Photovoltaic system and communication method therefor
AssigneeSungrow Power Supply Co., Ltd.
InventorsYu Yang, Yanfei Yu, Jun Xu, Zongjun Yang, Xinyu Wang
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Abstract
A photovoltaic system and a communication method therefor. The communication method includes: each slave sends a report signal to a host, and monitors a response signal of the host; and if the at least one slave receives the response signal, the corresponding slave executes a corresponding action on the basis of the response signal. Therefore, communication between the host and each slave is achieved in a mode that each slave actively sends the report signal, the host is prevented from adopting a roll call query mode, and occupation of bus resources by the host is reduced.
Claims15
A communication method, applied to a photovoltaic system,
- wherein in the photovoltaic system, a master is communicatively connected to each of slaves, and photovoltaic modules output electric energy via the slaves respectively;
- wherein the communication method comprises:
- sending, by each of the slaves, a report signal to the master and monitoring, by the slave, a reply signal from the master, wherein the reply signal is a simple signal indicating success/failure, or a combined signal composed of the report signal and the simple signal, and the response signal excludes communication address information of the slaves;
- and
- performing an action by the slave based on the reply signal in response to successfully receiving the reply signal by the slave, comprising:
- remaining the slave to be on when the reply signal indicates success;
- and shutting down the slave when the reply signal indicates failure;
- and
- wherein the sending, by each of the slaves, the report signal to the master comprises:
- sending, by the slaves, respective report signals to the master one by one in a report order in a preset list.
Dependencies are inferred from the claim text.