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Journal articles on the topic 'High Frequency Current Injection'

Author: Grafiati

Published: 10 March 2023

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1

Harke, M. C., J. M. Guerrero, M. W. Degner, F. Briz, and R. D. Lorenz. "Current Measurement Gain Tuning Using High-Frequency Signal Injection." IEEE Transactions on Industry Applications 44, no. 5 (2008): 1578–86. http://dx.doi.org/10.1109/tia.2008.2002170.

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2

Liu, Zhao, Wang, Huang, and Shi. "Compatibility Issues with Irregular Current Injection Islanding Detection Methods and a Solution." Energies 12, no. 8 (2019): 1467. http://dx.doi.org/10.3390/en12081467.

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Islanding detection methods, based on injecting high-/low-frequency currents or negative sequence fundamental frequency currents and observing the resultant responses, are collectively referred to as irregular current injection methods in this paper. In multi-distributed generation (DG) operation, if there is no restriction to the phase of injected irregular currents, the currents at the same frequency may cancel each other out, and then their convergent current may be too small to cause a detectable response, for which reason islanding detection will be severely affected. Accordingly, this pa

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3

Kim, Dongouk, Yong-Cheol Kwon, Seung-Ki Sul, Jang-Hwan Kim, and Rae-Sung Yu. "Suppression of Injection Voltage Disturbance for High-Frequency Square-Wave Injection Sensorless Drive With Regulation of Induced High-Frequency Current Ripple." IEEE Transactions on Industry Applications 52, no. 1 (2016): 302–12. http://dx.doi.org/10.1109/tia.2015.2478887.

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4

Okano, Toshiki, Takuya Mitani, Akihiro Suwa, et al. "DC Interruption Characteristics of VCB by Injection of High Frequency Current." IEEJ Transactions on Power and Energy 138, no. 6 (2018): 535–36. http://dx.doi.org/10.1541/ieejpes.138.535.

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5

Bhadra, D. K., and C. Chu. "RF current drive with magnetic helicity injection." Journal of Plasma Physics 33, no. 2 (1985): 257–64. http://dx.doi.org/10.1017/s002237780000249x.

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External injection of magnetic helicity into a plasma may be possible through the introduction of appropriately polarized electromagnetic waves. A concept of steady-state current-drive is presented, based on the validity of conservation of helicity (appropriately defined for finite frequency processes). It is shown that such external injection of helicity can maintain a steady-state current by compensating the volt-seconds consumed through plasma resistivity. Such a mechanism, if experimentally successful, is particularly interesting at high densities because the efficiency of the process does

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6

Li, Ke, Tianfu Sun, Fucheng Jiang, Wei Feng, and Huiyun Li. "MTPA Control for IPMSM Drives Based on Pseudorandom Frequency-Switching Sinusoidal Signal Injection." Machines 10, no. 4 (2022): 231. http://dx.doi.org/10.3390/machines10040231.

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Among various maximum torque per ampere (MTPA) control schemes for interior permanent magnet synchronous motor (IPMSM) drives, the signal-injection-based methods exhibit relatively high overall performance due to their high control accuracy and satisfactory dynamic performance. However, the high current spectrum peaks induced by the fixed-frequency signal injection may cause electromagnetic interference and even audible noise problems in applications, such as electric vehicles, vessels, and aircraft. To address this problem, an MTPA control method using pseudorandom frequency-switching sinusoi

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7

Wang, Jian Min. "Performance of Pulsating High-Frequency Current Injection Based Sensorless Control of PMSM." Applied Mechanics and Materials 347-350 (August 2013): 610–16. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.610.

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In the paper the principle and performances of the pulsating current injection based sensorless control of permanent magnet synchronous motor (PMSM) are analyzed theoretically and investigated by simulations. In the analyses, the effects of the speed EMF terms and the deviation between the actual d-axis high-frequency current and the command, which results from the limited gain and bandwidth of the current control loop, are all taken into account. It is shown that the pulsating current injection method can achieve stable position estimation in a wide speed range. But appreciable position error

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8

Seog-Joo Kang, Jang-Mok Kim, and Seung-Ki Sul. "Position sensorless control of synchronous reluctance motor using high frequency current injection." IEEE Transactions on Energy Conversion 14, no. 4 (1999): 1271–75. http://dx.doi.org/10.1109/60.815058.

