Relevant bibliographies by topics / Isolated single-stage inverter

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Isolated single-stage inverter'

Author: Grafiati
Published: 3 September 2021
Last updated: 17 February 2022

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Journal articles on the topic "Isolated single-stage inverter"

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Ma, You Jie, Shuai Wang, and Xue Song Zhou. "The Summary of the Inverter Used in PV System." Applied Mechanics and Materials 727-728 (January 2015): 616–19. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.616.

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the inverter is one of the key technologies in PV system. It transforms the DC power output by the PV panel to AC power that the grid needs. The main technologies of the inverter are the circuit topology and the control tactic. The circuit topologies of inverter including the frequency isolated PV grid-connected inverters, the high-frequency isolated PV grid-connected inverter, the single-stage non-isolated PV grid-connect inverter and the multi-level non-isolated PV grid-connected inverter. The control tactics including the voltage oriented control (VOC), the voltage-based direct power control (V-DPC), the virtual-flux oriented control (VFOC) and the virtual-flux based direct power control (VF-DPC).
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Ji, Baojian, Feng Hong, Ang Shen, Wei Xv, and Chi Jiang. "An Isolated Single-Stage Four-Quadrant Inverter With Energy Storage Capacitor." IEEE Access 9 (2021): 79643–50. http://dx.doi.org/10.1109/access.2021.3064956.

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Tsai, M. T., C. L. Chu, C. M. Mi, J. Y. Lin, and Y. C. Hsueh. "Designing a Single-Stage Inverter for Photovoltaic System Application." Mathematical Problems in Engineering 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/912487.

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This paper focuses on a full-bridge high-frequency isolated inverter which is proposed for distributed photovoltaic power supply application. The researched system consists of a full-bridge high-frequency DC/DC converter with the proposed symmetric phase-shift modulation algorithm to achieve the ZVS switching function and a line frequency unfolding bridge. It replaces the traditional two stages of independent control algorithms with a one-stage control to obtain high conversion efficiency. A TMS 320F2812 digital signal processor-based control technique is used to achieve the desired algorithm function for the grid-connected photovoltaic power system application. The researched system can have two operating methods depending on the applied situation. Finally, a prototype of 300 W with the maximum power point function is settled to verify the proposed idea.
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Haddadi, Amir Mousa, Shahrokh Farhangi, and Frede Blaabjerg. "An Isolated Bidirectional Single-Stage Inverter Without Electrolytic Capacitor for Energy Storage Systems." IEEE Journal of Emerging and Selected Topics in Power Electronics 7, no. 3 (2019): 2070–80. http://dx.doi.org/10.1109/jestpe.2019.2897625.

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Ali, Ahmed Ismail M., Takaharu Takeshita, and Mahmoud A. Sayed. "Three-Phase PWM Inverter for Isolated Grid-Connected Renewable Energy Applications." Energies 14, no. 12 (2021): 3701. http://dx.doi.org/10.3390/en14123701.

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This paper proposes a three-phase isolated flyback inverter (IFBI) for single-stage grid-tied solar PV applications, considering a simple sinusoidal pulse-width modulation (SPWM) scheme. The proposed single-stage inverter employs a reduced passive elements count by considering three input-parallel output-differential (IPOD) flyback converter modules. Additionally, a single small size LC-input low-pass filter is utilized at the input paralleling point for ripple-free input current operation, which is essential in grid-connected renewable energy applications. In addition, a mathematical model of the IFBI is presented to confirm the existence of its low-order harmonic components. A simple PI controller-based control scheme, considering only two loops and five sensors, is used to control the proposed grid-tied IFBI. Continuous modulation scheme (CMS) combined with SPWM is used to diminish the low-frequency harmonic components. Moreover, a simple selective harmonic elimination (SHE) loop is used for second-order harmonic components (SOHC) elimination from grid-injected currents. The SHE has decreased the SOHC from 43% to 0.96%, which improves the grid current THD from 39% to 3.65%, to follow the IEEE harmonic standard limits. Additionally, the harmonic elimination technique decreases the circulating power between the inverter paralleled modules, which enhances the grid currents power factor. The proposed inverter is verified through a grid-connected 200 V, 1.6 kW, 60 Hz experimental prototype, and the switching frequency is 50 kHz. TMS-based DSP controller is used to control the grid-injected power to follow the reference power set-point.
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Zhou, Yue. "A Study of Novel Cuk Grid-Connected Inverter Based on Double-Loop Control." Advanced Materials Research 846-847 (November 2013): 543–46. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.543.

