Shipping direct-current networking electric propulsion system with pulse load assembly and adjusting and controlling method

Abstract

The invention discloses a shipping direct-current networking electric propulsion system with a pulse load assembly and an adjusting and controlling method. The problem that efficiency of diesel power generating sets is low due to the fact that the shipping diesel power generating set design volume is rather large is solved. The shipping direct-current networking electric propulsion system comprises a first diesel power generating set (1) and a second diesel power generating set (3), the first diesel power generating set (1) is connected with a common direct-current bus (5) through a first rectification frequency converter (2), and the second diesel power generating set (3) is connected with the common direct-current bus through a second rectification frequency converter (4). A main propulsion motor inversion converter (6) and a side propulsion motor inversion converter (9) are connected to the common direct-current bus, a shipping pulse load inversion converter (17) is connected to the common direct-current bus, the output end of the shipping pulse load inversion converter is connected with the shipping pulse load assembly (18) through a shipping pulse load transformer (13), and a wave chopper (15) and a super capacitor bank (16) are connected to the common direct-current bus. The oil consumption quantities of the power generating sets are reduced, and efficiency of the power generating sets is improved.

Description

technical field [0001] The invention relates to a ship DC network electric propulsion system, in particular to a ship DC network electric propulsion system with pulse load and a control method. Background technique [0002] At present, the electric propulsion system of the ship has begun to adopt a DC network electric propulsion system, which is composed of a diesel generator set, a public DC bus, a frequency converter and a propulsion system. The ship's diesel generator set not only supplies power to the ship's daily electrical load, but also supplies power to the ship's propulsion system. For some ships with pulse loads, the power load level during operation is unstable, showing periodic or non-periodic pulse changes, for example: ships with winch loads, when the winch is lifting heavy objects, Its power demand will increase rapidly, and in other operating conditions, its power load is relatively low and in a stable state; another example is a ship with drilling equipment...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a ship DC network electric propulsion system with a pulse load and a control method, which solves the technical problem of low efficiency of the diesel generator set caused by the large design capacity of the ship diesel generator set with a pulse load

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