Self optimization maximum power point tracing device and method

Abstract

The invention relates to a optimization self-searching maximal power point tracing device and a method, especially relates to a control device and method for solar energy photovoltaic industry electric generating system. The device is made of solar battery square array, control device, multiplier and comparator, the output end of the multiplier is connected with the input end of the current power model, the output end of the current power model is connected with the input end of the comparator, the output end of the comparator is connected to the input end of pulse modifying PWM output controller, the memory power model output end is connected to the input end of the comparator in parallel. The merits of the invention is: it can realize the tracing to the maximal output power point of the solar battery, the working point of the battery can point to the maximal power point always; it uses special maximal power dynamic comparing technology, it also uses special technology in aspect of power calculation, noise filtering. Thus the tracing speed and the accuracy are upgraded greatly.

Description

technical field [0001] The invention relates to a self-optimizing maximum power point tracking device and method, in particular to a control device and method for a solar photovoltaic industry power generation system. Background technique [0002] The solar photovoltaic industry is one of the emerging industries in the 21st century. While the solar photovoltaic power generation system is continuously improving the photoelectric conversion efficiency and service life of solar cells, the development and application of its control device is the most important and critical part of the solar photovoltaic system. The traditional controller controls the number of input arrays of the solar cell square array to meet the charging requirements of the battery, and at the same time supplies power to the AC load through the inverter device. The main technical problems and shortcomings of this technology are that the independent design of components does not have parallel or grid-connecte...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to control the output power of the solar battery square array through feedback, to make the working point of the battery always point to the maximum power point, and this relationship does not change with the light and temperature; Special technologies such as calculation and noise filtering greatly improve the tracking speed and accuracy of the self-optimized maximum power point, etc.

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