Research On The Application Of Power Line Communication To Inverters In Parallel Operation

With the rapid development of information technology, more and more attention is paid to the digitalization and modularization of the Inverter power system. The power line communication technology is widely used because the information is exchanged through the electrical wire by this technology.The Power Line Communication module is designed in this thesis. The application of PLC technology in parallel inverters system is researched, the configuration of system and function of every module is designed, and the experimental results are given.According to the Power Line Communication technology, inverters exchange the information with each other based on the low voltage AC bus, and choose following bypass or tracking each other by strategy. This scheme can achieve the wireless digital lock-loop, and avoid the control line among the inverters.An approach of monitoring technology based on Power Line Communication is proposed. The PC which monitors the inverters array exchanges the information with it on power line by means of Power Line Communication. As a result, there is no communication cable between the two parts, and the monitoring system is optimized.The pattern system is designed and made; the experimental waveforms in every state are given. The experiment results verify the feasibility and practicability of the above method.