Nine-switch double-output indirect 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 limited application range, large influence of output characteristics, low voltage transmission ratio, etc. question

CN112511014APending Publication Date: 2021-03-16HUNAN UNIV OF SCI & ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-03-16

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Abstract

The invention discloses a nine-switch double-output indirect matrix converter based on a high-frequency link. The nine-switch double-output indirect matrix converter comprises a rectifier stage circuit, a high-frequency isolation transformer and a nine-switch inverter stage circuit, wherein the high-frequency isolation transformer is connected in parallel between the output end of the rectifier stage circuit and the input end of the nine-switch inverter stage circuit. According to the invention, the high-frequency link nine-switch double-output indirect matrix converter solves the problem thata traditional nine-switch double-output indirect matrix converter is low in voltage transmission ratio, is high in power density and low in transmission loss, and can achieve the 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 nine-switch double-output indirect 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 indirect matrix converter is a new type of power converter, which has the advantages of sinusoidal input and output current...

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 double-output indirect 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 nine-switch inverter stage circuit 3 and a filter circuit 4, and the high-frequency isolation transformer 2 is connected in parallel to t...