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1.发明授权Distributed power supply system with harmonic signal generation for stabilization 有权分布式电源系统，具有谐波信号发生稳定公开(公告)号：US08743571B2
公开(公告)日：2014-06-03
申请号：US13271141
申请日：2011-10-11
CPC分类号： H02J3/01 , H02J3/383 , H02J3/386 , Y02E10/563 , Y02E10/763 , Y02E40/40
摘要： A distributed power supply system in which no simultaneous disconnection from the system occurs when a system voltage momentarily drops is provided. It includes an inverter circuit that converts a direct current power generated by a direct current power supply and that supplies the alternating current power to an alternating current power supply power system, and an inverter control circuit for carrying out PWM control of the inverter circuit, wherein the inverter control circuit includes a three-phase voltage command signal generation unit, that is configured of a three-phase fundamental wave signal generation unit that generates three-phase fundamental wave signals from two phase components of voltage detected by a voltage detector, and a third harmonic signal generation unit that adds together third harmonic components of respective phases, having a predetermined amplitude, generated based on the three-phase fundamental wave signals.
摘要翻译： 一种分布式供电系统，其中当系统电压瞬时下降时，不发生同时断开系统。 它包括一个逆变器电路，其将由直流电源产生的直流电力转换并将交流电力提供给交流电源电力系统;以及逆变器控制电路，用于执行逆变器电路的PWM控制，其中 逆变器控制电路包括三相电压指令信号生成单元，该三相电压指令信号生成单元由三相基本信号生成单元构成，该三相基本信号生成单元从由电压检测器检测的电压的两相分量生成三相基波信号， 三次谐波信号生成单元，其将具有预定幅度的各相的三次谐波分量相加，基于三相基本信号产生。
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公开(公告)号：US20110249475A1
公开(公告)日：2011-10-13
申请号：US13084528
申请日：2011-04-11
申请人： Kansuke FUJII , Toshiya Yamada , Masaki Katoh
发明人： Kansuke FUJII , Toshiya Yamada , Masaki Katoh
IPC分类号： H02H7/122
CPC分类号： H02H7/122 , H02J3/383 , H02M1/32 , H02M7/48 , H02M2001/322 , Y02E10/563
摘要： A grid-connected inverter includes first and second power conversion circuits, a contactor and a control circuit. The first conversion circuit converts a first DC voltage to a second DC voltage. The second conversion circuit converts the second DC voltage to an AC voltage. The contactor connects an output side of the second conversion circuit to a power system. The control circuit includes a decision circuit and controls start and stop operations of the conversion circuits, and opening and closing of the contactor. The decision circuit decides whether a condition of the contactor is abnormal by detecting, after the control circuit controls the contactor to be open, whether or not a value of the second DC voltage is less than a threshold value, and if the value of the second DC voltage is detected to be not less than the threshold value, decides that the condition of the contactor is abnormal.
摘要翻译： 并网逆变器包括第一和第二功率转换电路，接触器和控制电路。 第一转换电路将第一直流电压转换为第二直流电压。 第二转换电路将第二直流电压转换为交流电压。 接触器将第二转换电路的输出侧连接到电力系统。 控制电路包括判定电路，并控制转换电路的启动和停止操作以及接触器的打开和关闭。 决定电路通过在控制电路控制接触器打开之后检测第二直流电压的值是否小于阈值来判定接触器的状况是否异常，并且如果第二 检测到直流电压不小于阈值，判定接触器的状态异常。
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公开(公告)号：US08559201B2
公开(公告)日：2013-10-15
申请号：US13084528
申请日：2011-04-11
申请人： Kansuke Fujii , Toshiya Yamada , Masaki Katoh
发明人： Kansuke Fujii , Toshiya Yamada , Masaki Katoh
IPC分类号： H02H7/122
CPC分类号： H02H7/122 , H02J3/383 , H02M1/32 , H02M7/48 , H02M2001/322 , Y02E10/563
摘要： A grid-connected inverter includes first and second power conversion circuits, a contactor and a control circuit. The first conversion circuit converts a first DC voltage to a second DC voltage. The second conversion circuit converts the second DC voltage to an AC voltage. The contactor connects an output side of the second conversion circuit to a power system. The control circuit includes a decision circuit and controls start and stop operations of the conversion circuits, and opening and closing of the contactor. The decision circuit decides whether a condition of the contactor is abnormal by detecting, after the control circuit controls the contactor to be open, whether or not a value of the second DC voltage is less than a threshold value, and if the value of the second DC voltage is detected to be not less than the threshold value, decides that the condition of the contactor is abnormal.
