Non-isolated bidirectional multiport direct current (DC) converter

A DC converter and multi-port technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of lowering system reliability, lowering system efficiency, and low power conversion efficiency, so as to improve system reliability and improve system efficiency. The effect of efficiency and adaptability
CN103199699AInactive Publication Date: 2013-07-10NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
2 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2013-07-10
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a non-isolated bidirectional multiport direct current (DC) converter, and belongs to the technical field of power electronic converters. The converter is formed by N bidirectional input / output circuit units, wherein the N is a natural number bigger than 1. Each bidirectional input / output circuit unit is formed by an input source, two switching tubes and an inductor, the input sources of all the bidirectional input / output circuit units are in public ground connection, and one ends of the inductors of all the bidirectional input / output circuit units are connected together. The non-isolated bidirectional multiport DC converter has the advantages that all the input sources are in public ground connection, single-stage non-isolated switching is carried out among all the input sources, voltage ascending and descending switching is carried out among all the input sources, power can be transmitted mutually among all the input sources, a circuit topology is simple, power density is high, a switching rate is high, reliability is high, cost is low and the like, and the non-isolated bidirectional multiport DC converter settles key technology for a distributed DC supply system.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a non-isolated bidirectional multi-port DC converter, which belongs to the technical field of power electronic converters. Background technique

[0002] In DC distributed power supply systems such as renewable energy power supply systems and aerospace power supply systems, there are usually multiple DC buses or input sources with similar voltage levels. In order to improve the reliability of the entire power supply system, it is necessary to connect each DC bus or input sources to each other. , in order to realize mutual bidirectional, controllable power transmission. In order to realize the connection of multiple DC buses or input sources, traditional solutions usually adopt a system architecture based on a common DC bus, as shown in the attached figure 1 As shown, each DC bus or input source is connected to the common DC bus through a bidirectional DC converter, and the public DC bus is used as a medium to complete the power...

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