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Journal articles on the topic 'Class-E inverter'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Ashique, Ratil H., Md Hasan Maruf, Kazi Md Shahnawaz Habib Sourov, Md Mahadul Islam, Aminul Islam, Mamun Rabbani, Md Rasidul Islam, Mohammad Monirujjaman Khan, and ASM Shihavuddin. "A Comparative Performance Analysis of Zero Voltage Switching Class E and Selected Enhanced Class E Inverters." Electronics 10, no. 18 (September 10, 2021): 2226. http://dx.doi.org/10.3390/electronics10182226.

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This paper presents a comparative analysis of the class E and selected enhanced class E inverters, namely, the second and third harmonic group of class EFn, E/Fn and the class E Flat Top inverter. The inverters are designed under identical specifications and evaluated against the variation of switching frequency (f), duty ratio (D), capacitance ratio (k), and the load resistance (RL). To offer a comparative understanding, the performance parameters, namely, the power output capability, efficiency, peak switch voltage and current, peak resonant capacitor voltages, and the peak current in the lumped network, are determined quantitatively. It is found that the class EF2 and E/F3 inverters, in general, have higher efficiency and comparable power output capability with respect to the class E inverter. More specifically, the class EF2 (parallel LC and in series to the load network) and E/F3 (parallel LC and in series to the load network) maintain 90% efficiency compared to 80% for class E inverter at the optimum operating condition. Furthermore, the peak switch voltage and current in these inverters are on average 20–30% lower than the class E and other versions for k > 1. The analysis also shows that the class EF2 and E/F3 inverters should be operated in the stretch of 1 < k < 5 and D = 0.3–0.6 at the optimum load to sustain the high-performance standard.

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2

Shigeno, Akinobu, and Hirotaka Koizumi. "Voltage-Source Parallel Resonant Class E Inverter." IEEE Transactions on Power Electronics 34, no. 10 (October 2019): 9768–78. http://dx.doi.org/10.1109/tpel.2019.2892421.

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3

Kazimierczuk, M. K., and J. Jozwik. "Resonant DC/DC converter with class-E inverter and class-E rectifier." IEEE Transactions on Industrial Electronics 36, no. 4 (1989): 468–78. http://dx.doi.org/10.1109/41.43017.

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4

Yarn, Kao Feng, King Kung Wu, Kai Hsing Ma, and Wen Chung Chang. "Ultrasonic Welding Driver with Class-E Inverter Design." Advanced Materials Research 204-210 (February 2011): 2071–74. http://dx.doi.org/10.4028/www.scientific.net/amr.204-210.2071.

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A robust circuit design using matching technology to design the ultrasonic welding transducer driver with zero voltage switching is proposed. The feedback output voltage is used to control the oscillator frequency to achieve the self-tracking function. Experimental results exhibit that the Class-E inverter circuit can be effectively and stably applied on the high power ultrasonic welding system.

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5

Kazimierczuk, M. K., and X. T. Bui. "Class-E amplifier with an inductive impedance inverter." IEEE Transactions on Industrial Electronics 37, no. 2 (April 1990): 160–66. http://dx.doi.org/10.1109/41.52966.

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6

KOIZUMI, HIROTAKA, MOTOKI FUJII, TADASHI SUETSUGU, and SHINSAKU MORI. "NEW RESONANT DC/DC CONVERTER WITH CLASS DE INVERTER AND CLASS E RECTIFIER." Journal of Circuits, Systems and Computers 05, no. 04 (December 1995): 559–74. http://dx.doi.org/10.1142/s0218126695000345.

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A new resonant dc/dc converter is proposed. It consists of a Class DE inverter and a Class E rectifier. Class E switching conditions are achieved for both the inverter and rectifier. Therefore, the efficiency of the converter is very high at switching frequencies in the megahertz range. In this paper, we give an analysis, design equations and experimental results for the proposed circuit. Experimental waveforms were in good agreement with the theory. The measured dc/dc power conversion efficiency was over 83% at 1 MHz 2.3 W.

