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Journal articles on the topic 'Zero Crossing Based Circuit(ZCBC)'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Min, Dong-Jick, and Jae Hoon Shim. "A Charge-Sharing-Based Two-Phase Charging Scheme for Zero-Crossing-Based Integrator Circuits." Electronics 8, no. 7 (2019): 821. http://dx.doi.org/10.3390/electronics8070821.

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As an effort to improve the energy efficiency of switched-capacitor circuits, zero-crossing- based integrators (ZCBI) that consist of zero-crossing detectors and charging circuits have been proposed. To break the trade-off between accuracy and speed, ZCBI typically employs a two-phase charging scheme that relies on an additional threshold for zero-crossing detection. This paper proposes a simpler realization method of the two-phase charging scheme by means of charge sharing. To demonstrate feasibility of the proposed method, we designed and fabricated a second-order delta-sigma modulator in 18

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2

Su, Wei Yi, and Guang Li. "Zero Crossing Point Phase Detector Simulation Based on PROTEUS." Advanced Materials Research 1003 (July 2014): 177–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1003.177.

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This paper designed a kind of phase D-value measuring system based on microchip MCU, which adopted the multi-cycles measuring algorithm to improve the accuracy. This system used the zero crossing point phase detector, hardware and software passed the computer simulation based on PROTEUS and MPLAB, the measuring accuracy satisfied the design requirements, this design thought was successfully applied to smart grid access devices. The simulation and practical results show that compared with the traditional products, the phase D-value measuring system based on microchip MCU has a simple circuit, l

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3

Xi, Dong He, and Juan Du. "Temperature and Humidity Controller Based on P89LPC920FDH." Applied Mechanics and Materials 539 (July 2014): 577–80. http://dx.doi.org/10.4028/www.scientific.net/amm.539.577.

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This paper describes the design of a temperature and humidity controller, the controller takes P89LPC920FDH SCM as the core. P89LPC920FDH micro-controller integrated with internal comparator, watchdog timer, and reset circuit modules. The main control circuit board uses comparator to detect alternating current zero crossing point, uses the timer after a time delay to thyristor trigger pulse to control the hair AC conduction angle, thereby heating power control circuit to control the temperature and humidity of the environment, the purpose of.

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4

Teng, Shangfu, Zhifeng Zhang, and Liye Xiao. "Research on a Novel DC Circuit Breaker Based on Artificial Current Zero-Crossing." IEEE Access 8 (2020): 36070–79. http://dx.doi.org/10.1109/access.2020.2975080.

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5

Wang, Hui. "BLDC Motor Sensorless Control System Based on ADSP-BF548." Applied Mechanics and Materials 494-495 (February 2014): 1253–56. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.1253.

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In this thesis , the control strategy based on sensorless BLDCM(Brushless DC Motor) has been researched.A control system for BLDCM operating on ADSP-BF548 has been given. we focus on studying the control strategy of sensorless BLDC motor based on back-EMF detection, and present a control system for BLDC motor based on ADSP-BF548 special for motor control. The calculation method of back EMF in BLDC motor was deduced and the hardware circuit of line voltage detecting was designed. A pre-position starting tactics based on back EMF detection and a tactics of phase converting by postponing back-emf

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6

Li, Chun Feng, Ke Ming Li, and Xiang Zhang. "Research on Circuit Design for Speed Adjusting Hardware of Brushless DC Motor Based on the Two-Dimensional Fuzzy Controller." Advanced Materials Research 705 (June 2013): 509–15. http://dx.doi.org/10.4028/www.scientific.net/amr.705.509.

