Journal articles: 'Resonant converter with Piezoelectric transformers'

1

Engleitner, Raffael, José Renes Pinheiro, Fábio Ecke Bisogno, Matthias Radecker, and Yujia Yangy. "Normalized statical analysis with frequency and load variation for the class-E converter based on piezoelectric transformers." Sba: Controle & Automação Sociedade Brasileira de Automatica 22, no. 6 (December 2011): 573–84. http://dx.doi.org/10.1590/s0103-17592011000600003.

Full text

Abstract:

Piezoelectric transformers (PTs) allow the design of promising power supply applications, increasing efficiency, reducing size, facilitating the achievement of high transformation ratio, besides providing high immunity against electromagnetic noise. Due to the electrical equivalent model having resonant characteristics, some resonant topologies are used to build these power supplies, i.e. the Class-E converter. In order to make easier the analysis of high order converters, it's possible to use a normalized analysis method. The control of the Class-E converter using PTs is implemented through the switching frequency and duty cycle variation. The static gain is achieved though the switching frequency variation, while the duty cycle is adjusted with the purpose of achieving soft switching for different frequencies and loads. This paper shows a normalized analysis of this process, including a normalized frequency and load variation, without the need of design parameters. Experimental results for a 3W step-down converter are shown for a universal 85-260VAC input and out put voltage 6 V DC, to validate the proposed method.

APA, Harvard, Vancouver, ISO, and other styles

2

Jabbar, Hamid, Hyun Jun Jung, Jae Yong Cho, and Tae Hyun Sung. "Non-resonant piezoelectric transformer based power converter for ultra-low-power electronic devices." Sensors and Actuators A: Physical 244 (June 2016): 86–94. http://dx.doi.org/10.1016/j.sna.2016.04.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Lin, Bor-Ren, and Shin-Feng Wu. "ZVS Resonant Converter With Series-Connected Transformers." IEEE Transactions on Industrial Electronics 58, no. 8 (August 2011): 3547–54. http://dx.doi.org/10.1109/tie.2010.2089946.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Bedair, Sarah S., Jeffrey S. Pulskamp, Ronald G. Polcawich, Brian Morgan, Joel L. Martin, and Brian Power. "Thin-Film Piezoelectric-on-Silicon Resonant Transformers." Journal of Microelectromechanical Systems 22, no. 6 (December 2013): 1383–94. http://dx.doi.org/10.1109/jmems.2013.2262585.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Dallago, E., and A. Danioni. "Resonance frequency tracking control for piezoelectric transformer DC-DC converter." Electronics Letters 37, no. 22 (2001): 1317. http://dx.doi.org/10.1049/el:20010898.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Smith, T. A. "Harmonic resonant DC-DC converter for low coupling transformers." Electronics Letters 35, no. 16 (1999): 1290. http://dx.doi.org/10.1049/el:19990903.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Zhu, Tianyu, Jianze Wang, Yanchao Ji, and Yiqi Liu. "A Novel High Efficiency Quasi-Resonant Converter." Energies 11, no. 8 (July 27, 2018): 1961. http://dx.doi.org/10.3390/en11081961.

Full text

Abstract:

In this paper, a new constant-frequency quasi-resonant converter is proposed. Compared with the traditional LLC converter, the proposed converter can effectively reduce the range of the operating frequency. The output voltage is changed to adjust the reactance of the resonant cavity. The proposed converter has a better loss factor. To verify the theoretical analysis and soft-switching condition, a 250 W, 100 V output prototype was built and compared with the full-bridge LLC converter. Analysis and experimental results verify that a smaller operating frequency range and volume of the transformers, a soft-switching condition, and a higher overall efficiency are achieved with the proposed converter.

APA, Harvard, Vancouver, ISO, and other styles

8

Kim, Eun-Soo, and Jae-Sung Oh. "High-Efficiency Bidirectional LLC Resonant Converter with Primary Auxiliary Windings." Energies 12, no. 24 (December 10, 2019): 4692. http://dx.doi.org/10.3390/en12244692.

Full text

Abstract:

In this paper, high-efficiency bidirectional LLC resonant converters with primary auxiliary windings in transformers of resonant circuits are proposed. Even though resonant capacitors are used on the primary and secondary sides, the proposed converter can operate, regardless of the direction of the power flow, with the high gain characteristics of the LLC resonant converter without the mutual coupling of resonant capacitors. The operation principles and gain characteristics of the proposed bidirectional DC–DC converters are described in detail. A 3.3 kW prototyped bidirectional LLC resonant converter for interfacing 750 VDC buses was built and tested to verify the effectiveness and applicability of this proposed converter.

APA, Harvard, Vancouver, ISO, and other styles

9

Lin, B. R., and S. F. Wu. "Implementation of a series resonant converter with series–parallel transformers." IET Power Electronics 4, no. 8 (2011): 919. http://dx.doi.org/10.1049/iet-pel.2010.0333.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Chien, Chang‐Hung, Yeong‐Her Wang, and Bor‐Ren Lin. "Analysis of a novel resonant converter with series connected transformers." IET Power Electronics 6, no. 3 (March 2013): 611–23. http://dx.doi.org/10.1049/iet-pel.2012.0358.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Liu, Ruixin, Yifeng Wang, Qing Chen, Fuqiang Han, and Zhun Meng. "Entire Magnetic Integration Method of Multi-Transformers and Resonant Inductors for CLTLC Resonant Converter." Electronics 9, no. 9 (August 27, 2020): 1386. http://dx.doi.org/10.3390/electronics9091386.

Full text

Abstract:

An entire magnetic integration methodology of high efficiency printed circuit board (PCB) winding transformer for CLTLC (capacitor-inductor-transformer-inductor-capacitor) resonant converter is presented. All magnetic components in the converter, including two resonant inductors and two transformers, are integrated into an improved EIE (E-type and I-type and E-type) core structure. According to the matrix transformer concept and uneven winding distribution, the novel structure can be obtained by introducing an air gap to the center core leg. Thus, the magnetizing inductance and leakage inductance of the transformer can be controlled easily through adjusting the air gap reluctances. In addition, both the detailed mathematical analysis and the reluctance model of the transformer have been studied. Furthermore, a four-layer printed circuit board winding structure is chosen. The related winding arrangement is also discussed in depth. Finally, a 1 kW prototype with the presented structure is implemented to verify the validity of the theoretical analysis. Experimental results demonstrate that the proposed structure guarantees high efficiency within the entire load range. Peak efficiency of 96.62% can be ensured.

