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Journal articles on the topic 'Phase to amplitude converter'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Tereshkin, Vladimir M., Irshat L. Aitov, Dmitriy A. Grishin, and Vyacheslav V. Tereshkin. "Three-Phase and Five-Phase Motor Windings Common Point Potential Ripple with Respect to the Converter Zero Termina." Vestnik MEI 2, no. 2 (2021): 51–59. http://dx.doi.org/10.24160/1993-6982-2021-2-51-59.

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The aim of the study is to determine the parameters characterizing the ripple of a motor's three- and five-phase windings common point potentials (for the star winding connection diagram) with respect to the converter zero point. One of the reserves for decreasing electromagnetically induced vibration of an electric motor with a rotating field is to increase the number of working winding phases. The study subject is a five-phase motor winding connected to a bridge converter, namely, its ability to reduce electromagnetically induced vibration in comparison with that in using a three-phase windi

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Zhang, Youjun, and Xinbo Ruan. "Three-Phase AC–AC Converter With Controllable Phase and Amplitude." IEEE Transactions on Industrial Electronics 62, no. 9 (2015): 5689–99. http://dx.doi.org/10.1109/tie.2015.2410761.

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3

Zhang, Youjun, and Xinbo Ruan. "AC–AC Converter With Controllable Phase and Amplitude." IEEE Transactions on Power Electronics 29, no. 11 (2014): 6235–44. http://dx.doi.org/10.1109/tpel.2014.2303199.

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4

Zheng, Hong, Yue Lei Shi, and Hang Hui Zhang. "Continuous PWM Modulation Strategy for NPC/H and H Bridge Hybrid Multilevel Converter." Advanced Materials Research 748 (August 2013): 510–13. http://dx.doi.org/10.4028/www.scientific.net/amr.748.510.

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f the ratio of NPC/H and H bridge hybrid multilevel converters DC supply voltage changed, the output voltage PWM waveform will be discontinuous. Thus an improved topology and control strategy is proposed. In new method, master converter operates at the fundamental frequency based on command voltage, slave converter adopts carrier phase shifted PWM technology (CPS-SPWM) at a higher frequency to enhance the quality of output voltage waveform. The amplitude of command voltage is higher than output voltage amplitude of the master converter at any time, to ensure that output voltage variation of bo

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5

Rahman, S. Abdul, and Estifanos Dagnew. "Voltage sag compensation using direct converter based DVR by modulating the error signal." Indonesian Journal of Electrical Engineering and Computer Science 19, no. 2 (2020): 608. http://dx.doi.org/10.11591/ijeecs.v19.i2.pp608-616.

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<p class="Text"><span>The aim of this paper is to present a modulation technique to achieve highest voltage sag compensation using direct converter based dynamic voltage restorer (DVR). The DVR topology proposed in this paper, has a direct converter and a series transformer. The direct converter is fabricated using only two bi-directional switches. The DVR is designed to compensate the sag in a phase by taking power from the same phase. The direct converter is connected between the series transformer and the line in which sag compensation is to be achieved. Conventionally, the PWM

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Zhao and Yang. "Parallel Control of Converters with Energy Storage Equipment in a Microgrid." Electronics 8, no. 10 (2019): 1110. http://dx.doi.org/10.3390/electronics8101110.

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The converter in a microgrid uses the active power and reactive power (PQ) control strategy when connected to the grid. In the case of failure of large power grid, the converters are required to be connected in parallel under the condition of island to provide power to the load. In this paper, a new control method for the parallel operation of converters based on V/F control is proposed. The V/F control is used to ensure the output voltages have the same amplitude and frequency, then the converters will only produce circulating current caused by phase angle inconsistency. The phase angle self-

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7

Zhang, Youjun, та Xinbo Ruan. "π Model AC–AC Converter With Controllable Phase and Amplitude". IEEE Transactions on Industrial Electronics 64, № 8 (2017): 6422–31. http://dx.doi.org/10.1109/tie.2017.2681998.

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8

Zhang, Youjun, Shuangfeng Guan, and Yuzhen Zhang. "Single-Stage AC–AC Converter With Controllable Phase and Amplitude." IEEE Transactions on Power Electronics 34, no. 7 (2019): 6991–7000. http://dx.doi.org/10.1109/tpel.2018.2875093.

