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Journal articles on the topic 'Zero Current Switching Mode'

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1

Kumar, Rustam, Chih-Chiang Wu, Ching-Yao Liu, Yu-Lin Hsiao, Wei-Hua Chieng, and Edward-Yi Chang. "Discontinuous Current Mode Modeling and Zero Current Switching of Flyback Converter." Energies 14, no. 18 (2021): 5996. http://dx.doi.org/10.3390/en14185996.

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The flyback converters are widely used in low power applications. The switch typically requires 600 V breakdown voltage in order to perform large step-down voltage. Thus, slight variation on the switch control can either permanently damage the switch or decrease the efficiency of the power conversion. In order to achieve higher power efficiency, the previous literature suggested operating the flyback converter in the discontinuous current mode (DCM). It is then required to understand the critical conditions of the DCM through analyzing the dynamic behavior and discontinuous current mechanism.
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2

Im, S. W., G. H. Cho, and W. H. Kwon. "Sliding mode control of a zero-current switching resonant convertor." Electronics Letters 30, no. 5 (1994): 381–82. http://dx.doi.org/10.1049/el:19940296.

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3

Calderon, Carlos, Andres Barrado, Alba Rodriguez, et al. "General Analysis of Switching Modes in a Dual Active Bridge with Triple Phase Shift Modulation." Energies 11, no. 9 (2018): 2419. http://dx.doi.org/10.3390/en11092419.

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This paper provides an exhaustive analysis of the Dual-Active-Bridge with Triple-Phase-Shift (DAB-TPS) modulation and other simpler ones, identifying all the possible switching modes to operate the DAB in both power flow directions, and for any input-to-output voltage range and output power. This study shows four cases and seven switching modes for each case when the energy flows in one direction. That means that the DAB operates up to fifty-six different switching modes when the energy flows in both directions. Analytical expressions for the inductor current, the output power, and the boundar
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4

HUA, GUICHAO, and FRED C. LEE. "SOFT-SWITCHING PWM CONVERTER TECHNOLOGIES." Journal of Circuits, Systems and Computers 05, no. 04 (1995): 531–58. http://dx.doi.org/10.1142/s0218126695000333.

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The switched-mode power conversion technologies have evolved from the basic PWM converters to resonant converters, quasi-resonant converters, multi-resonant converters, and most recently, to soft-switching PWM converters. In this paper, several typical resonant techniques and several soft-switching PWM techniques are reviewed, and their merits and limitations are assessed. The resonant techniques reviewed include the quasi-resonant converters, multi-resonant converters, Class-E converters, and resonant dc link converters; and the soft-switching PWM techniques reviewed include the zero-voltage-
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5

Lili, Qu, Zhang Bo, and Wallace K. S. Tang. "Sneaking Operation Modes in Zero-Current-Switching Converter." Open Electrical & Electronic Engineering Journal 9, no. 1 (2015): 127–34. http://dx.doi.org/10.2174/1874129001509010127.

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This paper reports the occurrence of some abnormal operational modes in soft-switching converters. By constructing a Boolean matrix based on the states of the switching components, some unexpected topological states are identified. Consequently, these states excite the abnormal or sneaking operational modes as referred. A three-stage step-up zero- current switching converter is used as an illustrative example and detailed analysis has been carried out. The phenomenon has also been confirmed in experiences, where performance degradation is noticed.
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6

Xu, Jianming, Bo Qian, and Muhammad Humayun. "A Novel Single-Stage Tandem Soft-Switching Converter with Low Input Current Distortion." Inventions 3, no. 4 (2018): 70. http://dx.doi.org/10.3390/inventions3040070.

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In order to improve the power factor and reduce the input current harmonics, power factor correction (PFC) converters are utilized. This paper introduces a single-stage continuous conduction mode (CCM) soft-switched power factor correction (PFC) converter with a tandem topology. The proposed topology has two operating modes, namely resonant operation mode and boost operation mode. Such a design and control realizes the zero-voltage switching (ZVS) and zero current switching (ZCS) of the power switches. The proposed topology has been introduced to reduce the total harmonic distortion (THD) of t
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7

Iqbal, Atif, Shaikh Moinoddine, and Khaliqur Rahman. "Finite State Predictive Current and Common Mode Voltage Control of a Seven-phase Voltage Source Inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 3 (2015): 459. http://dx.doi.org/10.11591/ijpeds.v6.i3.pp459-476.