APA, Harvard, Vancouver, ISO, and other styles

12

Broeck, H. van der, and U. Schaaf. "Piezoelectric Motor Fed by a PLL-Controlledseries Resonant Converter." EPE Journal 8, no. 1-2 (June 1999): 55–60. http://dx.doi.org/10.1080/09398368.1998.11463426.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Inoue, Takeshi, Sunao Hamamura, Mitsuru Yamamoto, Atsushi Ochi, and Yasuhiro Sasaki. "AC–DC Converter Based on Parallel Drive of Two Piezoelectric Transformers." Japanese Journal of Applied Physics 47, no. 5 (May 23, 2008): 4011–14. http://dx.doi.org/10.1143/jjap.47.4011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Thenathayalan, Daniel, Chun-gu Lee, and Joung-Hu Park. "High-Order Resonant Converter Topology With Extremely Low-Coupling Contactless Transformers." IEEE Transactions on Power Electronics 31, no. 3 (March 2016): 2347–61. http://dx.doi.org/10.1109/tpel.2015.2435254.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Rani, M. Santhosh, Julie Samantaray, and Subhransu Sekhar Dash. "Analysis of Full Bridge Series Parallel Resonant Converter for Battery Chargers." Advanced Materials Research 768 (September 2013): 388–91. http://dx.doi.org/10.4028/www.scientific.net/amr.768.388.

Full text

Abstract:

This paper presents a novel application of full-bridge series parallel resonant converter (FBSPRC) for dc source and secondary battery interface. Secondary batteries has been widely used in the application of residential, industrial and commercial energy storage systems because of its low energy conversion loss, which enhances the systems overall efficiency. A series parallel loaded resonant converter (SPRC) which is a subset of DC-DC converter can be operated with either zero-voltage turn-on (above resonant frequency) or zero current turn off (below resonant frequency) to eliminate the turn on and turn-off losses of the semiconductor devices. This converter is widely used to achieve reduction in size of the passive components of the converter such as inductor, capacitor and transformers. Simulation results based on a 12V 45Ah battery charger are proposed to validate the analysis and to demonstrate the performance of the proposed approach. Satisfactory performance is obtained from the measured results. The simulation results validate the effectiveness of the chosen battery charger.

APA, Harvard, Vancouver, ISO, and other styles

16

Yoo, Doo-Hee, and Gang-Youl Jeong. "Current Unbalance Improved Half-bridge LLC Resonant Converter using the Two Transformers." Journal of the Korea Academia-Industrial cooperation Society 11, no. 2 (February 28, 2010): 497–507. http://dx.doi.org/10.5762/kais.2010.11.2.497.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Lin, B. R., and S. F. Wu. "Analysis of a resonant converter with two transformers and voltage doubler rectifier." IET Power Electronics 4, no. 4 (2011): 400. http://dx.doi.org/10.1049/iet-pel.2010.0121.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Diao, Weidong, Xinxin Liao, and Zhihua Feng. "Reducing the resonant frequency difference of piezoelectric transformers parallel system with mechanical coupling." Ferroelectrics Letters Section 47, no. 1-3 (January 24, 2020): 27–39. http://dx.doi.org/10.1080/07315171.2020.1799632.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Casadei, Filippo, Benjamin S. Beck, Kenneth A. Cunefare, and Massimo Ruzzene. "Vibration control of plates through hybrid configurations of periodic piezoelectric shunts." Journal of Intelligent Material Systems and Structures 23, no. 10 (May 6, 2012): 1169–77. http://dx.doi.org/10.1177/1045389x12443014.

Full text

Abstract:

Periodic arrays of hybrid-shunted piezoelectric actuators are used to suppress vibrations of an aluminum plate over broad frequency bands. Commonly, piezoelectric-shunted networks are used for individual mode control, through tuned, resonant resistive/inductive circuits, and for broadband vibration attenuation, through negative impedance converters. Periodically placed resonant shunts allow for broadband reduction resulting from the attenuation of propagating waves in frequency bands which are defined by the spatial periodicity of the array and by the shunting parameters considered on the circuit. Such attenuation typically occurs at medium–high frequencies, while negative impedance converter networks are effective in reducing the vibration amplitudes of the lower modes of the structure. In this article, the combination of periodic resonant shunts and negative impedance converter networks on the same aluminum panel is studied to verify the possibility of combining the advantages of the two concepts. Both numerical and experimental investigations demonstrate that broadband attenuation is achieved in the mid–high frequency regimes due to the presence of resistive/inductive networks, while the combination with negative impedance converter circuits is responsible for amplitude reduction of the full frequency spectrum. Numerical simulations and frequency response measurements on a plate demonstrate that an attenuation region of about 1000 Hz is achieved with a maximum 8 dB vibration reduction.

APA, Harvard, Vancouver, ISO, and other styles

20

Renzi, E. "Hydroelectromechanical modelling of a piezoelectric wave energy converter." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, no. 2195 (November 2016): 20160715. http://dx.doi.org/10.1098/rspa.2016.0715.

Full text

Abstract:

We investigate the hydroelectromechanical-coupled dynamics of a piezoelectric wave energy converter. The converter is made of a flexible bimorph plate, clamped at its ends and forced to motion by incident ocean surface waves. The piezoceramic layers are connected in series and transform the elastic motion of the plate into useful electricity by means of the piezoelectric effect. By using a distributed-parameter analytical approach, we couple the linear piezoelectric constitutive equations for the plate with the potential-flow equations for the surface water waves. The resulting system of governing partial differential equations yields a new hydroelectromechanical dispersion relation, whose complex roots are determined with a numerical approach. The effect of the piezoelectric coupling in the hydroelastic domain generates a system of short- and long-crested weakly damped progressive waves travelling along the plate. We show that the short-crested flexural wave component gives a dominant contribution to the generated power. We determine the hydroelectromechanical resonant periods of the device, at which the power output is significant.

APA, Harvard, Vancouver, ISO, and other styles

21

Lo, Yu-Kang, Jing-Yuan Lin, and Chung-Yi Lin. "Analysis and design of a half-bridge LLC series resonant converter employing two transformers." International Journal of Circuit Theory and Applications 40, no. 10 (March 29, 2011): 985–98. http://dx.doi.org/10.1002/cta.767.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Ortiz, Gabriel, Michael Georg Leibl, Jonas Emanuel Huber, and Johann Walter Kolar. "Design and Experimental Testing of a Resonant DC–DC Converter for Solid-State Transformers." IEEE Transactions on Power Electronics 32, no. 10 (October 2017): 7534–42. http://dx.doi.org/10.1109/tpel.2016.2637827.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Ren, Xiaoyong, Zhi-Wei Xu, Zhiliang Zhang, Haoran Li, Mingxie He, Jiachen Tang, and Qianhong Chen. "A 1-kV Input SiC LLC Converter With Split Resonant Tanks and Matrix Transformers." IEEE Transactions on Power Electronics 34, no. 11 (November 2019): 10446–57. http://dx.doi.org/10.1109/tpel.2019.2896099.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Kwon, Jaean, and Rae-Young Kim. "High Power Density, High-Voltage Parallel Resonant Converter Using Parasitic Capacitance on the Secondary Side of a Transformer." Electronics 10, no. 14 (July 19, 2021): 1736. http://dx.doi.org/10.3390/electronics10141736.