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7

Arumugam, S., S. Ramareddy, and M. Sridhar. "Simulation Comparison Of Class D/ Class E Inverter Fed Induction Heating." i-manager's Journal on Electrical Engineering 5, no. 1 (September 15, 2011): 61–66. http://dx.doi.org/10.26634/jee.5.1.1571.

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8

Yuan, Tao, Xiaoxiao Dong, Husain Shekhani, Chaodong Li, Yuichi Maida, Tonshaku Tou, and Kenji Uchino. "Driving an inductive piezoelectric transducer with class E inverter." Sensors and Actuators A: Physical 261 (July 2017): 219–27. http://dx.doi.org/10.1016/j.sna.2017.05.021.

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9

Kaczmarczyk, Z., and W. Jurczak. "A Push–Pull Class-E Inverter With Improved Efficiency." IEEE Transactions on Industrial Electronics 55, no. 4 (April 2008): 1871–74. http://dx.doi.org/10.1109/tie.2007.907665.

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10

Ueda, Hayato, and Hirotaka Koizumi. "Class-E2 DC-DC Converter With Basic Class-E Inverter and Class-E ZCS Rectifier for Capacitive Power Transfer." IEEE Transactions on Circuits and Systems II: Express Briefs 67, no. 5 (May 2020): 941–45. http://dx.doi.org/10.1109/tcsii.2020.2981131.

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11

Kazimierczuk, M. K., and X. T. Bui. "Class E DC/DC converters with an inductive impedance inverter." IEEE Transactions on Power Electronics 4, no. 1 (January 1989): 124–35. http://dx.doi.org/10.1109/63.21881.

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12

Kazimierczuk, M. K., and X. T. Bui. "Class-E DC/DC converters with a capacitive impedance inverter." IEEE Transactions on Industrial Electronics 36, no. 3 (1989): 425–33. http://dx.doi.org/10.1109/41.31506.

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13

Bernal, Carlos, Estanis Oyarbide, Pilar Molina Gaudo, and Arturo Mediano. "Dynamic Model of Class-E Inverter With Multifrequency Averaged Analysis." IEEE Transactions on Industrial Electronics 59, no. 10 (October 2012): 3737–44. http://dx.doi.org/10.1109/tie.2012.2185012.

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14

Young-Jin Woo, Min-Chul Lee, Kwang-Chan Lee, and Gyu-Hyeong Cho. "One-Chip Class-E Inverter Controller for Driving a Magnetron." IEEE Transactions on Industrial Electronics 56, no. 2 (February 2009): 400–407. http://dx.doi.org/10.1109/tie.2008.926775.

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15

Sensui, Tomohiro, and Hirotaka Koizumi. "Load-Independent Class E Zero-Voltage-Switching Parallel Resonant Inverter." IEEE Transactions on Power Electronics 36, no. 11 (November 2021): 12805–18. http://dx.doi.org/10.1109/tpel.2021.3077077.

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16

Xiao, Wenxun, Ruigeng Shen, Bo Zhang, Dongyuan Qiu, Yanfeng Chen, and Tian Li. "Effects of Foreign Metal Object on Soft-Switching Conditions of Class-E Inverter in WPT." Energies 11, no. 8 (July 24, 2018): 1926. http://dx.doi.org/10.3390/en11081926.

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A foreign metal object will deteriorate the performance of wireless power transfer (WPT) systems and cause insecurity issues. Therefore, the influence principles and rules of foreign metal objects on soft-switching conditions of Class-E inverters and the performance of WPT systems are developed in this paper. The effects of different metal materials on coil parameters at different frequencies and positions are analyzed first, then the effects of foreign metal objects on soft-switching conditions of Class-E inverters and the power transfer capability of WPT systems are investigated. Principle analyses and simulation results demonstrate that there are significantly different effects on the soft-switching conditions and power transfer when a foreign metal object is placed near the transmitter coil or the receiver coil. In addition, the monotonicity of the variation in power transfer also depends on the position of the foreign metal object. Finally, a WPT experimental prototype with a Class-E inverter is implemented to verify the influence principles and rules of foreign metal objects. The experimental results are highly consistent with the principle analyses and simulation results.