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<p class="abstract">The paper elaborate finite set model based predictive current control of a seven-phase voltage source inverter. The current control is carried out considering a finite set of control actions. The space vector model of a seven-phase voltage source inverter (VSI) yields 2<sup>7</sup> = 128 space voltage vectors, with 126 active and two zero vectors. The control method described in this paper discard some switching states from the whole set and employs reduced number of switching states to track the commanded current. Three sets of space vectors are used for
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8

Chebabhi, Ali, Mohammed-Karim Fellah, Mohamed-Fouad Benkhoris, and Abdelhalim Kessal. "Sliding mode controller for four leg shunt active power filter to eliminating zero sequence current, compensating harmonics and reactive power with fixed switching frequency." Serbian Journal of Electrical Engineering 12, no. 2 (2015): 205–18. http://dx.doi.org/10.2298/sjee1502205c.

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In this paper, the four leg inverter controlled by the three dimensional space vector modulation (3D SVM) is used as the shunt active power filter (SAPF) for compensating the three phase four wire electrical network, by using the four leg inverter with 3D SVM advantages to eliminated zero sequence current, fixed switching frequency of inverter switches, and reduced switching losses. This four leg inverter is employed as shunt active power filter to minimizing harmonic currents, reducing magnitude of neutral wire current, eliminating zero sequence current caused by nonlinear single phase loads
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9

Wang, Dao Shun, and Qiang Zou. "Capacitor Group Zero-Crossing Switching Control System Design." Advanced Materials Research 748 (August 2013): 506–9. http://dx.doi.org/10.4028/www.scientific.net/amr.748.506.

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Nowadays, the most of the load is inductive load in the factory. However, power factor is reduced by the phase difference of voltage waveform and current waveform which made by inductor. So many company adopt the compensation mode of parallel capacitor. However, randomly switch for capacitor group make the great harm to power supply system. In order to solve this problem, this paper designs a kind of intelligent synchronous switch. This switch can be switched in the alternating current zero. This switch takes PIC16F877A as core, using of magnetic keeping relay as the executing agency. The expe
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10

Yang and Liao. "Discrete Sliding Mode Control Strategy for Start-Up and Steady-State of Boost Converter." Energies 12, no. 15 (2019): 2990. http://dx.doi.org/10.3390/en12152990.

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Since the zero initial conditions of the boost converter are far from the target equilibrium point, the overshoot of the input current and the output voltage will cause energy loss during the start-up process when the converter adopts the commonly used small-signal model design control method. This paper presents a sliding mode control strategy that combines two switching surfaces. One switching surface based on the large-signal model is employed for the start-up to minimize inrush current and voltage overshoot. The stability of this strategy is verified by Lyapunov theory and simulation. Once
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11

Zhang, Bin, Teng Wei Yu, and Yao Li. "30kW IPMSM Phase Current Sliding Mode Observer Control." Applied Mechanics and Materials 278-280 (January 2013): 1533–36. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.1533.

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A 30kW interpolation permanent magnet synchronous motor(IPMSM) for electric vehicles is discussed in this paper, the phase current sliding mode observer control strategy is proposed, by means of adjusting the current error between the target and practical phase current of the motor, and according which the designed current sliding mode observer output voltage. An improved index reaching law control method is shown, the switching gain can always maintain smaller and converges to zero when imported time-varying factors to it. The inherent shortcomings of the index reaching law can be overcome by
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12

Di, Zhengfei, Demin Xu, and Kehan Zhang. "Vector Modulation-Based Model Predictive Current Control with Filter Resonance Suppression and Zero-Current Switching Sequence for Two-Stage Matrix Converter." Energies 14, no. 12 (2021): 3685. http://dx.doi.org/10.3390/en14123685.

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This paper proposes a novel model predictive current control scheme for two-stage matrix converter. The switching frequency is kept constant by fixing the switching instant. The control strategy achieves to control source reactive power in the input side and output currents in the output side. In addition, the advantage of the proposed strategy compared with conventional model predictive control is firstly proved using the principle of vector synthesis and the law of sines in the vector distribution area. Moreover, a zero-current switching sequence is proposed and implemented to insure zero-cu
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13

Chang, Yong-Nong, Hung-Liang Cheng, Hau-Chen Yen, Chien-Hsuan Chang, and Wei-Di Huang. "An Interleaved DC/DC Converter with Soft-switching Characteristic and high Step-up Ratio." Applied Sciences 10, no. 6 (2020): 2167. http://dx.doi.org/10.3390/app10062167.

