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1. 发明申请

US20060256587A1 Electric power converter 有权
标题翻译：电力转换器
公开(公告)号：US20060256587A1
公开(公告)日：2006-11-16
申请号：US11413004
申请日：2006-04-28
申请人： Gunnar Asplund , Ying Hafner , Johan Lindberg , Peter Lundberg , Jan Svensson , Rolf Palsson
发明人： Gunnar Asplund , Ying Hafner , Johan Lindberg , Peter Lundberg , Jan Svensson , Rolf Palsson
IPC分类号： H02M5/45
CPC分类号： H02M5/4585 , H02J3/36 , H02M7/5395 , H02M7/7575 , H02M2001/0054 , Y02B70/1491 , Y02E60/60
摘要： A voltage source converter for high power application containing a plurality of valves, each valve containing a plurality of extinguishable semiconducting elements, and a valve control unit containing a computer and a pulse-width modulator providing an executing control signal for controlling the semiconducting elements. The valve control unit includes a first control containing a first pulse-width modulator for providing a first pulse-width modulation signal, a second control containing a second pulse-width modulator for providing, a second pulse-width modulation signal, a mode detector, and a selector connected to the first and second pulse-width modulator for selecting in dependence of the mode detector the executing pulse-width modulation signal.
摘要翻译：一种用于高功率应用的电压源转换器，其包含多个阀，每个阀包含多个可熄灭的半导体元件，以及包含计算机和脉宽调制器的阀控制单元，其提供用于控制半导体元件的执行控制信号。阀控制单元包括第一控制器，其包含用于提供第一脉冲宽度调制信号的第一脉冲宽度调制器，包含第二脉冲宽度调制器的第二控制器，用于提供第二脉冲宽度调制信号模式检测器，以及选择器，连接到第一和第二脉冲宽度调制器，用于根据模式检测器选择执行脉宽调制信号。

2. 发明授权

US5917718A Method and apparatus for eliminating overmodulation in a power plant 失效
标题翻译：消除发电厂过调制的方法和装置
公开(公告)号：US5917718A
公开(公告)日：1999-06-29
申请号：US950763
申请日：1997-10-15
申请人： Rolf Palsson , Kjell Svensson
发明人： Rolf Palsson , Kjell Svensson
IPC分类号： H02J3/36 , H02J5/00 , H02M7/5395 , H02M7/757
CPC分类号： H02M7/7575 , H02J5/00 , H02M7/5395 , Y02E60/60
摘要： A method and apparatus for eliminating overmodulation in a power plant is provided. The power plant has a direct voltage network connected to at least one alternating voltage network through a station. The station is adapted to transmit power between the direct voltage network and the alternating voltage network and includes at least one converter. The converter is adapted to convert direct voltage into alternating voltage and convert alternating voltage into direct voltage. The method comprises the steps of calculating a reference alternating voltage and measuring a direct voltage between two poles of a direct voltage side of the station. The reference voltage is divided by half of the direct voltage and this quotient is compared with a predetermined value. When the quotient exceeds the predetermined value, a first signal is sent to a means for controlling the converter. In response to receiving the first signal, the converter is controlled to increase consumption of reactive power on the alternating voltage side of the station.
摘要翻译：提供一种用于消除发电厂过调制的方法和装置。发电厂具有通过站连接到至少一个交流电压网络的直流电压网络。该站适于在直流电压网络和交流电压网络之间传输电力，并且包括至少一个转换器。转换器适用于将直流电压转换为交流电压，并将交流电压转换为直流电压。该方法包括以下步骤：计算参考交流电压并测量站的直流电压侧的两极之间的直流电压。将参考电压除以直流电压的一半，并将该商与预定值进行比较。当商超过预定值时，将第一信号发送到用于控制转换器的装置。响应于接收到第一信号，控制转换器以增加车站交流电压侧的无功功率消耗。

3. 发明授权

US5870293A System for signalling power unbalance between electric power stations 失效
标题翻译：发电站信号功率不平衡的系统
公开(公告)号：US5870293A
公开(公告)日：1999-02-09
申请号：US950765
申请日：1997-10-15
申请人： Kjell Svensson , Rolf Palsson
发明人： Kjell Svensson , Rolf Palsson
IPC分类号： H02J3/36 , H02J13/00 , H02M5/45
CPC分类号： H02J3/36 , H02J13/0003 , Y02E60/60
摘要： A system for transmitting electric power between a direct voltage network and alternating voltage networks through VSC-converters. A first station which transmits electric power is in voltage regulating mode. Switching members at a second station are adapted to be alternatingly switched in and out upon occurrence of a sudden change of power so as to alternatingly connect one of the poles of the direct voltage network through an associated resistance to ground. A ground current generated therethrough is detected by a ground current measuring member of the first station, which is thereby informed about the unbalance. The first station then takes corrective measures to reduce or eliminate the unbalance.
摘要翻译：一种通过VSC转换器在直流电压网络和交流电压网络之间传输电力的系统。传输电力的第一站处于电压调节模式。在第二站处的切换构件适于在发生突然的功率变化时交替地切换和切换，以便将直流电压网络的极点之一交替地连接到与地相关联的电阻。通过第一站的接地电流测量构件来检测通过其产生的接地电流，从而通知不平衡。然后，第一站采取纠正措施来减少或消除不平衡。

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