Water-cooling power module of medium-voltage high-power frequency changer

A power module and high-power technology, which is applied in the direction of converting AC power input to DC power output, output power conversion device, and structural parts of conversion equipment, etc., which can solve the problems that cannot meet the limitations of front maintenance, ship use environment, and ship application fields , large volume of high-power inverters, etc., to achieve fast and reliable combination and separation, compact structure, and high power density

Active Publication Date: 2013-04-10
武汉长海电力推进和化学电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, medium-voltage high-power inverters are widely used in industrial production, and the technology is becoming more and more mature. However, conventional high-power inverters are large in size and cannot meet the requirements of front maintenance and marine environment, so they are limited in the field of marine applications.

Method used

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  • Water-cooling power module of medium-voltage high-power frequency changer
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  • Water-cooling power module of medium-voltage high-power frequency changer

Examples

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Effect test

Embodiment 1

[0029] A medium-voltage high-power inverter water-cooled power module, which includes a module frame 1, a positive power component 6, a negative power component 11, two water-cooled inductors 5, two water-cooled resistors 9, and five sets to provide channels for the input and output current of the module The high-voltage and high-current connector, the power module 4, the power transfer terminal 3, the photoelectric connector 2, and the slide rail 12; the side of the high-voltage and high-current connector is the rear, and the opposite side is the front, Each set of connectors consists of a plug 8 and a socket 7; the socket 7 of the connector is directly fixed on the vertical beam at the rear of the frame 1, and is connected with the water-cooled inductor 5 and the positive and negative power components 6, 11 by a soft busbar; The plug 8 is directly fixed on the crossbeam of the cabinet, and is connected with the DC side and output side busbars by soft busbars; the positive powe...

Embodiment 2

[0031] The difference from the above-mentioned embodiment 1 is that, further, the two water-cooled inductors 5 and the two water-cooled resistors 9 are installed in the middle of the module, and are respectively installed in two T-shaped water-cooled heat dissipation plates in the power module symmetrically with respect to the center line of the power module. The water-cooling inductor 5 is fixed at the bottom of the module, and the water-cooling resistor 9 is hoisted on the top of the module; the power module 4 and the power transfer terminal 3 that provide driving power for the IGBT inside the power module are installed in the left front frame of the module On; the photoelectric connector 2 is installed on the left front frame 1 of the module, and the external control signal and power are transmitted to the IGBT drive board and the power module through it.

Embodiment 3

[0033] The difference from the foregoing embodiment 2 is that, further, the positive and negative power components 6, 11 are fixed to the frame 1 by bolts through the T-shaped water-cooled heat sink in the power component; the two water-cooled inductors 5 It is a high-voltage current-limiting water-cooled inductor, and the two water-cooled resistors 9 are high-voltage low-inductance current-limiting water-cooled resistors.

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Abstract

The invention relates to a water-cooling power module of a medium-voltage high-power frequency changer, in particular to a uniphase H-bridge power unit of a series-wound H-bridge multi-level inverter, and belongs to the technical field of electric propulsion. The water-cooling power module of the medium-voltage high-power frequency changer comprises a module framework, a positive power component, a negative power component, two water-cooling inductances, two water-cooling resistances, five sets of high-voltage large-current connector, a power module, a power conversion terminal, a photoelectricity connector and sliding rails, wherein the five sets of high-voltage large-current connector are used for providing channels for the module to input and output current. The positive power component and the negative power component are respectively positioned on the top of the module and on the bottom of the module, and are installed fixedly and symmetrically on the framework by means of a T-shaped water-cooling heat dissipation plate inside the power components. Two water division pipes used for allowing water of the T-shaped water-cooling heat dissipation plate to passing in and out are directly installed on the framework at the right front portion of the module. The module is installed in a cabinet body by means of the pair of precise heavy-load sliding rails. The water-cooling power module of a medium-voltage high-power frequency changer has the advantages of being low in stray inductance, large in power density, compact in structure, capable of being maintained from the front side, high in reliability, good in maintainability and the like, and capable of being used in the medium-voltage high-power propulsion frequency changer.

Description

technical field [0001] The invention relates to a water-cooled power module of a medium-voltage high-power frequency converter, which is a single-phase H-bridge power unit of a series-connected H-bridge multilevel inverter, and belongs to the technical field of electric propulsion. Background technique [0002] With the rapid development of power electronics technology and system integration technology, ship integrated electric propulsion technology has attracted much attention. Ship integrated electric propulsion has incomparable advantages over traditional propulsion methods, and it is used more and more in military and civilian ships. High-power propulsion frequency converter is one of the core equipment of ship integrated electric propulsion system. Series H-bridge multilevel inverter is one of the most widely used inverter topologies in medium-voltage high-power transmission systems. It is composed of multiple single-phase H-bridge inverters. The AC outputs are connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H05K7/20
CPCH02M7/003H02M7/487
Inventor 杨涛刘念洲赵红林刘璇
Owner 武汉长海电力推进和化学电源有限公司
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