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9

Reigosa, David Diaz, Daniel Fernandez, Hideo Yoshida, Takashi Kato, and Fernando Briz. "Permanent-Magnet Temperature Estimation in PMSMs Using Pulsating High-Frequency Current Injection." IEEE Transactions on Industry Applications 51, no. 4 (2015): 3159–68. http://dx.doi.org/10.1109/tia.2015.2404922.

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10

Cross, A. M., and A. J. Forsyth. "A high-power-factor, three-phase isolated AC-DC converter using high-frequency current injection." IEEE Transactions on Power Electronics 18, no. 4 (2003): 1012–19. http://dx.doi.org/10.1109/tpel.2003.813781.

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11

Li, Yu Dong, Bo Zhou, Ying Liu, and Cheng Liang Zhao. "Analysis and Simulation of Low Speed Sensorless Vector Control with Two Current Signal Injection Schemes." Advanced Materials Research 722 (July 2013): 361–68. http://dx.doi.org/10.4028/www.scientific.net/amr.722.361.

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Two current signal injection methods, the fluctuating high frequency (HF) current signal injection and low frequency (LF) current signal injection, were discussed. The basic principles of rotor position self-sensing using these current signal injection and the key techniques in implementation were presented and the simulation models for sensorless vector control systems of a permanent magnet synchronous motor (PMSM) were established using two proposed rotor position estimation methods. Comparative simulation study of the fluctuating HF current signal injection and LF current signal injection w

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12

Klein, M., D. J. W. Mous, and A. Gottdang. "Fast and Accurate Sequential Injection AMS with Gated Faraday Cup Current Measurement." Radiocarbon 46, no. 1 (2004): 77–82. http://dx.doi.org/10.1017/s0033822200039370.

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Sequential injection or bouncing has a number of properties which can lead to a reduction of the analysis accuracy if no appropriate measures are taken. A special injection system has been developed in order to eliminate these shortcomings. The influence of source glitches or instabilities on the measured isotopic ratio is substantially reduced by a high cycling frequency. A fast beam-blanking unit guarantees the needed accuracy of the injection periods. Background currents are avoided by synchronizing the current measurement for the stable isotopes with their injection periods. To achieve the

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13

Teng, Yufei, Zhenyuan Zhang, and Xiaopeng Li. "Improved Approach to High-Frequency Current Injection-Based Protection for Grounding Electrode Line in High-Voltage Direct Current System." IEEE Transactions on Industry Applications 56, no. 3 (2020): 2409–17. http://dx.doi.org/10.1109/tia.2020.2979960.

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14

Wu, Han, Yanzhou Sun, Xiaoqian Liu, Xiaoyan Song, and Yanfang Wei. "The Signal Injection Method with High-Frequency for Distribution Network Capacitive Current Measurement." Journal of Electrical Engineering & Technology 16, no. 2 (2021): 867–72. http://dx.doi.org/10.1007/s42835-020-00645-w.

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15

Zhong, Li Ping. "Research on rotating high-frequency current injection method based on LC resonance network." International Journal of Computer Applications in Technology 64, no. 2 (2020): 143. http://dx.doi.org/10.1504/ijcat.2020.10033914.

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16

Zhong, Li Ping. "Research on rotating high-frequency current injection method based on LC resonance network." International Journal of Computer Applications in Technology 64, no. 2 (2020): 143. http://dx.doi.org/10.1504/ijcat.2020.111607.

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17

Huang, Yuhao, Kai Yang, and Cheng Luo. "Analysis on Position Estimation Error of Sensorless Control Based on Square-Wave Injection for SynRM Caused by Dead-Time Harmonic Current." Energies 15, no. 24 (2022): 9539. http://dx.doi.org/10.3390/en15249539.

