Autonomous Polyphase Current-Fed Push–Pull Resonant Converter Based on Ring Coupled Oscillators

Abdolkhani, Ali; Hu, Aiguo Patrick; Tian, Jie

doi:10.1109/jestpe.2014.2377171

Cited by 9 publications

(4 citation statements)

References 39 publications

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“…A half-bridge inverter is structurally equivalent to replacing the two MOSFETs in a voltage-source full-bridge inverter with two capacitors or inductors. Half-bridge inverters can also be further divided into voltage-mode half-bridge inverters [40,41] and currentmode half-bridge inverters [42], depending on the reactive components included. The voltage-type half-bridge inverter is structurally equivalent to replacing the two MOSFETs on the right side of the full-bridge inverter with two capacitive elements, and its output is only half of the voltage-type full-bridge inverter, so it is generally applicable for small and medium power applications.…”

Section: High-frequency Convertermentioning

confidence: 99%

Research and Application of Capacitive Power Transfer System: A Review

Wang

Zhang

et al. 2022

Electronics

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Capacitive power transfer (CPT) uses an electric field as the transfer medium to achieve wireless power transfer (WPT). Benefitting from the low eddy current loss, simple system structure and strong plasticity of the coupling coupler, the CPT system has recently gained much attention. The CPT system has significantly improved transfer power, system efficiency, and transfer distance due to continuous research and discussion worldwide. This review briefly presents the basic working principle of the CPT system and summarizes the theoretical research in four aspects, including coupling coupler and high-frequency power converter. Following this, the review focuses on research in six key directions, including system modelling and efficiency optimization. The application of CPT technology in five fields, including medical devices and transportation, is also discussed. This review introduces the progress of CPT research in recent years, hoping to serve as a reference for researchers, to promote the further research and application of the CPT system.

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Section: High-frequency Convertermentioning

confidence: 99%

Research and Application of Capacitive Power Transfer System: A Review

Wang

Zhang

et al. 2022

Electronics

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“…Recently, an autonomous current-fed push-pull resonant inverter with ZVS operation was proposed in which the driving signal was generated automatically without external gate control and kept running at the steady state [55], as shown in Figure 5c. In this topology, the startup should be analyzed, since the two switches S 1 and S 2 tend to turn ON simultaneously once the DC power supply is turned ON.…”

Section: Other Resonant Invertersmentioning

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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“…The heat dissipation problem in single switch device also hinder its expansion in medium & high power application. Push-pull IPT system gets attention for its simple structure and high efficiency in IPT application [31]- [33]. However, It needs bigger and costlier inductors compared to capacitances with high-energy storage density.…”

Section: Introductionmentioning

confidence: 99%

Total Harmonic Distortion and Output Current Optimization Method of Inductive Power Transfer System for Power Loss Reduction

Zhang

Luo

et al. 2020

IEEE Access

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Inductive power transfer (IPT) system is widely used in material handling. A typical structure of the system takes an H-bridge inverter with an inductor-capacitor-inductor (LCL) resonant filter to realize a constant track current supplying changeless energy to the second side. However, the output voltage total harmonic distortion (THD) of the inverter increases, which causes the increase of output current circulation, when using voltage width control method to eliminate source voltage fluctuating. Therefore, a two-stage converter is proposed to optimize the output current circulation. The two-stage IPT system is composed of a boost converter cascaded with an H-bridge resonant inverter. The boost converter is employed to provide a higher and stable DC bus voltage. The H-bridge resonant inverter operates in a fixed width with a constant switching frequency. With the proposed topology, the THD of the high frequency voltage maintains the minimum value to realize minimum output current circulation in the LCL filter. The soft switching is realized to reduce the losses. Furthermore, expressions of coil and track model are presented by combining the theoretical analysis and finite element analysis (FEA). The experimental results show that over 76.6% efficiency is demonstrated in conditions of an 800 W load at the 14% source voltage fluctuation and the maximum efficiency was 78.6 %. The range of efficiency variation was 2% compared to a full-bridge system with voltage pluse-width control of which was 4.6%. INDEX TERMS Inductive power transfer (IPT), material handling, THD optimization, soft switching, finite element analysis (FEA).

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Autonomous Polyphase Current-Fed Push–Pull Resonant Converter Based on Ring Coupled Oscillators

Cited by 9 publications

References 39 publications

Research and Application of Capacitive Power Transfer System: A Review

Research and Application of Capacitive Power Transfer System: A Review

An Overview of Resonant Circuits for Wireless Power Transfer

Total Harmonic Distortion and Output Current Optimization Method of Inductive Power Transfer System for Power Loss Reduction

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