Frequency converter special for air compressor and air compressor variable-frequency drive control system

Abstract

The invention provides a frequency converter special for an air compressor and an air compressor variable-frequency drive control system. The frequency converter special for the air compressor comprises a temperature detection circuit, a pressure detection circuit, an external fault detection interface and a control circuit. The frequency converter special for the air compressor is provided with the temperature detection circuit, the pressure detection circuit and the external fault detection interface, and hardware support is provided for the frequency converter special for the air compressor to integrate functions of an air compressor controller. As the frequency converter special for the air compressor integrates the functions of the air compressor controller, a special air compressor controller is not required to communicate with the frequency converter, the complicated parameter configuration process and the condition that the frequency converter is incompatible are avoided, the special frequency converter controller is omitted, the wiring of the air compressor variable-frequency drive control system is reduced, the system integration degree is improved, and the system is convenient to debug, mount and maintain.

Description

technical field [0001] The present application relates to the technical field of frequency conversion air compressor control, in particular to a special frequency converter for an air compressor and a frequency conversion drive control system for an air compressor. Background technique [0002] As an important form of energy generation, air compressors are widely used in life and production, especially screw air compressors. The existing electric control drive schemes for screw air compressors mainly include the following types: [0003] (1) Use industrial frequency power to drive the air compressor host and oil cooling fan. However, when the main engine of the air compressor is driven by a power frequency power supply, the starting current is large, which has a large impact on the power grid, and when the gas consumption is small or no-load operation, the power consumption is large, resulting in waste of electric energy, and the gas pressure of the pipeline is always betwe...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the embodiment of the present application provides a dedicated frequency converter for air compressors and a variable frequency drive control system for air compressors, so as to avoid complicated parameter configuration process and incompatible frequency converters, and reduce the frequency conversion of air compressors. Control the wiring of the system, improve the system integration, and facilitate the debugging, installation and maintenance of the system. The technical scheme is as follows:

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