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Sensorless control based on high-frequency square-wave voltage injection (HFSVI) is one of the most common sensorless control methods for synchronous reluctance motors (SynRMs). However, the injection frequency for SynRMs cannot be too high due to various factors. As the injection frequency decreases, the dead-time harmonic current will greatly affect the separation of high frequency signals. This paper analyzes the effect of dead-time harmonic current on the HFSVI-based sensorless control performance of SynRMs and proposes a source of position estimation error. Then, a dead-time compensation

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18

Gan, Chun, Jianhua Wu, Shiyou Yang, and Yihua Hu. "Phase Current Reconstruction of Switched Reluctance Motors From DC-Link Current Under Double High-Frequency Pulses Injection." IEEE Transactions on Industrial Electronics 62, no. 5 (2015): 3265–76. http://dx.doi.org/10.1109/tie.2014.2364153.

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19

Wang, Zhiqiang, Qi Guo, Jifeng Xiao, Te Liang, Zhichen Lin, and Wei Chen. "High-Frequency Square Wave Injection Sensorless Control Method of IPMSM Based on Oversampling Scheme." World Electric Vehicle Journal 13, no. 11 (2022): 217. http://dx.doi.org/10.3390/wevj13110217.

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In view of the disadvantages of the traditional high-frequency square wave signal injection method in the low-speed operation of high-power interior permanent magnet synchronous motor (IPMSM), such as the large error of rotor position calculation and delay of position update, a method based on high-frequency square wave signal injection is proposed to obtain an effective vector action current through oversampling. When the vector is zero, the current changes to not zero, but when the vector is effective, the current changes greatly. In the traditional sampling and calculation methods, the chan

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20

Szalay, István, Dénes Fodor, Krisztián Enisz, and Hunor Medve. "Permanent Magnet Synchronous Motor Model Extension for High-Frequency Signal Injection-Based Sensorless Magnet Polarity Detection." Energies 15, no. 3 (2022): 1131. http://dx.doi.org/10.3390/en15031131.

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In this paper, a novel extended permanent magnet synchronous motor model is presented that incorporates a quadratic flux-current function to represent the polarity-dependent saliency. The proposed model enables the design of sensorless polarity detection algorithms required by the initial position detection of permanent magnet synchronous motors. The novelty of the model is that it integrates the polarity-dependent saliency into the traditional machine model and introduces a new machine parameter, the polarity-dependent saliency coefficient, to specify the Hessian matrix of the flux-current fu

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21

Feng, Zhao, and Peng Jiaqi. "Islanding Detection Based on High Frequency Injection for Multi Inverter Microgrid." Open Electrical & Electronic Engineering Journal 9, no. 1 (2015): 560–65. http://dx.doi.org/10.2174/1874129001509010560.

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Islanding detection is one of the indispensable protection detections for grid-connected inverters. The detection of islanding is the key factor that should be considered in the analysis of grid-connection security. The non-detection zone is the performance index of anti-islanding plan. According to the phase feature, quantitative analyses of the non-detection zone of several frequency disturbance schemes are conducted under several different coordinate systems by increasing disturbance, namely injecting third harmonic to the modulating wave that produces inverter drive signal and detects the

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22

Sun, Yanzhou, Weilin Wu, Yining Sun, Xiaoyan Song, and Han Wu. "Research on signal injection method with high frequency for distribution network capacitive current measurement." Electric Power Systems Research 195 (June 2021): 107135. http://dx.doi.org/10.1016/j.epsr.2021.107135.

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23

Odhano, Shafiq Ahmed, Paolo Giangrande, Radu Iustin Bojoi, and Chris Gerada. "Self-Commissioning of Interior Permanent- Magnet Synchronous Motor Drives With High-Frequency Current Injection." IEEE Transactions on Industry Applications 50, no. 5 (2014): 3295–303. http://dx.doi.org/10.1109/tia.2014.2309722.

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24

Martinez, Maria, David Reigosa, Daniel Fernandez, Juan M. Guerrero, and Fernando Briz. "Enhancement of Permanent-Magnet Synchronous Machines Torque Estimation Using Pulsating High-Frequency Current Injection." IEEE Transactions on Industry Applications 56, no. 1 (2020): 358–66. http://dx.doi.org/10.1109/tia.2019.2954297.

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25

Wakefield, Hilary E., Ralph F. Fregosi, and Andrew J. Fuglevand. "Current injection and receptor-mediated excitation produce similar maximal firing rates in hypoglossal motoneurons." Journal of Neurophysiology 115, no. 3 (2016): 1307–13. http://dx.doi.org/10.1152/jn.00848.2015.