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9

Nguyen, Thai-Thanh, Hyeong-Jun Yoo, Hak-Man Kim, and Huy Nguyen-Duc. "Direct Phase Angle and Voltage Amplitude Model Predictive Control of a Power Converter for Microgrid Applications." Energies 11, no. 9 (2018): 2254. http://dx.doi.org/10.3390/en11092254.

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Several control strategies of the finite control set model predictive controls (FCS-MPC) have been proposed for power converters, such as predictive current control (PCC), direct predictive power control (DPPC), and predictive voltage control (PVC). However, for microgrid (MG) applications, the control strategy of the FCS-MPC for a power converter might be changed according to the operation mode of the MG system, which results in a transient response in the system voltage or current during the mode transition. This study proposes a new control strategy of FCS-MPC for use in both islanded and g

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10

Benammar, M. "A novel amplitude-to-phase converter for sine/cosine position transducers." International Journal of Electronics 94, no. 4 (2007): 353–65. http://dx.doi.org/10.1080/00207210701233690.

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11

Faraj, Karrar Saad, and Jasim F. Hussein. "Analysis and Comparison of DC-DC Boost Converter and Interleaved DC-DC Boost Converter." Engineering and Technology Journal 38, no. 5A (2020): 622–35. http://dx.doi.org/10.30684/etj.v38i5a.291.

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The step-up converters are widespread use in many applications, including powered vehicles, photovoltaic systems, continuous power supplies, and fuel cell systems. The reliability, quality, maintainability, and reduction in size are the important requirements in the energy conversion process. Interleaving method is one of advisable solution for heavy-performance applications, its harmonious in circuit design by paralleling two or more identical converters. This paper investigates the comparison performance of a two-phase interleaved boost converter with the traditional boost converter. The inv

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12

Ratib, Mohamed K., and Ahmed Rashwan. "Amplitude Sampled Reference-Based Space Vector Pulse Width Modulation for Control of Voltage Source Converters." Energy Systems Research, no. 2(14) (July 23, 2021): 46–63. http://dx.doi.org/10.38028/esr.2021.02.0005.

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Memory, speed, reliability, and efficiency are the main characteristics of concern in new contemporary control techniques of electric power converters. Space vector pulse width modulation (SVPWM) is a widespread digital compute-intensive control technique used in the control of power converters. This study aims to overcome the large number of calculations needed by the SVPWM algorithm, which limits its implementation in many advanced industrial applications. This paper presents a low-cost software implemented simplified SVPWM technique. The proposed strategy generates the inverter switching ti

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13

Eidsmoen, H. "Tight-moored amplitude-limited heaving-buoy wave-energy converter with phase control." Applied Ocean Research 20, no. 3 (1998): 157–61. http://dx.doi.org/10.1016/s0141-1187(98)00013-3.

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14

Yau, Yeu-Torng, Kuo-Ing Hwu, and Jenn-Jong Shieh. "Minimization of Output Voltage Ripple of Two-Phase Interleaved Buck Converter with Active Clamp." Energies 14, no. 16 (2021): 5215. http://dx.doi.org/10.3390/en14165215.

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A control technique combining pulse width modulation (PWM) and pulse amplitude modulation (PAM) is presented herein to reduce the output voltage ripple of the converter as little as possible. Such a converter requires a two-stage cascaded structure. The first stage is the buck-boost converter, which is used to adjust the output voltage of the second power stage, whereas the second stage is the two-phase interleaved buck converter, which is used to reduce the output voltage ripple. In theory, the two phases of the second stage operate under the condition of individual duty cycles of 50% with a

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15

Wang, Rutian, Yuyang Wu, Guoqing He, Ying Lv, Jiaxing Du, and Yanhao Li. "Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter." Energies 11, no. 11 (2018): 3050. http://dx.doi.org/10.3390/en11113050.