Full text

Abstract:

High-voltage DC power supplies are used in several applications, including X-ray, plasma, electrostatic precipitator, and capacitor charging. However, such a high-voltage power supply has problems, such as a decrease in reliability, owing to an increase in output ripple voltage, and a decrease in power density, owing to an increase in volume. Therefore, this study proposes a method for improving the power density of a parallel resonant converter using the parasitic capacitor of the secondary side of the transformer. Due to the fact that high-voltage power supplies have many turns on the secondary side, a significant number of parasitic capacitors are generated. In addition, in the case of a parallel resonant converter, because the transformer and the primary resonant capacitor are connected in parallel, the parasitic capacitor component generated on the secondary side of the transformer can be equalized and used. A parallel cap-less resonant converter structure developed using the parasitic components of such transformers is proposed. Primary side and secondary side equivalent model analyses are conducted in order to derive new equations and gain waveforms. Finally, the validity of the proposed structure is verified experimentally.

APA, Harvard, Vancouver, ISO, and other styles

25

Chang, Yong Nong, Hung Liang Cheng, and Chih Ming Kuo. "Design of Dimmable LED Lighting for DC Storage Power Supply." Applied Mechanics and Materials 311 (February 2013): 238–42. http://dx.doi.org/10.4028/www.scientific.net/amm.311.238.

Full text

Abstract:

In this paper, a dimmable LED lighting driving circuit with high efficiency for DC storage power supply is proposed. In this research, Class-E resonant converter is principal circuit structure and possesses superior efficiency in the power converter. LED lighting set accompanied with multiple transformers in cascade are employed, which can improve current uniform problem and increase operating reliability. Furthermore, integral cycle switching technique will be utilized to implement the dimmer design, integral cycle switching control dimmer possesses the advantage of zero-current-switching (ZCS) and can effectively promote the operating efficiency

APA, Harvard, Vancouver, ISO, and other styles

26

Wu, Yongye, Zhanlong Zhang, Rui Xiao, Peiyu Jiang, Zijian Dong, and Jun Deng. "Operation State Identification Method for Converter Transformers Based on Vibration Detection Technology and Deep Belief Network Optimization Algorithm." Actuators 10, no. 3 (March 11, 2021): 56. http://dx.doi.org/10.3390/act10030056.

Full text

Abstract:

The converter transformer is a special power transformer that connects the converter bridge to the AC system in the HVDC transmission system. Due to the special structure of the converter transformer, it is necessary to test its operation state during its manufacture and processing to ensure the safety of its future connection to the grid. Numerous studies have shown that vibration signals in transformers can reflect their operating state. Therefore, in order to achieve an effective identification of the operation state of the converter transformer, this paper proposes a method for identifying the operation state of the converter transformer based on vibration detection technology and a deep belief network optimization algorithm. This paper firstly describes the background, principle and application of vibration detection technology, using vibration measurement systems with piezoelectric acceleration sensors, piezoelectric actuators and data acquisition instruments to collect vibration signals at different measurement points on the converter transformer in states of no-load and on-load. By analyzing the time-frequency characteristics of the vibration signals, fast Fourier transform (FFT), wavelet packet decomposition (WPD) and time domain indexes (TDI) are combined into a fused feature extraction method to extract the eigenvalues of the vibration signals, so that the fused eigenvectors of the signals can be constructed. Considering the excellent performance of deep learning in classification, the deep belief network is used to classify the signals’ eigenvectors. To effectively improve the network classification efficiency, the sparrow search algorithm was introduced to build a mathematical model based on the behavioral characteristics of sparrow populations and combine the model with a deep belief network, so as to achieve adaptive parameter optimization of the network and accurate classification of the signals’ eigenvectors. The proposed method is applied to a 500 kV converter transformer for experimental verification. The experimental results show that the fused feature extraction method was able to fully extract the features of the vibration signal, and the deep belief network optimization algorithm had higher classification accuracy and better operational efficiency, and was able to effectively achieve accurate identification of the operation state of the converter transformer. In addition, the method achieved a precision response to the detection results of the vibration sensors, contributing to future improvements in converter transformer manufacturing technology.

APA, Harvard, Vancouver, ISO, and other styles

27

Xiping, He, and Zhang Haidao. "A Directional Converter of Longitudinal Vibration with One Input and Multiple Outputs." Acta Acustica united with Acustica 105, no. 5 (July 1, 2019): 753–58. http://dx.doi.org/10.3813/aaa.919355.

Full text

Abstract:

Traditional power ultrasonic vibration systems can process one object at one time and only have one output. A directional converter of longitudinal vibration with multiple outputs composed of an input rod, a hemispherical vibrator, and three output rods is presented. The frequency equation used in the design is derived with free edges at the input and output ends of the converter, as well as the continuity of displacements, forces, and angles of rotation at each component junction. The resonant frequencies of three fabricated converters designed using the proposed method are in good agreement with those from the finite element method and also with tested values. With the input end of the converter joined with a piezoelectric transducer with a resonant frequency of 19.8 kHz, the longitudinal vibration modes and displacement amplitudes of the output ends of the three converters at their resonant frequencies are tested. The results show that longitudinal vibration can be transferred from the input end to the multi-output ends through the converter. Furthermore, there exists a linear relationship between the excitation voltage and the displacements of each output of the converter.

APA, Harvard, Vancouver, ISO, and other styles

28

Tang, Liling, and Feng Jin. "Influence of viscoelastic interfaces on power transmission through an elastic plate by finite piezoelectric transducers." Journal of Vibration and Control 23, no. 7 (August 9, 2016): 1193–205. http://dx.doi.org/10.1177/1077546315591335.

Full text

Abstract:

A finite elastic plate, partially covered by piezoelectric patches on two sides to periodically charge or recharge electronic devices operating in a sealed armor, is considered to study the effects of a viscoelastic interface on the resonant frequency, transformation ratio, efficiency, displacement and stress distributions of the structure. Based on the shear-slip model, we apply the Fourier series method to analyze the symmetric thickness-twist modes of the system containing an imperfect viscoelastic interface. An examination of the numerical results confirms the good convergence and high precision of the Fourier series method. If an appropriate thickness ratio is chosen, the energy-trapping phenomenon is well presented. The numerical results also reveal that the transformation ratio, efficiency and displacement of the system decrease for weaker interfaces, whereas the resonant frequency is not sensitive to interface damping parameters. This result could provide a theoretical guide to design high-performance piezoelectric plate transformers.