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The essay first establishes the general design for intelligent rotary speed system of the brushless DC motors, then based on the general design scheme, two-dimensional fuzzy controller, adaptive current adjustor and mainly used hardware circuits are designed. The mainly used hardware circuit design includes the circuit design of current detecting circuit, voltage detecting circuit, high-speed optocoupler, motor driver circuit, zero-crossing comparator circuit, etc. At last the designed controller and hardware circuits are tested to achieve optimum effects for rotary speed control through valid

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7

Kim, Geon, Jin Sung Lee, Jin Hyo Park, Hyun Duck Choi, and Myoung Jin Lee. "A Zero Crossing Hybrid Bidirectional DC Circuit Breaker for HVDC Transmission Systems." Energies 14, no. 5 (2021): 1349. http://dx.doi.org/10.3390/en14051349.

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With the increasing demand for renewable energy power generation systems, high-power DC transmission technology is drawing considerable attention. As a result, stability issues associated with high power DC transmission have been highlighted. One of these problems is the fault current that appears when a fault occurs in the transmission line. If the fault current flows in the transmission line, it has a serious adverse effect on the rectifier stage, inverter stage and transmission line load. This makes the transmission technology less reliable and can lead to secondary problems such as fire. T

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8

Varun, Ch. "Microcontroller based Automatic Power Factor Correction for Industrial Power use to Minimize Penalty." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 2593–97. http://dx.doi.org/10.22214/ijraset.2021.36903.

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In this proposed system, two zero crossing detectors are used for detecting zero crossing of voltage and current. The project is meant to attenuate penalty for industrial units using automatic power factor correction unit. The microcontroller utilized during this project belongs to 8051 family. The interruption between the zero-voltage pulse and zero-current pulse is duly generated by suitable operational amplifier circuits in comparator mode is fed to 2 interrupt pins of a microcontroller. The program takes over to actuate appropriate number of relays from its output to bring shunt capacitors

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9

Bangsawan, Hadid Tunas, Lukman Hanafi, and Deny Suryana. "ZERO CROSSING DETECTOR AND TIMER BASED SUPPLY VOLTAGE AT PEAK BREAKER." Jurnal Standardisasi 22, no. 1 (2020): 55. http://dx.doi.org/10.31153/js.v22i1.780.

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<p><em>In this study, a supply voltage at peak breaker is made to do the plug discharge test. Plug discharge (capacitor residual voltage) testing on IEC 60335-1 is a challenge for engineers. Requirement for the test are disconnecting supply voltage from the Equipment Under Testing (EUT) at its peak value. Most laboratory did this test manually, so the test might be carried out repeatedly so that the requirement is obtained. This system is using zero crossing detector and timer for detect the peak waave. The zero crossing detector circuit find the time when the voltage cross the 0 v

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10

Zhu, Wu, Yong Wang, Chao Jiang, and Jia Min Zhu. "Design of Detection System for Residual Voltage Based on SOPC." Applied Mechanics and Materials 241-244 (December 2012): 180–85. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.180.

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In accordance with the relevant safety standard requirements for electrical equipment, this thesis proposes a residual voltage detection method with high accuracy and low power consumption . The power frequency synchronization signal is obtained by the measuring instrument with the zero-crossing detection circuit used. In the power frequency AC peak moment the measured instrument's power is cut off and the measured equipment's residual voltage is sampled by the input circuit with the high input impedance. Under the control of the NIOSII, the on-line detection of power-down residual voltage of

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11

Song, Qiang, and Weifeng Jia. "On Improving the Time Synchronization Precision in the Electric Power System." Open Electrical & Electronic Engineering Journal 9, no. 1 (2015): 61–66. http://dx.doi.org/10.2174/1874129001509010061.

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In order to improve the time synchronization precision in the electronic power system, the transmission of the timing information is demodulated based on FPGA. Based on the time service accuracy, the transmission timing information adopts IRIG-B code, the digital Costas loop is introduced in the process of FPGA demodulating IRIG-B code, which can extract the zero-crossing point information of IRIG-B code to avoid the problems of zero drift and pulse jitter in zero-crossing detection circuit. In this article, the time unifying terminal equipment has adopted the BeiDou satellite navigation recei

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12

Hashemi, Ehsan, and Kaveh Niayesh. "DC Current Interruption Based on Vacuum Arc Impacted by Ultra-Fast Transverse Magnetic Field." Energies 13, no. 18 (2020): 4644. http://dx.doi.org/10.3390/en13184644.