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In this paper; the impedance model of PWM rectifier and LLC resonant converter are deduced, and the stability analysis of cascade system is studied. The principle of three-phase PWM rectifier is introduced; and the small signal model in d-q coordinate system is deduced. The expression of dc side output impedance model for PWM rectifier is derived. The LLC resonant converter is operated in a fixed-frequency state, and the LLC resonant converter is modeled as a small signal model. On this basis, the input impedance model expression of the LLC resonant converter is derived. According to the imped

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16

Cheng, Hung Liang, Chun An Cheng, Chao Shun Chen, and Kuan Lung Huang. "Design and Implementation of a Dimmable LED Driver with Low-Frequency PWM Control." Applied Mechanics and Materials 284-287 (January 2013): 2538–42. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2538.

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This paper proposes a high-efficiency dimmable LED driver for light emitting diodes (LED). The developed LED driver consists of a full-bridge resonant converter and six buck converters. The function of the full-bridge resonant converter is to obtain a smooth dc-link voltage for the buck converters by phase-shift modulation (PSM) while that of the six buck converters is to drive six LED modules, respectively. The gate voltage of the active switch of each buck converter is a combination of high-frequency and low-frequency pulses. The duty ratio of the high-frequency pulse controls the LED voltag

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17

Rahman, S. Abdul, and Gebrie Teshome. "Maximum voltage sag compensation using direct converter by modulating the carrier signal." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 4 (2020): 3936. http://dx.doi.org/10.11591/ijece.v10i4.pp3936-3941.

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The aim of this paper is to achieve maximum voltage sag compensation of 52% using direct converter based DVR. The DVR topology has only two switches. The DVR is designed to compensate the voltage sag in a phase by taking power from the same phase. A direct converter is connected between the series transformer and the line in which sag compensation is to be achieved. If the actual amplitude of the error signal is used and the amplitude of carrier signal is kept at 1 unit, it is possible to achieve only 22% of sag compensation. If the amplitude of the carrier signal is modulated according to the

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18

Zakharchenko, Vladimir, and Alexander Khoperskov. "Scheme features of radio pulse gating for radar measurements." ITM Web of Conferences 30 (2019): 11011. http://dx.doi.org/10.1051/itmconf/20193011011.

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The model of a radio pulse stroboscopic converter consisting of a mixer and a narrowband filter tuned to the difference frequency of the carrier signals is considered. We demonstrate that the measurement of the phase structure of the input signals can be made at low frequency by amplitude methods by changing the phase both in the channel of the gating radio pulses and in the low frequency channel. The radio-pulse gating scheme goes into a phase-sensitive mode when the system clock frequency is synchronized with the second harmonic of the difference frequency, however, in this case, a parasitic

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19

Petrushak, V. S. "MEASUREMENT OF THE AMPLITUDE OF PERIODIC SIGNALS USING THE FIBONACCI METHOD." Devices and Methods of Measurements 9, no. 2 (2018): 167–72. http://dx.doi.org/10.21122/2220-9506-2018-9-2-167-172.

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Development of new methods and high-rate means for converting the amplitude of high-frequency periodic signals into a binary code with high speed for solving problems of industrial tomography, radar, radio navigation, during measurements of amplitude-frequency characteristics, measurement of the amplitude of signal generators is relevant in scientific terms and useful in practical applications. The aim of the study was to create a new amplitude meter for high-frequency periodic signals based on the Fibonacci method without converting the AC voltage into an equivalent parameter.Based on the dev

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20

de la Torre, Angel, Santiago Medina-Rodríguez, Jose C. Segura, and Jorge F. Fernández-Sánchez. "Self-Referenced Multifrequency Phase-Resolved Luminescence Spectroscopy." Sensors 20, no. 19 (2020): 5482. http://dx.doi.org/10.3390/s20195482.

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Phase-resolved luminescence chemical sensors provide the analyte determination based on the estimation of the luminescence lifetime. The lifetime is estimated from an analysis of the amplitudes and/or phases of the excitation and emission signals at one or several modulation frequencies. This requires recording both the excitation signal (used to modulate the light source) and the emission signal (obtained from an optical transducer illuminated by the luminescent sensing phase). The excitation signal is conventionally used as reference, in order to obtain the modulation factor (the ratio betwe

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21

Li, Po, Xiang Li, and Tao Zeng. "A Fast and Simple Fault Diagnosis Method for Interleaved DC-DC Converters Based on Output Voltage Analysis." Electronics 10, no. 12 (2021): 1451. http://dx.doi.org/10.3390/electronics10121451.

