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    • 1. 发明授权
    • Apparatus for automatically adjusting offset correction values for
current detectors
    • 用于自动调整电流检测器偏移校正值的装置
    • US5319294A
    • 1994-06-07
    • US65232
    • 1993-05-24
    • Masahiro OhtoHisashi KinoshitaNin KakeYoshihiro Ino
    • Masahiro OhtoHisashi KinoshitaNin KakeYoshihiro Ino
    • G05B19/23G05B19/405
    • G05B19/237G05B2219/37285G05B2219/37391G05B2219/37543G05B2219/41132G05B2219/42033G05B2219/42062
    • An automatic offset adjusting apparatus for current detectors in a digital controller for a servo motor is constructed so that, when errors occur in offset correction values due to a temperature change and the like while the servo motor is in operation, an electrical angle detecting unit detects a ripple of the torque of the servo motor, on the basis of a ripple of a torque command value, and detects a first electrical angle, where the torque command value becomes maximum, and a second electrical angle, where the torque command value becomes minimum, based on an electrical angle signal of the servo motor, a judgement unit judges whether or not offset correction errors have occurred on the basis of a difference between the first and second electrical angles, and, if the judgement unit judges that the offset correction errors have occurred, a correction unit adds adjustment values for the offset correction values corresponding to the first electrical angle to the respective offset correction values to update the offset correction values, whereby the correction of the offset correction values is automatically carried out even while the servo motor is in operation, thereby preventing generation of the ripple of the torque of the servo motor.
    • 一种用于伺服电动机的数字控制器中的电流检测器的自动偏移调整装置被构造成使得当伺服电动机运行时由于温度变化等导致的偏移校正值中出现错误时,电角度检测单元检测 基于转矩指令值的波动,伺服电动机的转矩的波动,并且检测转矩指令值变为最大的第一电角度和转矩指令值变为最小的第二电角度 基于伺服电动机的电角度信号,判断单元基于第一和第二电角度之间的差来判断偏移校正误差是否发生,并且如果判断单元判断偏移校正误差 校正单元将对应于第一电角度的偏移校正值的调整值加到相应的偏移校正值 以更新偏移校正值,由此即使在伺服电动机运行时也自动执行偏移校正值的校正,从而防止产生伺服电动机的转矩纹波。
    • 2. 发明授权
    • Control system for DC motors
    • 直流电机控制系统
    • US4523134A
    • 1985-06-11
    • US608249
    • 1984-05-08
    • Hisashi KinoshitaHideki YoshitakeNin Kake
    • Hisashi KinoshitaHideki YoshitakeNin Kake
    • H02M1/00H02M1/38H02P7/00H02P5/00
    • H02M1/38H02P7/04Y10S388/915
    • In a DC motor control system, switching element driving circuits are connected to respective base circuits of four switching elements arranged to form a bridge circuit which has a DC motor connected thereto as an electric load thereon, and an output signal interlocking circuit is provided in each paired driving circuits associated with the corresponding paired switching elements which are connected in series across a DC power source, respectively, thereby preventing simultaneous conduction of each paired switching elements. By virtue of the provision of the output signal interlocking circuits, it is possible to realize a PWM control system for DC motors with a simplified circuit construction and yet to thereby prevent power source short-circuiting trouble with elevated safety and reliability.