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17

Kazimierczuk, M. K., and J. Jozwik. "DC/DC converter with class E zero-voltage-switching inverter and class E zero-current-switching rectifier." IEEE Transactions on Circuits and Systems 36, no. 11 (1989): 1485–88. http://dx.doi.org/10.1109/31.41309.

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18

Corti, Fabio, Alberto Reatti, Ya-Hui Wu, Dariusz Czarkowski, and Salvatore Musumeci. "Zero Voltage Switching Condition in Class-E Inverter for Capacitive Wireless Power Transfer Applications." Energies 14, no. 4 (February 9, 2021): 911. http://dx.doi.org/10.3390/en14040911.

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This paper presents a complete design methodology of a Class-E inverter for capacitive wireless power transfer (CWPT) applications, focusing on the capacitance coupling influence. The CWPT has been investigated in this paper, because most of the literature refers to inductive power transfer (IWPT). However, CWPT in perspective can result in lower cost and higher reliability than IWPT, because it does not need coils and related shields. The Class-E inverter has been selected, because it is a single switch inverter with a grounded MOSFET source terminal, and this leads to low costs and a simple control strategy. The presented design procedure ensures both zero voltage switching (ZVS) and zero derivative switching (ZDS) conditions at an optimum coupling coefficient, thus enabling a high transmission and conversion efficiency. The novelties of the proposed method are that the output power is boosted higher than in previous papers available in the literature, the inverter is operated at a high conversion efficiency, and the equivalent impedance of the capacitive wireless power transfer circuit to operate in resonance is exploited. The power and the efficiency have been increased by operating the inverter at 100 kHz so that turn-off losses, as well as losses in inductor and capacitors, are reduced. The closed-form expressions for all the Class-E inverter voltage and currents waveforms are derived, and this allows for the understanding of the effects of the coupling coefficient variations on ZVS and ZDS conditions. The analytical estimations are validated through several LTSpice simulations and experimental results. The converter circuit, used for the proposed analysis, has been designed and simulated, and a laboratory prototype has been experimentally tested. The experimental prototype can transfer 83.5 W at optimal capacitive coupling with operating at 100 kHz featuring 92.5% of the efficiency, confirming that theoretical and simulation results are in good agreement with the experimental tests.

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19

Oh, Yongseung, Jaeeul Yeon, Jayoon Kang, Ilya Galkin, Wonsoek Oh, and Kyumin Cho. "Sensorless Control of Voltage Peaks in Class-E Single-Ended Resonant Inverter for Induction Heating Rice Cooker." Energies 14, no. 15 (July 28, 2021): 4545. http://dx.doi.org/10.3390/en14154545.

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Single-ended (SE) resonant inverters are widely used as power converters for high-pressure rice cooker induction, with 1200 V insulated-gate bipolar transistors (IGBTs) being used as switching devices for kW-class products. When voltage fluctuations occur at the input stage of an SE resonant inverter, the resonant voltage applied to the IGBT can be directly affected, potentially exceeding the breakdown voltage of the IGBT, resulting in its failure. Consequently, the resonant voltage should be limited to below a safety threshold—hardware resonant voltage limiting methods are generally used to do so. This paper proposes a sensorless resonant voltage control method that limits the increase in the resonant voltage caused by overvoltage or supply voltage fluctuations. By calculating and predicting the resonance voltage through the analysis of the resonance circuit, the resonance voltage is controlled not to exceed the breakdown voltage of the IGBT. The experimental results of a 1.35 kW SE resonant inverter for a high-pressure induction heating rice cooker were used to verify the validity of the proposed sensorless resonant voltage limiting method.

