Pure battery power ship powered system and control method

Abstract

The invention provides a pure battery power ship powered system. Another technical scheme of the invention is to provide a control method of the system. The pure battery powered ship power system provided by the invention is configured with a plurality of groups of battery packs and high-voltage boxes, two sets of main propulsion inverters and motors, two sets of daily inverters, one set of side propulsion inverters and motors, one set of air conditioner inverters and motors, one solid-state circuit breaker, two shore power interface boxes and one set of comprehensive control system. The battery packs supply power to the main propulsion inverters and the motor by adopting a three-level framework, a three-phase direct-current solid-state circuit breaker is configured in the middle of a direct-current bus, the daily inverters adopt a grid-connected operation mode, a shore power direct-current charging system is adopted to directly charge the battery packs, and a comprehensive control system is configured. According to the pure battery powered ship power system, vibration and noise of the propulsion motor are reduced, the energy density of main equipment is improved, the cost and space arrangement of the system are reduced, and the safety and reliability of the system are improved.

Description

technical field [0001] The invention relates to a pure battery power ship power system and a control method, in particular to a pure battery power ship power system and a control method. Background technique [0002] In recent years, with the advancement of technology and higher requirements for ship power systems, diesel-electric propulsion has been generally recognized as a power method for special ships. With the country's vigorous control of ship pollutant emissions, as well as the advancement of battery technology and the decline in prices, battery electric propulsion systems are widely mentioned as a representative of clean power systems, which meet the requirements of "zero emissions", " "Low noise" will further reduce operating costs, and will be the first choice for the power of small and medium-sized inland ships in the future. [0003] At present, the existing pure battery power ship power system generally uses a 600V ~ 750VDC two-level DC bus to provide power fo...

AI Technical Summary

Problems solved by technology

[0007] The technical problems to be solved by the present invention are: current pure battery powered ships have problems such as large vibration and noise of the main propulsion motor, low energy density, poor reliability of selective protection, uninterrupted power supply for daily loads, configuration of charging modes, etc.

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