APA, Harvard, Vancouver, ISO, and other styles

29

Shen, Yanxia, Wenhui Zhao, Zhe Chen, and Chengchao Cai. "Full-Bridge LLC Resonant Converter With Series-Parallel Connected Transformers for Electric Vehicle On-Board Charger." IEEE Access 6 (2018): 13490–500. http://dx.doi.org/10.1109/access.2018.2811760.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Yi, KangHyun. "Capacitive Coupling Wireless Power Transfer with Quasi-LLC Resonant Converter Using Electric Vehicles’ Windows." Electronics 9, no. 4 (April 21, 2020): 676. http://dx.doi.org/10.3390/electronics9040676.

Full text

Abstract:

This paper proposes a new capacitive coupling wireless power transfer method for charging electric vehicles. Capacitive coupling wireless power transfer can replace conventional inductive coupling wireless power transfer because it has negligible eddy-current loss, relatively low cost and weight, and good misalignment performance. However, capacitive coupling wireless power transfer has a limitation in charging electric vehicles due to too small coupling capacitance via air with a very high frequency operation. The new capacitive wireless power transfer uses glass as a dielectric layer in a vehicle. The area and dielectric permittivity of a vehicle’s glass is large; hence, a high capacity coupling capacitor can be obtained. In addition, switching losses of a power conversion circuit are reduced by quasi-LLC resonant operation with two transformers. As a result, the proposed system can transfer large power and has high efficiency. A 1.6 kW prototype was designed to verify the operation and features of the proposed system, and it has a high efficiency of 96%.

APA, Harvard, Vancouver, ISO, and other styles

31

Liu, Yuan-Ping, Dejan Vasic, François Costa, Wen-Jong Wu, and Chih-Kung Lee. "Design of fixed frequency controlled radial-mode stacked disk-type piezoelectric transformers for DC/DC converter applications." Smart Materials and Structures 18, no. 8 (July 23, 2009): 085025. http://dx.doi.org/10.1088/0964-1726/18/8/085025.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Subramanian, Arulmozhi, and Santha KR. "Review of multiport isolated bidirectional converter interfacing renewable and energy storage system." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 1 (March 1, 2020): 466. http://dx.doi.org/10.11591/ijpeds.v11.i1.pp466-467.

Full text

Abstract:

<p>Multi port converters increasingly gain prominance in the recent past to interface renewable energy sources like photovoltaic cells, fuel cells with the load. Energy storage elements like battery and supercapacitors nd major place as an additional and alternate sources in systems with primary renewable energy sources to overcome its intermittency issues. As these energy storage element's charging and discharging cycles are to be controlled, an isolated bidirectional converter topology with transformer is used. The galvanic isolation provided by the high frequency ac link transformers in partly isolated and fully isolated topologies makes these converters most preferrable in high power applications like electric vehicles. A comprehensive review is performed on various three port partly isolated and fully isolated topologies addressed by dierent research groups. The key contributions on soft switching for reducing switching losses and improving overall converter efficiency with help of resonant elements are discussed. In addition, control strategies for power ow control with enhanced soft switching of partly isolated converters are highlighted. A summary of converter topologies is provided comparing power rating, device count, soft switching resonant elements and efficiency which gives an idea for selection of suitable topology for the desired system requirement.</p>

APA, Harvard, Vancouver, ISO, and other styles

33

Jianhua, Gu, Henadiy Pavlov, Miлhaylo Pokrovskyi, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. MATHEMATICAL MODEL OF THE RESONANT CONVERTER WITH A SERIES CONNECTION OF THE PRIMARY AND SECONDARY CIRCUIT CAPACITORS AT PULSE-COUNT ADJUSTMENT AND PHASE SHIFT CONTROL." Science Journal Innovation Technologies Transfer, no. 2019-1 (February 2, 2019): 55–60. http://dx.doi.org/10.36381/iamsti.1.2019.55-60.

Full text

Abstract:

The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

APA, Harvard, Vancouver, ISO, and other styles

34

Weidong, Hui, Henadiy Pavlov, Pokrovskyi Mykhailo, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. ANALYSIS OF THE CHARACTERISTICS OF THE RESONANT CONVERTER FOR CONTACTLESS INDUCTIVE ENERGY TRANSMISSION." Science Journal Innovation Technologies Transfer, no. 2019-2 (May 5, 2019): 62–68. http://dx.doi.org/10.36381/iamsti.2.2019.62-68.

Full text

Abstract:

The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

APA, Harvard, Vancouver, ISO, and other styles

35

Qi, Gu, Henadiy Pavlov, Mykhailo Pokrovskyi, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. CHARACTERISTICS OF THE RESONANT CONVERTER FOR CONTACTLESS INDUCTIVE ENERGY TRANSMISSION." Science Journal Innovation Technologies Transfer, no. 2019-3 (July 7, 2019): 67–74. http://dx.doi.org/10.36381/iamsti.3.2019.67-74.

Full text

Abstract:

The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

APA, Harvard, Vancouver, ISO, and other styles

36

ChunXiang, Huang, Henadiy Pavlov, Mykhailo Pokrovskyi, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. STATIC CHARACTERISTICS OF A SERIES-TO-SERIES RESONANT CONVERTER FOR CONTACTLESS INDUCTIVE ENERGY TRANSMISSION." Science Journal Innovation Technologies Transfer, no. 2019-4 (September 1, 2019): 56–61. http://dx.doi.org/10.36381/iamsti.4.2019.56-61.

Full text

Abstract:

The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of halfcycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.

APA, Harvard, Vancouver, ISO, and other styles

37

Vatavu, Marian, Vasile Nastasescu, Flaviu Turcu, and Ioan Burda. "Voltage-Controlled Synthetic Inductors for Resonant Piezoelectric Shunt Damping: A Comparative Analysis." Applied Sciences 9, no. 22 (November 8, 2019): 4777. http://dx.doi.org/10.3390/app9224777.

Full text

Abstract:

In this paper, the design, simulations, and experimental results related to new analog circuits for voltage controlled synthetic inductors (VCSI) are presented. The new circuits based on a generalized impedance converter (GIC) are proposed for adaptive resonant piezoelectric shunt damping. The VCSIs are implemented using (1) an analog multiplier and (2) an operational transconductance amplifier (OTA) as voltage-controlled resistor. The simulation and experimental results for the new proposed VCSIs are presented and a comparative analysis follows. The proposed VCSIs work in a stable manner in parallel with negative impedance converters (NIC) to enhance structural damping in resonant piezoelectric resistive-inductive shunt applications. The behavior of the synthetic inductor is identical to a real inductor only in a specific frequency range and this situation can explain the reported spreading performance in the literature for resonant piezoelectric shunt damping. The simulation results are validated by a group of experimental investigations that confirm the improved stability and linearity of the new circuits proposed as VCSIs. Experimental results show that the VCSI based on an analog multiplier have an enhanced linearity in comparison with the OTA version in a limited voltage control range.