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In this paper, the effect of an external ultrafast transverse magnetic field (UFTMF) on a vacuum arc in the diffused mode has been studied. According to the results of studies, a novel approach for making a zero-crossing in a DC arc current has been presented. Plasma voltage fluctuations of the vacuum arc, which are caused by UFTMF, have been investigated via finite element simulation and two-fluid description of plasma physics. By making an appropriate UFTMF through an external circuit, the arc current can be commuted successfully from the vacuum interrupter (VI) to a parallel capacitor and c

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13

Xiang, Xin Jian, and Zhang Lin. "The Design of Arc Fault Circuit Interrupter Based on Wavelet Transformation." Applied Mechanics and Materials 260-261 (December 2012): 476–81. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.476.

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Arc-fault protection is a new circuit protection technology and its function is breaking the circuit in time when arc-fault appears and protecting distribution line from electric fire. This paper introduces the arc-fault signal characteristics, detection method and the hardware and software design of AFCI. Through analysis and research, arc-fault signal has asymmetry waveform: the positive and the negative half cycles, the waveform at the zero crossing of a steep shoulder and waveform characteristics. Wavelet transform can detect characteristics of arc-fault effectively. AFCI detects the signa

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14

Liu, Lianxi, Yu Shang, Jiangwei Cheng, and Zhangming Zhu. "An Efficient Interface Circuit for Miniature Piezoelectric Energy Harvesting with P-SSHC." Journal of Circuits, Systems and Computers 29, no. 08 (2019): 2020004. http://dx.doi.org/10.1142/s0218126620200042.

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A miniature and high-efficiency interface circuit based on parallel synchronous switch harvesting on capacitors (P-SSHC) for piezoelectric energy harvesting (PEH) is proposed in this paper. This interface circuit consists of a two-stage synchronous rectifier and the P-SSHC circuit. The two-stage synchronous rectifier, composed of a negative voltage converter (NVC) and an active diode (AD), achieves higher efficiency compared with the full-bridge rectifier (FBR). In addition, the two-stage synchronous rectifier detects the zero-crossing moment of the input current; therefore, an extra current z

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15

Kwak, Bongwoo, and Jonghoon Kim. "Digital Implementation Method for Synchronous PWM Control of GaN Transistor at Zero-Crossing of Totem-Pole PFC in Energy Storage Applications." Electronics 10, no. 1 (2020): 30. http://dx.doi.org/10.3390/electronics10010030.

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A digital control scheme for GaN transistor-based totem pole power factor correction (PFC) is proposed in this paper. At the zero crossing, the totem pole PFC has a discontinuous conduction mode (DCM) current section because of its driving method and circuit structure. In the DCM current section, when a typical synchronous switching technique is applied, the inductor current is reduced to less than zero, thereby reducing efficiency. Moreover, because of the nature of the circuit, power may be transferred in reverse. To prevent this, a new synchronous switch technique using the cycle by cycle (

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16

Zhao, Cui, and Tan. "Nonlinearity Correction in OFDR System Using a Zero-Crossing Detection-Based Clock and Self-Reference." Sensors 19, no. 17 (2019): 3660. http://dx.doi.org/10.3390/s19173660.

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Tuning nonlinearity of the laser is the main source of deterioration of the spatial resolution in optical frequency-domain reflectometry (OFDR) system. In this paper, we develop methods for tuning nonlinearity correction in an OFDR system from the aspect of data acquisition and post-processing. An external clock based on a zero-crossing detection is researched and implemented using a customized circuit. Equal-spacing frequency sampling is, therefore, achieved in real-time. The zero-crossing detection for the beating frequency of 20 MHz is achieved. The maximum sensing distance can reach the sa

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17

Husev, Matiushkin, Roncero-Clemente, Vinnikov, and Chopyk. "Bidirectional Twisted Single-Stage Single-Phase Buck-Boost DC-AC Converter." Energies 12, no. 18 (2019): 3505. http://dx.doi.org/10.3390/en12183505.

