Photovoltaic converter control method and device and optical storage air conditioning system

Abstract

The invention discloses a photovoltaic converter control method and device and an optical storage air conditioning system. The method comprises the following steps: acquiring actual power output by aphotovoltaic converter; determining a reference operation parameter of the photovoltaic converter according to the actual power, and controlling the photovoltaic converter to operate according to thereference operation parameter; and according to the temperature of the power semiconductor in the photovoltaic converter and preset at least two stages of operating parameters, adjusting the operatingparameters of the photovoltaic converter so as to determine the optimal operating parameters of the photovoltaic converter in the current environment. According to the invention, based on the presetat least two stages of operation parameters, the self-adaptive control of the operation parameters of the photovoltaic converter is realized according to the actual power of the photovoltaic converterand the temperature of the power semiconductor in the photovoltaic converter, and the operation parameters of the photovoltaic converter are automatically optimized, so that the all-weather full-power section achieves better power generation quality; and the use requirements of power grids and local loads are met.

Description

technical field [0001] The present invention relates to the technical field of photovoltaic control, in particular, to a photovoltaic converter control method and device, and a photovoltaic storage air conditioning system. Background technique [0002] The existing solar storage air-conditioning system has been widely used, and it is a good application system for collecting and absorbing new energy locally. When the solar-storage air-conditioning system is applied when the sun rises in the morning, the sun sets in the evening, it is rainy, and the solar panels are blocked by dark clouds, the power generation of the photovoltaic power generation system is small. Rated power design, the optimal performance can only be exerted at the rated power, so the power quality generated at lower power is relatively poor, and the current harmonics are large, commonly known as "garbage power", which will seriously affect the power quality of the grid and local loads. It will cause a bad e...

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Problems solved by technology

[0004] Embodiments of the present invention provide a photovoltaic converter control method, device, and solar-storage air-conditioning system to at least solve the problem of poor power generation quality in the prior art when photovoltaic power generation is small

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