APA, Harvard, Vancouver, ISO, and other styles

38

Kozielski, Lucjan, and Malgorzata Plonska. "Optic and Piezoelectric Coupling in the Sol-Gel PLZT Electroceramics." Materials Science Forum 730-732 (November 2012): 129–34. http://dx.doi.org/10.4028/www.scientific.net/msf.730-732.129.

Full text

Abstract:

PZT ceramic system with presence of La contents, have been proposed and prepared using sol gel sintering method for practical application of photostriction, which is the superposition of photovoltaic and piezoelectric effects. Such a ceramics produced by conventional mixing oxide method does not exhibit photostrictive properties due to the defects and inhomogeneous distribution of grains and pores. In this study, an investigated lanthanium(III) doped PZT ceramics were obtained by sol-gel technique from the organometallic precursors. It was found that fabricated material were effective in the enhancement of photovoltaic and photostrictive properties. Consequently, lanthanium influence deviation of piezoelectric parameters were studied as a function UV light illumination. For the determination lighting dependancy of the transformation parameters the resonant and antiresonant method was implemented. The improved Piezoelectric Transformer structure successfully changed gain characteristics proportionally to light intensity. The authors invention of a light driven output gain adjustment in Piezoelectric Transformers (PT) yields a novel “smart” multifunctional wireless device. This new created application area can be utilized in self-adopting shutters in photo cameras due to improved sensitivity to surrounding illumination conditions.

APA, Harvard, Vancouver, ISO, and other styles

39

Leelachariyakul, Banyat, and Peerawut Yutthagowith. "Resonant Power Frequency Converter and Application in High-Voltage and Partial Discharge Test of a Voltage Transformer." Energies 14, no. 7 (April 5, 2021): 2014. http://dx.doi.org/10.3390/en14072014.

Full text

Abstract:

This paper presents application of a resonant power frequency converter for high-voltage (HV) and partial discharge (PD) test of a voltage transformer. The rating voltage, power, and frequency of the system are 70 kVrms, 40 kVA, and 200 Hz, respectively. The testing system utilized the converter feeding to an HV testing transformer connected to a conventional partial discharge detection system. The converter system comprising a rectifier and insulated-gate bipolar (IGBT) switches with the H-bridge configuration was applied as a low-voltage source instead of a conventional motor-generator test set which requires large space and high cost. The requirements of the test according to the standards are quality of the test voltage and the background noise level. The required voltage must have the different voltage (DV) and total harmonic distortion (THDv) in the acceptable values of less than 5%. The DV is defined as the difference of the root mean square and peak voltages in percent. The required background noise level must be lower than 2.5 pC. Simulations and experiments were performed for verification of the developed system performance in comparison with those of the previously developed system based on the pulse width modulation converter. It is found that the developed system can provide the testing voltage with the DV and the THDv of lower than 1% and the background noise level of lower than 1 pC. Considering this achievement of promising performance, the developed system is an attractive choice for the HV and PD testing of voltage transformers in real practice.

APA, Harvard, Vancouver, ISO, and other styles

40

Shu, Liangcai, Wu Chen, Guangfu Ning, Wu Cao, Jun Mei, Jianfeng Zhao, Chun Liu, and Guoqing He. "A Resonant ZVZCS DC–DC Converter With Two Uneven Transformers for an MVDC Collection System of Offshore Wind Farms." IEEE Transactions on Industrial Electronics 64, no. 10 (October 2017): 7886–95. http://dx.doi.org/10.1109/tie.2017.2694389.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Kobori, Yasunori, Noriyuki Oiwa, Shogo Katayama, Ahmad Bustoni, Yi Fei Sun, Minh Tri Tran, Anna Kuwana, and Haruo Kobayashi. "EMI Reduction of PFC Rectifier and LLC Converter with Automatic Output Ripple Improvement." Advanced Engineering Forum 38 (November 2020): 103–17. http://dx.doi.org/10.4028/www.scientific.net/aef.38.103.

Full text

Abstract:

This paper proposes the method of the Electro-Magnetic Interference (EMI) noise reduction of the AC-DC rectifiers and the DC-DC converters with the insulated transformers. For the Power Factor Correction (PFC) rectifier, the power factor is the most important item, but the EMI noise emitted from the clock pulse is not remarked. For the DC-DC converters such as the forward converter, the efficiency is the most important. We have focused on the EMI noise reduction for the PFC rectifier and insulated DC-DC converters with the frequency modulation of the clock pulses. First, the spectrum level of the clock pulse is introduced to be much reduced by shaking the clock frequency for the PFC rectifier and the forward converter. Next, we have investigated the EMI reduction of the LLC converter whose operating frequency varies to make the output voltage stable. It is difficult to modify the operating frequency to reduce the EMI noise. We have investigated to reduce the EMI noise by shaking the duty ratio of the resonant signals for the LLC converter. In this case, the output voltage ripple is increased by much EMI noise reduction. Finally, the technology to stabilize the increased ripple is introduced.

APA, Harvard, Vancouver, ISO, and other styles

42

Tsai, Cheng Che, Hsiang Ho Hsieh, Sheng Yuan Chu, Zong You Chen, and S. K. Huang. "Characterizations of (Mn, Sb) Co-Tuned PZMNS-PZT Piezoelectric Ceramics in the Morphotropic Phase Boundary and their Applications on Multi-Bulk Step-Down Piezoelectric Transformers." Key Engineering Materials 655 (July 2015): 147–52. http://dx.doi.org/10.4028/www.scientific.net/kem.655.147.

Full text

Abstract:

In this study, the (Mn, Sb) co-tuned PbCa0.01[(MnxZn0.1-x)1/3(SbxNb0.1-x)2/3 (Zr0.505Ti0.4895)0.9]O3 (PCZMNSZT-100x) ceramics were prepared near the morphotropic phase boundary (MPB) using the wolframite precursor method. The phase structure evolutions, electrical and temperature stability properties were systematically investigated. As the fraction of rhombohedral phase increases, the degree of disorder in the diffused phase transition (DPT) correspondingly increased and the “hard” piezoelectric characterization would be enhanced. Moreover, the temperature change rate of k, Qm and fr can be tuned by adjusting the x content. The specimens with x=0.08 exhibit the obtained values as kp ~ 0.50, kt ~ 0.52, Qm ~ 1550, and the low temperature change rate of properties having Δfr/fr = -0.02% and ΔQm/Qm = 10.5%, up to 100 °C. To evaluate the material feasibility, the proposed multi-bulk step-down transformers using a ring/dot structure are fabricated. Their obtained electrical properties have a maximum efficiency of 92% with an output power of 15 W, a voltage gain of 0.68 and a nearly zero temperature change rate of resonant frequency are found at the load of 100 Ω.

