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A multi-functional high-efficiency power unit and its power circuit

A power unit and power circuit technology, applied in the direction of irreversible AC power input conversion to DC power output, DC power input conversion to DC power output, AC power input conversion to DC power output, etc., to achieve compact structure and flexible assembly and disassembly Effect

Active Publication Date: 2022-03-15
XIAN YONGDIAN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a multifunctional high-efficiency power unit and its power circuit, which solves the problem of concentrating rectification and bidirectional DC / DC chopping functions on the same power unit

Method used

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  • A multi-functional high-efficiency power unit and its power circuit
  • A multi-functional high-efficiency power unit and its power circuit
  • A multi-functional high-efficiency power unit and its power circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 1 and figure 2 As shown, a multifunctional high-efficiency power unit includes a three-phase rectification unit 1 and a bidirectional DC / DC chopper conversion unit 2 with a three-level structure.

[0058]The three-phase rectification unit 1 and the bidirectional DC / DC chopper conversion unit 2 of the three-level structure are fixedly connected to the air duct assembly 3 through an insulating device; the air duct assembly 3 is connected with the three-phase rectification unit 1 and the bidirectional DC The / DC chopping conversion unit 2 is formed in an H shape.

[0059] refer to Figure 6 , the three-phase rectification unit 1 includes a rectification radiator 11 , and the bidirectional DC / DC chopper conversion unit 2 includes a chopper radiator 21 .

[0060] The substrate surfaces of the rectifying radiator 11 and the chopper radiator 21 are on the same plane.

[0061] The three-phase rectification unit 1 also includes a rectification radiator 11 , t...

Embodiment 2

[0084] Such as image 3 and Figure 4 As shown, a multifunctional high-efficiency power circuit includes a three-phase rectification module, a bidirectional DC / DC chopper conversion module with a three-level structure, and a control module.

[0085] The three-phase rectification module, the three-phase rectification module, the bidirectional DC / DC chopper conversion module and the control module of the three-level structure are connected by wires.

[0086] The three-phase rectifier module is composed of VD1~VD6 diode modules with a high junction temperature of 150°C. Three double-tube high-junction temperature diodes input U / V / W laminated busbars and DC output DC+ / DC- laminated through three-phase AC. After the busbars are connected, a standard three-phase rectification main circuit is formed to realize power conversion from three-phase AC to DC.

[0087] The bi-directional DC / DC chopper conversion module of the three-level structure includes a fuse F1, which is convenient f...

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Abstract

A multifunctional high-efficiency power unit, the high-efficiency power unit includes a three-phase rectifier unit and a bidirectional DC / DC chopping conversion unit with a three-level structure; the bidirectional DC / DC chopping conversion unit can not only realize the step-down chopping function, but also The boost chopper function can be realized, so as to realize the bidirectional flow of energy; the three-phase rectification unit and the bidirectional DC / DC chopper conversion unit of the three-level structure are fixedly connected through the insulating device; the three-phase rectification unit and the bidirectional structure of the three-level structure A supporting capacitor is installed on the top of the DC / DC chopper conversion unit; the whole multifunctional power unit adopts H-shaped air duct design, the air duct and the power unit are assembled on the left and right structures, and the three-phase rectifier unit and the bidirectional DC / DC chopper of the three-level structure The conversion units are independent of each other, and the two units are fastened and connected by an insulating device to ensure that the heat pipe radiator surfaces of the two module units are on the same plane. The inside of the whole module is independent of each other, and the outside is self-contained; the supporting capacitor is installed above the power unit , compact structure, flexible assembly and disassembly.

Description

technical field [0001] The invention belongs to the field of traction power supply conversion circuit equipment for diesel locomotives, and in particular relates to a multifunctional high-efficiency power unit and a power circuit thereof. Background technique [0002] Under the environment that the country vigorously advocates energy saving and emission reduction, the requirements for energy-saving indicators in the field of rail transit and urban rail are getting higher and higher. Therefore, the proportion of traction power source provided by batteries is increasing, and the capacity of batteries is required to be greater. This is also an inevitable trend in the development of traction power in the future. Therefore, energy saving and environmental protection are an important performance index for locomotive shunting. This requires the design of a multifunctional integrated power unit that can not only rectify the three-phase AC power generated by the main generator For di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00H02M3/155H02M7/00H02M7/06H05K7/20
CPCH02M1/00H02M7/003H02M7/06H02M3/155H05K7/2089H05K7/20909
Inventor 陈宏高永军张丹陈彦肖苑伟华王亮亮
Owner XIAN YONGDIAN ELECTRIC