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20

Yusop, Yusmarnita, Shakir Saat, Sing Kiong Nguang, Huzaimah Husin, and Zamre Ghani. "Design of Capacitive Power Transfer Using a Class-E Resonant Inverter." Journal of Power Electronics 16, no. 5 (September 20, 2016): 1678–88. http://dx.doi.org/10.6113/jpe.2016.16.5.1678.

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21

Nagashima, Tomoharu, Xiuqin Wei, Takuji Kousaka, and Hiroo Sekiya. "Bifurcation analysis of the class-E inverter for switching-pattern derivations." IEICE Communications Express 1, no. 1 (2012): 33–39. http://dx.doi.org/10.1587/comex.1.33.

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22

Kawamoto, D., H. Sekiya, H. Koizumi, I. Sasase, and S. Mori. "Design of Phase-Controlled Class E Inverter With Asymmetric Circuit Configuration." IEEE Transactions on Circuits and Systems II: Express Briefs 51, no. 10 (October 2004): 523–28. http://dx.doi.org/10.1109/tcsii.2004.834546.

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23

Yusop, Yusmarnita, Mohd Shakir Md. Saat, Siti Huzaimah Husin, Sing Kiong Nguang, and Imran Hindustan. "Performance assessment of class-E inverter for capacitive power transfer system." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 4 (July 3, 2017): 1237–56. http://dx.doi.org/10.1108/compel-05-2016-0238.

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Purpose This paper aims to present a new wireless power transfer technique using capacitive coupling. The capacitive power transfer (CPT) system has been introduced as an attractive alternative to the traditional inductive coupling method. The CPT offers benefits such as simple topology, fewer components, better electromagnetic interference (EMI) performance and robustness to surrounding metallic elements. Design/methodology/approach A class-E inverter together with and without inductor capacitor (LC) matching circuit has been utilised in this work because of its ability to perform the DC-to-AC inversion efficiently with significant reduction in switching losses. The validity of the proposed concept has been verified by conducting a laboratory experiment of the CPT system. Findings The performances for both systems are analysed and evaluated. A 9.7 W output power is generated through a combined interface [printed circuit board (PCB) plate] capacitance of 2.82 nF at an operating frequency of 1 MHz, with 97 per cent efficiency for 0.25 mm coupling gap distance. Originality value An efficient CPT system with class-E LC matching topology is proposed in this paper. With this topology, the zero-voltage switching can be achieved even if the load is different by properly designing the LC matching transformation circuit.

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24

Yusop, Yusmarnita, Shakir Saat, Huzaimah Husin, Imran Hindustan, F. K. Abdul Rahman, K. H. Kamarudin, and Sing Kiong Nguang. "A Study of Capacitive Power Transfer Using Class-E Resonant Inverter." Asian Journal of Scientific Research 9, no. 5 (August 15, 2016): 258–65. http://dx.doi.org/10.3923/ajsr.2016.258.265.

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25

KOMATSU, WALDIR PO WILSON. "A simple and reliable class E inverter for induction heating applications." International Journal of Electronics 84, no. 2 (February 1998): 157–65. http://dx.doi.org/10.1080/002072198134922.

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26

Zhang, Shaoteng, Jinbin Zhao, Yuebao Wu, Ling Mao, Jiongyuan Xu, and Jiajun Chen. "Analysis and Implementation of Inverter Wide-Range Soft Switching in WPT System Based on Class E Inverter." Energies 13, no. 19 (October 5, 2020): 5187. http://dx.doi.org/10.3390/en13195187.

