Ship DC network electric propulsion equipment, systems and equipment design methods

Abstract

The invention discloses a ship direct current networking electric propulsion device with higher device integration level and better overall performance indexes, which comprises a control cabinet, a power generation cabinet, a propulsion cabinet, a brake cabinet, a daily power supply cabinet, a direct current cabinet and a chopper cabinet which are connected with each other on a direct current bus.The invention also discloses a design method of the device, wherein the method sequentially comprises the following steps of: determining the load power of the daily power supply cabinet, propulsioncabinet and device, reasonably determining the power of the power generation cabinet according to the fact that the sum of the load power of the power generation cabinet and the chopper cabinet is larger than the load power of the device, achieving the reasonable distribution of the load power of each cabinet, in the structure arrangement of the device, according to the principles of structure symmetry and convenient wiring, forming a device structure arrangement diagram, and by calculating the direct current of the device, re-adjusting the structure of the device according to the principle ofminimum direct current, achieving higher device integration. According to the method, the overall performance indexes, the integration level, the heat dissipation and the weight of the device are optimized.

Description

Technical field [0001] The invention relates to a ship DC network electric propulsion equipment, system and equipment design method. Background technique [0002] In recent years, with the development of power electronics technology and automatic control technology, ship electric propulsion equipment has gradually transitioned from AC networking technology to more advanced DC networking technology. Compared with the traditional solution using AC networking, the DC networking method splits the AC-DC-AC changes in the AC frequency converter, and transfers the networking side of all equipment from the original AC side of the generator to the DC side. However, its power generation equipment and load equipment still use AC mode, which improves equipment integration and reduces the equipment footprint and weight. [0003] At present, although companies such as ABB and Siemens have also begun to launch their own DC networking technologies, for example, the US patent application nu...

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Problems solved by technology

[0003] At present, although companies such as ABB and Siemens have also begun to introduce their own DC networking technology, for example, the US patent application number US6188581B1 discloses a DC networking technology for ships, and the US patent application number 9800054B2 discloses A DC connection device for renewable generators has been proposed, but there is no mention of a complete set of equipment design methods, resulting in unreasonable selection of power modules, and the overall performance indicators, equipment integration, heat dissipation and weight of the equipment cannot be achieved. optimize

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