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This study presents a dc/dc converter featuring soft-switching characteristic, high conversion efficiency, and high step-up ratio. The proposed circuit is composed of two parallel-connected boost converters. Only one coupled inductor is used to replace inductors of the boost converters which are interleaved operated at discontinuous-conduction mode (DCM). The current ripples at the input and the output terminals are reduced due to the interleaved operation. By freewheeling the current of the coupled inductor to discharge the stored electric charges in the parasitic capacitors of the active swi
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14

Waradzyn, Zbigniew, Robert Stala, Andrzej Mondzik, Aleksander Skała, and Adam Penczek. "GaN-Based DC-DC Resonant Boost Converter with Very High Efficiency and Voltage Gain Control." Energies 13, no. 23 (2020): 6403. http://dx.doi.org/10.3390/en13236403.

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This paper presents a concept for the operation of a resonant DC–DC switched-capacitor converter with very high efficiency and output voltage regulation. In its basic concept, such a converter operates as a switched-capacitor voltage doubler (SCVD) in the Zero Current Switching (ZCS) mode with a constant output voltage. The proposed methods of switching allow for the switched-capacitor (SC) converter output voltage regulation, and improve its efficiency by the operation with Zero Voltage Switching (ZVS). In this paper, various switching patterns are proposed to achieve high efficiency and the
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15

S, Sathiyamoorthy, and Gopinath M. "A Novel High Gain SEPIC Converter with the Tapped Inductor Model Operating in Discontinuous Conduction Mode for Power Factor Correction." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 2 (2016): 450. http://dx.doi.org/10.11591/ijpeds.v7.i2.pp450-459.

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Power Factor Correction (PFC) has become one of the most active research areas in the field of power electronics due to the surplus power required for various industrial applications around the world. In this work, a novel SEPIC converter with the Tapped Inductor model operating in Discontinuous Conduction Mode (TI-SEPIC- DCM) is proposed for PFC. The proposed TI-SEPIC-DCM improves the voltage gain through voltage multiplier cell and charge pump circuit. The voltage multiplier cell also helps in attaining the Zero-Voltage Switching (ZVS) and Zero-Current Switching (ZCS), which results in highe
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16

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

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A digital control scheme for GaN transistor-based totem pole power factor correction (PFC) is proposed in this paper. At the zero crossing, the totem pole PFC has a discontinuous conduction mode (DCM) current section because of its driving method and circuit structure. In the DCM current section, when a typical synchronous switching technique is applied, the inductor current is reduced to less than zero, thereby reducing efficiency. Moreover, because of the nature of the circuit, power may be transferred in reverse. To prevent this, a new synchronous switch technique using the cycle by cycle (
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17

Mertens, A., H. C. Skudelny, P. P. A. Caldeira, and T. Lipo. "Characterization of GTOs under different modes of zero current switching." IEEE Transactions on Power Electronics 9, no. 3 (1994): 338–45. http://dx.doi.org/10.1109/63.311267.

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18

Bangarraju, J., V. Rajagopal, V. Sharada, and K. Lakshmaiah. "Peak Detection Control Strategy based STATCOM for Suppression of Power Quality Problems." E3S Web of Conferences 87 (2019): 01027. http://dx.doi.org/10.1051/e3sconf/20198701027.

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This paper explains about control of VSC using uni-polar switching based Static Compensator (STATCOM) using Peak Detection Control Strategy for elimination of PQ Problems. The proposed STATCOM are operated in PFC (Power Factor Correction) mode and ZVR (Zero Voltage Regulation) mode. Under these operation modes of STATCOM is able to suppression of harmonics, PFC at source, reactive power compensation, load balancing and compensation of neutral current. A non-isolated star/three individual single- phase transformers are connected at PCC (Point of Common Coupling) to mitigate neutral current. The
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19

LEUNG, FRANK HUNG-FAT, LIK-KIN WONG, and PETER KWONG-SHUN TAM. "A SIMPLE LARGE-SIGNAL NONLINEAR MODEL FOR ZERO-CURRENT-SWITCH QUASI-RESONANT BUCK CONVERTERS." Journal of Circuits, Systems and Computers 06, no. 06 (1996): 593–98. http://dx.doi.org/10.1142/s0218126696000406.

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A large-signal nonlinear model for zero-current-switch quasi-resonant buck converters is presented. The derivation is simple and the results are accurate even for large-signal operation. Such a model can be used for the analysis and simulation of the switching converter, no matter in open-loop or in closed-loop, with fast speed. The condition for zero-current switching can also be identified from this model.
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20

Jalilzadeh, Tohid, Mehrdad Tarafdar Hagh, and Mehran Sabahi. "Analytical study and simulation of a transformer-less photovoltaic grid-connected inverter with a delta-type tri-direction clamping cell for leakage current elimination." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 2 (2018): 814–31. http://dx.doi.org/10.1108/compel-03-2017-0114.