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This paper describes a bidirectional twisted single-phase single-stage buck-boost dc-ac converter based on an output unfolding circuit. This solution is derived by the combination of an inverting buck-boost dc-dc converter and an unfolding circuit. The operation principle, component design guidelines, along with the control approach are presented. The zero-crossing distortion problem is discussed and solved by a simple approach. The simulation and experimental results confirm all theoretical statements. Loss distribution and achievable efficiency are analyzed. Finally, the pros and cons of the

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18

Tapia, Lukas, Igor Baraia-Etxaburu, Juan José Valera, Alain Sanchez-Ruiz, and Gonzalo Abad. "Design of a Solid-State Circuit Breaker for a DC Grid-Based Vessel Power System." Electronics 8, no. 9 (2019): 953. http://dx.doi.org/10.3390/electronics8090953.

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Electric propulsion and integrated hybrid power systems can improve the energy efficiency and fuel consumption of different kinds of vessels. If the vessel power system is based on DC grid distribution, some benefits such as higher generator efficiency and lower volume and cost can be achieved. However, some challenges remain in terms of protection devices for this kind of DC grid-based power system. The absence of natural zero crossing in the DC current together with the fast and programmable breaking times required make it challenging. There are several papers related to DC breaker topologie

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19

Hemalatha, N., and S. Nageswari. "A New Approach of Position Sensorless Control for Brushless DC Motor." Current Signal Transduction Therapy 15, no. 1 (2020): 65–76. http://dx.doi.org/10.2174/1574362413666180713092948.

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Background: Position sensorless control technique for Permanent Magnets-Brush Less Direct Current (PM-BLDC) motor drive is considered in this paper. Materials and Methods: A new estimation based on sensorless technique is proposed for PMBLDC motor. Artificial Neural Network (ANN) is aided for the purpose. Results: The inputs to the ANN are the voltages of PM-BLDC motor and it estimates the sample signals to feed Zero Crossing Point (ZCP) detection circuit. The ZCP detection circuit provides ZCP signals for commutation logic which gives the commutation sequence to power switches. In order to pr

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20

Djukic, Slobodan. "Temperature independent current conveyor precision full-wave rectifier for low-level signal." Facta universitatis - series: Electronics and Energetics 22, no. 1 (2009): 117–23. http://dx.doi.org/10.2298/fuee0901117d.

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A circuit that provides precision rectification low-level input signal with low temperature sensitivity is presented in this paper. It utilizes an improved second type current conveyor based around current-steering output stage and voltage biased silicon diodes, rather than more usual current mirrors. Proposed design of the precision rectifier ensures good current transfer linearity in the range that satisfy class A of the amplifier and good voltage transfer characteristic for low level signals. Distortion during the zero crossing of the input signal is practically eliminated. Design of the pr

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21

Qi, Lei, Ming Zong, Shuyi Hao, and Xuejie Wang. "Breaking time control of back-to-back double E-type alternating current contactor." International Journal of Distributed Sensor Networks 16, no. 6 (2020): 155014772092889. http://dx.doi.org/10.1177/1550147720928892.

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The arc generated by breaking the main circuit exacerbates the ablation of the contact, which affects the life of the contactor seriously. By controlling the breaking time of the contactor and making contact break in the optimum time zone are the effective ways to weaken the arc. In this article, the contact movement characteristic is concerned directly in order to control the contact breaking time. A back-to-back double-E alternating current contactor is proposed, and its structural parameters are optimized by particle swarm optimization algorithm. The mathematical model of circuit and magnet

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22

Wang, Qiang, You Ren Wang, De Ming Kong, and Yong Wu. "A Novel Starting Method for Sensorless Brushless DC Motor with Low Cost." Applied Mechanics and Materials 336-338 (July 2013): 750–54. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.750.

