Abstract
Transmitting efficiency is one of the most important characteristics in dynamic wireless power transfer for electric vehicles. In this paper, a simple and efficient topology for a transmitting system called the DC bus system is introduced.Its simplicity maximizes the potential transmitting efficiency. Moreover, a receiving circuit topology and a maximum efficiency control, which is a method to maximize the transmitting efficiency by controlling the secondary voltage, are proposed. A real-time coupling coefficient estimation method is necessary to calculate the secondary voltage command for the control. A simulation and experimental evaluation of the maximum efficiency control was performed using an experimental setup. The results indicate that it provides a large improvement in efficiency and its implementation in a real dynamic power transfer system for electric vehicles is feasible.
| Original language | English |
|---|---|
| Pages (from-to) | 425-432 |
| Number of pages | 8 |
| Journal | IEEJ Transactions on Industry Applications |
| Volume | 136 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jan 2016 |
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Keywords
- Coupling coefficient estimation
- Dynamic wireless power transfer
- Electric vehicle
- Magnetic resonance coupling
- Maximum efficiency control