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PurposeThis paper aims to propose a new transformer-less inverter structure to reduce the common-mode leakage current in grid-connected photovoltaic (PV) systems. Design/methodology/approachThe proposed circuit structure is the same as the conventional full-bridge inverter with three additional power switches in a triangular structure. These three power switches are between the bridge and the output filter, and they mitigate the common-mode leakage current flowing toward the PV panels’ capacitors. The common-mode leakage current mitigation is done through the three-direction clamping cell (TDC
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21

Zheng, Jian, Mingcheng Lyu, Shengqing Li, Qiwu Luo, and Keyuan Huang. "Common-Mode Reduction SVPWM for Three-Phase Motor Fed by Two-Level Voltage Source Inverter." Energies 13, no. 15 (2020): 3884. http://dx.doi.org/10.3390/en13153884.

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Aiming at the problem of large magnitude and high frequency of common-mode voltage (CMV) when space vector pulse width modulation (SVPWM) is used in a three-phase motor fed by a two-level voltage source inverter, a common-mode reduction SVPWM (CMRSVPWM) is studied. In this method, six new sectors are obtained by rotating six sectors of conventional SVPWM by 30°. In odd-numbered sectors, only three non-zero vectors with odd subscripts are used for synthesis, while in even-numbered sectors, only three non-zero vectors with even subscripts are used for synthesis. The actuation durations of three
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22

AKATSU, SATOSHI, HIROYUKI TORIKAI, and TOSHIMICHI SAITO. "ZERO-CROSS INSTANTANEOUS STATE SETTING FOR CONTROL OF A BIFURCATING H-BRIDGE INVERTER." International Journal of Bifurcation and Chaos 17, no. 10 (2007): 3571–75. http://dx.doi.org/10.1142/s021812740701938x.

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This paper studies stabilization of low-period unstable periodic orbits (UPOs) in a simplified model of a current mode H-bridge inverter. The switching of the inverter is controlled by pulse-width modulation signal depending on the sampled inductor current. The inverter can exhibit rich nonlinear phenomena including period doubling bifurcation and chaos. Our control method is realized by instantaneous opening of inductor at a zero-crossing moment of an objective UPO and can stabilize the UPO instantaneously as far as the UPO crosses zero in principle. Typical system operations can be confirmed
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23

Li, Guangyao, and Dong-Hee Kim. "A Wireless Power Transfer Charger with Hybrid Compensation Topology for Constant Current/Voltage Onboard Charging." Applied Sciences 11, no. 16 (2021): 7569. http://dx.doi.org/10.3390/app11167569.

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Compared with plugged-in chargers, wireless power transfer (WPT) systems for battery chargers have numerous advantages, e.g., safety, efficiency, and convenience. To satisfy the important wireless charging requirements of efficiency and safety of the battery, this paper proposes a constant current/voltage (CC/CV) charging compensation topology with near-communication based on receiving-side hybrid topology switching, which is unaffected by the dynamic loads. The proposed hybrid topology is systematically analyzed by using the M-mode, and the system parameters are designed to satisfy the constr
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24

Cheng, Chang, Cheng, Chang, Chung, and Chang. "A Single-Stage LED Streetlight Driver with Soft-Switching and Interleaved PFC Features." Electronics 8, no. 8 (2019): 911. http://dx.doi.org/10.3390/electronics8080911.

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This paper presents a single-stage driver with soft-switching and interleaved power-factor correction (PFC) features suitable for light-emitting diode (LED) energy-saving streetlight applications. The proposed LED streetlight driver integrates an interleaved buck-boost PFC converter with coupled inductors and a half-bridge LLC resonant converter into a single-stage power-conversion circuit with reduced voltage stress on the DC-linked capacitor and power switches, and it is suitable for operating at high utility-line voltages. Furthermore, coupled inductors in the interleaved buck-boost PFC con
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25

Tan, Adrian S. T., and S. Iqbal. "Implementation of INC MPPT and CV Charging Using LLC Resonant Converter for Solar Streetlight System." Journal of Circuits, Systems and Computers 27, no. 03 (2017): 1850043. http://dx.doi.org/10.1142/s0218126618500433.

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Most existing stand-alone photovoltaic (PV) power systems employ pulse-width-modulated (PWM) DC–DC converters for maximum power point tracking (MPPT) and battery charging control. However, PWM converters experience high switching loss and high electromagnetic interference when operating at high frequency. Therefore, this paper presents an incremental conductance (INC)-based MPPT with constant voltage (CV) charging using LLC resonant converter for stand-alone solar streetlight system. INC MPPT maximizes the PV power generation while CV charging ensures good battery charging characteristics. Bot
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26

Chuang, Ching-Chun, Chih-Chiang Hua, Chong-Yu Huang, and Li-Kai Jhou. "Modeling a Dual-Mode Controller Design for a Quasi-Resonant Flyback Converter." Applied Sciences 9, no. 9 (2019): 1860. http://dx.doi.org/10.3390/app9091860.

