Photovoltaic water pump system capable of increasing daily water yield

Abstract

The invention provides a photovoltaic water pump system capable of increasing the daily water yield. The problem that existing photovoltaic water pump systems are low in daily water yield is solved. The system comprises a photovoltaic cell panel array, a controller, a pump, a water outlet pipeline, a timing starting valve, a branch pipeline and a bypass pipeline valve. The timing starting valve ismounted on the water outlet pipeline. One end of the branch pipeline communicates with an outlet of the pump. The bypass pipeline valve is mounted on the branch pipeline. A pipeline pressure coefficient K1 of the branch pipeline is greater than a pipeline pressure coefficient K2 of the water outlet pipeline. The timing starting valve and the branch pipeline valve are electrically connected with the controller. The controller controls the timing starting valve and the branch pipeline valve to open and close according to the regional light intensity distribution characteristics, thus, the operation working-condition point of the pump is changed, the actual operation lift of the system is increased, the daily water yield is increased, the solar energy utilization rate is increased, and the system overall efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic water pumping, in particular to a photovoltaic water pump system capable of increasing daily water output. Background technique [0002] The continuous exploitation and use of traditional energy sources such as oil and coal has led to an energy crisis in which non-renewable energy sources have been continuously reduced, and has produced a series of environmental pollution and greenhouse effects. Therefore, new energy sources such as solar energy and wind energy are widely used, and they are inexhaustible and inexhaustible. The working principle of the photovoltaic water pump system is to use the voltaic effect generated by photovoltaics to directly convert solar energy into electrical energy, and then drive the motor through the controller to drive the pump to pump water. The photovoltaic water pump system works at sunrise and rests at sunset, and is unattended. It has the advantages of low ...

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Problems solved by technology

[0003] In actual operation, the light intensity in the morning and evening is low, and the electric power output by the controller is low at this time, resulting in a decrease in the speed of the pump operation. Combined with the characteristics of the pump outlet pipeline, the head of the pump operating point is low at this time , cannot reach the actual head required by the system, so the system cannot start pumping

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