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The maximum firing rates of motoneurons (MNs), activated in response to synaptic drive, appear to be much lower than that elicited by current injection. It could be that the decrease in input resistance associated with increased synaptic activity (but not current injection) might blunt overall changes in membrane depolarization and thereby limit spike-frequency output. To test this idea, we recorded, in the same cells, maximal firing responses to current injection and to synaptic activation. We prepared 300 μm medullary slices in neonatal rats that contained hypoglossal MNs and used whole-cell

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26

Li, Dengke, and Yukun Liu. "Research on Position Sensorless Vector Control of Synchronous Reluctance Motor Based on High Frequency Injection Method." Journal of Physics: Conference Series 2173, no. 1 (2022): 012055. http://dx.doi.org/10.1088/1742-6596/2173/1/012055.

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Abstract In order to achieve the high-performance control position sensorless vector control of synchronous reluctance motor (SynRM), this paper investigated its running-up performance and capability at zero or low speed range. The contribution of this paper mainly includes two parts. Firstly, it takes cross-saturation effect into consideration, Secondly, the paper improves the control stiffness and reliability under low-speed sensorless operation condition by adopting the pulsating sinusoidal high frequency voltage injection snesorless method. By injecting high-frequency voltage excitation si

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27

Tauchi, Yuki, and Hisao Kubota. "Audible Noise Reduction Method in IPMSM Position Sensorless Control Based on High-Frequency Current Injection." IEEJ Journal of Industry Applications 4, no. 3 (2015): 180–86. http://dx.doi.org/10.1541/ieejjia.4.180.

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28

Kapur, G. "Design of a High Frequency Stable Oscillator with Tunable Frequency using Field Programmable CMOS Current Conveyor." International Journal of Advance Research and Innovation 4, no. 4 (2016): 33–38. http://dx.doi.org/10.51976/ijari.441606.

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Design of a programmable frequency oscillator design using field programmable, analog, CMOS current conveyor has been presented; further, a design methodology to introduce on-chip /field programmability into the second generation current controlled current conveyor circuit (CCCII) is explained. To make the CCCII CMOS design programmable, a floating-gate transistor synapse is introduced to replace the MOSFETs in the design. The charge at the floating-gate can be programmed after fabrication, based on Hot-e-injection and Fowler-Nordheim tunneling techniques. This programming charge at floating-g

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29

Wu, Jingbo, Yongwei Wang, and Zhijun Guo. "Hybrid Pulse High-Frequency Voltage Injection Control Algorithm of Sensorless IPMSM for Vehicles." Computational Intelligence and Neuroscience 2022 (September 9, 2022): 1–9. http://dx.doi.org/10.1155/2022/4248643.

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A hybrid pulse vibration high-frequency voltage signal injection method is proposed to solve the problems that the conventional sensorless control algorithm of vehicle IPMSM may generate a large estimated rotor position error and opposite directions in identifying the polarity of magnetic poles under zero-speed and high-torque starting and low-speed operation. The magnetic pole polarity is identified by the saturation effect of the flux chain by injecting a high-frequency sinusoidal voltage signal and opposite pulse voltage signal into the axis d ^ of the assumed coordinate system simultaneous

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30

Piccardo, Marco, Michele Tamagnone, Benedikt Schwarz, et al. "Radio frequency transmitter based on a laser frequency comb." Proceedings of the National Academy of Sciences 116, no. 19 (2019): 9181–85. http://dx.doi.org/10.1073/pnas.1903534116.

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Since the days of Hertz, radio transmitters have evolved from rudimentary circuits emitting around 50 MHz to modern ubiquitous Wi-Fi devices operating at gigahertz radio bands. As wireless data traffic continues to increase, there is a need for new communication technologies capable of high-frequency operation for high-speed data transfer. Here, we give a proof of concept of a compact radio frequency transmitter based on a semiconductor laser frequency comb. In this laser, the beating among the coherent modes oscillating inside the cavity generates a radio frequency current, which couples to t

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31

Abukari, S. S., S. Y. Mensah, R. Musah, M. Amekpewu, N. G. Mensah, and K. W. Adu. "Enhanced nonlinear conductivity due to hot-electron injection in carbon nanotubes." Low Temperature Physics 48, no. 7 (2022): 552–55. http://dx.doi.org/10.1063/10.0011603.