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A kind of Cuk grid-connected inverter is proposed for renewable energy power generation. The grid-connected inverter using Cuk input series output parallel circuit, form a new type of non isolated single stage output parallel input series double Cuk inverter circuit. Firstly, On the basis of the topological structure and principle, the double-loop control strategy is researched to enhance its adaptability and robustness. Simulative results show that,the proposed inverter with double-loop control has better dynamic and static performances, with less output current harmonics and better waveform quality.
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Gu, Ling, and Wei Zhu. "Single‐stage high‐frequency‐isolated three‐phase four‐leg buck–boost inverter with unbalanced load." IET Power Electronics 13, no. 1 (2020): 23–31. http://dx.doi.org/10.1049/iet-pel.2019.0436.

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Keyhani, Hamidreza, and Hamid A. Toliyat. "Single-Stage Multistring PV Inverter With an Isolated High-Frequency Link and Soft-Switching Operation." IEEE Transactions on Power Electronics 29, no. 8 (2014): 3919–29. http://dx.doi.org/10.1109/tpel.2013.2288361.

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Hadidian Moghaddam, Mohammad Jafar, Akhtar Kalam, Mohammad Reza Miveh, et al. "Improved Voltage Unbalance and Harmonics Compensation Control Strategy for an Isolated Microgrid." Energies 11, no. 10 (2018): 2688. http://dx.doi.org/10.3390/en11102688.

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This paper suggests an enhanced control scheme for a four-leg battery energy storage systems (BESS) under unbalanced and nonlinear load conditions operating in the isolated microgrid. Simplicity, tiny steady-state error, fast transient response, and low total harmonic distortion (THD) are the main advantages of the method. Firstly, a new decoupled per-phase model for the three-phase four-leg inverter is presented. It can eliminate the effect of power stage coupling on control design; thus, the three-phase four-leg power inverter can be viewed as three single input single output (SISO) control systems. Then, using an improved orthogonal signal generation method, the per-phase model of the four-leg inverter in the stationary and synchronous frame is derived. As the second step, a per-phase multi-loop control scheme for the four-leg inverter under unbalanced load conditions is suggested. The proposed control strategy has the ability to provide balanced output voltages under unbalanced load conditions by avoiding the need to deal with the symmetrical components. Finally, a multi-resonant harmonic compensator is used to actively prevent low-order harmonic currents to distort the output voltages of the three-phase four-leg grid-forming power converter. Simulations results are also presented to verify the performance of the suggested control strategy.
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Ali, Ahmed Ismail M., Mahmoud A. Sayed, and Takaharu Takeshita. "Isolated single-phase single-stage DC-AC cascaded transformer-based multilevel inverter for stand-alone and grid-tied applications." International Journal of Electrical Power & Energy Systems 125 (February 2021): 106534. http://dx.doi.org/10.1016/j.ijepes.2020.106534.

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Dissertations / Theses on the topic "Isolated single-stage inverter"

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Yaqoob, S. J., A. Obed, R. Zubo, et al. "Flyback photovoltaic micro-inverter with a low cost and simple digital-analog control scheme." MDPI, 2021. http://hdl.handle.net/10454/18583.

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Yes<br>The single-stage flyback Photovoltaic (PV) micro-inverter is considered as a simple and small in size topology but requires expensive digital microcontrollers such as Field-Programmable Gate Array (FPGA) or Digital Signal Processor (DSP) to increase the system efficiency, this would increase the cost of the overall system. To solve this problem, based on a single-stage flyback structure, this paper proposed a low cost and simple analog-digital control scheme. This control scheme is implemented using a low cost ATMega microcontroller built in the Arduino Uno board and some analog operational amplifiers. First, the single-stage flyback topology is analyzed theoretically and then the design consideration is obtained. Second, a 120 W prototype was developed in the laboratory to validate the proposed control. To prove the effectiveness of this control, we compared the cost price, overall system efficiency, and THD values of the proposed results with the results obtained by the literature. So, a low system component, single power stage, cheap control scheme, and decent efficiency are achieved by the proposed system. Finally, the experimental results present that the proposed system has a maximum efficiency of 91%, with good values of the total harmonic distortion (THD) compared to the results of other authors<br>This work was supported in-part by Innovate UK GCRF Energy Catalyst PiCREST project under Grant number 41358, in-part by British Academy GCRF COMPENSE project under Grant GCRFNGR3\1541
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Wang, Kunrong. "High-Frequency Quasi-Single-Stage (QSS) Isolated AC-DC and DC-AC Power Conversion." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/29394.

