Electrical engineering

Physics

Channel (broadcasting)

Phase-shift keying

Wireless

Bit error rate

Engineering

Demodulation

Power (physics)

Frequency-shift keying

Renewable energy

Electronic engineering

Amplitude-shift keying

Data transmission

Quantum mechanics

Maximum power transfer theorem

Telecommunications

IEEE Journal on Emerging and Selected Topics in Circuits and Systems

Marine renewable energy (i.e., wave, tidal or ocean current, thermal gradient, and salinity gradient), can revolutionize ocean observing capabilities and marine power supply method. Under the marine environment, as the conductive feature of seawater, it has big challenge for wireless power and signal transfer under marine environment. To deal with this issue, this paper provides an undersea wireless power and data transfer system with the shared channel which powered by renewable system. The power and data could be transferred with the same channel based on the time division multiplexing theory. In one switching cycle, the power is transferred in the first half switching cycle and the data is transferred in the second half switching cycle. The data is modulated by frequency-shift keying (FSK) modulation method. The frequency for power transfer is set as 240 kHz. With the FSK modulation method, the two signal carriers' frequencies are respectively set 10 MHz and 2 MHz. The data could be completely transferred with the high bandwidth. The glass tank experimental platform is constructed with the 35‰ salinity water. The simulated and experimental results verify the theory analysis and the calculation very well.

Undersea Wireless Power and Data Transfer System With Shared Channel Powered by Marine Renewable Energy System