Hvdc converter comprising fullbridge cells for handling a DC side short circuit

A technology of converters and auxiliary units, which is applied in the direction of output power conversion devices, power management, electrical components, etc., can solve the problems of converter size, weight and cost increase, and achieve the minimization of needs, the reduction of size and weight, and the reduction of Effect of Small and Large Voltage Transients

Active Publication Date: 2013-06-05
ALSTOM TECH LTD
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-zero DC flowing in a voltage source converter results in persistent arc formation when the contacts are opened using conventional mechanical circuits
Therefore,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hvdc converter comprising fullbridge cells for handling a DC side short circuit
  • Hvdc converter comprising fullbridge cells for handling a DC side short circuit
  • Hvdc converter comprising fullbridge cells for handling a DC side short circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] exist Figure 4 A power electronic converter 40 according to a first embodiment of the invention is shown in .

[0072] The power electronic converter 40 includes three converter branches 42 and a plurality of auxiliary units 44 .

[0073] Each converter branch 42 includes a first DC terminal 46 and a second DC terminal 48 and an AC terminal 50 .

[0074] In use, in each converter branch, the first DC terminal 46 and the second DC terminal 48 are connected to the positive and negative terminals of the DC network 52, respectively, which carry +Vdc / 2 and -Vdc / 2 respectively. Vdc / 2 voltage, while the AC terminal 50 is connected to a corresponding phase of a three-phase AC network 54 .

[0075]Each converter branch 42 defines a first branch portion 56 and a second branch portion 58 . In each converter branch 42 , a first branch portion 56 is connected in series between the first DC terminal 46 and the AC terminal 50 and a second branch portion 58 is connected in series b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A power electronic converter (40) for use in high voltage direct current power transmission and reactive power compensation comprises three converter limbs (42), each converter limb (42) including first and second DC terminals (46,48) for connection in use to a DC network (52) and an AC terminal (50) for connection in use to a respective phase of a three- phase AC network (54), each converter limb (42) defining first and second limb portions (56,58) being connected in series between the respective AC terminal (60) and a respective one of the first and second DC terminals (46,48), each limb portion (56,58) including at least one switching element (62,66) being controllable in use to facilitate power conversion between the AC and DC networks (52,54), the power electronic converter (40) further including a plurality of auxiliary units (44), each auxiliary unit (44); being operably associated with the respective phase of the AC network (54), each auxiliary unit (44) including at least one module (60) including a voltage source, the limb portions (56,58) being controllable in use to define at least one three-phase static synchronous compensator including at least one of the plurality of auxiliary units (44) in each branch of a star configuration, each of the first and/or second DC terminals (46,48) defining the neutral point of the respective star configuration.

Description

technical field [0001] The present invention relates to a power electronic converter for high voltage direct current (HVDC) power transmission and reactive power compensation. Background technique [0002] In power transmission networks, alternating current (AC) power is typically converted to direct current (DC) power for transmission via overhead lines and / or submarine cables. This conversion removes the need to compensate for the effect of AC capacitive loading imposed by the transmission line or cable, and thereby reduces the cost per kilometer of wire and / or cable. Therefore, the conversion from AC to DC becomes cost-effective when electricity needs to be transmitted over long distances. [0003] Conversion from AC power to DC power is also used in power transmission networks where it is necessary to interconnect AC networks operating at different frequencies. [0004] In any such power transmission network, every interface between AC and DC power requires a converter...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02M1/32H02J3/18H02M7/797
CPCH02J3/1857H02J3/36H02M1/32Y02E40/16H02M7/797Y02E60/60H02J5/00Y02E40/26H02M2007/4835Y02E40/10Y02E40/20H02M7/4835H02M1/0095H02J3/1878Y02T10/72H02J7/02
Inventor 戴维·雷金纳德·特雷纳威廉·克鲁克斯蒂莫西·查尔斯·格林米夏埃尔·马克·克洛德·梅兰
Owner ALSTOM TECH LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap