Frequency converter control box aging test device

Abstract

The invention provides a frequency converter control box aging test device which comprises a voltage and current aging module, an optical fiber aging module, a temperature aging module and a logic control aging module. The voltage and current aging module is used for simulating alternating current signal waveforms outputted by a voltage sensor and a current sensor and aging voltage and current acquisition ports, the optical fiber aging module is used for simulating optical fiber feedback signals and / or motor speed signals outputted by an IGBT (insulated gate bipolar transistor), acquiring signals for controlling the IGBT to actuate, processing IGBT actuating signals and judging whether the waveforms are consistent with a standard waveform or not, the temperature aging module is used for simulating temperature rise acquired by a temperature acquisition port and accordingly completing an over-temperature alarm aging process, and the logic control aging module is used for simulating receiving and transmitting of logic switch actuating signals and judging whether actuating is executed or not. The frequency converter control box aging test device has the advantages that offline comprehensive aging test for all portions and electronic components of a control box is performed by means of long-time high-temperature operation, the quality of the control box is ensured, the aged control box cannot be damaged and the like.

Description

technical field [0001] The invention relates to the detection field of frequency converters, in particular to an aging test device for a control box of a frequency converter capable of simulating all components and signals of the frequency converter. Background technique [0002] The wind power inverter is one of the essential components in the field of wind power generation. With the advancement of science and technology, the power of a single inverter is designed to be larger and larger, resulting in the control process of the whole machine becoming more and more cumbersome. , the control core of the inverter lies in the control box, which controls all the IGBTs, contactors, various switches, and the joint work of the sensors in the inverter. Its stable work determines the working quality of the entire inverter, and the control box The normal operation of the box plays a vital role for the inverter. [0003] In the existing technology, the control box that has just come o...

AI Technical Summary

Problems solved by technology

In particular, long-term high-temperature logic control and signal acquisition in the control box, aging detection is necessary for the electronic components in the control box, but blindly installed on the inverter for the whole machine test, resulting in the control box to the work site Frequent technical issues

Once the control box is sent to the wind farm with the frequency converter to run for a period of time, there will be problems, which will cause other components to fail to operate normally, which will most likely cause the failure of the entire frequency converter, and the wind turbine will have to be shut down for maintenance, resulting in huge economic losses.

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