Wireless Power Transfer Using Class E Inverter With Saturable DC-Feed Inductor

Aldhaher, Samer; Luk, P.C.K.; Bati, Akram; Whidborne, James F.

doi:10.1109/tia.2014.2300200

Cited by 81 publications

(14 citation statements)

References 18 publications

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“…For high power level WPT applications, this topology can control the output power via manipulating the duty cycle control or varying the switching frequency with an efficiency sacrifice [44]. However, the main disadvantage of the Class E resonant inverter is its high peak voltage across the switch, reaching up to 3.5 times DC voltage at a duty cycle of 0.5.…”

Section: Class E Resonant Invertermentioning

confidence: 99%

An Overview of Resonant Circuits for Wireless Power Transfer

et al. 2017

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Abstract:With ever-increasing concerns for the safety and convenience of the power supply, there is a fast growing interest in wireless power transfer (WPT) for industrial devices, consumer electronics, and electric vehicles (EVs). As the resonant circuit is one of the cores of both the near-field and far-field WPT systems, it is a pressing need for researchers to develop a high-efficiency high-frequency resonant circuit, especially for the mid-range near-field WPT system. In this paper, an overview of resonant circuits for the near-field WPT system is presented, with emphasis on the non-resonant converters with a resonant tank and resonant inverters with a resonant tank as well as compensation networks and selective resonant circuits. Moreover, some key issues including the zero-voltage switching, zero-voltage derivative switching and total harmonic distortion are addressed. With the increasing usage of wireless charging for EVs, bidirectional resonant inverters for WPT based vehicle-to-grid systems are elaborated.

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Section: Class E Resonant Invertermentioning

confidence: 99%

An Overview of Resonant Circuits for Wireless Power Transfer

et al. 2017

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“…Penelitian mengenai pemanfaatan inverter jenis E class Zero-Voltage-Switching Resonant sudah dilakukan oleh beberapa peneliti luar negeri seperti pada penelitian [3] mengenai pemanfaatan inverter jenis E class single-switch untuk pemanas induksi. Penelitian [4] mengenai inverter jenis E class single-switch untuk Wireless Power Transfer. Penelitian [5] mengenai pemanfaatan inverter jenis E class single-switch untuk suplai lampu fluorescent.…”

Section: Pendahuluanunclassified

PERANCANGAN E CLASS ZERO-VOLTAGE-SWITCHING π1b RESONANT INVETER FREKUENSI RENDAH DENGAN PEMICUAN IC SG 3524

2018

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AbstrakPhotovoltaic 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. AbstractPhotovoltaic is a renewable energy source that is widely developed, however the output of photovoltaic is still in a form of direct current (DC). Therefore, a device that can convert DC voltage to alternating current (AC) voltage is needed. E class zero-voltage-switching resonant inverter as one of DC to AC converter is interested to be implemented. The use of zero-voltage-switching has a purpose to reduce the voltage losses in mosfet switching process. The π1b resonant circuit was designed and used to improved the output waveform and increased the output voltage of the inverter. The experiments were carried out by variation of load. The loads were a 15W incandescent lamp, 25W incandescent lamp, and one phase induction motor capacitor run. From the output voltage test results it was found that the output voltage value increased from the frequency of 49Hz to 50Hz, then decreased from frequency of 50Hz to 51Hz. In the duty cycle variation, the output voltage increased from the 10% to 50% and then decreased from the duty cycle 50% to 90%. Frequency also affect the motor rotation speed, as the frequency rise, the speed of motor rotation also increased.

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“…4], namely x. The feasible range of x is defined as From (1), (12), (17), (19), (32), and (33), the system efficiency can be expressed by a function of design parameters x, constant parameters p con , and variables p var , η sys (x, p var ) = f (x, p con , p var ).…”

Section: Parameter Design Proceduresmentioning

confidence: 99%

Analysis and Design of A Robust Class $E^2$ DC–DC Converter for Megahertz Wireless Power Transfer

Liu

Qiao

Liu

et al. 2017

IEEE Trans. Power Electron.

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Wireless power transfer (WPT) working at megahertz (MHz) is widely considered a promising technology for midrange and low-power applications. A Class E 2 dc-dc converter is composed of a Class E power amplifier (PA) and a Class E rectifier. It is attractive for applications in MHz WPT due to the soft-switching properties of both the PA and the rectifier. Using the existing design the Class E 2 dc-dc converter can only achieve optimal performance such as a high efficiency under a fixed operating condition. Meanwhile, in real applications variations in the coil relative position and the final load are common. The purpose of this paper is to analyze and develop a general design methodology for a robust Class E 2 dc-dc converter in MHz WPT applications. Component and system efficiencies are analytically derived, which serve as the basis for the determination of the design parameters. The classical matching network of the Class E PA is also improved that provides the required impedance compression capability. Then a robust parameter design procedure is developed. Both the experimental and calculated results show that proposed design approach can significantly improve the robustness of the efficiency of the Class E 2 dc-dc converter against variations in coil relative position and final load. Finally, the experiments show that the range of variation of the system efficiency is narrowed from 47.5%-85.0% to 73.3%-83.7% using the proposed robust design.Index Terms-Wireless power transfer, Class E 2 dc-dc converter, efficiency, matching network, robust analysis and design.

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Wireless Power Transfer Using Class E Inverter With Saturable DC-Feed Inductor

Cited by 81 publications

References 18 publications

An Overview of Resonant Circuits for Wireless Power Transfer

An Overview of Resonant Circuits for Wireless Power Transfer

PERANCANGAN E CLASS ZERO-VOLTAGE-SWITCHING π1b RESONANT INVETER FREKUENSI RENDAH DENGAN PEMICUAN IC SG 3524

Analysis and Design of A Robust Class $E^2$ DC–DC Converter for Megahertz Wireless Power Transfer

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