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Interleaved DC-DC converters have been widely used in power conversion due to their high efficiency and reliability. In the application of new energy, this plays an increasingly important role in the grid-connected power generation of wind, solar, and tidal energy. Therefore, it is crucial to ensure the reliability and proper operation of interleaved DC-DC converters. We studied an open circuit fault (OCF) diagnosis method for a three-phase interleaved buck converter. We propose a non-invasive diagnosis method based on the output voltage using the harmonic amplitude and phase at the switching

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22

Röder, Julian, Georg Jacobs, Tobias Duda, Dennis Bosse, and Fabian Herzog. "Simulative investigation of wind turbine gearbox loads during power converter fault." Forschung im Ingenieurwesen 85, no. 2 (2021): 251–56. http://dx.doi.org/10.1007/s10010-021-00461-2.

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AbstractThree phase short circuit power converter faults in wind turbines (WT) result in highly dynamic generator torque reversals, which lead to load reversals within the drivetrain. Dynamic load reversals in combination with changing rotational speeds are, for example, critical for smearing within roller bearings. Therefore, an investigation of the correlation between three phase short circuit converter faults and drivetrain component failures is necessary.Due to the risk of damage and the resulting costs, it is not economically feasible to extensively investigate three phase short circuit c

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23

Scerri, Jeremy, Barnaby Portelli, Ivan Grech, Edward Gatt, and Owen Casha. "A MEMS BPSK to ASK converter." Microelectronics International 36, no. 1 (2019): 26–34. http://dx.doi.org/10.1108/mi-06-2018-0039.

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Purpose The purpose of this paper is to investigate the feasibility of using micro electromechanical systems (MEMS) to convert a binary phase shift keying (BPSK) signal to a simpler amplitude shift keying (ASK) scheme. Design/methodology/approach The prototype is designed within the SOIMUMPs® fabrication process constraints. The fabrication constraints imposed geometric limitations on what could be tested. These constraints were used to build a mathematical model, which in turn was used to optimize the response using MATLAB®. The optimized design was tested using finite element analysis with C

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24

Pulido, Esteban, Luis Morán, Felipe Villarroel, and José Silva. "Active Reduction of Short-Circuit Current in Power Distribution Systems." Energies 13, no. 2 (2020): 334. http://dx.doi.org/10.3390/en13020334.

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In this paper, a new concept of short-circuit current (SCC) reduction for power distribution systems is presented and analyzed. Conventional fault current limiters (FCLs) are connected in series with a circuit breaker (CB) that is required to limit the short-circuit current. Instead, the proposed scheme consisted of the parallel connection of a current-controlled power converter to the same bus intended to reduce the amplitude of the short-circuit current. This power converter was controlled to absorb a percentage of the short-circuit current from the bus to reduce the amplitude of the short-c

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25

Tsytovich, L. I., O. G. Brylina, M. M. Dudkin, R. M. Rakhmatulin, and A. V. Tyugaev. "Analog-digital converter with integrating in-phase amplitude-frequency-pulse modulation for switched drive systems." Russian Electrical Engineering 84, no. 5 (2013): 244–49. http://dx.doi.org/10.3103/s106837121305009x.

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26

Jbari, Atman, Larbi Bellarbi, and Abdelhamid Errachid. "Referenced Approximation Technique for a Rom-Less Sweep Frequency Synthesizer." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (2016): 1213. http://dx.doi.org/10.11591/ijece.v6i3.9879.

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<p>The main goal of this paper is to present a novel ROM-less direct digital frequency synthesizer for sweep instrumentation systems. It provides a main sweep channel for frequency analysis and a reference channel for phase and amplitude measurement block operating at constant frequency. For phase to amplitude converter, we propose a new trigonometric approximation technique based on a set of reference angles. In addition, we present the design of the proposed synthesizer and its evaluation in Matlab-Simulink environment. The simulation results illustrate the performances and demonstrate

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27

Jbari, Atman, Larbi Bellarbi, and Abdelhamid Errachid. "Referenced Approximation Technique for a Rom-Less Sweep Frequency Synthesizer." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (2016): 1213. http://dx.doi.org/10.11591/ijece.v6i3.pp1213-1222.

