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公开(公告)号：US5666275A
公开(公告)日：1997-09-09
申请号：US701986
申请日：1996-08-23
CPC分类号： H02M7/7575 , Y02E60/60
摘要： A control system for a power conversion system composed of a plurality of power converters, each of which is connected between one of a plurality of AC power systems and a DC line to exchange an electric power between them, respectively. The control system is composed of a plurality of control units, each of which includes units for detecting an AC current flowing between the AC power system and the power converter, an AC voltage of the AC power system, and a DC voltage of the power converter, and a unit for detecting an active power and a reactive power exchanged between the power converter and the AC power system. Each of the control units further includes an active power control unit for generating an active current command so that the DC voltage drops with the increase of one of the active power and a DC current, a unit for setting a reactive power reference, a reactive power control unit for comparing the reactive power reference and the reactive power to obtain a reactive power difference and for generating a reactive current command so as to bring the reactive power difference close to zero, a current control unit for generating a plurality of output voltage commands so as to coincide the AC current to the active and reactive current commands, and a gate control unit for switching the semiconductor switching devices in the power converter based on the output voltage commands.
摘要翻译： 一种用于由多个功率转换器组成的功率转换系统的控制系统，每个功率转换器分别连接在多个AC电力系统中的一个和DC线之间，以分别在它们之间交换电力。 控制系统由多个控制单元组成，每个控制单元包括用于检测在AC电力系统和功率转换器之间流动的AC电流的单元，AC电力系统的AC电压和电力转换器的DC电压 以及用于检测有功功率和在功率转换器和AC电力系统之间交换的无功功率的单元。 每个控制单元还包括有源电力控制单元，用于产生有功电流指令，使得直流电压随着有功功率和直流电流之一的增加而下降，用于设置无功功率基准的单元，无功功率 控制单元，用于比较无功功率参考和无功功率以获得无功功率差，并产生无功电流指令以使无功功率差接近零;电流控制单元，用于产生多个输出电压指令， 以使AC电流与有功和无功电流指令一致;以及门控制单元，用于基于输出电压命令切换功率转换器中的半导体开关器件。
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2.发明授权
公开(公告)号：US5675482A
公开(公告)日：1997-10-07
申请号：US600922
申请日：1996-02-27
CPC分类号： H02M1/38 , G01R31/40 , G01R31/42 , H02H7/1225
摘要： The accident detection circuit of the present invention is such that in a voltage-type self-excited power converter composed of anode reactors 13 and 23 connected in series, respectively, to power semiconductor elements 11 and 21 of self turn off type connected in series, there are provided anode reactor voltage direction-detecting circuits 16 and 26 which detect, respectively, that the voltage in the direction generated in the anode reactors 13 and 23 exceeds a predetermined value when the current flowing in the direction of from the anode to the cathode of the each element 11, 21 increases, anode current direction-detecting circuits 17 and 27 which detect, respectively, that the current flows in the direction of from the anode to the cathode of the each element 11, 21, delay circuits 18 and 28 which delay, respectively, the output signal of each arm current direction-detecting circuit by a certain period of time, and AND circuits 19 and 29 which designate the output signal of the each anode reactor voltage direction-detecting circuit 16, 26 and the output signal of the each delay circuit 18, 28, respectively, as the input signal, and the output signal of each AND circuit 19, 29 is designated as the accident detection signal of the converter.
摘要翻译： PCT No.PCT / JP95 / 01278 Sec。 371日期1996年2月27日 102（e）日期1996年2月27日PCT归档1995年6月27日PCT公布。 公开号WO96 / 00463 日期1996年1月4日本发明的事故检测电路使得在由阳极反应器13和23组成的电压型自激电力转换器分别串联连接到功率半导体元件11和21的自我关闭 串联连接的阳极电抗器电压方向检测电路16和26分别提供阳极反应器13和23中产生的方向上的电压超过预定值，当电流从 每个元件11,21的阴极的阳极增加，阳极电流方向检测电路17和27分别检测电流从每个元件11,21的阳极到阴极的方向流动， 分别延迟各臂电流方向检测电路的输出信号一定时间的延迟电路18和28，以及指定输出的AND电路19和29 每个阳极电抗器电压方向检测电路16,26的信号和每个延迟电路18,28的输出信号作为输入信号，并且每个AND电路19,29的输出信号被指定为事故 转换器的检测信号。
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3.发明授权
公开(公告)号：US5946205A
公开(公告)日：1999-08-31
申请号：US953376
申请日：1997-10-17
CPC分类号： H02M7/19 , Y10T307/707
摘要： A power conversion system including a plurality of converter transformers. AC side windings of the converter transformers are connected in series for connecting to an AC power system. The power conversion system further includes a plurality of series connected voltage source type self-commutated converters for converting AC power into DC power or DC power into AC power. Each of the voltage source type self-commutated converters is connected to one of DC side windings of the converter transformers, respectively. The power conversion system further includes a plurality of DC voltage sources. Each of DC output sides of the voltage source type self-commutated converters is connected to one of the DC voltage sources, respectively. The power conversion system further includes a control system for controlling the voltage source type self-commutated converters such that each of DC voltages of the voltage source type self-commutated converters follows to one of DC voltage reference values for the voltage source type self-commutated converters, respectively.
