overview_of_wireless_power_transfer
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| Wireless Power Transfer (WPT) can be implemented in many ways. The most well-known technologies in the sector today are depicted in Figure 1 and can be divided into WPT by acoustic or by electromagnetic means | Wireless Power Transfer (WPT) can be implemented in many ways. The most well-known technologies in the sector today are depicted in Figure 1 and can be divided into WPT by acoustic or by electromagnetic means | ||
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| + | | Figure 1 overview of WPT | | ||
| ====Near-field versus far-field electromagnetic WPT==== | ====Near-field versus far-field electromagnetic WPT==== | ||
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| The inductive coupling technology attains the highest energy transfer efficiency, varying from 70% up to 90%. In the same figure can be seen that the efficiency for magnetic resonant coupling strongly declines to a range of 40-60%. In the near-field technology this WPT method is used for greater distances, going from a few centimetres up to a maximum of 5m. A summary of these near-field methods is given in Figure 3. | The inductive coupling technology attains the highest energy transfer efficiency, varying from 70% up to 90%. In the same figure can be seen that the efficiency for magnetic resonant coupling strongly declines to a range of 40-60%. In the near-field technology this WPT method is used for greater distances, going from a few centimetres up to a maximum of 5m. A summary of these near-field methods is given in Figure 3. | ||
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| - | {{: | + | | Figure 2 efficiency of WPT (Jawad et al., 2017, p. 8) | |
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| + | | Figure 3 Near-field technology specifications | ||
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