Abstract:
Within this paper, a PLC system that takes advantage of the loop resonance of an entire
DC-PV string configured as a circular signal path is developed and implemented. Low cost
and extremely simple transceivers intended to be installed within each PV module of a string
have been designed and successfully tested. In addition, an anti-saturation coil has been conceived
to avoid saturation of the core when the entire DC current of the string flows through it.
Bi-directional half-duplex communication was successfully executed with up to a 1 MHz carrier
frequency (150 kbps bitrate), using a simple ASK modulation scheme. The transmission and reception
performance are presented, along with the overall system cost in comparison to the previous literature.
