An energy-saving inverter aging test device

Abstract

The invention provides an energy-saving ageing testing device of an inverter, and belongs to the technical field of testing of inverters. The device is characterized in that an AC / DC converting circuit is connected to an electric supply grid; a group of inverter ageing testing arrays is connected to the AC / DC converting circuit, or at least two groups of inverter ageing testing arrays are connected in parallel to the AC / DC converting circuit; each group of inverter ageing testing array is formed by connecting two to ten inverter ageing testing units in series and then connecting with an adjustable load in series. Compared with the existing inverter ageing testing device, the device has the advantages that number of times of electricity consumption is decreased, thus power supply devices are greatly saved, and the precious electric energy is prevented from being consumed by a resistor; meanwhile, the environmental pollution is reduced; the device can be applied to the tested inverters, limiting but not being limited to a coal power inverter, a solar / photovoltaic inverter, a wind-powered inverter, a nuclear energy inverter, a vehicle-mounted inverter and other similar DC-to-AC converting electronic devices.

Description

technical field [0001] The invention belongs to the technical field of inverter testing, in particular to an inverter aging testing device. Background technique [0002] An inverter is an electronic device that converts DC power (including power generated by solar cells, storage batteries, wind energy, nuclear energy, etc.) into AC power (generally 220V, 50HZ sine or square wave). In layman's terms, an inverter is a device that converts direct current (DC) into alternating current (AC). Generally, it is composed of inverter bridge, control logic and filter circuit. [0003] Inverters mainly include coal power inverters, solar / photovoltaic inverters, wind energy inverters, nuclear energy inverters, etc., and are widely used in air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, DVD, VCD, Computers, TVs, washing machines, range hoods, refrigerators, VCRs, massagers, fans, lighting and other products. [0004] The current inverters are...

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Problems solved by technology

[0004] The current inverters are subjected to 3-8 hours of aging test after the production is completed. The method is to apply the rated working conditions to the inverter plus the rated load. The load is generally an electronic load or a high-power resistance load. Exposure of defective components after a certain period of time is an important link to ensure product quality, and a large amount of precious energy will be consumed in vain during the long-term inverter aging test process, such as the production of aging 10KW inverters, continuous aging The tunnel line is 100 stations, and the power supply capacity must be greater than 1000KW. It will consume 8000 kwh of electricity in 8 hours, and the electricity cost will be tens of thousands of yuan. This will cause the inverter to consume power in vain in the resistance during the aging test process, and increase environmental pollution.

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