Challenges in High-Power Railway Applications using Inductive Power Transmission

2016 ◽  
Author(s):  
S. Streit ◽  
J. Winter
Keyword(s):  
High Power ◽  
Power Transmission ◽  
Inductive Power Transmission ◽  
Inductive Power

scholarly journals Inductive Power Transmission for Wearable Textile Heater using Series-None Topology

Electronics ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 431
Author(s):  
Hyeokjin Kwon ◽  
Kang-Ho Lee ◽  
Byunghun Lee
Keyword(s):  
High Temperature ◽  
Power Amplifier ◽  
High Power ◽  
Electrical Resistance ◽  
Power Transmission ◽  
Supply Voltage ◽  
Power Transfer Efficiency ◽  
Resonant Capacitor ◽  
Inductive Power Transmission ◽  
Inductive Power

In this paper, an inductive-power-transmission (IPT) system for a wearable textile heater is proposed to comfortably provide heating to a user’s body. The conductive thread, which has high electrical resistance, was sewn into a receiver (Rx) coil on clothing to generate high temperature with a low current. The proposed wearable heaters are completely washable thanks to their nonmetallic materials, other than conductive threads in the clothing. We introduced series-none (SN) topology to eliminate a resonant capacitor in the wearable textile heater. A single resonant capacitor in a transmitter (Tx) in SN mode was implemented to resonate both Tx and Rx, resulting in increased power delivered to the load (PDL) while maintaining high-power transfer efficiency (PTE), comparable with conventional series-series (SS) topology. When the supply voltage of the power amplifier was 7 V, while the PTE of the SS and SN modes was 85.2% and 75.8%, respectively, the PDL of the SS and SN modes was 2.74 and 4.6 W, respectively.

scholarly journals Series-Series/Series Compensated Inductive Power Transmission System with Symmetrical Half-Bridge Resonant Converter: Design, Analysis, and Experimental Assessment

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2268 ◽  
Author(s):  
Jianfeng Hong ◽  
Mingjie Guan ◽  
Zaifa Lin ◽  
Qiu Fang ◽  
Wei Wu ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Power Transmission ◽  
Low Frequency ◽  
Resonant Converter ◽  
Inductive Power Transfer ◽  
Leakage Inductance ◽  
Analysis And Design ◽  
Converter Design ◽  
Inductive Power Transmission ◽  
Inductive Power

In order to compensate the large leakage inductance and improve the power transmission capacity, capacitors are widely used in inductive power transfer (IPT) systems, which results in high voltage or current stresses in the resonant tanks and limits higher volt-ampere (VA) rating of the transfer power, especially in medium and low frequency applications. This paper presents a symmetrical half-bridge resonant converter (SHRC) for series-series/series compensated IPT systems with detailed analysis and design. It operates at a relatively low frequency of 12.5 kHz, suitable for IGBT applications. The theoretical analysis shows that, compared with full-bridge resonant converter (FRC) for IPT, the symmetrical half-bridge resonant converter achieves a higher efficiency. Simulation and a prototype of 1500 W power output were built to verify the theoretical analysis. The experimental results show that the power loss of SHRC is 39.7 W while that of FRC is 79.4 W, which is consistent with the theoretical analysis. The global efficiency of the IPT based on the proposed converter is 91.6%.

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