APA, Harvard, Vancouver, ISO, and other styles

43

Elliott, Alwyn D. T., Lindsay M. Miller, Einar Halvorsen, Paul K. Wright, and Paul D. Mitcheson. "Comparison between MEMS and Meso Scale Piezoelectric Energy Harvesters." Advances in Science and Technology 100 (October 2016): 109–14. http://dx.doi.org/10.4028/www.scientific.net/ast.100.109.

Full text

Abstract:

Manufacture of piezoelectric energy harvesters typically assumes bulk piezoelectric material for the transducer until the reduction in size of the device prevents this. However when designing piezoelectric harvesters, the complete system must be taken into account including the transducer, power circuit, and battery, as these will impose restrictions on what can be achieved. Therefore a comparison between MEMS and meso-scale piezoelectric energy harvesting systems using a fully parametrised model is required. The comparison was restricted to a piezoelectric beam with a mass at the end connected to a single supply pre-biasing circuit to provide the optimal damping force and rectification. A buck converter was used to transfer extracted energy to a 1.5V battery. The results indicate that for devices with a volume side length less than 16.25 mm, no device using meso-scale properties can be made to resonant at 100 Hz or less due to the length and stiffness of the beam. Whereas above this limit, the voltage required to damp devices with MEMS scale properties causes a breakdown in the dielectric. We present a comparison of the theoretical limits of MEMS and meso-scale piezoelectric harvesters to provide design insight for future devices to maximise power generation.

APA, Harvard, Vancouver, ISO, and other styles

44

Jiang, H. J., and G. Maggetto. "Identification of steady-state operational modes of the series resonant DC-DC converter based on loosely coupled transformers in below-resonance operation." IEEE Transactions on Power Electronics 14, no. 2 (March 1999): 359–71. http://dx.doi.org/10.1109/63.750190.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Kostinskiy, S. S. "Review and results of studies of the harmonic composition of the current consumed by low-power frequency converters, as well as methods and devices to reduce their negative impact on power supply systems." Power engineering: research, equipment, technology 22, no. 2 (May 15, 2020): 27–42. http://dx.doi.org/10.30724/1998-9903-2020-22-2-27-42.

Full text

Abstract:

The ACS150 frequency Converter was chosen as the object for experimental research. On the basis of the measurements it is concluded that in the spectral composition of current drawn by the frequency Converter, in addition to currents the main harmonic component is dominated by currents 5, 7, 11, 13, and 17th harmonics, i.e. harmonic components of odd non-multiple of three. Currents 3, 9 and 15 th harmonic components are also present in the spectral composition, but their value is much smaller. Also, based on the data obtained, it can be argued that with a decrease in the frequency of motor speed control and the load value of the frequency Converter, the number of pulsations on the current waveform increases, as a result, there is an increase in the values of the higher harmonic components and an increase in the value of the total harmonic components of the current. The main contribution to the increase in the index of the total harmonic components of the amperage with a decrease in the load of the frequency Converter and the output frequency of the motor speed control is made by odd harmonic components of the amperage multiple of three, at the same time harmonic components of the amperage non-multiple of three, namely the 5th and 7th order, are not subject to change. A brief review of technical solutions aimed at improving the electromagnetic compatibility of asynchronous frequency-controlled drive is given. In particular, such solutions as increasing the number of semiconductor switches used in inverters, improving control modes, the use of special separation transformers, passive (resonant) and active filters are noted.

APA, Harvard, Vancouver, ISO, and other styles

46

Savarimuthu, Kirubaveni, Radha Sankararajan, and Sudha Murugesan. "Design and implementation of piezoelectric energy harvesting circuit." Circuit World 43, no. 2 (May 2, 2017): 63–71. http://dx.doi.org/10.1108/cw-12-2016-0065.

Full text

Abstract:

Purpose The purpose of this paper is to present the design of a piezoelectric vibration energy generator with a power conditioning circuit to power a wireless sensor node. Frequency and voltage characterization of the piezoelectric energy harvester is performed. A single-stage AC–DC power converter that integrates the rectification and boosting circuit is designed, simulated and implemented in hardware. Design/methodology/approach The designed power conditioning circuit incorporates bridgeless boost rectification, a lithium ion battery as an energy storage unit and voltage regulation to extract maximum power from PZT-5H and to attain higher efficiency. The sensor node is modelled in active and sleep states on the basis of the power consumption. Dynamic modelling of the lithium ion battery with its state of charging and discharging is analysed. Findings The test result shows that the energy harvester produces a maximum power of 65.9 mW at the resonant frequency of 21.4 Hz. The designed circuit will operate even at a minimum input voltage of 0.5 V. The output from the harvester is rectified, boosted to a 7-V DC output and regulated to 3.3 V to the power C_Mote wireless sensor node. The conversion efficiency of the circuit is improved to 70.03 per cent with a reduced loss of 19.76 mW. Originality/value The performance of the energy harvester and the single-stage power conditioning circuit is analysed. Further, the design and implementation of the proposed circuit lead to an improved conversion efficiency of 70.03 per cent with a reduced loss of 19.76 mW. The vibration energy harvester is integrated with a power conditioning circuit to power a wireless sensor node C_Mote. The piezoelectric vibration energy harvester is implemented in real time to power C_Mote.

APA, Harvard, Vancouver, ISO, and other styles

47

Anikin, Pavel, Gennady Kursakin, and Iuliia Fedotova. "Improvement of the automated seismic and acoustic monitoring system “Prognoz-ADS” main elements." E3S Web of Conferences 192 (2020): 04014. http://dx.doi.org/10.1051/e3sconf/202019204014.

Full text

Abstract:

The results of theoretical and experimental studies have established the need to improve and modernize the highly sensitive piezoelectric resonant type PeA12 converters used in the seismic monitoring system, which have been successfully used for more than 30 years in the rock mass at a number of rockburst hazardous mines. The main problem of the accuracy measurement by the geophone PeA12 (and other models based on it) is due to the presence of several resonances in the operating frequency band. The developed upgraded model of the AP2088 converter has successfully passed industrial testing as part of the automated monitoring system “Prognoz-ADS” at rockburst hazardous mine. During the test period (more than 1 year), seismoacoustic events were registered and verified in the rock mass, including rock burst and shocks in the rock mass. Thus, the use of highly sensitive (u10 V/m•s-2) piezoacoustic converters AP2088 as part of the automated system provides registration of acoustic emission in the rock mass in the frequency range from 0.1 to 10 kHz with the energy of seismic events from 10 to 106 J, which will increase the reliability of the forecast of geodynamic phenomena and technogenic seismicity in the control zone of the system.