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This article addresses the problem of hard switching caused by the change of equivalent load in a wireless power transfer (WPT) system based on a class E inverter. Based on the load-sensitive characteristics of the class E inverter, the coil structure is improved, and the self/mutual inductance compensation method of the transmitting coil is proposed to realize a wide range of soft switching. On the basis of fully considering the coupling relationship between the source and load coils, a coil structure with multiple coils in series on the primary side is proposed, and the cross-coupling relationship between the coils is analyzed in detail and simplified. The inverter parameters and coupling mechanism were adjusted by means of coil series reverse connection. Combined with the parameter influence law and the load equivalent principle of the class E inverter, the margin of soft switching at the inverter side was increased and the load offset correction was carried out. The soft-switching effect of the equivalent load from 0 to 3.3 times of ideal load was obtained, and the purpose of improving system reliability and efficiency was achieved. Finally, the feasibility and effectiveness of the proposed method were verified by simulation and experiment.

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27

Sekiya, H., S. Nemoto, Jianming Lu, and T. Yahagi. "Phase control for resonant DC-DC converter with class-DE inverter and class-E rectifier." IEEE Transactions on Circuits and Systems I: Regular Papers 53, no. 2 (February 2006): 254–63. http://dx.doi.org/10.1109/tcsi.2005.855741.

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28

Widiyanto, Romualdy, Mochammad Facta, and Agung Warsito. "PERANCANGAN E CLASS ZERO-VOLTAGE-SWITCHING π1b RESONANT INVETER FREKUENSI RENDAH DENGAN PEMICUAN IC SG 3524." TRANSIENT 7, no. 1 (March 13, 2018): 92. http://dx.doi.org/10.14710/transient.7.1.92-99.

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Photovoltaic merupakan sumber energi terbarukan yang banyak dikembangkan, namun output dari photovoltaic masih dalam bentuk arus searah (DC). Oleh karena itu, diperlukan perangkat yang bisa mengubah tegangan DC menjadi tegangan arus bolak balik (AC). E class zero-voltage-switching resonant inverter sebagai salah satu konverter DC ke AC akan diimplementasikan. Rangkaian E class zero-voltage-switching resonant inverter dikontrol melalui sinyal analog PWM yang dibangkitkan IC SG3524. Penggunaan ZVS (Zero Voltage Switcing) memiliki tujuan untuk mengurangi kerugian tegangan pada proses switching MOSFET. Rangkaian resonan π1b dirancang dan digunakan untuk memperbaiki bentuk gelombang keluaran dan meningkatkan tegangan keluaran inverter. Percobaan dilakukan dengan variasi beban, duty cycle, dan frekuensi untuk menyelidiki respon E class zero-voltage-switching π1b resonant inverter. Beban berupa lampu pijar 15W, lampu pijar 25W, dan motor induksi satu fasa capacitor run. Dari hasil uji tegangan keluaran didapatkan bahwa nilai tegangan keluaran meningkat dari frekuensi 49Hz ke 50Hz, kemudian nilai tegangan keluaran menurun dari frekuensi 50Hz ke 51Hz. Pada variasi duty cycle, tegangan output meningkat dari duty cycle 10% ke 50% dan kemudian tegangan output menurun dari duty cycle 50% ke 90%. Frekuensi juga mempengaruhi kecepatan putar motor, seiring dengan meningkatnya frekuensi, kecepatan putaran motor juga meningkat.

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29

Woo, Young-Jin, Sang-Kyung Kim, and Gyu-Hyeong Cho. "Voltage-Clamped Class-E Inverter With Harmonic Tuning Network for Magnetron Drive." IEEE Transactions on Circuits and Systems II: Express Briefs 53, no. 12 (December 2006): 1456–60. http://dx.doi.org/10.1109/tcsii.2006.884121.

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30

Aldhaher, Samer, Patrick Chi-Kwong Luk, Akram Bati, and James F. Whidborne. "Wireless Power Transfer Using Class E Inverter With Saturable DC-Feed Inductor." IEEE Transactions on Industry Applications 50, no. 4 (July 2014): 2710–18. http://dx.doi.org/10.1109/tia.2014.2300200.