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The generic concept of quasi-single-stage (QSS) power conversion topology for ac-dc rectification and dc-ac inversion is proposed. The topology is reached by direct cascading and synchronized switching of two variety of buck or two variety of boost switching networks. The family of QSS power converters feature single-stage power processing without a dc-link low-pass filter, a unidirectional pulsating dc-link voltage, soft-switching capability with minimal extra commutation circuitry, simple PWM control, and high efficiency and reliability. A new soft-switched single-phase QSS bi-directional inverter/rectifier (charger) topology is derived based on the QSS power conversion concept. A simple active voltage clamp branch is used to clamp the otherwise high transient voltage on the current-fed ac side, and at the same time, to achieve zero-voltage-switching (ZVS) for the switches in the output side bridge. Seamless four-quadrant operation in the inverter mode, and rectifier operation with unity power factor in the charger (rectifier) mode are realized with the proposed uni-polar center-aligned PWM scheme. Single-stage power conversion, standard half-bridge connection of devices, soft-switching for all the power devices, low conduction loss, simple center-aligned PWM control, and high reliability and efficiency are among its salient features. Experimental results on a 3 kVA bi-directional inverter/rectifier prototype validate the reliable operation of the circuit. Other single-phase and three-phase QSS bi-directional inverters/rectifiers can be easily derived as topological extensions of the basic QSS bi-directional inverter/rectifier. A new QSS isolated three-phase zero-voltage/zero-current-switching (ZVZCS) buck PWM rectifier for high-power off-line applications is also proposed. It consists of a three-phase buck bridge switching under zero current and a phase-shift-controlled full-bridge with ZVZCS, while no intermediate dc-link is involved. Input power and displacement factor control, input current shaping, tight output voltage regulation, high-frequency transformer isolation, and soft-switching for all the power devices are realized in a unified single stage. Because of ZVZCS and single-stage power conversion, it can operate at high switching frequency while maintaining reliable operation and achieving higher efficiency than standard two-stage approaches. A family of isolated ZVZCS buck rectifiers are obtained by incorporating various ZVZCS schemes for full-bridge dc-dc converters into the basic QSS isolated buck rectifier topology. Experimental and simulation results substantiate the reliable operation and high efficiency of selected topologies. The concept of charge control (or instantaneous average current control) of three-phase buck PWM rectifiers is introduced. It controls precisely the average input phase currents to track the input phase voltages by sensing and integrating only the dc rail current, realizes six-step PWM, and features simple implementation, fast dynamic response, excellent noise immunity, and is easy to realize with analog circuitry or to integrate. One particular merit of the scheme is its capability to correct any duty-cycle distortion incurred on only one of the two active duty-cycles which often happens in the soft-switched buck rectifiers, another merit is the smooth transition of the input currents between the 60o sectors. Simulation and preliminary experimental results show that smooth operations and high quality sinusoidal input currents in the full line cycle are achieved with the control scheme.<br>Ph. D.
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Wen, Hao. "High-Efficiency and High-Frequency Resonant Converter Based Single-Stage Soft-Switching Isolated Inverter Design and Optimization with Gallium-Nitride (GaN)." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/105134.

