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Energies 2018, 11(3), 527; https://doi.org/10.3390/en11030527

Dynamic Wireless Power Transfer for Logistic Robots

1
Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
2
Department of Electrical Engineering, National I-lan University, Yilan 206, Taiwan
3
Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
*
Author to whom correspondence should be addressed.
Received: 16 January 2018 / Revised: 26 February 2018 / Accepted: 27 February 2018 / Published: 28 February 2018
(This article belongs to the Special Issue Power Electronics in DC-Microgrid Systems)
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Abstract

The prospect of using robots in warehouses or supply chain processes is increasing due to the growth of the online retail market. This logistic robot is available in the market and uses a battery as energy storage device. However, this battery is large and heavy. Therefore, it needs a long recharging time. Dynamic Wireless Power Transfer (DWPT) can be an alternative to the conventional charging system because of its safety and flexibility that enables in motion charging. DWPT reduces the battery requirement size and capacity. Hence the stored energy can be used effectively for load transportation. A compensation with an inductor and two capacitors in the transmitter side, and a series connected capacitor in the receiver side which is named LCC-S compensation type has the capability to maintain the transmitter current with a fixed frequency operation. It provides less variation of the output voltage in response to the load variation. Moreover, the compensation of the receiver side uses only a single series capacitor which is low-cost. The analysis, modeling, and design procedures are discussed in this paper as well as the hardware implementation and verification of a 1.5 kW maximum power DWPT. The experiment shows the capability of the proposed system and shows maximum efficiency can reach 91.02%. View Full-Text
Keywords: wireless power transfer; in-motion charging; LCC-S compensation; logistic robots wireless power transfer; in-motion charging; LCC-S compensation; logistic robots
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Tampubolon, M.; Pamungkas, L.; Chiu, H.-J.; Liu, Y.-C.; Hsieh, Y.-C. Dynamic Wireless Power Transfer for Logistic Robots. Energies 2018, 11, 527.

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