Solar photovoltaic inverter for high-rise building

Abstract

The invention belongs to the field of inverters, and particularly relates to a solar photovoltaic inverter for a high-rise building, which comprises a case, a string type inverter main body and a plurality of components are mounted in the case, the components are connected in series with the string type inverter main body, a switch mechanism is arranged on each component, a temperature measuring box is mounted on the outer side of the case, and a temperature sensor is mounted on the temperature measuring box. A bimetallic strip is installed in the temperature measuring box and movably connected with the switching mechanism through the transmission mechanism, the bimetallic strip drives the sliding plate and the insertion plate to move after being affected by the low temperature to deform, the insertion plate pulls the rotating plate to rotate through the flexible plate, after the rotating plate rotates, circuits of part of assemblies are disconnected, and the lower the external temperature is, the larger the bimetallic strip deforms, and the lower the external temperature is, the larger the bimetallic strip deforms. The longer the moving distance of the sliding plate and the plugboard is, the larger the amplitude of driving the rotating plate to rotate is, and the function of automatically adjusting the number of assemblies connected in series in the circuit along with the change of the external temperature is achieved.

Description

technical field [0001] The invention belongs to the field of inverters, in particular to a solar photovoltaic inverter for high-rise buildings. Background technique [0002] The solar photovoltaic power generation system includes solar cells, storage batteries, charge and discharge controllers, solar photovoltaic inverters, combiner boxes and other equipment. Among them, the solar cells generate direct current in sunlight, and the storage in the storage battery is also direct current, but the direct current power supply system There are significant limitations, therefore, by installing an inverter to convert direct current to alternating current. [0003] A Chinese patent with the publication number CN111969863B discloses a photovoltaic inverter for solar power generation, including an inverter main body, a load-bearing structure for loading and protecting the inverter main body, and a heat dissipation device for assisting heat dissipation for the loaded inverter main body. ...

AI Technical Summary

Problems solved by technology

When working, the working environment temperature of the photovoltaic inverter is detected through the bimetal sheet. The bimetal sheet is a material that automatically deforms and can be automatically reset as the temperature changes; in the initial state, all components are connected in series in the string inverter. In the circuit of the main body of the transformer, the components are connected to the circuit through the switch mechanism; when the temperature is too low, the bimetal sheet is deformed, and the switch mechanism on some components is driven by the transmission mechanism to turn off the switches of these components. When the temperature is too low, some components are automatically disconnected to reduce the number of components connected in series in the circuit, which improves the situation that when the temperature is too low, the voltage of the photovoltaic inverter exceeds the upper limit, causing the inverter to stop

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