Online replacement control device and method for power module of power electronic transformer system

A power module and power electronics technology, applied in the field of power module online replacement control, can solve problems such as increasing cost, reducing efficiency, and increasing system volume, and achieves the effects of improving efficiency, reducing volume and cost

Active Publication Date: 2021-03-26
GUOCHUANG INNOVATION CENTER OF MOBILE ENERGY (JIANGSU) CO.,LTD. +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, in order to realize the function of online replacement of power modules in the power electronic transformer system, the external power supply method is generally adopted. This

Method used

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  • Online replacement control device and method for power module of power electronic transformer system
  • Online replacement control device and method for power module of power electronic transformer system
  • Online replacement control device and method for power module of power electronic transformer system

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[0014] Next, the technical solutions in the embodiments of the present invention will be apparent from the embodiment of the present invention, and it is clearly described, and it is understood that the described embodiments are merely embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.

[0015] Such as figure 1 , The power of the electronic transformer system according to an embodiment of the present invention includes a plurality of power modules, a plurality of AC input terminals of the power modules in series, in parallel to the DC output terminal of the plurality of power modules. In one embodiment of the invention, the power electron transformer system can be a single phase system or a three-phase system. figure 1 A single-phase system, a single-phase power supply fire line, and a zero line are respe...

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Abstract

The invention provides an online replacement control device and method for a power module of a power electronic transformer system, and the device is characterized in that a first bypass switch is connected to an AC input end in parallel; a first auxiliary power supply is used for taking power from the DC side of the first AC/DC unit; a first control module is used for controlling the first bypassswitch to be switched on when the power module needs to be replaced, controlling the first bypass switch to be switched off after the power module is replaced and powered on again and sending a powertaking stopping instruction to the second control module; a second bypass switch is connected in series with the DC output end; a second auxiliary power supply is used for taking power from an external power supply; and a second control module is used for controlling the second bypass switch to be switched off when the power module needs to be replaced, controlling the second bypass switch to beswitched on after the power module is replaced, controlling the replaced power module to take electricity from the direct-current side of the second AC/DC unit to charge the direct-current bus capacitor, and controlling the replaced power module to stop taking power from the DC side of the second AC/DC unit according to the power taking stopping instruction.

Description

technical field [0001] The invention relates to the technical field of power electronic transformer systems, in particular to a power module online replacement control device for a power electronic transformer system and a power module online replacement control method for a power electronic transformer system. Background technique [0002] At present, in order to realize the function of online replacement of power modules in the power electronic transformer system, the external power supply method is generally adopted. This method needs to add an isolation transformer to the power electronic transformer system, which not only increases the system volume, but also increases the cost and reduces the efficiency. Contents of the invention [0003] To solve the above technical problems, the present invention provides a power module online replacement control device and method for a power electronic transformer system, which can effectively reduce the volume and cost of the powe...

Claims

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Application Information

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IPC IPC(8): H02M7/04
CPCH02M7/04
Inventor 段建华黄秋燕牛坤宏杨志邵丹薇
Owner GUOCHUANG INNOVATION CENTER OF MOBILE ENERGY (JIANGSU) CO.,LTD.
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