CN CN113623166A
The invention discloses a control method of a multi-pump parallel photovoltaic pumping system, an inverter and the photovoltaic pumping system. The invention discloses the control method of the multi-pump parallel photovoltaic pumping system. The control method of the multi-pump parallel photovoltaic pumping system comprises the steps of adjusting the running frequency of a host water pump in a maximum power tracking mode when a host inverter is powered on and runs; when the operation frequency of the host water pump is greater than or equal to a first preset frequency, sending an operation instruction carrying a slave operation frequency target value to one slave inverter, and switching to a normal pressure method control mode; when the operation frequency of the host water pump is smaller than or equal to a second preset frequency, sending a stop instruction to one slave inverter, sending an instruction carrying a slave operation frequency target value to the remaining slave inverters, and switching to a normal pressure method control mode; and when the slave water pump reaches the slave operation frequency target value, switching the host inverter to the maximum power tracking mode, and synchronously adjusting the operation frequency of the slave water pump. Compared with the prior art, the control method of the multi-pump parallel photovoltaic pumping system has the advantages that the requirement on the real-time communication rate of a master-slave communication system is greatly reduced, and the requirement can be met by adopting a simple, low-cost and easy-to-implement communication mode.
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