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Double module for modular multi-stage converter

A converter and sub-module technology, which is applied in the direction of output power conversion device, AC power input conversion to DC power output, AC network circuit, etc., can solve the problems of sub-module damage, high short-circuit current, etc., and reduce the cost of joint flames dangerous effect

Active Publication Date: 2013-02-13
SIEMENS ENERGY GLOBAL GMBH CO & KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such short circuits at the connection terminals lead to high short circuit currents which can lead to irreparable damage to the submodules

Method used

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  • Double module for modular multi-stage converter
  • Double module for modular multi-stage converter

Examples

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Embodiment Construction

[0019] figure 1 An exemplary embodiment of a submodule 1 according to the invention is shown. The submodule 1 has an energy store series circuit 2 consisting of a first energy store 3 and a second energy store 4 . Parallel to the energy store series circuit 2, a semiconductor total series circuit 5 is arranged, which is composed of a first power semiconductor switching unit 6, a second power semiconductor switching unit 7, a connection switching unit 8, a third power semiconductor switching unit 9 and the fourth power semiconductor switch unit 10. Each of the power semiconductor switch units 6, 7, 9, 10 and the connection switch unit 8 has an IGBT 11 as a switchable power semiconductor switch with a conduction signal indicated by an arrow. pass direction. The individual IGBTs 11 can be switched from their on state to their off state via corresponding control signals from a control unit not shown in the drawing. In parallel with each IGBT 11 , a freewheeling diode 12 is arr...

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Abstract

The present invention relates to a submodule (1) for a converter in the high-voltage range with a reduced risk of cross-ignition. The submodule has a first and a second energy storage means (3, 4) which are connected in series, a first and a second semiconductor series circuit (13, 15) which are respectively connected in parallel with the first (3) and the second (4) energy storage means and which comprise a first (6) and a second (7), and respectively a third (9) and a fourth (10), power semiconductor switching unit which can be switched on and switched off, a first connection terminal (20) which is connected to a first potential point between the first and the second power semiconductor switching unit (6, 7), a second connection terminal (21) which is connected to a second potential point between the third and the fourth power semiconductor unit (9, 10). The invention proposes arranging a connecting switching unit (8) between the first and the second semiconductor series circuit (15), arranging a first connecting branch (14) with a first connecting branch diode (17) between the first potential point and the potential point between the energy storage means (3, 4), and arranging a second connecting branch (16) with a second connecting branch diode (18) between the second potential point and the potential point between the energy storage units (3, 4), wherein the connecting branch diodes (18, 19) are oriented in opposite directions to one another.

Description

technical field [0001] The invention relates to a submodule for a converter in the high-voltage range, having a first energy store, a first and a second switchable power semiconductor switching unit connected in parallel to the first energy store A first semiconductor series circuit, a first connection terminal connected to a potential point between the first and second power semiconductor switching units, a second energy store connected in series with the first energy store, a second energy store arranged in parallel with the second energy store A second semiconductor series circuit consisting of third and fourth switchable power semiconductor switching units and a second connection terminal connected to a potential point between the third and fourth power semiconductor switching units. [0002] The invention also relates to a converter for converting voltage or current in the high-voltage range, which has a phase module extending between two direct voltage connections and ea...

Claims

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Application Information

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IPC IPC(8): H02M7/757H02M7/487H02M1/32H02J3/18
CPCH02J3/1857H02M1/32Y02E60/60H02M7/7575H02M2007/4835H02M7/5387H02M7/487H02M1/325H02M7/4835H02M1/0095
Inventor H-G.埃克尔H.甘巴赫
Owner SIEMENS ENERGY GLOBAL GMBH CO & KG
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