Rapid analysis method for DC bus voltage stability of pure battery powered ship system
A technology for rapid analysis of DC bus voltage, applied in parallel operation of DC power supplies, DC network circuit devices, electrical components, etc., can solve problems such as instability, and achieve the effect of clear mechanism, easy direct engineering application, and fast analysis speed.
Active Publication Date: 2021-09-21
湖北东湖实验室
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If the DC / DC converter's stable control of the DC bus voltage cannot suppress the negative damping introduced by the power source operating characteristics of the propulsion load, the DC bus voltage will be at risk of instability, which will bring a negative impact on the safe and stable operation of the integrated power system of pure battery powered ships. to challenge
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0057] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as there is no conflict with each other.
[0058] figure 1 Shown is the application scenario of the present invention: pure battery-powered ship integrated power system.
[0059] figure 2 Shown is a schematic diagram of a typical control scheme for battery access to DC / DC converters. Double-loop control is used. The outer-loop voltage control is used to maintain a constant DC bus voltage, and the load current droop...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a fast analysis method for DC bus voltage stability of a pure battery powered ship system, which studies the negative damping characteristics dynamically introduced to the DC bus voltage by a propulsion load composed of a propulsion frequency converter and a propulsion motor; researches battery access to DC / DC The positive damping characteristics introduced by the converter to the DC bus voltage dynamics; from the perspective of whether the total damping component is positive, the rapid analysis of the DC bus voltage stability is realized. The invention provides a model, idea and method for the analysis of the DC bus voltage stability of a pure battery-powered ship comprehensive power system, and has the advantages of simple and quick analysis, clear mechanism, and convenient direct engineering application.
Description
technical field [0001] The invention relates to the technical field of safe operation of a microgrid, in particular to a method for rapidly analyzing the voltage stability of a DC bus of a pure battery powered ship system. Background technique [0002] In order to increase the energy saving and emission reduction of ships and promote the development of green shipping, the use of "oil-to-electricity" new energy ships has become the development trend of new ships. The pure battery power integrated power system is a typical power system architecture of new energy ships. Power supply for electric propulsion and daily equipment. [0003] In the pure battery power integrated power system, the battery is used as the power supply of the system, which generally supplies power to the DC bus through the DC / DC converter, and the constant voltage control of the DC bus is realized by the voltage control of the DC / DC converter. The propulsion load composed of the propulsion inverter and ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J1/00H02J1/10
CPCH02J1/00H02J1/106H02J2310/42
Inventor 胡祺马伟明马凡付立军张彦纪锋梅丹熊又星
Owner 湖北东湖实验室