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The proposed system can overcome the disadvantage of a high peak current in quasi-resonant fly-back (QRF) converters when operated under heavy load conditions. The operating mode and control scheme of a QRF converter with dual-mode control were established and analyzed. The dual-mode control scheme not only enabled a valley-switching detection technique that satisfied the zero-voltage switching condition but also provided a constant frequency mechanism to reduce the conduction loss in QRF converters when operated in a continuous conduction mode and under heavy load conditions. The small-signal
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27

Jung, Y. S., and S. J. Kwon. "Accuracy improvement of low-frequency small signal model of current mode controlled zero voltage switching half-bridge PWM converter." IEE Proceedings - Electric Power Applications 150, no. 6 (2003): 689. http://dx.doi.org/10.1049/ip-epa:20030668.

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28

Rogina, María R., Alberto Rodríguez, Aitor Vázquez, Diego G. Lamar, and Marta M. Hernando. "Event-Focused Digital Control to Keep High Efficiency in a Wide Power Range in a SiC-Based Synchronous DC/DC Boost Converter." Electronics 9, no. 12 (2020): 2154. http://dx.doi.org/10.3390/electronics9122154.

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This paper is focused on the design of a control approach, based on the detection of events and changing between two different conduction modes, to reach high efficiency over the entire power range, especially at medium and low power levels. Although the proposed control strategy can be generalized for different topologies and specifications, in this paper, the strategy is validated in a SiC-based synchronous boost DC/DC converter rated for 400 V to 800 V and 10 kW. Evaluation of the power losses and current waveforms of the converter for different conduction modes and loads predicts suitable
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29

Phan, Nhat-Truong, Anh-Dung Nguyen, Yu-Chen Liu, and Huang-Jen Chiu. "An Investigation of Zero-Voltage-Switching Condition in a High-Voltage-Gain Bidirectional DC–DC Converter." Electronics 10, no. 16 (2021): 1940. http://dx.doi.org/10.3390/electronics10161940.

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This paper analyzes the zero-voltage switching (ZVS) for all switches in a high-voltage-gain bidirectional DC–DC converter in triangular conduction mode (TCM) operation without any auxiliary components. From the ZVS condition, the reverse inductor current can be derived, and the required dead-time duration between the main switches and SR switches can be determined, which leads to a reduction in the duty cycle loss. Moreover, the relationship between switching frequency and load in TCM operation can be determined, which helps to reduce the peak-to-peak inductor current and reduce the conductio
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30

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

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In this proposed system, two zero crossing detectors are used for detecting zero crossing of voltage and current. The project is meant to attenuate penalty for industrial units using automatic power factor correction unit. The microcontroller utilized during this project belongs to 8051 family. The interruption between the zero-voltage pulse and zero-current pulse is duly generated by suitable operational amplifier circuits in comparator mode is fed to 2 interrupt pins of a microcontroller. The program takes over to actuate appropriate number of relays from its output to bring shunt capacitors
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31

Wu, Dong Chun, and Song Ya Tian. "Design of Main Parameters for the Main Circuit of Soft-Witching Inverter." Advanced Materials Research 354-355 (October 2011): 1376–80. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.1376.

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To meet the demand of that the waveform control welding machine controlling the waveform of the arc voltage and arc current, need to further improve the working frequency of the inverter power source and reduce switching loss, switching stress and electromagnetic interference. The parameters of soft-switching inverter’s main circuit, witch make the working state with zero-voltage and zero-current switching, is designed. First, the working principle of the FB-ZVZCS-PWM inverter is analyzed. And the constraint equation of the main circuit’s parameters is obtained, it provide the basis for the ca
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32

Lopez, V. M., A. Navarro-Crespin, R. Schnell, Christian Branas, F. J. Azcondo, and R. Zane. "Current Phase Surveillance in Resonant Converters for Electric Discharge Applications to Assure Operation in Zero-Voltage-Switching Mode." IEEE Transactions on Power Electronics 27, no. 6 (2012): 2925–35. http://dx.doi.org/10.1109/tpel.2011.2174384.

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33

Zhang, Yan Zhi, and Ping Wang. "Study of Dual-Active Series Resonant DC-DC Converter for High Power Applications." Advanced Materials Research 748 (August 2013): 502–5. http://dx.doi.org/10.4028/www.scientific.net/amr.748.502.

