Double-output two-stage matrix converter based on high-frequency link

A matrix converter and dual output technology, applied in the direction of output power conversion device, AC power input conversion to AC power output, electrical components, etc., can solve the problem of large influence on output characteristics, limited application range, low voltage transmission ratio, etc. question

CN112511013APending Publication Date: 2021-03-16HUNAN UNIV OF SCI & ENG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-03-16

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Abstract

The invention discloses a double-output two-stage matrix converter based on a high-frequency link. The double-output two-stage matrix converter comprises a two-stage matrix converter and a high-frequency isolation transformer, and the two-stage matrix converter is composed of a rectifier stage circuit and an inverter stage circuit. The high-frequency isolation transformer is connected between theoutput end of the rectifier stage circuit and the input end of the inverter stage circuit. The high-frequency link double-output two-stage matrix converter solves the problem that a traditional IMC five-bridge-arm inverter is low in voltage transmission ratio, and meanwhile has the advantages of being high in power density, low in transmission loss and capable of achieving input-output stage electrical isolation.
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Description

technical field

[0001] The invention relates to a power electronic converter, in particular to a dual-output dual-stage matrix converter based on a high-frequency chain. Background technique

[0002] Due to the advantages of small torque ripple, low DC bus current harmonic content, and high system reliability, the dual AC motor drive system has been widely used in hybrid electric vehicles, urban rail locomotive traction systems, and aerospace and other fields. Since the dual-output power converter is the core link in the dual-AC motor drive system, and is restricted by factors such as space, the number of switching devices, and manufacturing costs, the dual-output power converter of the dual-AC motor drive system has advantages in size, applicability, and reliability. Sexuality and other aspects put forward higher requirements.

[0003] The dual-stage matrix converter is a new type of power converter, which has the advantages of sinusoidal input and output current, bidirect...

Examples

Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. In addition, according to the description of this document, those skilled in the art can make a corresponding combination of the features in the embodiments and different embodiments in this document. The specific implementation manner of the present invention will be described in detail below through the embodiments in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, the dual-output dual-stage matrix converter based on the high-frequency chain of the present invention includes a rectification stage circuit 1, a high-frequency isolation transformer 2, a five-arm inverter stage circuit 3 and a filter circuit 4, and the high-frequency isolation transformer 2 is connected in parallel to the ...