, Devineni, Nagineni Venkata Sireesha, D. S. Naga Malleswara Rao, Kshatri Sainadh Singh, Prashant Chaudhary, and T. V. V. Pavan kumar. "Performance analysis of ZVS and ZCS boost converters for Solar Photo Voltaic Applications." E3S Web of Conferences 430 (2023): 01004. http://dx.doi.org/10.1051/e3sconf/202343001004.

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This paper describes a useful modulated, asymmetric full-bridge converter for sustainable solar PV applications. The suggested converter achieves zero-voltage switching (ZVS) on the main side’s power switches and reduces circulating current loss by utilizing a full-bridge architecture and an asymmetric control method. The blocking capacitor and the leakage inductance of the transformer operate in resonance to further provide the Zero Current Switching (ZCS) off for the output diode without the need for any further circuitry. Output diode reverse recovery is no longer a concern as a result. Add

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32

Sayed, Khairy, Mohammed G. Gronfula, and Hamdy A. Ziedan. "Novel Soft-Switching Integrated Boost DC-DC Converter for PV Power System." Energies 13, no. 3 (2020): 749. http://dx.doi.org/10.3390/en13030749.

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This paper presents a novel soft-switching boost DC-DC converter, which uses an edge-resonant switch capacitor based on the pulse width modulation PWM technique. These converters have high gain voltage due to coupled inductors, which work as a transformer, while the boost converter works as a resonant inductor. Upon turning on, the studied soft switching circuit works at zero-current soft switching (ZCS), and upon turning off, it works at zero-voltage soft switching (ZVS) while using active semiconductor switches. High efficiency and low losses are obtained while using soft switching and auxil

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33

Zheng, Wei, Cong Hu, Bin Zhao, et al. "A Two-Stage DC/DC Isolated High-Voltage Converter with Zero-Voltage Switching and Zero-Current Switching Applied in Electronic Power Conditioners." Energies 15, no. 17 (2022): 6378. http://dx.doi.org/10.3390/en15176378.

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This paper presents a two-stage DC/DC converter with high efficiency utilized in an electronic power conditioner (EPC), which is widely applicable in satellite communications, etc. The galvanically isolated converter contains two cascaded converters: a buck converter, which is a pre-regulator operating under a closed-loop condition, and a push–pull converter, which is intended to boost the input voltage, operating under an open-loop condition. In the push–pull converter, the power switches, including the main switches and the rectifier diodes, operate under zero-voltage switching (ZVS) and zer

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34

Horabin, J. I., and P. Schedl. "Sex-lethal autoregulation requires multiple cis-acting elements upstream and downstream of the male exon and appears to depend largely on controlling the use of the male exon 5' splice site." Molecular and Cellular Biology 13, no. 12 (1993): 7734–46. http://dx.doi.org/10.1128/mcb.13.12.7734-7746.1993.

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The on/off state of the binary switch gene Sex-lethal (Sxl), which controls somatic sexual development in Drosophila melanogaster, is regulated at the level of alternative splicing. In males, in which the gene is off, the default splicing machinery produces nonfunctional mRNAs; in females, in which the gene is on, the autoregulatory activity of the Sxl proteins directs the splicing machinery to produce functional mRNAs. We have used germ line transformation to analyze the mechanism of default and regulated splicing. Our results demonstrate that a blockage mechanism is employed in Sxl autoregul

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Horabin, J. I., and P. Schedl. "Sex-lethal autoregulation requires multiple cis-acting elements upstream and downstream of the male exon and appears to depend largely on controlling the use of the male exon 5' splice site." Molecular and Cellular Biology 13, no. 12 (1993): 7734–46. http://dx.doi.org/10.1128/mcb.13.12.7734.

