Abstract
The fundamental frequency approximation (FFA) for power transfer is commonly used to linearize a wireless power transfer (WPT) system which is equipped with non-linear switching converters such as a Class D inverter and rectifier. However, the FFA for power transfer disables us to analyze harmonics in a WPT system. The system characteristics only at the fundamental frequency can be analyzed with the FFA.In this paper, a new FFA for induced voltages is proposed so that analytical expressions of differential-mode voltage and current harmonics in a loosely-coupled series-resonant WPT system can be derived. Fourier series representations of the coil currents, inverter-output voltage, and rectifier-input voltage are derived and verified experimentally.
| Original language | American English |
|---|---|
| Journal | Proceedings of the 2019 IEEE International Symposium on Electromagnetic Compatibility, Signal and Power Integrity (2019, New Orleans, LA) |
| DOIs | |
| State | Published - Jul 26 2019 |
Keywords
- Equivalent Circuit Model
- Fourier Series Representation
- Fundamental Frequency Approximation
- Linearization
- Wireless Power Transfer
Disciplines
- Electromagnetics and Photonics
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