Novel cooling device for marine frequency converter

Abstract

The invention discloses a novel cooling device for a marine frequency converter. The novel cooling device comprises a ship body and a frequency converter body. The frequency converter body comprises aheat conductor, a power module, a power equipment cabinet and a control box. The bottom of the ship body is equipped with a reinforcement structure trunk; the heat conductor is installed in the trunkthrough a sealing material; the heat conductor penetrates through the trunk, and the heat dissipation end of the heat conductor is immersed in seawater; and the heat absorption end of the heat conductor is tightly attached to a first power module of the frequency converter body through heat conduction glue. The device is reasonable in structure; the frequency converter body is divided into the power equipment cabinet and the control box, the power equipment cabinet is naturally cooled in a heat conduction manner, and meanwhile, data communication is carried out between the control box and thepower equipment cabinet through an optical fiber, so that accurate control of the power module is achieved, and interference between weak electric signals of a control unit and strong electromagnetism of a power unit is greatly restrained; and such mode breaks morphological cognition of a frequency converter in the prior art.

Description

technical field [0001] The invention relates to the technical field of marine frequency converters, in particular to a novel cooling device for marine frequency converters. Background technique [0002] In industrial production, frequency converter is an effective device for driving motors. The inverter body mainly consists of rectification circuit, filter circuit, inverter, detection unit, controller and other modules. With the development of power electronics technology, frequency converters are used as drive and control equipment in motor applications in many industries to achieve convenient control and precise operation of motors. Among them, many electrical equipment on ships will also be controlled by frequency converters. [0003] On existing ships, the commonly used cooling methods for inverters include air cooling, fresh water cooling through a central cooler, and direct seawater cooling. However, the control unit and power unit of the inverter in the above coolin...

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Problems solved by technology

[0003] On existing ships, the commonly used cooling methods for inverters include air cooling, fresh water cooling through a central cooler, and direct seawater cooling. However, the control unit and power unit of the inverter in the above cooling methods are integrated in a control cabinet. This structure Form The structure of the cooling system of frequency converter is complex, and in addition, it needs to be equipped with bulky cooling air ducts or cooling pipes, cooling water pumps or cooling fans on the ship, which not only takes up space, but also wastes energy, and the cooling efficiency is low; at the same time, it is easy to cause the frequency converter to control Interference between the weak electrical signal of the unit and the strong electromagnetic of the power unit

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