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This paper investigates a high power dual-active isolated DC-DC converter employing LC series resonant technology. The switches of the circuit may work in either zero-voltage-switching (ZVS) or zero-current-switching (ZCS) which greatly reduces the switching power losses and raises the transmission efficiency. The dynamic performance of the circuit and the formula of the output power which no paper has given the exact expression can get by building the DC model of the converter. Finally, simulation and experiment have been conducted to verify the correctness of the analysis.
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34

Shi. "Wide Load Range Capacitor Clamped ZVZCS Half Bridge Three-level DC-DC Converter with Two Unsymmetrical Bi-directional Switches." Energies 12, no. 12 (2019): 2362. http://dx.doi.org/10.3390/en12122362.

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This paper presents a zero-voltage and zero-current switching (ZVZCS) capacitor-clamped half bridge (HB) three-level dc-dc converter (TLDC), which is well fit for high input voltage dc-dc industrial applications. The maximum voltage stress of the primary switches is limited by the flying capacitor and input capacitors, which is very close to Vin/2. Two unsymmetrical bidirectional switches are used to replace two of the primary switches in a conventional capacitor-clamped HB TLDC, which ensure ZVZCS of the main switches in wide load range. The reverse direction MOSFETs in the unsymmetrical bidi
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35

Zhao, Peng Shu, Xu Dong Wang, Xiao Song Na, and Miao Sen Yang. "Realization of a Novel Soft-Switch of Inverting Spot Welding Power Supply." Advanced Materials Research 546-547 (July 2012): 344–51. http://dx.doi.org/10.4028/www.scientific.net/amr.546-547.344.

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The technology of soft-switching can improve stability ,reliability and efficiency of the inverting spot welding power supply .In this paper ,a new kind of topology of zero-voltage switching spot welding power supply is proposed ,which is auxiliary circuit in paralleling with the lagging lag ,so it can afford auxiliary current of soft switch .With the relationship between circuit state of every working mode of main circuit and main circuit parameters in new topology ,the ability of searching optimal overall situation of ACA is used to optimize circuit parameters ,and it turns out to confirm th
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36

Di, Zhengfei, Demin Xu, Luca Tarisciotti, and Pat Wheeler. "A Novel Predictive Control Method with Optimal Switching Sequence and Filter Resonance Suppression for Two-Stage Matrix Converter." Energies 14, no. 12 (2021): 3652. http://dx.doi.org/10.3390/en14123652.

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This paper proposes a vector modulation-based model predictive current control strategy for a two-stage matrix converter. The switching frequency is kept constant by fixing the switching instantly. The control scheme controls the source reactive power on the input side and output currents on the output side. Besides, the advantage of the proposed strategy compared with conventional model predictive control is firstly proved using the principle of vector synthesis and the law of sines in the vector distribution area. Moreover, to ensure zero-current switching operations and reduce the switching
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37

Kang, Longyun, Jianbin Zhang, Hailan Zhou, Zixian Zhao, and Xinwei Duan. "Model Predictive Current Control with Fixed Switching Frequency and Dead-Time Compensation for Single-Phase PWM Rectifier." Electronics 10, no. 4 (2021): 426. http://dx.doi.org/10.3390/electronics10040426.

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The research object of this paper is single-phase PWM rectifier, the purpose is to reduce the total harmonic distortion (THD) of the grid-side current. A model predictive current control (MPCC) with fixed switching frequency and dead-time compensation is proposed. First, a combination of an effective vector and two zero vectors is used to fix the switching frequency, and a current prediction equation based on the effective vector’s optimal action time is derived. The optimal action time is resolved from the cost function. Furthermore, in order to perfect the established prediction model and su
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38

Dhanasekaran, P. M., R. Balamurugan, P. Veena, and R. Nithya. "New Single Phase Bridgeless CUK Converter Topology for Power Factor Enhancement Based on Fuzzy Logic Control." Journal of Circuits, Systems and Computers 24, no. 07 (2015): 1550102. http://dx.doi.org/10.1142/s0218126615501029.

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A new single phase bridgeless power factor correction (PFC) converter derived from CUK topology is proposed. In this new CUK converter, the absence of the front end diode bridge results in the less switching and conduction losses compared to the conventional PFC converter. The current flow in the proposed converter configuration has only two semiconductor switches and it results in less conduction loss during each interval of the switching cycle. It offers less input current ripple, less electromagnetic interference (EMI) and also protection against the starting inrush current. It is mostly pr
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39

Huo, Zhi Cheng, Guang Xu Ren, Jia Ying Gao, and Guo Bao Ding. "Design of Inverter Based on the Soft-Switched of High Frequency Pulse DC Loop." Advanced Materials Research 834-836 (October 2013): 1114–17. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1114.

