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公开(公告)号：EP1911143B1
公开(公告)日：2019-07-24
申请号：EP06761247.3
申请日：2006-07-31
申请人： ABB RESEARCH LTD.
IPC分类号： H02M7/219
CPC分类号： H02M7/219 , H02M5/297 , H02M7/4807 , H02M7/49 , H02M2001/0074
摘要： The present invention is concerned with a power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters (20, 20', 20") connected between an AC supply line (11) and a traction transformer (21). The transformer is operable at a transformer nominal frequency below 3 kHz and above the AC line frequency. On the secondary side of the transformer, more than one parallel-connected secondary converter (22, 22', 22") are provided and connected to a DC link (23). In case of failure of one of the secondary converters, the multilevel AC/DC converter may continue to operate with reduced power delivered by the remaining operating levels.
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2.发明授权
公开(公告)号：EP1797439B1
公开(公告)日：2013-02-27
申请号：EP05784457.3
申请日：2005-09-27
申请人： ABB RESEARCH LTD.
IPC分类号： H02M1/04 , H02M7/505 , H02M7/5387 , G01R19/175
CPC分类号： H02M1/083 , G01R19/175 , H02M7/53871
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公开(公告)号：EP1911143A1
公开(公告)日：2008-04-16
申请号：EP06761247.3
申请日：2006-07-31
申请人： ABB RESEARCH LTD.
IPC分类号： H02M7/219
CPC分类号： H02M7/219 , H02M5/297 , H02M7/4807 , H02M7/49 , H02M2001/0074
摘要： The present invention is concerned with a power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters (20, 20', 20") connected between an AC supply line (11) and a traction transformer (21). The transformer is operable at a transformer nominal frequency below 3 kHz and above the AC line frequency. On the secondary side of the transformer, more than one parallel-connected secondary converter (22, 22', 22") are provided and connected to a DC link (23). In case of failure of one of the secondary converters, the multilevel AC/DC converter may continue to operate with reduced power delivered by the remaining operating levels.
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公开(公告)号：EP1911142A1
公开(公告)日：2008-04-16
申请号：EP06761249.9
申请日：2006-07-31
申请人： ABB RESEARCH LTD.
摘要： The present invention is concerned with the provision of the necessary power to the gate-drives controlling the semiconductor devices of a multilevel converter used in railway traction applications. A power loop with a power-loop emitter and a power-loop receptor located in different housings and connected via a power-loop conductor that is at least partially exterior to both housings is proposed. By means of a current transformer inductively coupling the conductor to the emitter or receptor, the power-loop also provides for electrical insulation between the emitter and the receptor. The fact that emitter and receptor are distant from each other offers greater flexibility in the positioning and design of the galvanic separation between the emitter and the receptor or the supplied gate-drive, respectively. In particular, the local voltages of converter levels ranging up to the supply voltage of e.g. 21 kV RMS of the multilevel converter can thus be insulated from the global earth potential of the power-loop emitter. Several power-loop receptors can be coupled to the same power-loop conductor and. thus fed by the same power-loop emitter.
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6.发明公开
公开(公告)号：EP1797439A1
公开(公告)日：2007-06-20
申请号：EP05784457.3
申请日：2005-09-27
申请人： ABB RESEARCH LTD.
IPC分类号： G01R19/175 , H02M7/42
CPC分类号： H02M1/083 , G01R19/175 , H02M7/53871
摘要： The invention relates to a converter that is operated with at least two converter arms, the current flowing alternately via at least one first and at least one second converter arm. According to the invention, the point of zero crossing in the converter is determined by a measurement of the current using a device for determining the point of zero crossing, the measured current value is compared with a current threshold value in the device, and an estimated duration Δt from the attainment of the current threshold value to the attainment of the zero crossing point is calculated by the device, using the time at which the current value reaches the current threshold value prior to the zero crossing point.
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