New energy ship uninterruptible power supply and distribution system and control method thereof

Abstract

The invention relates to a new energy ship uninterruptible power supply and distribution system and a control method thereof, shore power and an emergency generator are connected to an AC distribution board, a bidirectional reversible frequency conversion module and a daily transformer are connected between the AC distribution board and a DC distribution board, and a corresponding power supply and distribution control system is configured. A traditional high-power rectifier module and a daily inverter module are combined into a whole, and a shore-side high-power daily transformer and a ship daily transformer are combined into a whole, so that the space of a ship and the price of equipment are saved, and the problem of common-mode voltage is solved; through effective control logic and a control method, uninterrupted switching of three power supplies of the battery pack, the emergency generator and the alternating current shore connection box and uninterrupted switching among three working conditions of normal sailing, emergency sailing and docking charging are achieved, and the safety, the experience feeling and the automation level of the battery power ship are improved.

Description

technical field [0001] The invention relates to a ship power supply technology, in particular to a new energy ship uninterrupted power supply distribution system and a control method thereof. Background technique [0002] With the country's vigorous control of ship pollutant emissions, as well as the advancement of battery technology and the decline in prices, battery power has been widely proposed as a representative of clean power systems, which meet the requirements of "zero emission" and "low noise". At the same time, it will further reduce the operating cost, and it will be the first choice for the power of small and medium-sized inland ships in the future. [0003] Due to the lack of current ship DC charging regulations and the limitation of shore-side DC power supply capacity, most of the new energy ship shore power needs to use the AC shore power connection method, and because the AC power is converted into DC power to charge the battery, high power controllability i...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems that the current battery-powered ship power system adopts high-power controllable rectification equipment, the equipment occupies a large space, the price and cost are high, and there is a common-mode voltage, and it is impossible to realize the uninterrupted switching of multiple power sources. A new energy ship uninterrupted power supply is proposed. The distribution system and its control method are connected to the AC distribution board through the shore power and the emergency generator, the bidirectional variable frequency inverter module and the daily transformer are connected between the AC distribution board and the DC distribution board, and the corresponding supply and distribution boards are configured. The scheme of the electric control system effectively solves the above-mentioned defects in the existing battery-powered ships

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