FIGURE 6 Power Relay Satellite The PRS is in geosynchronous orbit (GEO), 22,300 miles above and concentric with the equator. A PRS system can provide a transmission link between a renewable energy site and a power grid to meet electrical power requirements, e.g. Australia to India. In the PRS system, electricity is fed to microwave generators operating at a frequency of 5.8 GHz. The microwave generators are incorporated in a phased-array antenna for transmitting the microwave energy in a controlled beam that is focused onto the microwave reflector in the PRS. The reflector redirects the beam to a receiving antenna on Earth in the desired location, where the microwave beam is directly converted safely and efficiently into electricity. The de output of the receiving antenna is fed to the power grid. The receiving antenna can be located at a preferred location. The PRS is comprised of three, stand-alone subsystems: • Transmitting antenna (transmitter) • Receiving antenna (rectenna) • Relay satellite reflector These subsystems can be designed to interact in an optimal manner to deliver electric power for transmission to distribution grids. The function of the transmitter is to transform the available electrical energy from a renewable and environmentally compatible energy source with high efficiency into a microwave beam with required characteristics needed for transmission through the atmosphere with minimum losses. Conversely, the rectenna is designed to transform the incoming microwave energy into a
RkJQdWJsaXNoZXIy MTU5NjU0Mg==