APA, Harvard, Vancouver, ISO, and other styles

48

Pinzón Ardila, Omar. "Modelado de un Recuperador Dinámico de Tensión para el Mejoramiento de la Calidad de la Onda de Tensión." BISTUA REVISTA DE LA FACULTAD DE CIENCIAS BASICAS 14, no. 1 (May 4, 2016): 62. http://dx.doi.org/10.24054/01204211.v1.n1.2016.1938.

Full text

Abstract:

[1] R. C. Dugan, H. W. Beaty, y S. Santoso, Electrical Power Systems Quality, Third edition. Tata McGraw Hill Education, 2012.[2] J. Arrilaga y N. R. Watson, Power System Harmonics. Jhon Wiley and Sons, 2003.[3] H. Kim, F. Blaabjerg, B. Bak-Jensen, y J. Choi, «Instantaneous power compensation in three-phase systems by using p-q-r theory», en Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual, 2001, vol. 2, pp. 478–485 vol.2.[4] J. G. Nielsen y F. Blaabjerg, «Comparison of system topologies for dynamic voltage restorers», en Conference Record of the 2001 IEEE Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting, 2001, vol. 4, pp. 2397–2403 vol.4.[5] M. Vilathgamuwa, A. A. . Ranjith Perera, S. S. Choi, y K. J. Tseng, «Control of energy optimized dynamic voltage restorer»,88presentado en The 25th Annual Conference of the IEEE Industrial Electronics Society, 1999. IECON ’99 Proceedings, 1999, vol. 2, pp. 873-878 vol.2.[6] N. H. Woodley, L. Morgan, y A. Sundaram, «Experience with an inverter-based dynamic voltage restorer», IEEE Trans. Power Deliv., vol. 14, n.o 3, pp. 1181-1186, jul. 1999.[7] M. D. Stump, G. J. Keane, y F. K. S. Leong, «The role of custom power products in enhancing power quality at industrial facilities», en 1998 International Conference on Energy Management and Power Delivery, 1998. Proceedings of EMPD ’98, 1998, vol. 2, pp. 507–517 vol.2.[8] UNE, Características de la Tensión Suministrada Por Las Redes Generales de Distribución, UNE-EN 50160. UNE, 1996.[9] M. P. Kazmierkowski y L. Malesani, «Current control techniques for three-phase voltage-source PWM converters: a survey», Ind. Electron. IEEE Trans. On, vol. 45, n.o 5, pp. 691–703, 1998.[10] G. A. de Almeida Carlos, E. C. dos Santos, C. B. Jacobina, y J. P. R. A. Mello, «Dynamic Voltage Restorer Based on Three-Phase Inverters Cascaded Through an Open-End Winding Transformer», IEEE Trans. Power Electron., vol. 31, n.o 1, pp. 188-199, ene. 2016.[11] S. Andrews y S. Joshi, «Performance Improvement of Dynamic Voltage Restorer using Proportional - Resonant Controller», en Renewable Energy and Energy Management; Proceedings of PCIM Europe 2015; International Exhibition and Conference for Power Electronics, Intelligent Motion, 2015, pp. 1-8.[12] A. M. Rauf y V. Khadkikar, «An Enhanced Voltage Sag Compensation Scheme for Dynamic Voltage Restorer», IEEE Trans. Ind. Electron., vol. 62, n.o 5, pp. 2683-2692, may 2015.[13] Craig Muller, User’s Guide on the Use of PSCAD. Manitoba, Canada: Manitoba HVDC Research Centre, 2010.[14] Rohitha Jayasinghe, User’s Guide. A Comprehensive Resourse for EMTDC. Manitoba, Canada: Manitoba HVDC Research Centre, 2010.[15] L. A. Moran, J. W. Dixon, y R. R. Wallace, «A Three-Phase Active Power Filter Operating with Fixed Switching Frequency for Reactive Power and Current Harmonic Compensation», Ind. Electron. IEEE Trans. On, vol. 42, n.o 4, pp. 402 -408, ago. 1995.[16] S. Bhattacharya y D. Divian, «Synchronous frame based controller implementation for hybrid series active filters system», Proceeding 1995 IEEEIAS Annu. Meet., pp. 2531-2540, 1995.[17] J. G. Nielsen y F. Blaabjerg, «A detailed comparison of system topologies for dynamic voltage restorers», IEEE Trans. Ind. Appl., vol. 41, n.o 5, pp. 1272- 1280, oct. 2005.[18] J. Arrillaga, N. R. Watson, y S. Chen, Power System Quality Assessment. Jhon Wiley and Sons, 2000.[19] V. B. Bhavaraju y P. Enjeti, «A Fast Active Power Filter to Correct Line Voltage Sag», IEEE Trans, vol. IE-41, n.o 3, pp. 333-338, 1994.[20] G. Blajszczak, «Direct Method for Voltage Distortion Compensation in Power Network Bay Series Converter Filter», IEE Proc Electr Power Appl, vol. 142, n.o 5, pp. 308-312, 1995.[21] H. Akagi, «New Trends in Active Filters for Power Conditioning», Ind. Appl. IEEE Trans. On, vol. 32, n.o 6, pp. 1312 -1322, nov. 1996.[22] A. Ghosh y G. Ledwich, «Compensation of distribution system voltage using DVR», IEEE Trans. Power Deliv., vol. 17, n.o 4, pp. 1030- 1036, oct. 2002.89[23] C. J. Melhorn, T. D. Davis, y G. E. Beam, «Voltage sags: their impact on the utility and industrial customers», IEEE Trans. Ind. Appl., vol. 34, n.o 3, p. 549, 1998.[24] W. E. Brumsickle, G. A. Luckjiff, R. S. Schneider, D. M. Divan, y M. F. McGranaghan, «Dynamic sag correctors: cost effective industrial power line conditioning», en Proceedings of 34th Annual Meeting of the IEEE Industry Applications, Phoenix, AZ, USA, 1999, vol. vol.2, p. 1339.[25] B. Singh, K. Al-Haddad, y A. 9 Chandra, «A Review of Active Filters for Power Quality Improvement», Ind. Electron. IEEE Trans. On, vol. 46, n.o 5, pp. 960-971, oct. 1999.[26] C. Zhan, C. Fitzer, V. K. Ramachandaramurthy, A. Arulampalam, M. Barnes, y N. Jenkins, «Software phase-locked loop applied to dynamic voltage restorer (DVR)», en IEEE Power Engineering Society Winter Meeting, 2001, 2001, vol. 3, pp. 1033-1038 vol.3.[27] V. Kaura y V. Blasko, «Operation of a phase locked loop system under distorted utility conditions», en Applied Power Electronics Conference and Exposition, 1996. APEC ’96. Conference Proceedings 1996., Eleventh Annual, 1996, vol. 2, pp. 703–708 vol.2.[28] A. C. Parsons, W. M. Grady, y E. J. Powers, «A wavelet-based procedure for automatically determining the beginning and end of transmission system voltage sags», en IEEE Power Engineering Society 1999 Winter Meeting, 1999, vol. 2, pp. 1310–1315 vol.2.[29] D. Gregory, C. Fitzer, y M. Barnes, «The static transfer switch operational considerations», en Power Electronics, Machines and Drives, 2002. International Conference on (Conf. Publ. No. 487), 2002, pp. 620–625.[30] C. Zhan, V. K. Ramachandaramurthy, A. Arulampalam, C. Fitzer, S. Kromlidis, M. Bames, y N. Jenkins, «Dynamic voltage restorer based on voltage-space-vector PWM control», IEEE Trans. Ind. Appl., vol. 37, n.o 6, pp. 1855-1863, nov. 2001.[31] C. Fitzer, A. Arulampalam, M. Barnes, y R. Zurowski, «Mitigation of saturation in dynamic voltage restorer connection transformers», IEEE Trans. Power Electron., vol. 17, n.o 6, pp. 1058- 1066, nov. 2002.[32] S. Gao, X. Lin, Y. Kang, Y. Duan, y J. Qiu, «Mitigation of inrush current in dynamic voltage restorer injection transformers», en 2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012, pp. 4093-4098.[33] Y. W. Li, «Control and Resonance Damping of Voltage-Source and Current-Source Converters With Filters», IEEE Trans. Ind. Electron., vol. 56, n.o 5, pp. 1511-1521, may 2009.[34] H. Akagi, «Control strategy and site selection of shunt active filter for damping of harmonic propagation in power distribution systems», Present. 1996 IEEEPES Winter Meet., 1996.[35] M. El-Habrouk, M. K. Darwish, y P. Mehta, «Active Power Filters: A Review», Electr. Power Appl. IEE Proc., vol. 147, n.o 5, pp. 403 -413, sep. 2000.[36] S. Buso, L. Malesani, y P. Mattavelli, «Comparison of current control techniques for active filter applications», Ind. Electron. IEEE Trans. On, vol. 45, n.o 5, pp. 722–729, 1998.[37] W. M. Grady, M. J. Samotyj, y A. H. Noyola, «Survey of active power line conditioning metodologies», IEEE Trans. Power Deliv., vol. 5, pp. 1536-1542, 1990.[38] H. Akagi, Y. Kanazawa, y A. Nabae, «Instantaneous reactive power compensators comprising switching devices without energy storange components», IEEE Trans. Ind. Appl., vol. IA-20, pp. 625-630, 1984.[39] A. Garcia-Cerrada, P. Garcia-Gonzalez, R. Collantes, T. Gomez, y J. Anzola, «Comparison of thyristor-controlled reactors and voltage-source inverters for compensation of flicker caused by arc furnaces», IEEE Trans. Power Deliv., vol. 15, n.o 4, p. 1225, 2000.[40] P. C. Krause, Analysis of Electric Machinery. New York: McGraw-Hill Inc., 1986.[41] H. Akagi, Y. Kanazawa, y A. Nabae, «Generalised theory of the instantaneous reactive power in three-phase circuits», Proceeding 1983 Int. Power Electron. Conf. Tokyo Jpn. 1983, pp. 1375-1386, 1983.[42] G. F. Franklin, J. D. Powell, y M. L. Workman, Digital Control of Dynamic Systems, 3rd ed. Addison-Wesley, 1997.[43] K. J. Astrom y B. Wittenmark, Computer-Controlled Systems: Theory and Design, 3rd ed. Prentice Hall Inc., 1997.[44] J. Svensson, «Grid-connected voltage source converter», PhD Thesis, Chalmers university of Technology, 1998.[45] J. Svensson y R. Ottersted, «Shunt Active Filtering of Vector Current-Controlled VSC at a Moderate Swiching Frequency», IEEE Trans. Ind. Appl., vol. 35, pp. 1083-1090, 1999.[46] J. Holtz, «Pulsewith modulation for electronic power convertion», Proceeding IEEE, vol. 82, n.o 8, pp. 1194-1214, ago. 1994.[47] Mathworks, Using Matlab vesion 8.4. Natick,MA: The Mathworks, Inc, 2014.[48] Mathworks, Using Simulink vesion 8.4. Natick,MA: The Mathworks, Inc, 2014.[49] G. Goodwin, S. Graebe, y M. Salgado, Control Systems Design. London: Prentice Hall, 2001.