摘要翻译： 一种电力转换系统，包括多个转换器变压器。 变流器变压器的交流侧绕组串联连接到交流电源系统。 电力转换系统还包括多个串联连接的电压源型自换向转换器，用于将AC电力转换为DC电力或将DC电力转换为AC电力。 每个电压源式自整流转换器分别与变流器变压器的直流侧绕组中的一个相连。 电力转换系统还包括多个DC电压源。 电压源式自整流转换器的每个直流输出侧分别与一个直流电压源相连。 电力转换系统还包括控制系统，用于控制电压源型自换流变换器，使得电压源型自换向转换器的每个直流电压遵循电压源式自换向的直流电压参考值之一 转换器。
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公开(公告)号：US06812591B2
公开(公告)日：2004-11-02
申请号：US09903678
申请日：2001-07-13
IPC分类号： H02J700
CPC分类号： H02J7/345 , Y10T307/625
摘要： A power control device includes an electric power storage device connected across a power supply line for a load and including at least one electric double layer capacitor (EDLC) bank and a secondary battery combined with the EDLC bank, the EDLC bank including a plurality of parallel-connected rows of EDLC unit cells, each of the rows including a plurality of series-connected EDLC unit cells, and a control device controlling the electric power storage device so that when an input power to the electric power storage device is interrupted, the EDLC bank supplies electric power to the load for an initial period of the power interrupt and subsequently, the secondary battery supplies electric power to the load.
摘要翻译： 一种功率控制装置，包括：一个连接在用于负载的电源线上并且包括至少一个双电层电容器（EDLC）组和与所述EDLC组合的二次电池的电力存储装置，所述EDLC组包括多个并联 连接的EDLC单元电池行，每行包括多个串联连接的EDLC单元，以及控制电力存储装置的控制装置，使得当蓄电装置的输入电力中断时，EDLC 银行在电源中断的初始阶段向负载供电，随后二次电池向负载供电。
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5.发明授权Control system for power converter with prevention of DC magnetization in the transformer 失效电力变换器控制系统，防止变压器中的直流磁化
公开(公告)号：US5450310A
公开(公告)日：1995-09-12
申请号：US274454
申请日：1994-07-13
申请人： Noriko Kawakami
发明人： Noriko Kawakami
CPC分类号： G05F1/44 , H02M7/1623
摘要： A control system for a power converter which is composed of a plurality of self-turn-off devices and is connected to an outer system through a transformer provided with a core. The control system includes an output voltage instruction value generating circuit for generating an instruction value for an output voltage of the power converter. The control system also includes a correction circuit for correcting the instruction value based on a magnetic flux relating value of the core of the transformer to generate a corrected instruction value for the output voltage of the power converter. The control system further includes a gate pulse generating circuit for generating a gate pulse based on the corrected instruction value. The gate pulse is applied to the self-turn-off devices of the power converter to control the output voltage of the power converter. Whereby DC magnetization of the transformer is suppressed even for the case when DC component is generated by the outer system.
摘要翻译： 一种用于电力转换器的控制系统，其由多个自关断装置组成，并且通过设有核心的变压器连接到外部系统。 控制系统包括用于产生功率转换器的输出电压的指令值的输出电压指令值产生电路。 控制系统还包括校正电路，用于基于变压器的磁芯的磁通量相关值来校正指令值，以产生用于功率转换器的输出电压的校正指令值。 该控制系统还包括一个门脉冲产生电路，用于根据修正的指令值产生一个门脉冲。 栅极脉冲被施加到功率转换器的自关断装置以控制功率转换器的输出电压。 即使在由外部系统产生直流分量的情况下，也抑制了变压器的直流磁化。
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