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Isolated inverter can provide galvanic isolation which is necessary for some applications with safety regulations. Traditionally, a two-stage configuration is widely applied with isolated dc-dc stage and a sinusoidal pulse-width-modulated (SPWM) dc-ac stage. However, this two-stage configuration suffers from more components count, more complex control and tend to have lower efficiency and lower power density. Meanwhile, a large dc bus capacitor is needed to attenuate the double line frequency from SPWM for two-stage configuration. Therefore, the single-stage approach including an isolated dc-rectified sine stage and a line frequency unfolder is preferable. Since the unfolder circuit is at line frequency being almost lossless, the isolated dc-rectified sine stage becomes critical. However, the relevant research for the single-stage isolated inverter is limited. People either utilize PWM based converter as dc-rectified sine stage with duty cycle adjustment or apply SRC or LLC resonant converter for better soft switching characteristics. For PWM based converter, hard switching restricts the overall inverter efficiency, while for SRC/LLC, enough wide voltage gain range and full range ZVS are the major issues. This dissertation aims to provide solutions for a high-efficiency, high-frequency resonant converter based single-stage soft-switching isolated inverter design. The LLC and LCLCL resonant converters are applied as the isolated dc-rectified sine stage with variable frequency modulation (VFM). Therefore, the rectified sine wave generation consists of many dc-dc conversion with different switching frequencies and an efficient dc-rectified sine stage design needs each dc-dc conversion to be with high efficiency. This dissertation will first propose the optimization methods for LLC converter dc-dc conversion. ZVS models are derived to ensure fully ZVS performance for primary side GaN devices. As a large part in loss breakdown, the optimization for transformer is essential. The LLC converter can achieve above 99% efficiency with proposed optimization approach. Moreover, the channel turn-off energy model is presented for a more accurate loss analysis. With all the design and optimization considerations, a MHz LLC converter based isolated inverter is designed and a hybrid modulation method is proposed, which includes full bridge (FB) VFM for output high line region and half bridge (HB) VFM for output low line region. By changing from FB to HB, the output voltage gain is reduced to half to have a wider voltage gain range. However, the total harmonic distortion (THD) of output voltage at light load will be impacted since the voltage gain will be higher with lighter load at the maximum switching frequency. A MHz LCLCL converter based isolated inverter is proposed for a better output voltage THD at light load conditions. The paralleled LC inside the LCLCL resonant tank can naturally create a zero voltage gain point at their resonant frequency, which shows superior performance for rectified sine wave generation. Besides the better THD performance, the LCLCL converter based isolated inverter also features for easier control, better ZVS performance and narrower switching frequency range. Meanwhile, the LCLCL based inverter topology has bi-directional power flow capability as well. With variable frequency modulation for ac-dc, this topology is still a single-stage solution compared to the traditional two-stage solution including PFC + LLC configuration.<br>Doctor of Philosophy<br>Inverters can convert dc voltage to ac voltage and typically people use two-stage approach with isolated dc-dc stage and dc-ac stage. However, this two-stage configuration suffers from more components count, more complex control and tend to have lower efficiency and lower power density. Therefore, the single-stage solution with dc-rectified sine wave stage and a line frequency unfolder becomes appealing. The unfolder circuit is to unfold the rectifier sine wave to an ac sine wave at the output. Since the unfolder is at line frequency and can be considered lossless, the key design is for the dc-rectified sine stage. The resonant converter featured for soft switching seems to be a good candidate. However, the inverter needs soft switching for the whole range and an enough wide voltage gain, which makes the design difficult, especially the target is high efficiency for the overall inverter. This dissertation aims to provide solutions for a high-efficiency, high-frequency resonant converter based single-stage soft-switching isolated inverter design. The LLC and LCLCL resonant converters are applied as the isolated dc-rectified sine stage with variable frequency modulation (VFM). Therefore, the rectified sine wave generation consists of many dc-dc conversion with different switching frequencies and an efficient dc-rectified sine stage design needs each dc-dc conversion to be with high efficiency. The design considerations and optimization methods for the LLC dc-dc conversion are firstly investigated. Based on these approaches, a MHz LLC converter based isolated inverter is designed with proposed hybrid modulation method. To further improve the light load performance, a MHz LCLCL converter based isolated inverter topology is proposed. The paralleled LC inside the LCLCL resonant tank can naturally create a zero voltage gain point which shows superior characteristics for rectified sine wave generation. Moreover, the LCLCL resonant converter based topology has bi-directional capability as well so it can work well for ac voltage to dc voltage conversion.
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Chen, Yong-shiuan, and 陳永軒. "Design and Implementation of a Quasi-Resonant Isolated Inverse SEPIC Single-Switch Single-Stage Adapter." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/42767921012472806165.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>98<br>This thesis aims to design and implement a single-stage single-switch power factor correction circuit with 90~264V universal AC voltage input and 24V DC output for low-power adapter applications. A quasi-resonant isolated inverse SEPIC converter is used to regulate the output voltage and achieve high input power factor simultaneously by using a simple single-stage circuit topology. The power switch is turned on with valley-switching control and the output diode is turned off with naturally zero-current-switching. The switching losses can be reduced to increase the conversion efficiency. Compared with the conventional single-stage Flyback converter, the proposed circuit can effectively reduce the output voltage ripple to less than 1%. A 20W laboratory prototype is designed and implemented to verify the proposed single-stage converter.
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Book chapters on the topic "Isolated single-stage inverter"

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Lopez-Sanchez, J. M., J. D. Ballester-Berman, F. Vicente-Guijalba, et al. "Agriculture and Wetland Applications." In Polarimetric Synthetic Aperture Radar. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-56504-6_3.