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This paper presents a novel method to improve the starting performance for sensorless brushless DC motor (BLDCM) with low cost, based on the principle of back electromotive force (BEMF). The commutation points are extracted from three phase terminal voltages achieved by AD converters integrated in the microprocessor. The phase delay caused by the detection circuit is compensated. The start process consists of alignment, accelerating, and switching. In the accelerating process, the commutation instants are determined by the zero-crossing points and phase delay table. The motor can be started re

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23

Ho, Tze-Yee, Cong-Khoi Huynh, Tsung-Hsien Lin, and Shih-Wei Yang. "The Design and Implementation of a Sensorless Power Tool Based on a Microcontroller." Electronics 9, no. 6 (2020): 921. http://dx.doi.org/10.3390/electronics9060921.

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Power tools are basic working tools used for production and manufacturing in the machinery and mechanical industries. The motor drive plays an important role in power tool applications. The performance of the motor drive will then directly or indirectly affect the quality and precision of the processing metal components. Most of the traditional motor drive control of a brushless direct current (BLDC) motor employs the Hall-effect position sensors to detect the rotor position. However, the installing sensors are prone to degrading the performance due to variations in temperature and the harsh e

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24

Zhu, Ming Xing, and Jing Bo Shi. "Optimized Non-Dead-Time Control of Inverter with Two-Phase Modulated SVPWM." Advanced Materials Research 562-564 (August 2012): 1531–36. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.1531.

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In the inverter control system, two-phase modulated space vector pulse width modulation (SVPWM) algorithm has the advantages of minimum switch loss and higher utilization of direct current (DC) bus voltage. Non-dead-time control strategy can eliminate the problems of the dead time effects. But the traditional non-dead-time control strategy heavily depends on the current zero-crossing detection, which may cause the output voltage distortion or even a short circuit. Based on the analysis of the reason for the distortion, a new optimized non-dead-time control method is proposed. Two methods for t

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25

Wang, Yingjie, Bo Yang, Huifang Zuo, Haiyuan Liu, and Haohao Yan. "A DC Short-Circuit Fault Ride Through Strategy of MMC-HVDC Based on the Cascaded Star Converter." Energies 11, no. 8 (2018): 2079. http://dx.doi.org/10.3390/en11082079.

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A modular multilevel converter based high voltage direct current (MMC-HVDC) with DC fault self-clearing is adopted to deal with the DC short-circuit fault. However, the constant power load characteristic of the sub-modules causes capacitor voltages to diverge and the converter to go out of hot standby. To address this problem, a novel DC short-circuit fault ride through strategy is proposed. According to the polarities of grid voltages, the working or blockage of the upper and lower bridge arms is chosen according to six sections to obtain a cascaded star converter. The capacitor voltages of M

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26

Bendre, Varsha S., A. K. Kureshi, and Saurabh Waykole. "Design of Analog Signal Processing Applications Using Carbon Nanotube Field Effect Transistor-Based Low-Power Folded Cascode Operational Amplifier." Journal of Nanotechnology 2018 (December 4, 2018): 1–15. http://dx.doi.org/10.1155/2018/2301421.

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Carbon nanotube (CNT) is one of the embryonic technologies within recent inventions towards miniaturization of semiconductor devices and is gaining much attention due to very high throughput and very extensive series of applications in various analog/mixed signal applications of today’s high-speed era. The carbon nanotube field effect transistors (CNFETs) have been reconnoitred as the stimulating aspirant for the future generations of integrated circuit (IC) devices. CNFETs are being widely deliberated as probable replacement to silicon MOSFETs also. In this paper, different analog signal proc

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27

Sarwiji, Fathoni, Agus Pracoyo, and Agus Sukoco Heru Sumarno. "Rancangbangun Catu Daya Linier 5V, 12V dengan ZCD dan PWM." JURNAL ELTEK 19, no. 1 (2021): 80. http://dx.doi.org/10.33795/eltek.v19i1.289.