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The on/off state of the binary switch gene Sex-lethal (Sxl), which controls somatic sexual development in Drosophila melanogaster, is regulated at the level of alternative splicing. In males, in which the gene is off, the default splicing machinery produces nonfunctional mRNAs; in females, in which the gene is on, the autoregulatory activity of the Sxl proteins directs the splicing machinery to produce functional mRNAs. We have used germ line transformation to analyze the mechanism of default and regulated splicing. Our results demonstrate that a blockage mechanism is employed in Sxl autoregul

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Priyanka, Y. "Load Demand Response Controller." International Journal for Research in Applied Science and Engineering Technology 11, no. 6 (2023): 3810–15. http://dx.doi.org/10.22214/ijraset.2023.54198.

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Abstract: This project aims to design a system which helps electricity consumers to monitor and control their electrical loads. In this system, the energy meter is connected to an optocoupler which provides optical isolation and transfers electrical signals between the energy meter and Arduino UNO. This system has a step-down transformer and Regulated Power Supply (RPS) to provide supply to Arduino UNO and to the loads through electromagnetic relays. The electromagnetic relays act like a switch for the operation of the loads. The system is enabled with an Arduino UNO which acts like a control

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Klemen Deželak, Andrej Korak, Tatjana Konjic, Gorazd Štumberger, and Jože Voršič. "The impact of events in the Slovene high – voltage network on the power quality in the distribution networks." Journal of Energy - Energija 59, no. 1-4 (2022): 46–51. http://dx.doi.org/10.37798/2010591-4277.

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This work analyses the impact of different events in Slovene high-voltage network on power quality in the 20 kV and 0.4 kV distribution networks. In order to perform the analysis a simplified dynamic model of the Slovene power system was build in the program package Matlab/Simulink, using toolbox PowerSys. The obtained model is appropriate for simulation of electromagnetic transients in duration up to a few seconds. It contains simplified dynamic models of all main generators and power transformers installed in the Slovene power system, detailed models of 400 kV, 220 kV and 110 kV networks, si

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Han, Bangzhong. "Prospect Analysis of High Frequency Inverter Used in ESP." Electronics Science Technology and Application 2 (December 3, 2015): 4. http://dx.doi.org/10.18686/esta.v2i1.2.

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It has been difficult for the old ESP to meet the new dust emission standards, and the update of the equipment costs a lot of money, therefore, how to reach a higher cost performance becomes the focus of attention. After researches we found that the replacement of the industrial frequency power with the high-frequency inverter of the ESP power can greatly improve the collection efficiency, with a high cost performance and a good prospect of application. The core idea of electrostatic precipitators of high frequency inverter is to transfer three-phase working frequency power into DC power, make

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Yahaya, Y., Ismail, G. S., and Buhari, M.A. "Experimental Design and Implementation of AC – DC Handset Travel Charger." International Journal of Science for Global Sustainability 6, no. 4 (2021): 7. http://dx.doi.org/10.57233/ijsgs.v6i4.61.

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Handset charger is device which charges a cellphone from an available direct current (DC) source. Moreover, a DC cellphone charger forms as an integral part of a cellphone package which is being used in conjunctions with san alternating current (AC) power supply. A simple off-line fly back switch mode buck converter charger is designed and implemented to charge cell phone from an AC source. The circuit is targeted to operate on universal input voltage range of 85 to 265 V AC. Minimizing cost and size, the circuit was designed to operate on a high frequency transformer. The design was first con

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JOAIB, A. SHAMALIK, and Y. D. SHAHAKAR PROF. "MULTIMACHINE POWER SYSTEM STABILITY ENHANCEMENT BY USING STATIC SYNCHRONOUS SERIES COMPENSATOR (SSSC) WITH PI CONTROLLER." IJIERT - International Journal of Innovations in Engineering Research and Technology 4, no. 12 (2017): 6–10. https://doi.org/10.5281/zenodo.1456252.

