A marine liquid-cooled multi-inverter control system

Abstract

A liquid-cooling multi-inverter controller system for a ship comprises a plurality of inverters, wherein the plurality of inverters are connected to a public DC bus, a pre-charging circuit is connected onto a power supply loop between each inverter and the public DC bus, each inverter is used for providing a three-phase AC power supply for a motor, one of the inverters is also used for providing the three-phase AC power supply for a circulation cooling device by a sine filter, the circulation cooling device is connected with a liquid-cooling device of the inverter through a liquid supply pipeline and a liquid return pipeline, and the circulation cooling device and each inverter are in communication connection through a network and monitoring center. In the liquid-cooling multi-inverter controller system employing the technical scheme, multiple groups of ship inverters employ a liquid-cooling heat dissipation technology, no extra fan and air conditioner are needed to be arranged, a cooling liquid directly flows into cooling coils in the inverters from an input pipeline to cool the cooling coils, and the heat dissipation efficiency of the system can be effectively improved.

Description

technical field [0001] The invention belongs to the field of marine electric frequency conversion transmission, in particular to a marine liquid-cooled multi-inverter control system. Background technique [0002] With the energy saving and environmental protection of ships and the smooth control requirements of various key equipment, frequency conversion drives are increasingly widely used in the field of modern ship transmission. In the marine multi-motor AC speed control transmission system, many motors are required, and each motor needs to be driven by an inverter alone. Each inverter has its own independent rectification device. With the increase of transmission points in the system, the disturbance of the system is greatly increased, and the amount of equipment maintenance and the space occupied by the equipment are also increased. The common DC bus technology can greatly improve this. The disadvantage is that the inverter is directly hung on the DC bus, the pre-chargi...

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Problems solved by technology

[0003] The traditional inverter adopts air-cooling and heat dissipation, and the protection level is not high. It depends on the air-conditioned cabin environment. The inverter has a large power, and when there are a large number, it takes up a lot of space. It is not suitable for installation in high-temperature, high-humidity and narrow spaces on ships.

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