Anti-impact testing device of inverter

Abstract

The invention discloses an anti-impact testing device of an interter. The anti-impact testing device comprises a master contactor and a testing branch which are connected in series with inverter output wires. The testing branch comprises a plurality of parallel branches which are connected in parallel, each parallel branch comprises a branch contactor and a testing device which are connected in series, and the changes between a no-working state and a working state of the testing device are visible. The anti-impact testing device of the inverter further comprises a contactor state detecting module, an impact management unit, an impact power input module and a contactor control module. The anti-impact testing device of the inverter is more precise on computing of the number of the testing devices, and does not make mistakes. Meanwhile, the using times of the testing devices in all parallel branches is equalized. The production efficiency is improved, and the fault probability of the testing device is reduced.

Description

technical field [0001] The invention relates to the technical field of impact testing of inverter power supplies, in particular to an anti-shock testing device for inverter power supplies. Background technique [0002] As a device that converts DC power (such as batteries and storage batteries) into AC power (generally 220V, 50HZ sine wave), the inverter power supply's primary task is to supply power to the load. In order to avoid damage to equipment and circuits caused by some special circumstances during use, such as sudden impact loads and overloading of the inverter power supply, an inverter protection circuit is often installed in the inverter power supply. The inverter protection circuit will only be activated for sudden and large impact loads. The inverter power supply of each power segment will have its own indicators. These indicators are strictly tested during the product development process and before leaving the factory. [0003] The shock resistance test device...

AI Technical Summary

Problems solved by technology

However, in the existing anti-shock test device for inverter power supply, the use of test device D' is manually selected and controlled by the operator. Due to the limitation of the operator's memory ability, it is very easy to cause uneven distribution of the number of test devices D' used. The test device D' has a high frequency of use, and some test devices D' have a low use frequency. On the one hand, the test device D' with high frequency does not emit heat due to the previous use temperature and is used continuously at high temperature; on the other hand, due to its limited service life, excessive use, will cause damage to the test device D'; and when testing high-power inverters, the test device D' in the test branch 1' is used more, and it is easy to artificially select and control the number of test devices D' error, resulting in inaccurate test data

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