A 25 kW industrial prototype wireless electric vehicle charger

Bojarski, Mariusz; Asa, Erdem; Colak, Kerim; Czarkowski, Dariusz

doi:10.1109/apec.2016.7468105

Cited by 49 publications

(26 citation statements)

References 15 publications

(12 reference statements)

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“…efficiency 4% [26] 90% [27] 98% [28] 14% [29] 85% [30] 62% [31] Max. distance, m 0.05 [26] 0.3 [27] 7 [ 32] 1000 [33] 3 [ 34] 1600 [35] R tr 4.6 [26] 0.5 [27] 3.5 [32] 916 [33] 6 [ 36] 222 [35] Power transferred mW [26] k W [ 27] k W [ 37] k W [ 33] k W [ 38] k W [ 35] Potentially hazardous Yes Yes Yes Yes Yes Yes Fig. 3.…”

Section: Apt Cpt Ipt Lpt Mrpt Mwptmentioning

confidence: 99%

Limitations of wireless power transfer technologies for mobile robots

2019

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Advances in technology have seen mobile robots becoming a viable solution to many global challenges. A key limitation for tetherless operation, however, is the energy density of batteries. Whilst significant research is being undertaken into new battery technologies, wireless power transfer may be an alternative solution. The majority of the available technologies are not targeted toward the medium power requirements of mobile robots; they are either for low powers (a few Watts) or very large powers (kW). This paper reviews existing wireless power transfer technologies and their applications on mobile robots. The challenges of using these technologies on mobile robots include delivering the power required, system efficiency, human safety, transmission medium, and distance, all of which are analyzed for robots operating in a hazardous environment. The limitations of current wireless power technologies to meet the challenges for mobile robots are discussed and scenarios which current wireless power technologies can be used on mobile robots are presented.

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Section: Apt Cpt Ipt Lpt Mrpt Mwptmentioning

confidence: 99%

Limitations of wireless power transfer technologies for mobile robots

2019

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“…In the field of static wireless charging technology, the research points mainly includes the design of the high-frequent inverter [3,4], the design of the wireless energy transceivers [5], the design of the compensation circuits [6,7], the optimization of the receiving power and efficiency [8,9], the foreign object detection [10,11] and the issue of the electromagnetic field [12]. The multi-phase resonant inverter is proposed to realize the high output power for wireless charging system of EVs in Reference [3] and [4]. The Pareto optimization of inductive power transfer coil with respect to efficiency and area-related power density for EVs is introduced in Reference [5].…”

Section: Introductionmentioning

confidence: 99%

Power Stabilization based on Switching Control of Segmented Transmitting Coils for Multi Loads in Static-Dynamic Hybrid Wireless Charging System at Traffic Lights

et al. 2019

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In order to promote the driving range of the electric vehicles (EVs), decrease the demand for large capacity battery and create more charging opportunities for the EVs, the static-dynamic hybrid wireless charging system is presented to utilize waiting time of traffic lights at intersections to replenish electricity in this paper. Firstly, the topology and principle of the proposed static-dynamic hybrid wireless charging system with short-segmented coils at traffic lights are introduced. Secondly, the general circuit model of the static-dynamic hybrid wireless charging system with multi-coupling between the primary and secondary sides is developed. The design method of the compensation circuit in primary side based on the number and the positions of the energized primary coils is investigated. After analyzing the characteristics of the system varying with the position of the single load, the control conceptions of the energizing mode alternating in primary side and the combination of the primary compensation capacitors are put forward. Then the power stabilization control strategy of the static-dynamic hybrid wireless charging system with multi short-segmented coils and multi loads is proposed. Finally, the theoretical analyses are verified with the experiments.

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“…The equivalent leakage inductance of the ICTs is taken into consideration in the parameter design of the compensation circuit to fix the operation frequency in this paper. The multiphase resonant inverter (MPRI) [7], [19], [20] is a new branch of the inverters for the wireless power transfer system and has great potentialities. The output power can also be controlled without the DC-DC converter in the input side.…”

Section: Introductionmentioning

confidence: 99%

Flexible Power Control for Wireless Power Transmission System With Unfixed Receiver Position

Liu

Huang

Czarkowski³

et al. 2019

IEEE Access

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To improve the stability of receiving power in the wireless power transmission system with unfixed receiving position, a flexible power control strategy without the measurement in secondary side and the wireless communication between primary and secondary sides is proposed. The circuit model of a multiphase resonant inverter (MPRI) with cascaded intercell transformers (ICTs) is developed. The output voltage control strategy of the MPRI is introduced based on the iterative summation method for trigonometric functions. The circuit model of the system is derived to deduce the expressions for the key parameters. Considering the cascaded ICTs and the inductor-capacitor-capacitor (LCC) compensation circuit in the primary side, the design method of the compensation parameters is proposed based on the circuit model of the MPRI. After synthesizing the online monitoring, parameter pre-calculation, prediction of several conditions, and online learning, the flexible power control strategy is put forward for the wireless power transmission system with unfixed receiver position. Without the auxiliary positioning methods, the measurement in the secondary side, or the wireless communication between primary and secondary sides, the recognition of the load access and exit, as well as the power stabilization control after access, are realized. Finally, the theoretical analyses and the control strategy are validated by experiments. INDEX TERMS Wireless power transmission, multiphase resonant inverter, unfixed receiver position, power stabilization, flexible power control.

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A 25 kW industrial prototype wireless electric vehicle charger

Cited by 49 publications

References 15 publications

Limitations of wireless power transfer technologies for mobile robots

Limitations of wireless power transfer technologies for mobile robots

Power Stabilization based on Switching Control of Segmented Transmitting Coils for Multi Loads in Static-Dynamic Hybrid Wireless Charging System at Traffic Lights

Flexible Power Control for Wireless Power Transmission System With Unfixed Receiver Position

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