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Design a DC/AC converter based on simplex single voltage source high frequency pulse DC loop technology, the output is 115V400Hz, 0.9KVA and the input is three phase alternating current. The forward part is DC/DC converter which provides pulse D.C. to the back part DC/AC converter. Implement soft-switch by changing the on-off state of switching tubes on the inversion arm path at the zero-voltage instant of the pulse direct current, no need of the auxiliary resonant net. The system takes three-state DPM current hysteresis control mode, gets good performance on output wave and efficiency.
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40

Yau, Yeu-Torng, Kuo-Ing Hwu, and Yu-Kun Tai. "Active Clamp Boost Converter with Blanking Time Tuning Considered." Applied Sciences 11, no. 2 (2021): 860. http://dx.doi.org/10.3390/app11020860.

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An active clamp boost converter with blanking time auto-tuned is presented herein, and this is implemented by an additional auxiliary switch, an additional resonant inductor, and an additional active clamp capacitor as compared with the conventional boost converter. In this structure, both the main and auxiliary switches have zero voltage switching (ZVS) turn-on as well as the output diode has zero current switching (ZCS) turn-off, causing the overall efficiency of the converter to be upgraded. Moreover, as the active clamp circuit is adopted, the voltage spike on the main switch can be suppre
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Choi, Won Suk, Sung Mo Young, Richard L. Woodin, A. W. Witt, and J. Shovlin. "A High Performance CCM PFC Circuit Using a SiC Schottky Diode and a Si SuperFETTM Switch." Materials Science Forum 600-603 (September 2008): 1235–38. http://dx.doi.org/10.4028/www.scientific.net/msf.600-603.1235.

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SuperFETTM MOSFETs and silicon carbide (SiC) Schottky diodes are applied to continuous conduction mode active power factor correction pre-regulators. SuperFETTM MOSFETs can reduce power losses dramatically with their extremely low RDS(ON) and fast switching. The SiC Schottky diode has virtually zero reverse recovery current and high thermal conductivity, and is close to an ideal diode for a CCM PFC circuit. Due to these outstanding switching characteristics, frequency can be increased. In this paper, the SiC Schottky diode’s and SuperFETTM MOSFET’s performance have been verified in a CCM PFC b
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42

SILVA, J. FERNANDO. "SLIDING MODE DESIGN OF CONTROL AND MODULATOR ELECTRONICS FOR POWER CONVERTERS." Journal of Circuits, Systems and Computers 05, no. 03 (1995): 355–71. http://dx.doi.org/10.1142/s0218126695000229.

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This paper presents state-of-the-art application of Sliding Mode Control theory, to improve the performance and to integrate the modulator and control electronics design of power converters. This approach eliminates conventional PWM modulators and loop linear PI regulators, reducing the converter complexity, weight and volume, which increases its power density figure. Sliding Mode Control techniques are used to obtain, from the controllability canonical system model, the control law, a linear combination of state variable errors and its derivatives, whose implementation is a simple circuit, th
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Tu'ma, Dena Hameed, and Ahmed Khalaf Hamoudi. "Performance of 2- Link Robot by utilizing Adaptive Sliding Mode Controller." Journal of Engineering 26, no. 12 (2020): 44–65. http://dx.doi.org/10.31026/j.eng.2020.12.03.

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The Sliding Mode Control (SMC) has been among powerful control techniques increasingly. Much attention is paid to both theoretical and practical aspects of disciplines due to their distinctive characteristics such as insensitivity to bounded matched uncertainties, reduction of the order of sliding equations of motion, decoupling mechanical systems design. In the current study, two-link robot performance in the Classical SMC is enhanced via Adaptive Sliding Mode Controller (ASMC) despite uncertainty, external disturbance, and coulomb friction. The key idea is abstracted as follows: switching ga
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Li, Po, Di Bin Huang, and Yi Ru Zhang. "A Model Predictive Control Method for Bidirectional DC-DC Converter in the ZVS Condition." Applied Mechanics and Materials 548-549 (April 2014): 829–33. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.829.

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The bidirectional DC-DC converter can achieve energy storage and transfer by adjusting the magnitude and direction of the current, which is widely used in the DC interconnect micro-grid system and battery energy management system. In the current tracking control of the bidirectional DC-DC converter, the switching loss can be significantly reduced under the Zero Voltage Switching (ZVS) condition. In this situation, the paper firstly establishes the model of switching progress. Considering the ZVS constraints, the model can be described as piecewise linear equations. Secondly, based on the piece
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Sayed, Khairy, Mohammed G. Gronfula, and Hamdy A. Ziedan. "Novel Soft-Switching Integrated Boost DC-DC Converter for PV Power System." Energies 13, no. 3 (2020): 749. http://dx.doi.org/10.3390/en13030749.

