Research on output characteristics of wireless power transmission power source based on transforming network

• Published in: Journal of engineering (Stevenage, England) Vol. 2019; no. 16; pp. 2890 - 2892
• Main Authors: Liu, WenRui, Lin, Lingyan, Tian, Muqin, Xu, Chunyu, Zhang, Wenjie
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.03.2019; Wiley
• Subjects: circuit topologies; current stability; front stage power supply; inductive power transmission; inverter output filtering; invertors; LC circuits; LCC transform network circuit model; LCL transform network circuit model; LLC network topologies; network components; output characteristics; output voltage stability; parameter calculation; parameter optimisation design; post-stage circuit; power converter network; rear stage circuit; simulation analysis; specific power transmission requirements; The 14th IET International Conference on AC and DC Power Transmission (ACDC 2018); transforming network; transmission characteristics; wireless power transfer system; wireless power transmission power source; wireless power transmission system; rear stage circuit; transmission characteristics; power converter network; inverter output filtering; invertors; post-stage circuit; LC circuits; front stage power supply; output voltage stability; parameter optimisation design; parameter calculation; inductive power transmission; circuit topologies; LCC transform network circuit model; wireless power transmission system; current stability; output characteristics; network components; wireless power transfer system; wireless power transmission power source; LLC network topologies; transforming network; LCL transform network circuit model; specific power transmission requirements; simulation analysis
• ISSN: 2051-3305; 2051-3305
• DOI: 10.1049/joe.2018.8916

In the wireless power transfer system, the front stage power supply is used to efficiently transfer power to the post-stage circuit. As a bridge connecting the front stage power supply and the rear stage circuit of the wireless power transmission system, power converter network is generally placed behind the inverter so as to achieve output filtering of inverter and stability of output voltage and current. This paper analyses the LCC (inductance-capacitance-capacitance) and LCL (inductance-capacitance-inductance) transform network circuit model, and transmission characteristics of LCC and LCL conversion networks are analysed and compared based on two different circuit topologies. By means of parameter calculation, simulation analysis, and parameter optimisation design, it is concluded that both LCC and LCL networks have different characteristics. The results show that for both LCC and LCL network topologies, when the parameters of network components satisfy certain conditions, they can relatively achieve stable voltage or current output within a certain load range to meet the specific power transmission requirements.