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31

Ribas, Javier, Pablo J. Quintana-Barcia, Jesus Cardesin, Antonio J. Calleja, and Emilio Lopez Corominas. "LED Series Current Regulator Based on a Modified Class-E Resonant Inverter." IEEE Transactions on Industrial Electronics 65, no. 12 (December 2018): 9488–97. http://dx.doi.org/10.1109/tie.2018.2822618.

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32

Husin, H., S. Saat, Y. Yusmarnita, Z. Ghani, I. Hindustan, and S. K. Nguang. "Simulation of 416 kHz Piezoelectric Transducer Excitation using Class E ZVS Inverter." Asian Journal of Scientific Research 9, no. 4 (June 15, 2016): 176–87. http://dx.doi.org/10.3923/ajsr.2016.176.187.

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33

Bugade, Vilas, Hemlata Joshi, and Ekta Mishra. "Modeling and Simulation of Class E Resonant Inverter for Induction Cooking Application." International Journal of Engineering Trends and Technology 60, no. 1 (June 25, 2018): 51–56. http://dx.doi.org/10.14445/22315381/ijett-v60p207.

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34

Ayachit, Agasthya, Fabio Corti, Alberto Reatti, and Marian K. Kazimierczuk. "Zero-Voltage Switching Operation of Transformer Class-E Inverter at Any Coupling Coefficient." IEEE Transactions on Industrial Electronics 66, no. 3 (March 2019): 1809–19. http://dx.doi.org/10.1109/tie.2018.2838059.

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35

Pullabhatla, Sai Kiran, Phaneendra Babu Bobba, and Satyavani Yadlapalli. "Comparison of GAN, SIC, SI Technology for High Frequency and High Efficiency Inverters." E3S Web of Conferences 184 (2020): 01012. http://dx.doi.org/10.1051/e3sconf/202018401012.

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Power semiconductor devices plays a major role in efficient power conversion. As we have Silicon (Si), Silicon Carbide (SiC) and Gallium Nitride (GaN) based power devices, GaN technologies are ideal for working in high frequency power electronic systems (in MHz). Because the GaN has superior electron mobility and bandgap than the SiC and Si it has superior characteristics like low conduction losses, high switching rate so that there is better power efficiency than SiC, Si based inverter. Here we are using the Gan based High-Electron-Mobility Transistor (HEMT) and SiC and Si based mosfet in the inverter. The proposed inverter of different topologies is designed to transfer the power at >1MHz range. Comparison of the three different switches is done by the output power and the efficiency of the inverter. This paper presents the SPICE simulation results of the class d and class e inverter of output power 1KW.

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36

Lotfi, Ali, Akihiko Katsuki, Fujio Kurokawa, Hiroo Sekiya, Marian K. Kazimierczuk, and Frede Blaabjerg. "Steady-State Analysis of Class-E Shunt Inductor Inverter Outside ZCS and ZDCS Conditions." IEEE Transactions on Components, Packaging and Manufacturing Technology 9, no. 8 (August 2019): 1587–94. http://dx.doi.org/10.1109/tcpmt.2018.2890703.

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37

MIKOŁAJEWSKI, Mirosław. "Output voltage control in the Class E ZVS inverter by frequency or reactance regulation." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 9 (September 2, 2020): 10–17. http://dx.doi.org/10.15199/48.2020.09.02.

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38

Rybicki, Krystian, and Rafał M. Wojciechowski. "Analysis and design of a class E current-driven rectifier for 1 MHz wireless power transfer system." Journal of Electrical Engineering 70, no. 1 (February 1, 2019): 58–63. http://dx.doi.org/10.2478/jee-2019-0008.