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<p>The main goal of this paper is to present a novel ROM-less direct digital frequency synthesizer for sweep instrumentation systems. It provides a main sweep channel for frequency analysis and a reference channel for phase and amplitude measurement block operating at constant frequency. For phase to amplitude converter, we propose a new trigonometric approximation technique based on a set of reference angles. In addition, we present the design of the proposed synthesizer and its evaluation in Matlab-Simulink environment. The simulation results illustrate the performances and demonstrate

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28

Hosono, Ryohei, and Ning Guan. "An Antenna Measurement System Based on Optical Feeding." International Journal of Antennas and Propagation 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/528950.

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A radiation measurement system by using optical feeding is proposed. The system replaces conventional electrical feeding to antennas by the optical feeding which is composed of an electrical/optical (E/O) converter, a graded-index (GI) optical fiber, and an optical/electrical (O/E) converter. The GI fiber is used so as the O/E converter becomes very compact by using a simple means of coupling between the fiber and the photo-diode in the converter. A vertical surface emitting laser (VCSEL) is used in the E/O converter to make the system available till 6 GHz. This combination also makes the syst

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29

Smith, Warren R. "Wave–structure interactions for the distensible tube wave energy converter." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, no. 2192 (2016): 20160160. http://dx.doi.org/10.1098/rspa.2016.0160.

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A comprehensive linear mathematical model is constructed to address the open problem of the radiated wave for the distensible tube wave energy converter. This device, full of sea water and located just below the surface of the sea, undergoes a complex interaction with the waves running along its length. The result is a bulge wave in the tube which, providing certain criteria are met, grows in amplitude and captures the wave energy through the power take-off mechanism. Successful optimization of the device means capturing the energy from a much larger width of the sea waves (capture width). To

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30

Jiali, Yu, and Xia Chaoying. "Hybrid modular multilevel converter with cascaded full bridges for medium-voltage motor drives." Transactions of the Institute of Measurement and Control 41, no. 12 (2019): 3279–91. http://dx.doi.org/10.1177/0142331218817087.

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Modular multilevel converter (MMC) is especially appropriate in high-voltage constant-frequency systems due to its modularity and scalability. But, so far MMC has not been widely used in motor drives applications. Since the capacitor voltage fluctuation is proportional to the output current amplitude and inversely proportional to the output frequency under constant torque load, at the low-speed, the excessive sub-module (SM) capacitor voltage fluctuation is one of the major obstacles for MMC applied in motor drives. To suppress the SM capacitor voltage fluctuation, an effective solution is to

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31

Wu, R., S. B. Dewan, and G. R. Slemon. "Analysis of an AC-to-DC voltage source converter using PWM with phase and amplitude control." IEEE Transactions on Industry Applications 27, no. 2 (1991): 355–64. http://dx.doi.org/10.1109/28.73626.

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32

Domrachev, V. M., I. P. Sigachev, and A. P. Sinitsyn. "Amplitude-to-digit converters with two-phase attitude sensors." Measurement Techniques 38, no. 11 (1995): 1242–45. http://dx.doi.org/10.1007/bf00986596.

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33

Han, Zhao, Xiaoli Wang, Baochen Jiang, and Jingru Chen. "A Control Strategy for Suppressing Zero-Sequence Circulating Current in Paralleled Three-Phase Voltage-Source PWM Converters." Applied Sciences 10, no. 5 (2020): 1703. http://dx.doi.org/10.3390/app10051703.

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In microgrids, paralleled converters can increase the system capacity and conversion efficiency but also generate zero-sequence circulating current, which will distort the AC-side current and increase power losses. Studies have shown that, for two paralleled three-phase voltage-source pulse width modulation (PWM) converters with common DC bus controlled by space vector PWM, the zero-sequence circulating current is mainly related to the difference of the zero-sequence duty ratio between the converters. Therefore, based on the traditional control ideal of zero-vector action time adjustment, this

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34

Tran, Hoan Quoc, Tien Manh Vu, and Tuyen Dinh Nguyen. "Space-vector modulation for three-phase indirect matrix converters to reduce common-mode voltage." Science & Technology Development Journal - Engineering and Technology 4, no. 2 (2021): first. http://dx.doi.org/10.32508/stdjet.v4i2.797.