摘要翻译： 并网逆变器包括第一和第二功率转换电路，接触器和控制电路。 第一转换电路将第一直流电压转换为第二直流电压。 第二转换电路将第二直流电压转换为交流电压。 接触器将第二转换电路的输出侧连接到电力系统。 控制电路包括判定电路，并控制转换电路的启动和停止操作以及接触器的打开和关闭。 决定电路通过在控制电路控制接触器打开之后检测第二直流电压的值是否小于阈值来判定接触器的状况是否异常，并且如果第二 检测到直流电压不小于阈值，判定接触器的状态异常。
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公开(公告)号：US08203813B2
公开(公告)日：2012-06-19
申请号：US12801876
申请日：2010-06-29
申请人： Kansuke Fujii , Toshiya Yamada , Masaki Katoh
发明人： Kansuke Fujii , Toshiya Yamada , Masaki Katoh
IPC分类号： H02H3/00
CPC分类号： H02J3/18 , H02J3/381 , H02J3/383 , H02J3/386 , H02J3/387 , H02J2001/004 , H02J2003/388 , H02M7/48 , Y02E10/563 , Y02E10/763 , Y02E40/30
摘要： During single operation of a distributed power supply system that has been disconnected from a commercial electric power system, a frequency increase monitoring circuit is operated and an instruction to output a larger amount of a constant reactive current is given to a reactive current controlling unit. After the output frequency of the distributed power supply exceeds a frequency increase level, the level of an active current is limited in accordance with the level of the outputted reactive current.
摘要翻译： 在已经从商用电力系统断开的分布式供电系统的单次运行中，运行增频监视电路，并且向无功电流控制单元输出更大量的无功电流的指令。 在分布式电源的输出频率超过频率增加电平之后，根据输出的无功电流的电平来限制有功电流的电平。
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公开(公告)号：US20100327822A1
公开(公告)日：2010-12-30
申请号：US12801876
申请日：2010-06-29
申请人： Kansuke Fujii , Toshiya Yamada , Masaki Katoh
发明人： Kansuke Fujii , Toshiya Yamada , Masaki Katoh
IPC分类号： G05F1/70
CPC分类号： H02J3/18 , H02J3/381 , H02J3/383 , H02J3/386 , H02J3/387 , H02J2001/004 , H02J2003/388 , H02M7/48 , Y02E10/563 , Y02E10/763 , Y02E40/30
摘要： During single operation of a distributed power supply system that has been disconnected from a commercial electric power system, a frequency increase monitoring circuit is operated and an instruction to output a larger amount of a constant reactive current is given to a reactive current controlling unit. After the output frequency of the distributed power supply exceeds a frequency increase level, the level of an active current is limited in accordance with the level of the outputted reactive current.
摘要翻译： 在已经从商用电力系统断开的分布式供电系统的单次运行中，运行增频监视电路，并且向无功电流控制单元输出更大量的无功电流的指令。 在分布式电源的输出频率超过频率增加电平之后，根据输出的无功电流的电平来限制有功电流的电平。
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公开(公告)号：US08928178B2
公开(公告)日：2015-01-06
申请号：US13179518
申请日：2011-07-09
申请人： Toshiya Yamada , Kansuke Fujii
发明人： Toshiya Yamada , Kansuke Fujii
CPC分类号： H02J3/381 , G01R31/026 , H02J2003/388 , Y10T307/729
摘要： With a method whereby reactive power is changed from a fluctuating output to a constant output by a frequency rise or fall monitor circuit stage level being exceeded, and an isolated operation is detected, a problem occurs with a small scale grid in that, as the frequency is liable to fluctuate due to a load fluctuation, there is liable to be a false detection of an isolated operation. In contrast, an abnormal frequency stage detection can be performed such that the frequency at a point when the rising edge of a reactive power fluctuation is detected, and the frequency at a point when the falling edge is detected, are detected sequentially, and an abnormal frequency stage detection is recognized when the order of the difference between the current detection value and the previous detection value is “increase”, “decrease”, “increase”.
摘要翻译： 通过超过频率上升或下降监视电路级电平，无功功率从波动输出变化到恒定输出的方法，并且检测到隔离操作，则在小尺度网格中出现问题，因为频率 由于载荷波动容易发生波动，容易成为隔离操作的错误检测。 相反，可以进行异常频率级检测，使得检测无功功率波动的上升沿时的频率以及检测到下降沿时的频率的频率，并且异常 当电流检测值与先前检测值的差的顺序为“增加”，“减小”，“增加”时，识别频率级检测。
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公开(公告)号：US09509145B2
公开(公告)日：2016-11-29
申请号：US14000720
申请日：2012-02-03
CPC分类号： H02J4/00 , H02J3/1814 , H02M7/53875 , Y02E40/18 , Y10T307/344
摘要： The disclosed distributed power supply system does not become disconnected from a grid simultaneously with others when the grid voltage falls instantaneously. In a distributed power supply device which controls an inverter circuit 10 based on a control signal obtained by comparing a predetermined carrier signal and voltage command signals of three phases and which converts DC power to AC power and supplies the AC power to a power grid of a three-phase AC power supply, fundamental wave signals of three phases are generated from a grid voltage of the three-phase AC power supply. A reference cosine wave signal is generated from the fundamental wave signals of three phases. A third harmonic signal is generated from the reference cosine wave signal and the fundamental wave signals of three phases. The three-phase fundamental wave signals and the third harmonic signal are added to generate voltage command signals of three phases.