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We have theoretically obtained an expression for the current density in a terahertz field due to hot-electron injection in carbon nanotubes. The injection modifies the stationary distribution function and leads to a qualitative change in the behavior of the current-voltage characteristics and causes absolute negative conductivity. We compared the current-voltage characteristic behavior at different injection rates and observed a drastic change in the current density and absolute negative conductivity values. We propose that carbon nanotubes with hot-electron injection may be useful for high-fr

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32

Sal y Rosas, Damian, Daniel Chavez, David Frey, and Jean-Paul Ferrieux. "Single-Stage Isolated and Bidirectional Three-Phase Series-Resonant AC–DC Converter: Modulation for Active and Reactive Power Control." Energies 15, no. 21 (2022): 8070. http://dx.doi.org/10.3390/en15218070.

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Single-stage isolated and bidirectional (SSIB) AC–DC converters have a high potential for future solid-state transformers and smart battery chargers due to their reduced volume and high efficiency. However, there is a research gap for SSIB reactive power injection. This article introduces an SSIB three-phase AC–DC converter composed of three low frequency rectifiers linked by tiny film capacitors with a quad-active-bridge series-resonant (QABSR) DC–DC. A novel QAB modulation is proposed to solve three issues: (1) Three DC inputs with high ripple compensation, (2) active–reactive power injectio

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33

Baharom, Rahimi, and Mohammad Nawawi Seroji. "Dynamic analysis of the high-power factor three-phase AC to DC converter using current injection hybrid resonant Technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 1 (2019): 538. http://dx.doi.org/10.11591/ijpeds.v10.i1.pp538-547.

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<span lang="EN-US">This paper presents the dynamic analysis of the high-power factor three-phase ac to dc converter using current injection hybrid resonant technique in order to investigate the characteristics of the output voltage, line current, DC-link voltage and the resonant current of the proposed converter. The dynamic analysis have been developed based on a separate analysis of the rectifier line-frequency operation and at the resonant circuit high-frequency. Converter circuit analysis have been performed based on the operation at the fundamental frequency. The power balance relat

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34

Imai, Koji, Shinji Doki, Kosuke Kondo, and Yasuaki Aoki. "Current Control System with High-Frequency Signal Injection for Dual Three-Phase Permanent Magnet Synchronous Motor." IEEJ Journal of Industry Applications 11, no. 1 (2022): 27–40. http://dx.doi.org/10.1541/ieejjia.20012955.

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35

HATANAKA, Hidekazu, and T. NIVEN Gregory. "High Luminance, Current-Injection, Frequency-Doubled, Visible, Vertical External Cavity Surface Emitting Lasers and Illumination Applications." Review of Laser Engineering 42, no. 7 (2014): 534. http://dx.doi.org/10.2184/lsj.42.7_534.

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36

Yamada, M., and T. Higashi. "Mechanism of the noise reduction method by superposition of high-frequency current for semiconductor injection lasers." IEEE Journal of Quantum Electronics 27, no. 3 (1991): 380–88. http://dx.doi.org/10.1109/3.81335.

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37

Choi, Chan-Hee, and Jul-Ki Seok. "Compensation of Zero-Current Clamping Effects in High-Frequency-Signal-Injection-Based Sensorless PM Motor Drives." IEEE Transactions on Industry Applications 43, no. 5 (2007): 1258–65. http://dx.doi.org/10.1109/tia.2007.904409.

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38

SKOWRON, Maciej, and Ireneusz PIELECHA. "Optical tests as the basis for formulating mathematical models of the opening delay of CIDI injectors." Combustion Engines 171, no. 4 (2017): 185–92. http://dx.doi.org/10.19206/ce-2017-431.