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This paper presents a space vector modulation strategy for a three-phase indirect matrix converter to reduce the common-mode voltage and maintain the output performance. To reduce the peak value of the common-mode voltage to 57.7% of the input phase voltage, three active voltage vectors are used to generate the desired output voltage with arbitrary amplitude and frequency, instead of using both active and zero voltage vectors as in the traditional space vector modulation strategy. Although the common-mode voltage is reduced, the output waveform quality of the three-phase indirect matrix conver

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35

Gusenitsa, Yaroslav N., Aleksandr L. Snegirev, and Sergey A. Pokotilo. "Study of the characteristics of a radio photon device for determining the phase difference of a radar signals." Izmeritel`naya Tekhnika, no. 2 (2021): 38–42. http://dx.doi.org/10.32446/0368-1025it.2021-2-38-42.

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The paper considers the problem of accurate calculation of the phase of the radar signal in relation to the receiving phased antenna arrays. Methods for determining the phase difference based on a comparison of the received signal with the local oscillator signal are listed, as well as a method based on the use of a radio-photon analog-to-digital converter for the output signal of the receiving phased antenna array. Their disadvantages are indicated. A method and a radio photon device are proposed that are devoid of these disadvantages. The method allows you to calculate the phase difference o

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36

Wang, Rutian, Min Huang, Chongyi Lu, and Weiquan Wang. "A Direct Three-Phase AC–AC Matrix Converter-Based Wireless Power Transfer System for Electric Vehicles." Applied Sciences 10, no. 7 (2020): 2217. http://dx.doi.org/10.3390/app10072217.

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For the bidirectional wireless power transfer system of electric vehicles, the topology proposed in this paper includes a direct three-phase AC–AC matrix converter as the pre-stage main circuit, a bilateral inductor–capacitor–capacitor–inductor (LCCL) as the resonance compensation network, and a full-bridge converter as the latter stage circuit. According to the characteristics of the system topology, a new control strategy is proposed based on the de-re-coupling method. The control principle of the coordination work of the scheme is expounded, and the corresponding switch combination logic is

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37

Almoghrabi, H., and J. Lange. "Layers and bright spots." GEOPHYSICS 51, no. 3 (1986): 699–709. http://dx.doi.org/10.1190/1.1442123.

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Seismic amplitudes are affected by both geometric and lithologic features of reflecting layers. Observation of “bright spots” is a function of not only pore fluid saturations, but also of layer thickness and surrounding rock type. The numerical model developed uses a finite sum of reflected and mode‐converted waves to evaluate the application of wave analysis in determining pore fluid types. Amplitude analysis alone is not sufficient to define realistically pore fluid type, but when amplitude analysis is combined with phase and mode‐converted shear‐wave behavior, it is possible to differentiat

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38

Pustovetov, M. Yu. "Determination of the Sufficient Inductance of AC Line Reactor at the Input of Frequency Converter." Journal of Modeling and Optimization 11, no. 1 (2019): 25–29. http://dx.doi.org/10.32732/jmo.2019.11.1.25.

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This article discusses the problem of sufficient inductance of AC line reactor at the input of frequency converter. Author provided some simulations for frequency converter loaded by induction motors with different rated powers. For all induction motors the following characteristics of phase current consumed by frequency converter from the grid considered. Instantaneous peak current during the frequency acceleration of induction motor. Amplitude of the current in steady state mode after the end of induction motor acceleration. Instantaneous peak current during additional charge of DC-link capa

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39

HIKAWA, Hiroomi. "ROM-Less Phase to Amplitude Converter Using Sine Wave Approximation Based on Harmonic Removal from Trapezoid Wave." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E94-A, no. 7 (2011): 1581–84. http://dx.doi.org/10.1587/transfun.e94.a.1581.