摘要翻译： 当电网电压瞬时下降时，所公开的分布式供电系统不会与其他电网同时断开。 在基于通过比较预定载波信号和三相电压指令信号而获得的控制信号来控制逆变器电路10的分布式电源装置中，并将DC电力转换为AC电力并将AC电力提供给 三相交流电源，由三相交流电源的电网电压产生三相基波信号。 从三相的基波信号产生参考余弦波信号。 从参考余弦波信号和三相基波信号产生三次谐波信号。 相加三相基波信号和三次谐波信号，产生三相电压指令信号。
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公开(公告)号：US20130328398A1
公开(公告)日：2013-12-12
申请号：US14000720
申请日：2012-02-03
IPC分类号： H02J4/00
CPC分类号： H02J4/00 , H02J3/1814 , H02M7/53875 , Y02E40/18 , Y10T307/344
摘要： The disclosed distributed power supply system does not become disconnected from a grid simultaneously with others when the grid voltage falls instantaneously. In a distributed power supply device which controls an inverter circuit 10 based on a control signal obtained by comparing a predetermined carrier signal and voltage command signals of three phases and which converts DC power to AC power and supplies the AC power to a power grid of a three-phase AC power supply, fundamental wave signals of three phases are generated from a grid voltage of the three-phase AC power supply. A reference cosine wave signal is generated from the fundamental wave signals of three phases. A third harmonic signal is generated from the reference cosine wave signal and the fundamental wave signals of three phases. The three-phase fundamental wave signals and the third harmonic signal are added to generate voltage command signals of three phases.
摘要翻译： 当电网电压瞬时下降时，所公开的分布式供电系统不会与其他电网同时断开。 在基于通过比较预定载波信号和三相电压指令信号而获得的控制信号来控制逆变器电路10的分布式电源装置中，并将DC电力转换为AC电力并将AC电力提供给 三相交流电源，由三相交流电源的电网电压产生三相基波信号。 从三相的基波信号产生参考余弦波信号。 从参考余弦波信号和三相基波信号产生三次谐波信号。 相加三相基波信号和三次谐波信号，产生三相电压指令信号。
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9.发明授权公开(公告)号：US06326983B1
公开(公告)日：2001-12-04
申请号：US08553232
申请日：1995-11-07
申请人： Dennis L. Venable , Michael R. Campanelli , William A. Fuss , James E. Bollman , Takashi Nagao , Toshiya Yamada , Kazuya Yamada
发明人： Dennis L. Venable , Michael R. Campanelli , William A. Fuss , James E. Bollman , Takashi Nagao , Toshiya Yamada , Kazuya Yamada
IPC分类号： G06F314
CPC分类号： G06T11/60 , Y10S715/967
摘要： A method and device for describing a complex color raster image as a collection of objects in a hierarchical and device independent format can be carried out using an apparatus for generating an image capable of being displayed and printed.
摘要翻译： 可以使用用于生成能够显示和打印的图像的装置来执行用于将复杂彩色光栅图像描述为分层和设备无关格式的对象的集合的方法和装置。
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公开(公告)号：US07634473B2
公开(公告)日：2009-12-15
申请号：US11339519
申请日：2006-01-26
CPC分类号： G06F17/30011 , Y10S707/99932 , Y10S707/99935 , Y10S707/99943
摘要： A document retrieval apparatus for retrieving documents from a document database in which documents are registered, and displaying the retrieved documents, the document retrieval apparatus includes: a keyword input unit for accepting input of a retrieval keyword for retrieving the documents; a document retrieval unit for retrieving the documents from the document database on the basis of the retrieval keyword; a keyword weight calculation unit for calculating those weights of the retrieval keyword which feature contents of the retrieved documents, as keyword weights; and a display process unit for displaying the retrieved documents in a state where the retrieval keyword contained in the retrieved documents is presented in display aspects conforming to the keyword weights.
摘要翻译： 一种文档检索装置，用于从其中登记文档的文档数据库中检索文档，并显示所检索的文档，所述文档检索装置包括：关键字输入单元，用于接受用于检索文档的检索关键字的输入; 文档检索单元，用于根据检索关键字从文档数据库检索文档; 关键词权重计算单元，用于计算将检索到的文档的内容作为关键字权重的检索关键字的权重; 以及显示处理单元，用于在检索到的文档中包含的检索关键字的显示方面呈现符合关键字权重的状态下显示检索到的文档。
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