Proposal for Wireless Power Distribution System with Capacitive Coupling Using One-Pulse Switching Active Capacitor

Funato, Hirohito; Chiku, Yuki; Harakawa, K.

doi:10.1541/ieejias.132.27

Cited by 12 publications

(14 citation statements)

References 6 publications

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“…The OPSAC with a DC capacitor is called an improved OPSAC (I-OPSAC). The design procedure and capacitor voltage control of a capacitive power transfer system with a single I-OPSAC are described in (17) In this paper, the design procedure and capacitor voltage control are explained using a cascaded I-OPSAC (C-I-OPSAC) in the following chapter. , it is observed that there is still nonconduction period, even when connecting the OPSAC.…”

Section: Fundamental Operation With a Single Opsacmentioning

confidence: 99%

“…One of the major advantages of an OPSAC is stable operation without any feedback loops including DC capacitor voltage control even if the DC voltage source is replaced by a capacitor in the OPSAC. An improved OPSAC (I-OPSAC) is proposed in (17) where the DC voltage source is removed from the OPSAC. The other major advantage is the easy-to-realize series connection.…”

Section: Introductionmentioning

confidence: 99%

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Capacitive Power Transfer System using a Cascaded Improved One-Pulse Switching Active Capacitor

Funato

Chiku

2015

IEEJ Journal IA

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Recently, contactless electric power distribution has become a very attractive method for providing electric power to mobile equipment such as mobile phones or electric vehicles. Inductive power transfer (IPT) with inductive coupling is currently the most popular way to realize contactless electric power distribution. Another way is capacitive power transfer (CPT) with capacitive coupling. In the past, several studies on CPT have effecively used series LC resonance to enhance the transfer power. However, LC resonance is sensitive to parameter changes, which may be caused by the contact conditions of the capacitive coupling.The authors propose a new power converter suitable for a CPT system that uses a novel improved one-pulse switching active capacitor (I-OPSAC) to enhance power transfer. The proposed system improves the power transfer efficiency without LC resonance and is robust to parameter change. One of the major advantages of I-OPSAC is stable operation without any feedback loops including DC capacitor voltage control. The other major advantage is the easy-to-realize series connection. The paper reports the control scheme and detailed operational characteristics of a cascaded I-OPSAC (C-I-OPSAC), in addition to the simulation and experimental results. The results verified that a C-I-OPSAC enhances transfer power while maintaining stable operation without a feedback loop.

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Section: Fundamental Operation With a Single Opsacmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Capacitive Power Transfer System using a Cascaded Improved One-Pulse Switching Active Capacitor

Funato

Chiku

2015

IEEJ Journal IA

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“…Electric vehicle charging pile design is the key problem of power transmission optimization control problem, in recent years, pile inductive power transmission control technology in the rapid development of electric vehicle charging, charging pile of scholars on the power transfer efficiency is studied, the power coupling coefficient and transmission efficiency of factors such as transmission and optimization of power control and charging pile closely related to the traditional method [2] , it can optimize the transmission control methods include fuzzy PID control method for electric vehicle charging power, particle swarm optimization of power transmission control method, and adaptive weighted power allocation optimization control method [3,4] , the coupling charging pile induction power control of electromagnetic transformer is designed of coil charging pile, charging pile improve power output efficiency, thereby reducing the charging time, and it has obtained better charging pile design results. Among them, the reference [5] analyzed the transmission efficiency optimization of a primary coil and a secondary coil without the alignment of the electric vehicle charging pile, intelligent charging pile optimization design of embedded control system, using an ultra low power ARM processor Cortex-M0 as the kernel, electromagnetic coupling control, improve the output power gain however, this method is not high under the output gain of the interference of electromagnetic radiation of the larger; the reference [6] analyzed the solar and wind power and influence on the charging system into the car, analyzed the electric vehicle induction power response of transmission, wireless charging of the charging pile technology is studied. But the system prospect in engineering application is not clear.…”

Section: Introductionmentioning

confidence: 99%

Optimization design of electric vehicle charging pile based on coil magnetic resonance coupling control

Xu¹,

Lu²,

Ye³

et al. 2017

Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017)

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Abstract:The charging pile is influenced by electromagnetic coupling interference factors of primary coil and secondary coil of the electric vehicle charging, resulting in excessive demand on the parking position, in order to solve this problem, a power transmission optimization control technique of electric car charging pile is proposed based on coil magnetic resonance coupling. The construction of electric vehicle coupling coil charging pile is taken with spiral planar coil, the half bridge LLC resonant inverter is designed as the charging inverter control unit, the resonant frequency, mutual inductance, resistance and other parameters are analyzed for charging system for electric energy transmission efficiency, and as a basis for parameter optimization design of charging pile coil series, coupled control coil magnetic resonance is taken near resonance, the electricity charging pile optimization design of transmission system is realized. The test results show that using the method of design of electric vehicle charging pile, it has high efficiency of power transmission, the stable output voltage is achieved in a large load range, output power has high gain.

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“…Some applications have been implemented, such as seafloor geodetic observing using robots [1], power feeding to electrical big-size car [2] and mobile phones. Since wireless power transfer is essential technology to reduce heavy batteries in modern portable devices, then, a lot of studies are progressed [1][2][3][4][5][6][7][8][9]. There are two kind of system which uses coupled resonance such as capacitive [3] and inductive.…”

Section: Introductionmentioning

confidence: 99%

“…Since wireless power transfer is essential technology to reduce heavy batteries in modern portable devices, then, a lot of studies are progressed [1][2][3][4][5][6][7][8][9]. There are two kind of system which uses coupled resonance such as capacitive [3] and inductive. Inductive coupling is well studied, their equivalent circuit [4], efficiency [5], and required conditions [6] are reported.…”

Section: Introductionmentioning

confidence: 99%

A new configuration of magnetic coupled power transfer using parallel line feeder

Higashino

Okada

et al. 2013

2013 IEEE Wireless Power Transfer (WPT)

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This paper newly proposes a configuration of magnetic coupling in wireless power transform using parallel line power feeder. Previous researches mentioned that coil design and optimization of circuit parameters are necessary for strong magnetic coupled resonance. Then, these constraints prevent expansion of coverage area of wireless power transfer to electric portable devices, and electric vehicles. In order to make breakthrough against these limitations, this paper introduces parallel line as a feeder. The frequency of the electromagnetic wave is selected at 13.56 [MHz] in high frequency (HF) band, which is suitable for strong magnetic coupled resonance. Fundamental characteristics are evaluated by using equivalent circuits which are referred to the previous works. Theoretical analysis asserts that impedance transform is necessary in a power source and load circuits. Computer simulation evaluates a mutual inductance between primary and secondary coils, and optimum value of load resistance is clarified. Finally, input impedance and Sparameter are evaluated when power source circuit and feeder circuit are magnetic coupled resonance, these results imply that enhancement of power transfer efficiency is a further study.

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Proposal for Wireless Power Distribution System with Capacitive Coupling Using One-Pulse Switching Active Capacitor

Cited by 12 publications

References 6 publications

Capacitive Power Transfer System using a Cascaded Improved One-Pulse Switching Active Capacitor

Capacitive Power Transfer System using a Cascaded Improved One-Pulse Switching Active Capacitor

Optimization design of electric vehicle charging pile based on coil magnetic resonance coupling control

A new configuration of magnetic coupled power transfer using parallel line feeder

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