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AbstractBased on experimental results, this chapter describes applications of SAR polarimetry to extract relevant information on agriculture and wetland scenarios by exploiting differences in the polarimetric signature of different scatterers, crop types and their development stage depending on their physical properties. Concerning agriculture, crop type mapping, soil moisture estimation and phenology estimation are reviewed, as they are ones with a clear benefit of full polarimetry over dual or single polarimetry. For crop type mapping, supervised or partially unsupervised classification schemes are used. Phenology estimation is treated as a classification problem as well, by regarding the different stages as different classes. Soil moisture estimation makes intensive use of scattering models, in order to separate soil and vegetation scattering and to invert for soil moisture from the isolated ground component. Then, applications of SAR polarimetry to wetland monitoring are considered that include the delineation of their extent and their characterisation by means of polarimetric decompositions. In the last section of the chapter, the use of a SAR polarimetric decomposition is shown for the assessment of the damages consequential to earthquakes and tsunamis.
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Conference papers on the topic "Isolated single-stage inverter"

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Liang-hua Zhang, Xu Yang, and Xiaofeng Yao. "An isolated single stage buck-boost inverter." In 2008 IEEE Power Electronics Specialists Conference - PESC 2008. IEEE, 2008. http://dx.doi.org/10.1109/pesc.2008.4592299.

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Umar-Lawal, Hafis Kolapo, Carl Ngai Man Ho, and Ken King Man Siu. "An Isolated Single-Stage Single-Phase Micro-Inverter Topology with Integrated Magnetic Components." In 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. http://dx.doi.org/10.1109/ecce.2019.8911897.

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Jiang, Jiahui, Zhaoqin Li, and Daolian Chen. "A Quasi Single Stage Isolated Buck-Boost Mode Multi-input Inverter." In 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia). IEEE, 2019. http://dx.doi.org/10.23919/icpe2019-ecceasia42246.2019.8796977.

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Haura, Remei, and Marcio Mendes Casaro. "Single-phase dual-stage isolated multilevel inverter applied to solar energy processing." In 2017 IEEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG). IEEE, 2017. http://dx.doi.org/10.1109/pedg.2017.7972473.

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Tan, Guang-hui, Fanpeng Zeng, Yanchao Ji, Xi Chen, and Hua Wang. "Novel Single-Stage Isolated Buck-Boost Inverter Based on Improved SPWM Control Method." In 2006 5th International Power Electronics and Motion Control Conference. IEEE, 2006. http://dx.doi.org/10.1109/ipemc.2006.297328.

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Tan, Guang-Hui, Fanpeng Zeng, Yanchao Ji, Xi Chen, and Hua Wang. "Novel Single-Stage Isolated Buck-Boost Inverter Based on Improved SPWM Control Method." In 2006 5th International Power Electronics and Motion Control Conference (IPEMC 2006). IEEE, 2006. http://dx.doi.org/10.1109/ipemc.2006.4778250.

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Bhattacharya, Arghyadip, Arup Ratan Paul, and Kishore Chatterjee. "A Single Phase Single Stage SEPIC-ĆUK Based Non-Isolated High Gain and Efficient Micro-Inverter." In 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC). IEEE, 2019. http://dx.doi.org/10.1109/pvsc40753.2019.8980872.

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Mazumder, S. K., R. K. Burra, R. Huang, and Vince Arguelles. "A low-cost single-stage isolated differential ĈCuk inverter for fuel-cell application." In 2008 IEEE Power Electronics Specialists Conference - PESC 2008. IEEE, 2008. http://dx.doi.org/10.1109/pesc.2008.4592659.

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Tayebi, S. Milad, Wei Xu, Haoming Wang, Ruiyang Yu, Zhicheng Guo, and Alex Q. Huang. "A Single-Stage Isolated Resonant SiC DC/AC Inverter for Efficient High-Power Applications." In 2020 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2020. http://dx.doi.org/10.1109/apec39645.2020.9124343.

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Frebel, Fabrice, Paul Bleus, Olivier Bomboir, and Daniel Rixhon. "Transformer-less 2 kW non isolated 400 VDC/230 VAC single stage micro inverter." In 2016 IEEE International Telecommunications Energy Conference (INTELEC). IEEE, 2016. http://dx.doi.org/10.1109/intlec.2016.7749105.

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