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<strong>In recent years power electronics devices has seen many advances,due to this advancement in FACTS devices have increased. Now a days FACTs devices are more efficient and more widely used. Facts devices connected in power system offers many advantages which can solve problems of power system control. FACTs devices can help in improving problems like voltage regulation,transfer capacity enhancement and better power flow control. Th e main purpose of implementing FACTS devices is to increase transmission line capacity of transmission line. There are two different techniques by which FACTS

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Gao, Jing, Ziming Liu, Jinming Luo, Hongjiang Wang, Yiqi Liu та Junyuan Zheng. "A Bi-Directional DC Solid-State Circuit Breaker Based on Flipped Γ-Source". Energies 15, № 3 (2022): 745. http://dx.doi.org/10.3390/en15030745.

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As the continuous consumption of non-renewable energy leads to resource shortages, distributed PV generation technology has received widespread attention. The DC microgrid is an effective way to connect distributed PV generation. However, DC microgrids have numerous challenges, such as the absence of zero current crossing point and high fault current rising rate. In the paper, a bi-directional DC solid-state circuit breaker based on flipped Γ-source is proposed to overcome some of the challenges in DC microgrid. The topology uses the mutual inductance current generated by the transformer to fo

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Dimitrov, Borislav, Khaled Hayatleh, Steve Barker, Gordana Collier, Suleiman Sharkh, and Andrew Cruden. "A Buck-Boost Transformerless DC–DC Converter Based on IGBT Modules for Fast Charge of Electric Vehicles." Electronics 9, no. 3 (2020): 397. http://dx.doi.org/10.3390/electronics9030397.

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A transformer-less Buck-Boost direct current–direct current (DC–DC) converter in use for the fast charge of electric vehicles, based on powerful high-voltage isolated gate bipolar transistor (IGBT) modules is analyzed, designed and experimentally verified. The main advantages of this topology are: simple structure on the converter’s power stage; a wide range of the output voltage, capable of supporting contemporary vehicles’ on-board battery packs; efficiency; and power density accepted to be high enough for such a class of hard-switched converters. A precise estimation of the loss, dissipated

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Ivakhno, Volodymyr, Volodymyr Zamaruiev, Oleksandr Plakhtiy, Volodymyr Nerubatskyi, and Maryna Filipieva. "Consideration of DC/DC converter for photovoltaics with soft switching with modified push-pull current source inverter circuit." Technology audit and production reserves 4, no. 1(78) (2024): 51–57. http://dx.doi.org/10.15587/2706-5448.2024.310800.

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The object of research is the power part of the two-stage converter. The paper evaluates the parameters of the power part of the two-stage converter with transformer isolation, designed for the transfer of solar battery energy to the 400 V constant voltage network with the possibility of maintaining the maximum power point tracker (MPPT). The primary stage of the converter is made as a push-pull current source inverter topology with an additional switch, which is installed between the common point of the transformer's primary half-windings and the common point of the primary stage switches. Th

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Oghogho, Ikponmwosa, Avwerosuo Reuben Omughele, Smith O. Otuagoma, et al. "SMART DISTRIBUTOR SYSTEM FOR MICRO GRID CONTROL." Engineering and Technology Journal 8, no. 04 (2023): 2107–15. https://doi.org/10.5281/zenodo.7851921.

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A smart distributor system for controlling a micro grid has been developed in this work. The system switches ON different generators one after the other as the consumer load demand increases or switches them OFF one after the other as the consumer load decreases. This was achieved using a microcontroller, current and voltage transformer. The microcontroller was programmed using embedded C-language to communicate with the current and voltage transformers to give necessary output signals to activate or deactivate the generators. In this design, the maximum load demand of each generator was place

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Jabr, Salam, and Adel A. Obed. "Photovoltaic flyback micro-inverter with power decoupling technique." Indonesian Journal of Electrical Engineering and Computer Science 15, no. 1 (2019): 9. http://dx.doi.org/10.11591/ijeecs.v15.i1.pp9-19.

