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Apparatus for testing electrical energy storage systems

A voltage and circuit technology, applied in the field of testing electric energy storage systems, can solve the problems of increasing switching workload of three-level inverters, and achieve the effects of high switching frequency and improved dynamic characteristics

Active Publication Date: 2019-08-23
AVL LIST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using a three-level inverter has the disadvantage of increasing switching workload

Method used

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  • Apparatus for testing electrical energy storage systems
  • Apparatus for testing electrical energy storage systems
  • Apparatus for testing electrical energy storage systems

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] The three-phase supply voltage is split into two secondary paths in the three-phase transformer 1 , with a primary side 11 and two secondary circuits 4 , 5 . The two secondary paths each form a separate power path for generating the required switching DC voltage.

[0030] Each individual power path consists of rectifier module MR and DC-DC converter STDC, whereby rectifier module MR+6 and DC-DC converter STDC+8 are arranged in the upper power path, rectifier module MR-7 and DC-DC converter The STDC-9 is arranged in the lower power path, whereby the two rectifier modules 2 and the two DC-DC converters 3 can generally be of the same type for supporting symmetrical loads. The reference potentials 15 , 17 of the two rectifier modules 6 , 7 are connected together. The two DC voltage converters STDC+8 and STDC-9 are connected in series on the output side in order to produce the required high output at the output 18, 19 of the DC voltage converter 3 or at the reference potent...

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Abstract

The invention relates to an apparatus for generating a switched electrical DC voltage, comprising a transformer, a rectifier module (2) and a DC-DC voltage converter module (3), wherein the transformer (1) has a first secondary circuit (4) and a second secondary circuit (5), the first secondary circuit (4) has a downstream first rectifier (6) and the second secondary circuit (5) has a downstream second rectifier (7), and the first rectifier (6) has a downstream first switched DC-DC voltage converter (8) and the second rectifier (7) has a downstream second switched DC-DC voltage converter (9),the downstream DC-DC voltage converters (8, 9) being embodied as two-level step-down converters. The invention furthermore relates to the use of this apparatus for testing an electrical energy storagesystem.

Description

technical field [0001] The invention relates to a device for generating a switched DC voltage comprising a transformer, a rectifier module and a DC-DC voltage converter module. The invention also relates to the use of the device for testing electrical energy storage systems. Background technique [0002] Prior art devices for testing electrical energy storage systems, in particular battery testing systems are known in particular for testing electrical energy storage systems of electric vehicles. The battery system under test operates at the highest possible DC voltage in order to save vehicle cable cross-sections and thus save costs and weight. For test equipment, this requires the generation of switching test DC voltages in the range of 1000V and above. The same applies to the simulation of this energy storage system. [0003] For this purpose, it is known to connect a rectifier module to the secondary side of a transformer and to generate the required switched DC voltag...

Claims

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Application Information

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IPC IPC(8): H02M7/25
CPCG01R31/36H01M10/4285H02J1/10H02M7/17H02M7/25H02M1/007Y02E60/10
Inventor 罗兰·格罗尔斯蒂芬·尼斯特尔贝格尔奥利弗·考尼格阿洛伊斯·朗曼弗雷德·塞德尔保罗·鲁德尔施托费尔迈克尔·蓬贝格尔
Owner AVL LIST GMBH