Multi-mode control system of three-phase fixed-frequency pump

Abstract

The invention provides a multi-mode control system of a three-phase fixed-frequency pump. The multi-mode control system is electrically connected with the three-phase fixed-frequency pump and a data center monitoring system, and comprises a mode selecting unit and a starting mode adjusting unit which are connected in parallel. The multi-mode control system at least has two control modes. In the first control mode, the mode selection unit conducts a first correlation switch at the same time, a manual starting loop of the three-phase fixed-frequency pump is conducted, and the three-phase fixed-frequency pump is made to enter a manual starting mode; in the second control mode, the mode selection unit conducts a second association switch at the same time, an automatic starting loop of the three-phase fixed-frequency pump is conducted, the three-phase fixed-frequency pump is made to enter an automatic starting mode, and an operation signal is reported to the monitoring system; in the first control mode, the mode adjusting unit is started to enable the three-phase fixed-frequency pump to be in a working state all the time; and in the second control mode, the mode adjusting unit is started to monitor a control signal sent by the system, and the three-phase fixed-frequency pump is controlled to be started or stopped. The control intensity of the fixed-frequency pump is improved, and a control system of the fixed-frequency pump is more user-friendly.

Description

technical field [0001] The invention belongs to the technical field of data center refrigeration, and in particular relates to a multi-mode control system of a three-phase fixed-frequency pump. Background technique [0002] At present, with the rapid development of the data center business and the broad prospect of liquid cooling, the data center industry has gradually paid more attention to the pump control system; the market items of the data center are relatively flexible, and customers often propose various solutions for the cooling part. At the same time, the refrigeration industry needs a better control system to realize the control of the pump. While ensuring the reliable operation of the pump, it must take into account various working conditions that may occur, and in each working condition detailed analysis; at the same time, it is also necessary to find hidden risks and consider the countermeasures after the risks occur. [0003] The design of the existing pump co...

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Problems solved by technology

[0003] The design of the existing pump control system is relatively mature in general, but due to the difference in customer focus on the refrigeration control part of the data center and the difference in the design concept of the control system by the integrator of each pump; the control strength of the fixed frequency of the data center is not enough , and the mode is single, which cannot be better maintained

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