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The main objective of this research was an attempt to evaluate the delay times of the actual needle opening of the diesel injectors in relation to the time of triggering the current control signals opening the solenoid and piezoelectric high-pressure injectors of diesel engines. The conducted tests take into account the variability of fuel injection pressure and backpressure prevailing in the operational chamber of the engine. To determine accurately the time of actual injection start, the optical tests analysing the image of the injector tip were used. Such high resolution images were obtaine

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39

Pielecha, Ireneusz, Maciej Skowron, and Krzysztof Wisłocki. "Mathematical models of delaying opening of SIDI injectors formulated on basis of optical tests." Combustion Engines 167, no. 4 (2016): 8–21. http://dx.doi.org/10.19206/ce-2016-402.

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An appropriate moment of the fuel injection start is one of the parameters determining the characteristics of fuel flow from the injector and preparation of fuel-air mixture for combustion. However, knowledge of the characteristics of signals controlling the beginning of the injector opening does not provide enough information about the time of the actual fuel injection, which often leads to incorrect conclusions and decisions in relation to the required changes in the map of injection control. What was undertaken in this research was an attempt to evaluate the delay times of the actual openin

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40

Chagnon, Jeffrey M., and Peter R. Bannon. "Adjustment to Injections of Mass, Momentum, and Heat in a Compressible Atmosphere." Journal of the Atmospheric Sciences 62, no. 8 (2005): 2749–69. http://dx.doi.org/10.1175/jas3503.1.

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Abstract This study compares the response to injections of mass, heat, and momentum during hydrostatic and geostrophic adjustment in a compressible atmosphere. The sensitivity of the adjustment to these different injection types is examined at varying spatial and temporal scales through analysis of the transient evolution of the fields as well as the partitioning of total energy between acoustic waves, buoyancy waves, Lamb waves, and the steady state. The effect of a cumulus cloud on its larger-scale environment may be represented as a vertical mass source/sink and a localized warming. To exam

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41

Nathan, A., E. Charbon, W. Kung, and A. Salim. "Low-frequency noise correlations in lateral pnp bipolar transistors." Canadian Journal of Physics 70, no. 10-11 (1992): 1112–17. http://dx.doi.org/10.1139/p92-180.

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Measurement results of low-frequency noise behaviour, and in particular, the noise correlations in lateral pnp bipolar transistors are presented for various bias conditions in both forward active and saturation regimes. The correlation in output collector noise is very high with a value close to unity only when the device is in medium injection. At extremely high injection, the degree of coherence degrades, depicting a behaviour similar to the forward current gain of the device. This degradation can be attributed to emitter-crowding effects. The correlation in output noise can be exploited to

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42

Jodkowski, J. S., F. Viana, T. E. Dick, and A. J. Berger. "Repetitive firing properties of phrenic motoneurons in the cat." Journal of Neurophysiology 60, no. 2 (1988): 687–702. http://dx.doi.org/10.1152/jn.1988.60.2.687.

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1. Using both rectangular- and ramp-shaped intracellularly injected currents, the repetitive firing properties of 23 antidromically identified phrenic motoneurons were determined in anesthetized, paralyzed, and artificially ventilated cats during hypocapnic apnea. In response to rectangular depolarizing current injections, regular repetitive firing was observed in all cells. 2. At the beginning of a rectangular current pulse, the firing pattern was characterized by high frequency of firing that rapidly adapted to a much lower steady-state value. The relationship between the reciprocal of the f

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43

Isakova, A. A., K. N. Savinov, N. N. Golovin, K. M. Sabakar, A. K. Dmitriev, and A. A. Rundau. "Combined Microwave and High-Frequency Modulation of the Injection Current of a Diode Laser for Mutiple-Frequency Excitation of CPT-Resonances." Russian Physics Journal 63, no. 1 (2020): 171–75. http://dx.doi.org/10.1007/s11182-020-02016-4.

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44

Zhao, He, Liwei Zhang, Jie Liu, Chao Zhang, Jiao Cai, and Lu Shen. "Design of a Low-Order FIR Filter for a High-Frequency Square-Wave Voltage Injection Method of the PMLSM Used in Maglev Train." Electronics 9, no. 5 (2020): 729. http://dx.doi.org/10.3390/electronics9050729.

