Electric propulsion ship alternating-current power supply system

A technology of power supply system and electric propulsion, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., to achieve the effect of simplifying functions and saving cabin space

Active Publication Date: 2016-08-03
中国船舶重工集团公司第七0四研究所 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problems existing in the power supply of the ship propulsion system, and proposes an AC power supply system for electric propulsion ships, which can save the spac

Method used

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  • Electric propulsion ship alternating-current power supply system
  • Electric propulsion ship alternating-current power supply system
  • Electric propulsion ship alternating-current power supply system

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Embodiment Construction

[0017] Such as figure 1 The AC power supply system diagram of the electric propulsion ship is shown. The power supply system is composed of a diesel generator set, a switchboard, a propulsion system and a daily transformer. Among them, the diesel generator set includes three 1800kW main diesel generator sets and one 1000kW auxiliary diesel generator set. The diesel generator set is equipped with an automatic voltage regulation device, and the generator voltage automatic regulator selects the corresponding excitation current according to the output current of the generator to automatically adjust the generator Output stable 690V voltage. The distribution board is divided into left busbar and right busbar areas. The output of two main diesel generator sets is connected to one busbar, and the output of one main diesel generator set and one auxiliary diesel generator set is connected to another busbar. The left and right areas are composed of The bus tie switch is connected, and ...

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Abstract

The invention relates to an electric propulsion ship alternating-current power supply system which is composed of diesel generator sets, a distribution panel, a propulsion system, and a daily transformer. The diesel generator sets comprise multiple main diesel generator sets and an auxiliary diesel generator set. The distribution panel is divided into areas according to the number of bus-bars, the areas are connected by a bus coupler switch, and the bus coupler switch is closed during normal operation. The outputs of the diesel generator sets are connected to the bus-bars. The distribution panel is configured with a power management system. The propulsion system is composed of a frequency converter with a reactive power compensation function, a three-phase alternating-current asynchronous motor and a propeller which are connected in sequence. The daily transformer provides power for the daily loads of a ship except the propulsion system. The diesel generator sets provide active power load of the propulsion system and the daily loads, and the frequency converter provides reactive power load of the daily loads. The problem that reactive power provided by generators is distributed unequally and the problem of active power consumption fed back when the propulsion system slows down are solved effectively.

Description

technical field [0001] The invention relates to a ship power system, in particular to an AC power supply system for electric propulsion ships. Background technique [0002] With the extensive application of electric propulsion systems on engineering ships, scientific research ships, offshore platforms and hybrid ships, practice has fully proved that electric propulsion ships have excellent control performance, low noise, flexible engine room layout and good economy. There are also some problems that need to be improved as described below. [0003] Because electric propulsion ships need to consider the problem of controlling harmonics, at present, frequency converters using multi-phase diode rectification are mainly used to provide energy for the propulsion system, but this solution must require corresponding phase-shifting transformers. For example, having two main propellers means With two more phase-shifting transformers of corresponding capacity, the demand for cabin spa...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/48H02J3/50
CPCH02J3/381H02J3/48H02J3/50
Inventor 胡斌吴国栋曾志林殷非王良秀张元玮田野
Owner 中国船舶重工集团公司第七0四研究所
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