A 4-Plate Compact Capacitive Coupler Design and LCL-Compensated Topology for Capacitive Power Transfer in Electric Vehicle Charging Applications

Zhang, Hua; Lu, Fei; Hofmann, Heath; Liu, Weiguo; Mi, Chris

doi:10.1109/tpel.2016.2520963

Cited by 244 publications

(112 citation statements)

References 20 publications

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“…For example, it has been used in Figure 4 as a general capacitive coupler to analyze the fundamental working principle of a CPT system. Specifically, in this four-plate coupler structure, the relationship between the capacitances in Figure 22 and the equivalent capacitances in Figure 23 is shown below [31,87]. (18) It shows that the equivalent mutual capacitance C M is determined by the main and cross coupling capacitances, while, the self-capacitances C in1 and C in2 also relate to the self-couplings.…”

Section: Four-plate Parallel Structurementioning

confidence: 96%

“…The capacitive coupler acts as a two-port network for the primary and secondary sides. Generally, the capacitive coupler can be represented by its equivalent behavior source model, including two capacitors and two voltage-controlled current sources, as provided in [31]. In a capacitive coupler, there are multiple coupling capacitances between plates, which can increase the complexity of the working principle analysis.…”

Section: General Mathematical Model Of Cpt Systemmentioning

confidence: 99%

“…For example, it has been used in Figure 4 as a general capacitive coupler to analyze the fundamental working principle of a CPT system. Specifically, in this four-plate coupler structure, the relationship between the capacitances in Figure 22 and the equivalent capacitances in Figure 23 is shown below [31,87]. 12 In Figure 22, there is a coupling capacitance between each pair of plates, totally resulting in six capacitances, in which C 13 and C 24 are defined as main coupling capacitances; C 14 and C 23 are defined as cross coupling capacitances; C 12 and C 34 are defined as the self-coupling capacitances.…”

Section: Four-plate Parallel Structurementioning

confidence: 99%

“…Since all the plates are stacked together, it is named as a four-plate stacked structure. When it is used in the vehicle charging application, all the plates are vertically arranged that is also called a four-plate vertical structure [31].…”

Section: Four-plate Stacked Structurementioning

confidence: 99%

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A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

2017

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Capacitive power transfer (CPT) technology is an effective and important alternative to the conventional inductive power transfer (IPT). It utilizes high-frequency electric fields to transfer electric power, which has three distinguishing advantages: negligible eddy-current loss, relatively low cost and weight, and excellent misalignment performance. In recent years, the power level and efficiency of CPT systems has been significantly improved and has reached the power level suitable for electric vehicle charging applications. This paper reviews the latest developments in CPT technology, focusing on two key technologies: the compensation circuit topology and the capacitive coupler structure. The comparison with the IPT system and some critical issues in practical applications are also discussed. Based on these analyses, the future research direction can be developed and the applications of the CPT technology can be promoted.

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Section: Four-plate Parallel Structurementioning

confidence: 96%

Section: General Mathematical Model Of Cpt Systemmentioning

confidence: 99%

“…For example, it has been used in Figure 4 as a general capacitive coupler to analyze the fundamental working principle of a CPT system. Specifically, in this four-plate coupler structure, the relationship between the capacitances in Figure 22 and the equivalent capacitances in Figure 23 is shown below [31,87]. 12 In Figure 22, there is a coupling capacitance between each pair of plates, totally resulting in six capacitances, in which C 13 and C 24 are defined as main coupling capacitances; C 14 and C 23 are defined as cross coupling capacitances; C 12 and C 34 are defined as the self-coupling capacitances.…”

Section: Four-plate Parallel Structurementioning

confidence: 99%

Section: Four-plate Stacked Structurementioning

confidence: 99%

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A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

2017

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“…In particular, the inductive power transfer (IPT), capacitive power transfer (CPT) and permanent magnet coupling (PMC) are the most popular near-field WPT technologies [17][18][19]. Moreover, based on the resonance of magnetic …”

Section: Introductionmentioning

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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Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices

Zhang

Das

Zhao

et al. 2022

Adv Materials Technologies

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Cardiovascular disease continues to be one of the dominant causes of global mortality. One effective treatment is to utilize cardiovascular implantable devices (cIMDs) with multi‐functional cell sensing and monitoring features that have the potential to manipulate cardiovascular hyperplasia disorders as well as provide therapy. However, batteries with a fixed capacity entail high‐risk surgeries for battery‐replacement, which causes health hazards and imposes significant costs to patients. This review accesses comprehensive power solutions for cIMDs, from conventional batteries to state‐of‐the‐art energy harvesters and wireless power transfer (WPT) schemes. In particular, WPT has great potential to eliminate the percutaneous wires and overcome frequent battery removal. Here, the fundamentals, power transfer efficiency, antenna design and miniaturization, and operating frequencies in various WPT schemes are presented. Moreover, the power loss attenuation and bio‐safety standard (specific absorption rate) for implants are also considered in WPT design envelope. In addition, wireless data transmission of implantable devices from external to internal milieu (and vice versa) along with different modulation and demodulation techniques are investigated. The last advanced power solutions for cIMDs in in‐vivo and in vitro research are illustrated throughout. Finally, specifications and future potential of WPT systems in cIMDs are highlighted.

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A 4-Plate Compact Capacitive Coupler Design and LCL-Compensated Topology for Capacitive Power Transfer in Electric Vehicle Charging Applications

Cited by 244 publications

References 20 publications

A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

An Overview of Resonant Circuits for Wireless Power Transfer

Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices

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