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40

Bellan, Diego. "On the Validity of the Noise Model of Quantization for the Frequency-Domain Amplitude Estimation of Low-Level Sine Waves." Metrology and Measurement Systems 22, no. 1 (2015): 89–100. http://dx.doi.org/10.1515/mms-2015-0004.

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Abstract This paper deals with the amplitude estimation in the frequency domain of low-level sine waves, i.e. sine waves spanning a small number of quantization steps of an analog-to-digital converter. This is a quite common condition for high-speed low-resolution converters. A digitized sine wave is transformed into the frequency domain through the discrete Fourier transform. The error in the amplitude estimate is treated as a random variable since the offset and the phase of the sine wave are usually unknown. Therefore, the estimate is characterized by its standard deviation. The proposed mo

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41

Pak, Oleg, and Vladimir Zakharchenko. "Immunity of coherent stroboscopic processing system of ultra wideband signals during synchronous mode." ITM Web of Conferences 30 (2019): 15022. http://dx.doi.org/10.1051/itmconf/20193015022.

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Analyze of the radio pulse stroboscopic schema work in “synchronous” mode was made at clock interval synchronization by the second harmonic of intermediate frequency. It’s introduced relationships describing the input radio signal’s amplitude relationship during the phase modulation transforming in time during work the converter in synchronous mode. The results of semi natural modeling of the radio pulse gating system qualitative agreement with theoretical calculations.

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Serra, Federico M., Lucas M. Fernández, Oscar D. Montoya, Walter Gil-González, and Jesus C. Hernández. "Nonlinear Voltage Control for Three-Phase DC-AC Converters in Hybrid Systems: An Application of the PI-PBC Method." Electronics 9, no. 5 (2020): 847. http://dx.doi.org/10.3390/electronics9050847.

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In this paper, a proportional-integral passivity-based controller (PI-PBC) is proposed to regulate the amplitude and frequency of the three-phase output voltage in a direct-current alternating-current (DC-AC) converter with an LC filter. This converter is used to supply energy to AC loads in hybrid renewable based systems. The proposed strategy uses the well-known proportional-integral (PI) actions and guarantees the stability of the system by means of the Lyapunov theory. The proposed controller continues to maintain the simplicity and robustness of the PI controls using the Hamiltonian repre

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Sušin, Denis, Mitja Nemec, Vanja Ambrožič, and David Nedeljković. "Limitations of Harmonics Control in Power Converters." Electronics 8, no. 7 (2019): 739. http://dx.doi.org/10.3390/electronics8070739.

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In this paper, we analyze the constraints of harmonics control in power electronic systems. Based on an equivalent circuit of a typical power converter application and its parameters, we have derived an analytical expression for calculating the maximal amplitude of controlled harmonic current. This expression has been successfully verified on an experimental setup, designed around a single-phase grid-connected bidirectional inverter. The pulse width modulated (PWM) driven inverter has been controlled by multiple resonant controllers, each of them providing individual control of a selected harm

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Zhu, Qinyue, Wei Dai, Lei Guan, Xitang Tan, Zhaoyang Li, and Dabo Xie. "A Fault-Tolerant Control Strategy of Modular Multilevel Converter with Sub-Module Faults Based on Neutral Point Compound Shift." Energies 12, no. 5 (2019): 876. http://dx.doi.org/10.3390/en12050876.

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In view of the complex calculation and limited fault tolerance capability of existing neutral point shift control algorithms, this paper studies the fault-tolerant control method for sub-module faults in modular multilevel converters on the basis of neutral point compound shift control strategy. In order to reduce the calculation complexity of shift parameters in the traditional strategy and simplify its implementation, an improved AC side phase voltage vector reconstruction method is proposed, achieving online real-time calculation of the modulation wave adjustment parameters of each phase re

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KISLYAKOV, Maxim A., Kirill K. KRUTIKOV, and Vyacheslav V. ROZHKOV. "Controlling a Direct Matrix Frequency Converter of Secondary Power Supply Sources for Autonomous Objects." Elektrichestvo 7, no. 7 (2021): 41–50. http://dx.doi.org/10.24160/0013-5380-2021-7-41-50.

