Analysis and validation of novel inverter and LCC‑S topology‑based WPT system

Hong Zhou; Haitang Liu; Qijun Deng; Li Fang

Analysis and validation of novel inverter and LCC‑S topology‑based WPT system

Vol. 22, No. 3, pp. 503-512, Mar. 2022

10.1007/s43236-021-00339-0

AC source inverter

Fourier transform

LCC-S topology

Wireless power transfer (WPT)

Abstract

Wireless power transfer (WPT) technology has been widely researched and employed due to its advantages when compared with conventional cable-connected power transmission in terms of convenience, flexibility, security, and so on. In common wireless power transfer systems, DC sources, such as batteries and AC–DC modules, are frequently utilized in the front end of the inverters to generate a relatively high frequency circuit driving voltage. The strategy of directly arranging inverters behind AC sources is feasible by replacing a single NMOS with a pair of back-to-back placed switches that can tolerate both forward and reverse voltage. This novel inverter structure is systematically explored from the perspectives of the time domain and the frequency domain, which demonstrates the convenience and feasibility of the proposed structure. Due to the canceling of the front-end rectifier, the complexity of the system hardware is significantly reduced. In addition, when taking the constant current output feature into account, the LCC-S topology is comprehensively investigated and properly applied. Finally, a laboratory platform is constructed and experiments are conducted to verify the effectiveness of the proposed structure. Furthermore, experiment results show that there is only a slight transfer efficiency decrease when compared with the commonly adopted scheme containing an extra diode rectifier at the transmitting side.

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Cite this article

[IEEE Style]

H. Zhou, H. Liu, Q. Deng, L. Fang, "Analysis and validation of novel inverter and LCC‑S topology‑based WPT system," Journal of Power Electronics, vol. 22, no. 3, pp. 503-512, 2022. DOI: 10.1007/s43236-021-00339-0.

[ACM Style]

Hong Zhou, Haitang Liu, Qijun Deng, and Li Fang. 2022. Analysis and validation of novel inverter and LCC‑S topology‑based WPT system. Journal of Power Electronics, 22, 3, (2022), 503-512. DOI: 10.1007/s43236-021-00339-0.