Inverter used in low temperature environment and photovoltaic system

Abstract

The invention discloses an inverter used in a low temperature environment, and a photovoltaic system. The inverter comprises a control module, a circuit separator connected with the control module, a power conversion module connected with the circuit separator, a first temperature detection module connected to the control module and used for detecting the temperature of the power conversion module, and a first heating module connected to the control module and used for heating the power conversion module; if the control module is started, the first temperature detection module detects the temperature of the power conversion module, and whether the power conversion module can be normally started and/or normally work is judged according to the detected temperature of the power conversion module; and if the power conversion module is not normally started and/or does not normally work, the first heating module is started. The inverter can be normally started and normally work in the low temperature environment, and can effectively improve the generating efficiency of the photovoltaic system.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic power generation, in particular to an inverter suitable for low-temperature environments and a photovoltaic system using the inverter. Background technique [0002] The solar photovoltaic grid-connected power generation system, that is, the photovoltaic system, is composed of solar panels, photovoltaic grid-connected inverters and step-up transformers. The system uses solar panels to convert solar energy into direct current, and then converts direct current into alternating current through a photovoltaic grid-connected inverter, which is boosted by a step-up transformer and then injected into the urban power grid. Among them, the photovoltaic grid-connected inverter is a bridge connecting solar power to the grid, and an indispensable and important component for users of solar photovoltaic power grid-connected systems. Specifically, the photovoltaic grid-connected inverter includes: a c...

AI Technical Summary

Problems solved by technology

Since the power conversion module in the photovoltaic grid-connected inverter in the prior art is only suitable for normal temperature environment, it is required to be in an environment above 0°C, but in a low temperature environment (such as below 0°C), the photovoltaic grid-connected inverter cannot Start normally, or fail to operate normally after starting, which will seriously affect the power generation efficiency of the solar photovoltaic grid-connected power generation system

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