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This paper presents a novel soft-switching boost DC-DC converter, which uses an edge-resonant switch capacitor based on the pulse width modulation PWM technique. These converters have high gain voltage due to coupled inductors, which work as a transformer, while the boost converter works as a resonant inductor. Upon turning on, the studied soft switching circuit works at zero-current soft switching (ZCS), and upon turning off, it works at zero-voltage soft switching (ZVS) while using active semiconductor switches. High efficiency and low losses are obtained while using soft switching and auxil
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Ravi, Deepak, Bandi Mallikarjuna Reddy, Shimi S.L, and Paulson Samuel. "Bidirectional dc to dc Converters: An Overview of Various Topologies, Switching Schemes and Control Techniques." International Journal of Engineering & Technology 7, no. 4.5 (2018): 360. http://dx.doi.org/10.14419/ijet.v7i4.5.20107.

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Bidirectional dc to dc converter is used as a key device for interfacing the storage devices between source and load in renewable energy system for continuous flow of power because the output of the renewable energy system fluctuates due to change in weather conditions. In electric vehicles also, bidirectional converter is used between energy source and motor for power supply from battery to motor. Thus, bidirectional dc to dc converters are getting more and more attention in academic research and in industrial applications. Bidirectional dc to dc converters work in both buck and boost mode an
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Bakar, A. A., A. Ponniran, and T. Taufik. "Simulation and Analysis of Multiphase Boost Converter with Soft-Switching for Renewable Energy Application." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 4 (2017): 1894. http://dx.doi.org/10.11591/ijpeds.v8.i4.pp1894-1902.

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<span>This paper presents the simulation design of dc/dc interleaved boost converter with zero-voltage switching (ZVS). By employin the interleaved structure, the input current stresses to switching devices were reduced and this signified to a switching conduction loss reduction. All the parameters had been calculated theoretically. The proposed converter circuit was simulated by using MATLAB/Simulink and PSpice software programmes. The converter circuit model, with specifications of output power of 200 W, input voltage range from 10~60 V, and operates at 100 kHz switching frequency was
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48

Cho, Min-Gi, Sang-Hoon Lee, Hyeon-Seok Lee, Yoon-Geol Choi, and Bongkoo Kang. "Circuit Structure and Control Method to Reduce Size and Harmonic Distortion of Interleaved Dual Buck Inverter." Energies 13, no. 6 (2020): 1531. http://dx.doi.org/10.3390/en13061531.

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A new circuit structure and control method for a high power interleaved dual-buck inverter are proposed. The proposed inverter consists of six switches, four diodes and two inductors, uses a dual-buck structure to eliminate zero-cross distortion, and operates in an interleaved mode to reduce the current stress of switch. To reduce the total harmonic distortion at low output power, the inverter is controlled using discontinuous-current-mode control combined with continuous-current-mode control. The experimental inverter had a power-conversion efficiency of 98.5% at output power = 1300 W and 98.
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49

Cheng, Xu-Feng, Yong Zhang, and Chengliang Yin. "A ZVS Bidirectional Inverting Buck-Boost Converter Using Coupled Inductors." Electronics 7, no. 10 (2018): 221. http://dx.doi.org/10.3390/electronics7100221.

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The bidirectional inverting buck-boost converter (BIBBC) has a simple structure and a wide voltage ratio. It can be used in the battery supercapacitor hybrid energy storage system (BSHESS) and the motor drive system. However, the traditional continuous conduction mode (CCM) BIBBC will have severe switching loss. The triangular current mode (TCM) BIBBC can reduce the switching loss, but it will increase core loss and filter capacitance. To solve these problems, this paper proposes a new zero voltage switching (ZVS) BIBBC using a coupled inductor. This ZVS BIBBC will provide ZVS conditions for b
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50

Do, Duc-Tri, Minh-Khai Nguyen, Van-Thuyen Ngo, Thanh-Hai Quach, and Vinh-Thanh Tran. "Common Mode Voltage Elimination for Quasi-Switch Boost T-Type Inverter Based on SVM Technique." Electronics 9, no. 1 (2020): 76. http://dx.doi.org/10.3390/electronics9010076.

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In this paper, the effect of common-mode voltage generated in the three-level quasi-switched boost T-type inverter is minimized by applying the proposed space-vector modulation technique, which uses only medium vectors and zero vector to synthesize the reference vector. The switching sequence is selected smoothly for inserting the shoot-through state for the inverter branch. The shoot-through vector is added within the zero vector in order to not affect the active vectors as well as the output voltage. In addition, the shoot-through control signal of active switches of the impedance network is
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