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This paper proposes a low-cost single-phase micro-inverter for grid-connected photovoltaic (PV) system. The lifetime of the conventional flyback micro-inverter is shortened, because lifetime of a large electrolyte capacitor is shortened. For this reason, the need for a large electrolyte capacitor is avoided by proposing power decoupling (PD) circuit. Dual advantages are achieved by proposed circuit, first high-power decoupling with small capacitances and other to protect the main MOSFET from spike voltage stress during turn off time without needing for additional a snubber circuit. Consequentl

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KALINICHENKO, V., and I. PRIDATKO. "Some aspects of the calculation of short circuits in mine distribution networks. The calculation of the effective values of the short-circuit currents is carried out in order to determine the minimum." Journal of Electrical and power engineering 14, no. 1 (2020): 66–69. http://dx.doi.org/10.31474/2074-2630-2020-1-66-69.

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The calculation of the effective values of the short-circuit currents is carried out in order to determine the minimum value of the current of the two- phase short-circuit required to select the settings of the means of protection, as well as the maximum value of the current of the three-phase short-circuit required to test the switching equipment for the ability to switch off. In most studies, the calculation of short-circuit currents is carried out only taking into account the total resistance of the transformer substation and the cable network. They also take into account the maximum short-

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Dudung, Mulyadi, and W. Biantoro Agung. "Potential Utilization of Water Distribution System Using Iot-Based EnergySaving Dual Reservoir in Housing." Engineering and Technology Journal 10, no. 03 (2025): 4041–51. https://doi.org/10.5281/zenodo.14999771.

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The development of an area requires adequate supporting resources, particularly concerning water availability. High household water consumption is a significant contributor to water scarcity in residential areas, necessitating solutions for water availability that leverage natural reservoirs and the latest efficient, energy-saving, and environmentally friendly technology. This research aims to calculate the water demand of an area and design IoT-based dual reservoir technology for residential areas to support drinking water supply and distribution. The research method includes quantitative ana

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Xie, Weijin, Wenguang Luo, and Yongxin Qin. "Integrated DC/DC Converter Topology Study for Fuel Cell Hybrid Vehicles with Two Energy Sources." World Electric Vehicle Journal 14, no. 1 (2022): 9. http://dx.doi.org/10.3390/wevj14010009.

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Conventional hybrid vehicles with two energy sources require two separate on-board DC/DC converters to connect the battery and the fuel cell, which have the disadvantages of large size, high cost, high losses and few applicable operating conditions. To address this situation, this paper proposes an optimized on-board integrated DC/DC converter with a non-isolated multi-port scheme that integrates a unidirectional port for the fuel cell and a bidirectional port for the battery and load. This can achieve a combined energy supply and recovery with a single integrated converter, effectively overco

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Adesina, Lambe Mutalub, Olalekan Ogunbiyi, and Bilkisu Jimada-Ojuolape. "Development of an Automatic Phase Selector for Nigerian Power Utility Customers." ABUAD Journal of Engineering Research and Development (AJERD) 7, no. 2 (2024): 16–26. http://dx.doi.org/10.53982/ajerd.2024.0702.02-j.

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Power utility customers in a developing country like Nigeria have constituted a habit of changing the electricity supply line from an unavailable or unstable phase to the most available or stable phase. The category of customers involved in this character are those on single phase power supply. However, this act is being carried out manually at the meter point using the cut-out fuses. This attitude results in phase unbalances, overheating electrical equipment including feeder pillars, transformer coils, network faults, and overall system instability. Thus, this paper presents the development o

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Wardani, Ilham Setiya, and Saiful Manan. "POWER SUPPLY INVERTER DC-DC SEBAGAI SUPPLY AUDIO AMPLIFIER." Gema Teknologi 18, no. 4 (2016): 5. http://dx.doi.org/10.14710/gt.v18i4.21909.

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Ilham Setiya Wardani, Saiful Manan in this paper explain that Utilization of power electronics components in the process of conversion of electrical energy has been growing from year to year. for controlling power from one form to another is very important and the characteristics of the equipment of power electronics has allowed it. DC-DC converters can also be called a wave DC inverter capable of producing symmetrical widely used and applied in industry and everyday life.In the inverter power supply are made using half-bridge converter topology. Half-bridge converter topology has several adva

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