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Abstract The paper presents the design of the class E current-driven rectifier, which is intended for operation in the wireless power transmission system, as well as the concept of selection of the rectifier parameters which allows the operation with high efficiency. The selection of the rectifier parameters was performed with a view to the use of the existing wireless power transmission (WPT) system. The procedure for selection of the rectifier parameters has been proposed to enable its optimal use in reference to the system parameters given already at the design stage, ie; load resistance and the coil magnetic coupling factor (distance between coils). In order to verify the correctness of the procedure for selection of the parameters, the numerical model of the system which consists of the class E resonance inverter, the air-core transformer and the designed E class rectifier system was developed in the LTspice environment. Simulation tests and analysis of the obtained calculation results were performed. Based on the simulation results, a prototype of the class E rectifier system which cooperates with the existing wireless power transmission system supplied from the class E inverter was developed. The obtained results of laboratory measurements demonstrated a high compliance with the simulation results, thus, confirming the correctness of the proposed design procedure and the high operating efficiency of the rectifier system.

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39

Muharam, Aam, Tarek Mahmoud Mostafa, Suziana Ahmad, Mitsuru Masuda, Daiki Obara, Reiji Hattori, and Abdul Hapid. "Preliminary study of 50 W Class-E GaN FET amplifier for 6.78 MHz capacitive wireless power transfer." Journal of Mechatronics, Electrical Power, and Vehicular Technology 11, no. 1 (July 30, 2020): 22. http://dx.doi.org/10.14203/j.mev.2020.v11.22-29.

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A preliminary study of Class-E radio frequency power amplifier for wireless capacitive power transfer (CPT) system is presented in this paper. Due to a limitation in coupling capacitance value, a high frequency operation of switching power inverter is necessary for the CPT system. A GaN MOSFET offers reliability and performance in a high frequency operation with an improved efficiency over a silicon device. Design specification related to the parallel load parameter, LC impedance matching and experimental analysis of the amplifier is explored. An experimental setup for the proposed inverter and its integration with the CPT system is provided, and the power efficiency is investigated. As a result, by utilizing a 6.78 MHz resonant frequency and a 50 Ω resistive load, 50 W of power has been transmitted successfully with an end to end system efficiency over 81 %. Additionally, above 17 W wireless power transfer was demonstrated successfully in the CPT system under 6 pF coupling with the efficiency over 70 %.

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40

Ashique, Ratil H., A. S. M. Shihavuddin, Mohammad Monirujjaman Khan, Aminul Islam, Jubaer Ahmed, M. Saad Bin Arif, Md Hasan Maruf, Ahmed Al Mansur, Mohammad Asif ul Haq, and Ashraf Siddiquee. "An Analysis and Modeling of the Class-E Inverter for ZVS/ZVDS at Any Duty Ratio with High Input Ripple Current." Electronics 10, no. 11 (May 30, 2021): 1312. http://dx.doi.org/10.3390/electronics10111312.

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This paper presents an analysis and modeling of the class-E inverter for ZVS/ZVDS execution at any duty ratio. The methodology is to determine the input current to the inverter analytically under the assumption that it always remains positive. The latter is ensured by proper selection of the input inductance such that the inverter always operates either in (1) the border condition mode or in (2) the continuous conduction mode regardless of the input ripple. Using this input current and applying the boundary conditions, the required input capacitance for the ZVS/ZVDS execution is determined at a specified input/output voltage, output power and load. The analysis shows that the ZVS/ZVDS can be achieved while the input capacitance is selected appropriately. A comparison between the analytical and simulation results is also formulated involving the proposed and other existing models. The simulation results that are provided at different duty ratios demonstrate that they are in a better agreement with the proposed analytical model regardless of the input inductance and the state of input ripple current. The analytical modeling is facilitated by using MAPLE®.

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41

Nagashima, Tomoharu, Xiuqin Wei, Tadashi Suetsugu, Marian K. Kazimierczuk, and Hiroo Sekiya. "Waveform Equations, Output Power, and Power Conversion Efficiency for Class-E Inverter Outside Nominal Operation." IEEE Transactions on Industrial Electronics 61, no. 4 (April 2014): 1799–810. http://dx.doi.org/10.1109/tie.2013.2267693.

