EMI reduction technology in 85 kHz band 44 kW wireless power transfer system for rapid contactless charging of electric bus

Shijo, Tetsu; Ogawa, Kensuke; Suzuki, Masatoshi; Kanekiyo, Yasuhiro; Ishida, M.; Obayashi, Shuichi

doi:10.1109/ecce.2016.7855077

Cited by 54 publications

(19 citation statements)

References 9 publications

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“…These could be classified as series-series, parallel-parallel, series-parallel and parallel-series compensation. As many authors have already presented [7][8][9], the series-series topology (see Figure 2) provides us with numerous important benefits, particularly for battery charging, so it is usually used for this purpose. Here, the parameters R1 and R2 represent the equivalent series resistances; L1 and L2 introduce self-inductances; M forms the mutual inductance measured between both coils; and ω is the angular frequency of the supply voltage.…”

Section: Energies 2020 13 X For Peer Review 3 Of 16mentioning

confidence: 99%

“…It is known that several configurations [3][4][5][6] of the resonant tank can be used according to the target application. When talking about battery charging in the automotive industry, the series-series compensation topology is the best choice [7][8][9]. In that case, the compensation capacitors are stressed [10] with a relatively high voltage (usually several kilovolts) and, therefore, either a series-parallel connection of individual capacitors or bulky high-end capacitors need to be used.…”

Section: Introductionmentioning

confidence: 99%

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Generalized Design Approach on Industrial Wireless Chargers

et al. 2020

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The paper briefly discusses the most important standards and regulations established for high-power wireless power transfer systems and introduces the main issues concerned with the conceptual design process. It analyses the electromagnetic design of the inductive magnetic coupler and proposes key formulas to optimize its electrical parameters for a particular load. The method applies to both the resistive load and the battery charging. It also suggests basic topologies for conceptual design of power electronics and discusses its proper connection to the grid. The proposed design strategy is verified by experimental laboratory measurement including analyses of the leakage magnetic field.

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Section: Energies 2020 13 X For Peer Review 3 Of 16mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Generalized Design Approach on Industrial Wireless Chargers

et al. 2020

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“…Tests of Shijo et al implemented a standardized 88 kHz frequency band for charging electric buses [54]. When 50 kW electric power is transmitted from the primer coils, 44 kW electric power is measured on the battery side of the electric vehicle.…”

Section: Wireless Chargingmentioning

confidence: 99%

“…The LCC tank filter to the output current of the inverter efficiently allows only fundamental harmonics passage from the primer coils. The compensator circuit input is the output of the phase Figure 8 -Two channels inverse phase wireless power transfer system for charging EVs [54] Figure 9 -Inductive charging circuit [55] system [61]. According to the Technical Information Report, Wi-Fi, DSRC or RFID systems are proposed [62].…”

Section: Wireless Chargingmentioning

confidence: 99%

A Review of Commercial Electric Vehicle Charging Methods

Terzi

Ilhan

Kaymaz

et al. 2020

PROMET

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Electric Vehicles (EVs) are rapidly becoming the forerunners of vehicle technology. First electric vehicles were overlooked because of not having adequate battery capacity and because of low efficiency of their electric motors. Developing semiconductor and battery technologies increased the interest in the EVs. Nevertheless, current batteries still have insufficient capacity. As a result of this, vehicles must be recharged at short distances (approximately 150 km). Due to scheduled departure and arrival times EVs appear to be more suitable for city buses rather than regular automobiles. Thanks to correct charging technology and the availability of renewable energy for electric buses, the cities have less noise and CO2 emissions. The energy consumption of internal combustion engines is higher than of the electric motors. In this paper, studies on the commercial electric vehicle charging methods will be reviewed and the plug-in charging processes will be described in detail. This study strives to answer the questions of how plug-in charging process communication has performed between the EV and Electric Vehicle Supply Equipment (EVSE).

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“…To reduce the leakage EMF, ferrite was used to optimize the magnetic path, and the pulse width of an inverter was adjusted to reduce the harmonics of the EMF [46]. A multimodular WPT system with opposite phase adjacent modules was introduced to cancel the leakage electromagnetic emissions in both an inductive WPT system [47] and a capacitive WPT system [48]. In these structures, the radiated electromagnetic emissions were canceled from each channel.…”

Section: Introductionmentioning

confidence: 99%

Foreign Object Detection for Electric Vehicle Wireless Charging

Xia

Yuan

et al. 2020

Electronics

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Wireless power transfer technology is being widely used in electric vehicle wireless-charging applications, and foreign object detection (FOD) is an important module that is needed to satisfy the transmission and safety requirements. FOD mostly includes two key parts: metal object detection (MOD) and living object detection (LOD), which should be implemented during the charging process. In this paper, equivalent circuit models of a metal object and a living object are proposed, and the FOD methods are reviewed and analyzed within a unified framework based on the proposed FOD models. A comparison of these detection methods and future challenges is also discussed. Based on these analyses, detection methods that employ an additional circuit for detection are recommended for FOD in electric vehicle wireless-charging applications.

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EMI reduction technology in 85 kHz band 44 kW wireless power transfer system for rapid contactless charging of electric bus

Cited by 54 publications

References 9 publications

Generalized Design Approach on Industrial Wireless Chargers

Generalized Design Approach on Industrial Wireless Chargers

A Review of Commercial Electric Vehicle Charging Methods

Foreign Object Detection for Electric Vehicle Wireless Charging

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