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Frequent questions

Why is a one-metre gap hard?: Coupling falls with distance. At 1 m, k is about 0.06–0.26 (simulated / geometry). Tank reactive power scales roughly as 1/k. A metre is not the same problem as 10–20 cm. For a specific question, write to research@nwpt.pt.
What is the coupling coefficient of the 5 kW link?: 5 kW research link: coupling 0.117 with the relay and 0.037 direct (simulated). Air gap 1.0 m. For a specific question, write to research@nwpt.pt.
How large is the controlled zone?: A 1 m high-power link needs a controlled zone of several metres. The 100 kW concept states a 3.3 m radius (simulated); 1 MW states 6.3 m (simulated). This assistant does not give installation safety advice. For a specific question, write to research@nwpt.pt.
What is the status of the 100 kW system?: The 100 kW system is studied (simulated): 4 × 25 kW, 1.0 m, 85 kHz, 98.42 % coil-to-coil (simulated). The 1 MW system is studied, at 10 kHz. Neither is built. For a specific question, write to research@nwpt.pt.