    • 在直流电动机控制系统中,开关元件驱动电路连接到四个开关元件的基本电路,四个开关元件布置成形成桥接电路,该桥式电路具有作为其上的电负载连接到其上的直流电动机,并且每个基板电路设置有输出信号互锁电路 与分别跨直流电源串联连接的对应配对开关元件相关联的成对驱动电路,从而防止每个成对的开关元件的同时导通。 通过提供输出信号互锁电路,可以实现具有简化电路结构的直流电动机的PWM控制系统,从而防止电源短路故障,提高了安全性和可靠性。
    • 6. 发明授权
    • Distributed power supply system
    • 分布式供电系统
    • US08751055B2
    • 2014-06-10
    • US13203910
    • 2010-12-10
    • Nin KakeHiroaki KakuKeiichi SatoHiroshi NagasatoAkihito Ootani
    • Nin KakeHiroaki KakuKeiichi SatoHiroshi NagasatoAkihito Ootani
    • G05D11/00G01R19/00G06F11/30
    • H02J3/38
    • A distributed power supply system of the present invention comprises a distributed power supply apparatus (4) for supplying electric power to a customer load (2) interactively with a commercial electric power utility (1); an internal load (7) supplied with electric power from the commercial electric power utility; a current sensor (5a, 5b) for detecting a magnitude of a current and a direction of the current, the current being in a location closer to the commercial electric power utility than the internal load and the customer load; and a controller (8); wherein in a state where the distributed power supply apparatus 84) is not generating the electric power, the controller causes the internal load (7) to actuate, performs determination control as to an installation state of the current sensor (5a, 5b) plural times based on a value detected by the current sensor, and performs the determination control in such a manner that at least one of plural intervals at which the determination control is performed is set to an interval other than an integral multiple of another interval of the plural intervals.
    • 本发明的分布式供电系统包括:与商用电力公用设施(1)交互地向客户负载(2)供电的分布式供电装置(4); 从商业电力公司提供电力的内部负载(7); 用于检测电流的大小和电流的方向的电流传感器(5a,5b),所述电流处于比内部负载和客户负载更接近商业电力公用事业的位置; 和控制器(8); 其中,在分散式供电装置84不发生电力的状态下,控制器使内部负载(7)动作,对电流传感器(5a,5b)的安装状态多次进行判定控制 基于由当前传感器检测到的值,并且执行确定控制,使得执行确定控制的多个间隔中的至少一个被设置为除了多个间隔中的另一间隔的整数倍之外的间隔 。
    • 7. 发明授权
    • Power converter and fuel cell system including the same
    • 电力转换器和燃料电池系统包括相同的
    • US08625318B2
    • 2014-01-07
    • US13144061
    • 2011-02-09
    • Nin KakeKeiichi SatoHiroaki KakuHiroshi NagasatoAkihito OotaniToru Kushisaka
    • Nin KakeKeiichi SatoHiroaki KakuHiroshi NagasatoAkihito OotaniToru Kushisaka
    • H02M7/537
    • H01M8/04037H01M8/04253H01M8/0606H01M8/0618H02J3/387H02J2001/004H02M3/337H02M7/48H02M7/4807H02M2001/007
    • A power converter of the present invention is configured to convert DC power generated by a power generator (1) into AC power. The power converter includes: a boost converter circuit (3) configured to boost an output voltage of the power generator (1); an inverter circuit (5) configured to convert an output voltage of the boost converter circuit (3) into AC power and to interconnect the AC power with a power system (2); a buck converter circuit (8) configured to perform power conversion of output power of the boost converter circuit (3) and to supply resultant power to an internal load (60); and a controller (9). The controller (9) is configured to control the output voltage of the boost converter circuit (3) to be lower than or equal to a second voltage value which is less than the maximum value of AC voltage of the power system (2), in a case of supplying output power of the power generator (1) to the internal load (60) via the boost converter circuit (3) and the buck converter circuit (8).