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42

Zulinski, R. E., K. J. Herman, and J. C. Mandojana. "The infeasibility of constant output power in a constant-current-fed class-E power inverter." IEEE Transactions on Industrial Electronics 38, no. 1 (1991): 81–82. http://dx.doi.org/10.1109/41.103490.

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Ribas, Quintana, Cardesin, Calleja, and Lopez-Corominas. "Single-Switch LED Post-Regulator Based on a Modified Class-E Resonant Converter with Voltage Clamp." Electronics 8, no. 7 (July 16, 2019): 798. http://dx.doi.org/10.3390/electronics8070798.

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Abstract:

The strict restrictions imposed both by mandatory regulations and by the recommendations contained in current standards have led to the fact that most commercially available LED ballasts nowadays use two-stage topologies. The first stage is intended to comply with the harmonics standards and the second stage is used to control the LED current and reduce the low frequency ripple. In this work, a new DC–DC resonant converter topology is presented. This topology is derived from a modified Class-E resonant inverter by adding a clamping diode. This diode achieves a double goal: it limits the maximum switch voltage and works as a power recirculating path. This way, the proposed topology behaves as a loss-less impedance placed in series with the LED thus allowing to control the output power. This converter maintains the extremely small switching losses inherent to the Class-E inverter while reducing the voltage stress across the switch. This work presents a simplified design methodology based on the fundamental approach. This methodology was used to design and build a DC–DC post-regulator for a 40 W LED lamp. The results obtained with the laboratory prototype show that this circuit can be used to stabilize and dim the LED current while maintaining very small losses. The measured efficiency was 95.7% at nominal power and above 90% when dimmed down to 25%.

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Sarnago, Héctor, Arturo Mediano, and Oscar Lucía. "Design and Implementation of a Class-E Self-Oscillating Inverter for Cost-Effective Induction Heating Systems." EPE Journal 22, no. 4 (December 2012): 11–16. http://dx.doi.org/10.1080/09398368.2012.11463834.

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LIN, C. H. "The Tracking of the Optimal Operating Frequency in a Class E Backlight Inverter Using the PLL Technique." IEICE Transactions on Electronics E88-C, no. 6 (June 1, 2005): 1253–62. http://dx.doi.org/10.1093/ietele/e88-c.6.1253.

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Li, Yen‐Fang. "Active zero voltage switching tracking controller design for class E inverter to counteract the resonant components shifting." IET Power Electronics 8, no. 10 (October 2015): 2016–25. http://dx.doi.org/10.1049/iet-pel.2014.0310.

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Li, Yen‐Fang. "Exact analysis and design of zero voltage switching operation for class E inverter with circuit components varying." IET Power Electronics 6, no. 1 (January 2013): 38–51. http://dx.doi.org/10.1049/iet-pel.2012.0276.

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Grzesik, Boguslaw, Zbigniew Kaczmarczyk, and Jacek Junak. "The simplified model of the Class E inverter with the PWL model of the MOSFET turn off." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 16, no. 2 (June 1997): 84–91. http://dx.doi.org/10.1108/03321649710172770.

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Lee, D. Y., and D. S. Hyun. "Hybrid control scheme of active-clamped Class E inverter with induction heating jar for high power applications." IEE Proceedings - Electric Power Applications 151, no. 6 (2004): 704. http://dx.doi.org/10.1049/ip-epa:20040582.

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Surakitbovorn, Kawin, and Juan M. Rivas-Davila. "A Method to Eliminate Discrete Inductors in a Class-E Inverter Used in Wireless Power Transfer Applications." IEEE Journal of Emerging and Selected Topics in Power Electronics 8, no. 3 (September 2020): 2167–78. http://dx.doi.org/10.1109/jestpe.2019.2949234.

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