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A version of using "sliding modes" in performing discontinuous control of dynamic objects for matrix frequency converters (MFC) as part of an on-board aircraft network is proposed. Unlike the way used in the existing MFC control algorithms, the sinusoidal voltages available in the primary network are processed according to the proposed modernized technology of "sliding modes". The level of discontinuous voltages is selected from the condition of minimum deviations from the target, which has a favorable effect on the spectrum of output voltages. On the selected time interval, the input primary

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Shao, Yang Zhou, Hai Zhang, and Yue He Ge. "Design of Signal Generator Based on DDS Technology." Advanced Materials Research 846-847 (November 2013): 488–92. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.488.

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Traditional signal generators use analog oscillator circuit as the source, which often involve multiplication, integral and differential circuit. As this method required high electrical parameters of the system, and its complex circuit structure is vulnerable to outside interference. In this paper, a new technology named Direct Digital Synthesizer, DDS technology, was applied on a FPGA chip to design a waveform generator. It can generate periodic waveform, and its frequency, phase and amplitude were adjustable. Simultaneously, DDS technology has the function of frequency and phase adjustment,

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Idzura Yusuf, Siti, Suhaidi Shafie, Hasmayadi Abdul Majid, and Izhal Abdul Halin. "Differential input range driver for SAR ADC measurement setup." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 2 (2020): 750. http://dx.doi.org/10.11591/ijeecs.v17.i2.pp750-758.

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<span>Differential successive approximation register (SAR) of analog to digital converter (ADC) requires two balancing input signals that have same amplitude with 180⁰ out of phase. Otherwise, it performs inaccurately and degrades the performance during ADC testing procedure. Therefore, an implementation of AD8139 chip single to differential amplifier was chosen as an ADC driver to generate sufficient differential output for the ADC. The chip was placed on a printed circuit board (PCB) to test the functionality as well as the performance of static and dynamic SAR ADC. The result shows th

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Alsaqal, Laith M. Akram, Ahmed M. T. Ibraheem Alnaib, and Omar Talal Mahmood. "Comparison of multiple modulation techniques for various topologies of multilevel converters for single phase AC motor drive." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 2 (2019): 662. http://dx.doi.org/10.11591/ijpeds.v10.i2.pp662-671.

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There are various types of Multilevel Converters (MCs) in addition to various types of modulation techniques for these types of MCs; the challenges in selecting the best one of them with regard to the amount of the required of components, and its harmonics content. So, a comparison study among these types has been done in this paper. For comparison study, the simulation of seven level of two popular topologies of MCs: Neutral Point Clamped (NPC) converter, and Cascaded-MCs were carried out with Matlab/Simulink software program. These converters are used to drive a single phase capacitor start

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Yu, Gui Yin. "The High-Power of DC Power with Auto Tracking Power Frequency." Advanced Materials Research 383-390 (November 2011): 321–24. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.321.

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This paper analyzes the reason that the common thyristor trigger is unable to fulfill power supply in wide range changes of frequency. The high precise frequency/voltage converter is used to monitor and track frequency changes of the simultaneous power supply. The simultaneous signal and charge current source are provided by the converter for saw tooth wave trigger. The frequency of saw tooth wave changes as the same time the frequency of power supply changes in wide range. However, the amplitude of the saw tooth wave can be kept constant. This can achieve the controlled angle of the thyristor

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Nori, Ahmed Muthenaa, and Turki K. Hassan. "Modeling and simulation of quasi-Z-source indirect matrix converter for permanent magnet synchronous motor drive." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 2 (2019): 882. http://dx.doi.org/10.11591/ijpeds.v10.i2.pp882-899.

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This paper aims to use a three-phase quasi-Z-source indirect matrix converter (QZSIMC) to expand the voltage gain for application in a Permanent Magnet Synchronous Motor (PMSM) drives. In this converter, a unique quasi-Z-source network (QZSN) connects the three-phase input voltage to conventional indirect matrix converter (IMC) in order to boost the supply voltage for PMSM because of limited voltage gain of IMC. Dual space vector modulation (SVM) is utilized to control the QZSIMC. The amplitude of output voltage for quasi-Z-source network is raised by the shoot-through of the rectifier stage,

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