APA, Harvard, Vancouver, ISO, and other styles

49

"Design and Implementation of 2.5kW IBFB-LLC DC/ DC Converter Using SiC Mosfet." JST: Engineering and Technology for Sustainable Development 31.2, no. 149 (April 15, 2021): 7–14. http://dx.doi.org/10.51316/jst.149.etsd.2021.31.2.2.

Full text

Abstract:

Interleaved Boost Full Bridge integrated LLC resonant (IBFB- LLC) is an isolated DC/DC converter with directional power flow, which can cope with a wide input voltage range of PV applications. The main losses of the converter are switching losses of the power switches and transformers losses. This paper proposes a method to improve the efficiency of the IBFB converter due to zero voltage switching technique, in combination with employing new SiC MOSFET technology instead of the conventional Si MOSFET. In addition, Litz wire is also adopted to reduce the losses on the high frequency isolation transformer. Both numerical simulations and experiments with a prototype 2.5kW converter are implemented to verify the feasibility and effectiveness of the proposed solution.

APA, Harvard, Vancouver, ISO, and other styles

50

"Electrical Energy Transmission Systems at Elevated Frequency." VOLUME-8 ISSUE-10, AUGUST 2019, REGULAR ISSUE 8, no. 10 (August 10, 2019): 1240–43. http://dx.doi.org/10.35940/ijitee.g6227.0881019.

Full text

Abstract:

The article presents information about the composition of the equipment of resonant power transmission systems. The resonant systems of electrical energy transmission by single-wire cable or overhead lines at elevated frequency include frequency conversion devices, power transmission lines, and devices for the reverse transformation of electrical energy to the voltage required by the consumer. In contrast to traditional systems of electrical power transmission, resonant systems are being operated on an elevated frequency of 5-15 kHz, a power transmission line voltage is 1-10 kV. In this case resonant transformers are used. The frequency of the power transmission system is set by the resonant transmitting transformer; the receiving transformer is a wideband step-down one.The main components of the resonant transmitting transformer are a power resonant circuit and a step-up/step-down winding. The maximum output power of the converter depends on the voltage supplied to the circuit, circuit voltage, circuit capacitance, frequency, and other parameters. One can change the transmitted power by changing the transmission frequency, for example, for lighting systems.Due to the fact that resonant power transmission systems operating at elevated frequency are less demanding on the grounding quality, they are more efficient compared to single wire ground return line operating at a constant current and an alternating current of commercial frequency

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Resonant converter with Piezoelectric transformers'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles