High-voltage frequency converter protection system based on temperature control function

Abstract

The invention discloses a high-voltage frequency converter protection system based on a temperature control function, which comprises a fixed frame and a protection system, and is characterized in that a water drum I and a water drum II are fixed on the inner side of the fixed frame, and two cooling pipes are arranged above the water drum I and the water drum II; the two ends of the two cooling pipes are connected to the top end of the first water drum and the top end of the second water drum in a sleeving mode respectively, a high-voltage frequency converter is arranged on one side of the fixing frame, the two cooling pipes are wound around the outer side of the high-voltage frequency converter, and a pump is arranged in the second water drum. Sensors are arranged in the ends, connected with the first water drum, of the two cooling pipes, the outer side of the upper end of the first water drum is sleeved with a temperature detector, a heater is fixed into the second water drum, and the outer sides of the upper ends of the first water drum and the second water drum are sleeved with air pipes. The method has the characteristic of carrying out targeted protection according to the use time period and the external temperature change.

Description

technical field [0001] The invention relates to the technical field of high-voltage frequency converters, in particular to a high-voltage frequency converter protection system based on a temperature control function. Background technique [0002] Frequency conversion energy saving The energy saving of frequency converter is mainly manifested in the application of fans and water pumps. In order to ensure the reliability of production, a certain amount of margin is left when all kinds of production machinery are designed to be equipped with power drives. When the motor cannot run at full load, in addition to meeting the power drive requirements, the excess torque increases the consumption of active power, resulting in a waste of electric energy. For water supply in residential areas with super high floors, high-voltage frequency converters are often used to control water pumps. Due to the high floor and the different time of water use in high-rise buildings, the high-voltage ...

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Problems solved by technology

When the motor cannot run at full load, in addition to meeting the power drive requirements, the excess torque increases the consumption of active power, resulting in a waste of electric energy. For water supply in residential areas with super high floors, high-voltage frequency converters are often used to control water pumps. Due to the high floor and the different time of water use in high-rise buildings, the high-voltage inverter will generate more heat when it is working. If it is not protected by temperature control, the service life of the high-voltage inverter will be greatly reduced.

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