Application of Magnetic Coupling Resonance Wireless Power Transfer in Power System

doi:10.12096/j.2096-4528.pgt.20118

Abstract

Abstract:

Wireless power transfer (WPT) can transmit electric wirelessly. It performs better under some paticular circumstances compared with the traditonal transmission mode. In the trend of building a smarter power system, the vast majority power supply problem of these smart equipments can be solved by using magnetic coupling resonant WPT. This paper introduced several possible application of magnetic coupling resonant WPT in power system, including the electric vehicle (EV) wireless charging system, substation power inspection robot wireless charging system and unmanned aerial vehicle (UAV) wireless charging system. Starting from the structure of the system, this paper compared and analyzed the recent research results, and drew conclusions finally. There still exists some issues to be settled in terms of charging efficiency, high-power charging, system reliability and double-direction WPT. At the end of this paper, several suggestions were proposed.

Key words: wireless power transfer (WPT), power system, coupled magnetic resonance

CLC Number:

TK 01

Bingwei JIANG, Bin WEI, Hao HE, Cheng JIANG, Xiaokang WU. Application of Magnetic Coupling Resonance Wireless Power Transfer in Power System[J]. Power Generation Technology, 2022, 43(1): 32-43.

Figures/Tables 18

Fig. 1 Circle, rectangular and double-D coil of WPT

Fig. 2 Structure of DDQ coil

Tab. 1 Output voltage and current characteristics of different resonant topologies

接收端谐振拓扑	输出电压	输出电流
串联	$π U R L 22 ω M$	$22 U π ω M$
并联	$π U L 2 22 M$	$22 U L 2 π M R L$

Tab. 1 Output voltage and current characteristics of different resonant topologies

接收端谐振拓扑	输出电压	输出电流
串联	$π U R L 22 ω M$	$22 U π ω M$
并联	$π U L 2 22 M$	$22 U L 2 π M R L$

Fig. 3 Resonant topology of WPT

Fig. 4 Model of EVWCT

Fig. 5 Intensity diagram of magnetic field and electric field of human organs in wireless charging vehicle

Fig. 6 Circuit topology of wireless V2G

Fig. 7 Aerial view of wireless charging system

Fig. 8 Circuit topology of wireless charging system for electric inspection robot

Fig. 9 Double layer matrix coil

Fig. 10 Circuit topology of resonant reactive shielding coil

Fig. 11 Topology of symmetrical split inductor capacitor circuit

Fig. 12 Substation inspection robot with double receiving coils

Fig. 13 Schematic diagram of wireless charging system for substation inspection robot

Fig. 14 Field diagram of wireless charging system of substation patrol robot

Fig. 15 Coils layout of UAV

Fig. 16 Magnetic circuit of coupling device of wireless charging platform

Fig. 17 Wireless charging platform for UAV arranged at the top of tower

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