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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhu, Xirui Jin, Ke Chen, Yuezhe |
| Abstract | Microwave power transmission (MPT) has been one of the most promising systems in the far-field wireless power transmission system. In MPT system, the harmonic energy generated by conventional diode rectifying circuit has great impact on the overall efficiency. Moreover, the passive impedance network leads to power reflection, which is the other factor leading to the overall efficiency decline. In this study, a 10 W output 100 MHz two-stage adaptive impedance-matching rectifying circuit is proposed which can make input impedance constant. About 100 MHz belongs to the band of radio frequency (RF) and the conception of microwave. The first-stage rectifier is modelled mathematically, which plays an essential role in constructing the initial input impedance and designing the control method of second-stage converter. By adjusting the duty cycle of the second-stage converter, the impedance of the whole rectifier realises 50 Ω under various input and the output conditions by means of simulations and experiments. The simulation and experimental results are shown to verify the effectiveness of the proposed RF to direct current converter and its control method. The overall efficiency with full load is up to nearly 65%. |
| Starting Page | 2353 |
| Ending Page | 2360 |
| Page Count | 8 |
| ISSN | 17554535 |
| Volume Number | 12 |
| e-ISSN | 17554543 |
| Issue Number | Issue 9, Aug (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/12/9 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.6323 |
| Journal | IET Power Electronics |
| Publisher Date | 2019-06-06 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Control Method Design Control of Electric Power System Control System Analysis Control System Synthesis Diode Rectifying Circuit Far-field Wireless Power Transmission System First-stage Rectifier Frequency 100.0 MHz Harmonic Energy Impedance Matching Inductive Power Transmission Initial Input Impedance Mathematical Analysis Mathematical Model Microwave Power Transfer System Microwave Power Transmission MPT System Passive Impedance Network Power 10.0 W Power Electronics Power Reflection Power Supply Power System Control Power Transmission Control Radio Frequency Band Rectifier Rectifying Circuit Second-stage Converter Supervisory Circuit Synthesis Method Two-stage Adaptive Impedance-matching Rectifying Circuit |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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