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Penelitian ini dilakukan untuk mendapatkan sebuah prototype rangkaian catu daya linier yang dilengkapi dengan rangkaian zero crossing detector dan pembangkit PWM yang dapat digunakan sebagai pelengkap modul praktikum elektronika daya, terutama pada percobaan pengendaliaaan beban ac dengan TRIAC secara digital. Pemicuan dapat dilakukan berdasar sudut fasa, yang memerlukan pulsa ZCD dan pemicuan on-off yang memerlukan PWM. Catu daya linier dipilih dalam rancangbangun ini dengan alasan kemudahan perhitungan rancangan dan mempunyai gangguaninterferensi frekuensi radio yang rendah. Tegangan output

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28

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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29

Al-Thahab, Osama Qasim Jumah, Ali Shaban Hasoony, and Ahmed Samawi Alkhafaji. "Sixteen level power factor correction by using arduino microcontroller based fuzzy idea." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 1 (2020): 156. http://dx.doi.org/10.11591/ijeecs.v17.i1.pp156-165.

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Nowadays, a controller that improves the power factor (PF) is automatically designed and implemented to correct the value of the power factor once they falls below a certain one. In industry, day by day, there is an increase in the use of domestic applications and inductive loads such that they consider the essential reason whose responsible on lowering the power factor. Therefore a development method is needed to improve the power factor by adding manually variable capacitors or automatically. Fuzzy algorithm can be used as an intelligent system to estimate the value of the capacitor that sho

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30

Thakur, Anant. "Improvement of Back EMF & Minimization of Torque Ripple of BLDC Motor." SMART MOVES JOURNAL IJOSCIENCE 5, no. 8 (2019): 1–7. http://dx.doi.org/10.24113/ijoscience.v5i8.220.

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In Brushless DC (BLDC) motor minimized the torque ripple with the help of electronically based commutators. When torque ripple is minimizes then copper loss is also minimizes. In this paper, our main aspect to decrease the torque ripples & improved the back emf of brushless dc (BLDC) motor. This paper shows that the torque produced by the BLDC motors with trapezoidal Back EMF is constant under ideal condition. Due to freewheeling torque ripples are produced which is reduced. In this paper rotor position is determined by the Zero Crossing Detection (ZCD) of back emf. Unlike old methods of c

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"Simulation of Three Phase Voltage Controlled Soft Switching Start of Induction Motor Drive." International Journal of Recent Technology and Engineering 8, no. 3 (2019): 8104–16. http://dx.doi.org/10.35940/ijrte.c6441.098319.

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In this paper a three phase voltage regulator (thyristor based) with RL load and induction motor load is simulated for fixed firing angle first. As was seen from the results obtained that the induction motor response is highly impaired with this fixed firing angle starting. The transient response as well as the steady state response is highly oscillatory in nature. Then a suitable firing scheme was developed to vary the firing angles of each thyristor in reference to the zero crossing of the respective phase voltages. The control circuit was studied for R-L load first and then the induction mo

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32

Kruizinga, B., P. A. A. F. Wouters, and E. F. Steennis. "Breakdown Behaviour of Damaged Low-Voltage Cables: Laboratory Experiments and Field Experience." Proceedings of the Nordic Insulation Symposium, no. 25 (October 3, 2017). http://dx.doi.org/10.5324/nordis.v0i25.2374.

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<p>Faults in Low-Voltage (LV) cables commonly develop from earlier inflicted damage. Outages can be preceded by high-current transients of duration too short to activate protective devices like fuses. This paper explores such early signatures of possible upcoming faults both by laboratory experiments and in a field study.<br />Upon exposure of moisture the breakdowns and their voltage and current characteristics are investigated for two LV cable types (OIP and PVC). In laboratory tests, a clear intermittent behaviour is observed. Typical breakdown signals show a current transient i

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