A pure electric official boat power system

Abstract

The invention belongs to the technical field of pure electric boats, and relates to a pure electric official boat power system, which includes at least two sets of main circuit topology structures with the same structure, the structure includes a power module, and supplies power through a bidirectional DC-DC voltage stabilization module and a fuse To the DC busbar; the DC busbar is used for the access and distribution of the electric energy of the whole ship, and the DC busbar is provided with at least one fuse; the DC power of the power module is connected through the bidirectional DC‑DC voltage regulator module and the fuse, through Fuses and DC-AC inverter modules are converted into AC power for the electric propulsion system and the ship's auxiliary and daily loads; the two-way DC-DC voltage regulator module, DC-AC inverter module and DC busbar are connected to each other through the profinet bus. The power management system communicates to control the work of each module. Each module uploads its real-time operating status information to the power management system, which is convenient for the power management system to analyze and process the data of the whole ship.

Description

technical field [0001] The invention belongs to the technical field of pure electric boats and relates to a power system, in particular to a pure electric official boat power system. Background technique [0002] The application of pure electric technology in my country's boat industry is relatively late, and up to now there is no pure electric official boat that has actually been approved by the China Classification Society. At present, the power system of official boats is mainly driven by diesel engines, and a small amount of oil-electric hybrid and pure electric propulsion methods are used. However, diesel engine direct drive and oil-electric hybrid have not really solved the pollution problem of ship emissions. A small number of pure electric business boats adopt the propulsion method of "power battery pack (or super capacitor) + variable DC bus". This main topology A series of problems such as the inability to control the power output of the power battery pack (or sup...

AI Technical Summary

Problems solved by technology

However, the power supply mode of this oil-electric hybrid AC network has the following disadvantages: firstly, it does not solve the problem of environmental pollution, and does not really realize cleanliness, and the power battery only exists as a clean energy element; secondly, for the comfort requirements Higher official boats, sightseeing boats, sightseeing boats, the vibration and mechanical noise of the diesel engine have not been resolved; finally, this main topology requires that the diesel engine must be a constant speed machine, otherwise, due to the change of the electric energy and voltage generated by the generator, it cannot be realized. Real-time grid connection of battery packs

However, this topology is completely powered by a power battery pack. Although it solves the problems of noise, vibration, and pollution caused by diesel engines, and achieves cleanliness, this main topology is only suitable for power batteries with small capacity, Business boats with small propulsion power

The DC bus voltage is always changing with the discharge of the power battery pack and cannot be controlled: on the one hand, the internal circulation of each battery pack is large and the heat is obvious; on the other hand, the input voltage range of the DC side of the inverter is required to be wide

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