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In position sensorless control based on a high-frequency pulsating voltage injection method, filters are used to complete the extraction of high-frequency response signals for position observation. A finite impulse response (FIR) filter has the advantages of good stability and linear phase. However, the FIR filter designed by using traditional methods has a high order which will cause a large time delay. This paper proposes a low-order FIR filter design method for a high-frequency signal injection method in the permanent magnet linear synchronous motor. Based on the frequency characteristics o

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45

Chen, Junlei, Ying Fan, Wei Wang, Christopher H. T. Lee, and Yueqi Wang. "Sensorless Control for SynRM Drives Using a Pseudo-Random High-Frequency Triangular-Wave Current Signal Injection Scheme." IEEE Transactions on Power Electronics 37, no. 6 (2022): 7122–31. http://dx.doi.org/10.1109/tpel.2022.3140829.

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46

Reigosa, David, Daniel Fernandez, Tsutomu Tanimoto, Takashi Kato, and Fernando Briz. "Comparative Analysis of BEMF and Pulsating High-Frequency Current Injection Methods for PM Temperature Estimation in PMSMs." IEEE Transactions on Power Electronics 32, no. 5 (2017): 3691–99. http://dx.doi.org/10.1109/tpel.2016.2592478.

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47

Zhou, Xiao Min, Xiang Hua Ma, and Xin Qi. "Study on Wavelet De-Noising of High Frequency Current Signal for Rotor Position Self-Sensing of PMSM." Applied Mechanics and Materials 548-549 (April 2014): 1139–42. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.1139.

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Self-sensing control of permanent magnet synchronous motor has been a hot research topic of motor control technology, which has the advantages of low cost and high reliability. The use of a high-frequency carrier signal superimposed on the fundamental excitation of PMSM has established itself in recent years as a viable means of eliminating position sensors in ac drives for applications. In the carrier signal injection methods, the rotor position can be estimated by using the carrier signal current resulting from the interaction between the carrier signal voltage and the spatial saliency. The

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48

He, Peng, Yiping Liang, Wei Qi, Libing Bai, Quan Zhou, and Jie Zhang. "A high voltage capacitance measurement method based on alternating coupled signal injection." Review of Scientific Instruments 93, no. 4 (2022): 044704. http://dx.doi.org/10.1063/5.0085871.

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As high voltage pulse power capacitors, ceramic capacitors are widely used in high voltage pulse generators, trigger circuits, laser generators, and other fields. The capacitance of ceramic capacitors is closely related to the direct current (DC) bias voltage. However, the current capacitance measurement methods can only achieve a DC bias of 1 kV, which cannot meet the measurement requirements in high voltage environments. This paper proposes a capacitance measurement method that can accurately measure the capacitance under a DC bias of 3 kV. This method decouples the high DC bias voltage and

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Ren, Huiping, Li Fan, Na Liu, Zhengmao Wu, and Guangqiong Xia. "Generation of Broadband Optical Frequency Comb Based on a Gain-Switching 1550 nm Vertical-Cavity Surface-Emitting Laser under Optical Injection." Photonics 7, no. 4 (2020): 95. http://dx.doi.org/10.3390/photonics7040095.

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Abstract:

In this work, broadband optical frequency comb (OFC) generation by a gain-switching vertical-cavity surface-emitting laser (VCSEL) subject to optical injection is investigated experimentally. During implementing the experiment, a 1550 nm VCSEL under a large signal current modulation is driven into the gain-switching state with a broad noisy spectrum. By further introducing an optical injection, a high performance OFC can be produced. The experimental results demonstrate that the power and wavelength of the injection light seriously affect the performance of the produced OFC. Under proper optic

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Vahedi, Hani, Abdolreza Sheikholeslami, Mohammad Tavakoli Bina, and Mahmood Vahedi. "Review and Simulation of Fixed and Adaptive Hysteresis Current Control Considering Switching Losses and High-Frequency Harmonics." Advances in Power Electronics 2011 (June 28, 2011): 1–6. http://dx.doi.org/10.1155/2011/397872.

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Abstract:

Hysteresis Current Control (HCC) is widely used due to its simplicity in implementation, fast and accurate response. However, the main issue is its variable switching frequency which leads to extraswitching losses and injecting high-frequency harmonics into the system current. To solve this problem, adaptive hysteresis current control (AHCC) has been introduced which produces hysteresis bandwidth which instantaneously results in smoother and constant switching frequency. In this paper the instantaneous power theory is used to extract the harmonic components of system current. Then fixed-band h

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