-
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。
-
公开(公告)号：US20110090720A1
公开(公告)日：2011-04-21
申请号：US12904317
申请日：2010-10-14
申请人： Kansuke FUJII
发明人： Kansuke FUJII
IPC分类号： H02M1/36
摘要： In a unit inverter system where multiple unit inverters are connected in parallel, the quantity of operating unit inverters is determined in accordance with an amount of power to be converted. A gate signal of a semiconductor switching element of a unit inverter is turned off after an output current of the inverter is reduced when reducing the quantity of inverter units, thereby improving the partial load efficiency of the system without an adverse effect on the system. A regulator connected to the inverter determines dead time of the inverter according to the output current value and an average output current value of the unit inverters, waits for the determined dead time so as to reduce the output current of the unit inverter, and then turns off the gate signal.
摘要翻译： 在并联连接多个单元逆变器的单元逆变器系统中，根据要转换的功率量来确定操作单元逆变器的数量。 当减少逆变器单元的数量时，在逆变器的输出电流减小之后，单位逆变器的半导体开关元件的栅极信号被关断，从而提高系统的部分负载效率，而不会对系统产生不利影响。 与变频器连接的调节器根据输出电流值和单位逆变器的平均输出电流值确定变频器的死区时间，等待确定的死区时间，以降低单元逆变器的输出电流，然后转向 关门信号。
-
公开(公告)号：US08750004B2
公开(公告)日：2014-06-10
申请号：US13313253
申请日：2011-12-07
申请人： Kansuke Fujii
发明人： Kansuke Fujii
IPC分类号： H02M7/48
CPC分类号： H02M7/487
摘要： Aspects of the invention can include capacitors which series-divide the voltage of a DC power source, an inverter circuit formed by bridge-connecting semiconductor switching elements to which diodes are antiparallel-connected, and bidirectional switches connected between a connection point of the capacitors and the AC output terminals of the inverter circuit. When the voltage of the DC power source is lower than a prescribed value, the inverter circuit can be caused to operate as an ordinary three-phase inverter, and when the voltage of the DC power source is higher than a prescribed value the inverter circuit can be caused to operate as a V-connected inverter, and when caused to operate as a V-connected inverter, a halted phase can be switched in sequence according to line voltages or output currents.
摘要翻译： 本发明的方面可以包括将直流电源的电压串联分压的电容器，由二极管反并联连接的半导体开关元件的桥接连接形成的反相器电路以及连接在电容器的连接点之间的双向开关 变频器电路的交流输出端子。 当直流电源的电压低于规定值时，可以使逆变器电路作为普通三相逆变器工作，并且当直流电源的电压高于规定值时，逆变器电路 导致作为V型逆变器工作，当作为V型逆变器工作时，可以根据线路电压或输出电流依次切换暂停相。
-
公开(公告)号：US08384364B2
公开(公告)日：2013-02-26
申请号：US12904317
申请日：2010-10-14
申请人： Kansuke Fujii
发明人： Kansuke Fujii
IPC分类号： G05F1/59
摘要： In a unit inverter system where multiple unit inverters are connected in parallel, the quantity of operating unit inverters is determined in accordance with an amount of power to be converted. A gate signal of a semiconductor switching element of a unit inverter is turned off after an output current of the inverter is reduced when reducing the quantity of inverter units, thereby improving the partial load efficiency of the system without an adverse effect on the system. A regulator connected to the inverter determines dead time of the inverter according to the output current value and an average output current value of the unit inverters, waits for the determined dead time so as to reduce the output current of the unit inverter, and then turns off the gate signal.
摘要翻译： 在并联连接多个单元逆变器的单元逆变器系统中，根据要转换的功率量来确定操作单元逆变器的数量。 当减少逆变器单元的数量时，在逆变器的输出电流减小之后，单位逆变器的半导体开关元件的栅极信号被关断，从而提高系统的部分负载效率，而不会对系统产生不利影响。 与变频器连接的调节器根据输出电流值和单位逆变器的平均输出电流值确定变频器的死区时间，等待确定的死区时间，以降低单元逆变器的输出电流，然后转向 关门信号。
-
公开(公告)号：US20120007436A1
公开(公告)日：2012-01-12
申请号：US13179518
申请日：2011-07-09
申请人： Toshiya YAMADA , Kansuke Fujii
发明人： Toshiya YAMADA , Kansuke Fujii
IPC分类号： H02J3/38
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。
-
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。
-
公开(公告)号：US08547073B2
公开(公告)日：2013-10-01
申请号：US13525264
申请日：2012-06-15
申请人： Kansuke Fujii
发明人： Kansuke Fujii
CPC分类号： H02M3/1588 , H02J7/345 , H02M2001/0077 , Y02B40/90 , Y02B70/1466
摘要： A DC power supply system delivers a DC output that has a neutral point and is higher than the input voltage of a single DC power supply, by a circuit with series-connected switching elements. The DC power supply system addresses the problem of imbalance between the voltage between a positive terminal and the neutral point and the voltage between a negative terminal and the neutral point. In operational control of the DC power supply system, a capacitor voltage between the neutral point and the positive terminal and a capacitor voltage between the neutral point and the negative terminal are compared, and four switching elements are operated to equalize the two capacitor voltages.
摘要翻译： 直流电源系统通过具有串联开关元件的电路提供具有中性点并高于单个直流电源的输入电压的直流输出。 直流电源系统解决了正极和中性点之间的电压与负极和中性点之间的电压之间的不平衡问题。 在直流电源系统的运行控制中，比较中性点和正极端子之间的电容电压以及中性点和负极端子之间的电容电压，并且操作四个开关元件以均衡两个电容器电压。
-
公开(公告)号：US20120262957A1
公开(公告)日：2012-10-18
申请号：US13271141
申请日：2011-10-11
IPC分类号： H02M1/12
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。
-
9.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。
-
公开(公告)号：US20120319664A1
公开(公告)日：2012-12-20
申请号：US13525264
申请日：2012-06-15
申请人： Kansuke FUJII
发明人： Kansuke FUJII
IPC分类号： G05F1/618
CPC分类号： H02M3/1588 , H02J7/345 , H02M2001/0077 , Y02B40/90 , Y02B70/1466
摘要： A DC power supply system delivers DC output having a neutral point and higher than the input voltage of a single DC power supply by a circuit with series-connected switching elements. The DC power supply system addresses the problem of imbalance between the voltage between a positive terminal and the neutral point and the voltage between a negative terminal and the neutral point. In operational control of the DC power supply system, a capacitor voltage between the neutral point and the positive terminal and a capacitor voltage between the neutral point and the negative terminal are compared, and four switching elements are operated to equalize the two capacitor voltages.
摘要翻译： 直流电源系统通过具有串联开关元件的电路提供具有中性点并高于单个DC电源的输入电压的DC输出。 直流电源系统解决了正极和中性点之间的电压与负极和中性点之间的电压之间的不平衡问题。 在直流电源系统的运行控制中，比较中性点和正极端子之间的电容电压以及中性点和负极端子之间的电容电压，并且操作四个开关元件以均衡两个电容器电压。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.011 秒)