    • 本发明的电力转换装置将由发电机(1)生成的直流电力转换为交流电力。 功率转换器包括:升压转换器电路(3),被配置为升高发电机(1)的输出电压; 逆变器电路(5),被配置为将所述升压转换器电路(3)的输出电压转换为交流电力并将所述交流电力与电力系统(2)互连; 降压转换器电路(8),被配置为对所述升压转换器电路(3)的输出功率进行功率转换,并将合成功率提供给内部负载(60); 和控制器(9)。 控制器(9)被配置为将升压转换器电路(3)的输出电压控制在小于或等于小于电力系统(2)的交流电压的最大值的第二电压值, 通过升压转换器电路(3)和降压转换器电路(8)将发电机(1)的输出功率提供给内部负载(60)的情况。
    • 9. 发明申请
    • POWER CONVERTER AND FUEL CELL SYSTEM INCLUDING THE SAME
    • 电源转换器和燃料电池系统,包括它们
    • US20130108938A1
    • 2013-05-02
    • US13144061
    • 2011-02-09
    • Nin KakeKeiichi SatoHiroaki KakuHiroshi NagasatoAkihito OotaniToru Kushisaka
    • Nin KakeKeiichi SatoHiroaki KakuHiroshi NagasatoAkihito OotaniToru Kushisaka
    • H01M8/04H01M8/06H02M7/48
    • H01M8/04037H01M8/04253H01M8/0606H01M8/0618H02J3/387H02J2001/004H02M3/337H02M7/48H02M7/4807H02M2001/007
    • A power converter of the present invention is configured to convert DC power generated by a power generator (1) into AC power. The power converter includes: a boost converter circuit (3) configured to boost an output voltage of the power generator (1); an inverter circuit (5) configured to convert an output voltage of the boost converter circuit (3) into AC power and to interconnect the AC power with a power system (2); a buck converter circuit (8) configured to perform power conversion of output power of the boost converter circuit (3) and to supply resultant power to an internal load (60); and a controller (9). The controller (9) is configured to control the output voltage of the boost converter circuit (3) to be lower than or equal to a second voltage value which is less than the maximum value of AC voltage of the power system (2), in a case of supplying output power of the power generator (1) to the internal load (60) via the boost converter circuit (3) and the buck converter circuit (8).
    • 本发明的电力转换装置将由发电机(1)生成的直流电力转换为交流电力。 功率转换器包括:升压转换器电路(3),被配置为升高发电机(1)的输出电压; 逆变器电路(5),被配置为将所述升压转换器电路(3)的输出电压转换为交流电力并将所述交流电力与电力系统(2)互连; 降压转换器电路(8),被配置为对所述升压转换器电路(3)的输出功率进行功率转换,并将合成功率提供给内部负载(60); 和控制器(9)。 控制器(9)被配置为控制升压转换器电路(3)的输出电压低于或等于小于电力系统(2)的交流电压的最大值的第二电压值, 通过升压转换器电路(3)和降压转换器电路(8)将发电机(1)的输出功率提供给内部负载(60)的情况。
    • 10. 发明申请
    • DISTRIBUTED POWER GENERATION SYSTEM
    • 分布式发电系统
    • US20120286759A1
    • 2012-11-15
    • US13574966
    • 2011-01-31
    • Akihito OotaniHiroaki KakuHiroshi NagasatoNin KakeKeiichi SatoToru Kushisaka
    • Akihito OotaniHiroaki KakuHiroshi NagasatoNin KakeKeiichi SatoToru Kushisaka
    • H02J3/00
    • H02J3/44G01R21/133G01R29/18
    • A distributed power generation system of the present invention is a distributed power generation system connected to a three-wire electric power system including first to third electric wires, the third electric wire being a neutral wire, and includes: an electric power generator (105); a connection mechanism (110) configured to connect any two electric wires among the first to third electric wires (101a to 101c) to an internal electric power load (111); a first current sensor (109a) set so as to detect a current value of the first electric wire (101a); a second current sensor (109b) set so as to detect a current value of the second electric wire (101b); and an operation controller (112) configured to determine the electric wire on which each of the first current sensor (109a) and the second current sensor (109b) is provided and an installing direction of each of the first current sensor (109a) and the second current sensor (109b) by determining whether or not the amount of change in the current value detected by each of the first current sensor (109a) and the second current sensor (109b) before and after the connection mechanism (110) connects any two electric wires to the internal electric power load (111) is the amount corresponding to the power consumption of the internal electric power load (111).
    • 本发明的分布式发电系统是与包括第一至第三电线,第三电线为中性线的三线制电力系统连接的分布式发电系统,包括:发电机(105) ; 连接机构(110),被配置为将所述第一至第三电线(101a至101c)中的任何两条电线连接到内部电力负载(111); 设置为检测第一电线(101a)的电流值的第一电流传感器(109a); 设置为检测第二电线(101b)的电流值的第二电流传感器(109b); 以及操作控制器(112),其被配置为确定其上设置有所述第一电流传感器(109a)和所述第二电流传感器(109b)中的每一个的电线,以及所述第一电流传感器(109a)和 第二电流传感器(109b)通过确定在连接机构(110)之前和之后由第一电流传感器(109a)和第二电流传感器(109b)中的每一个检测到的电流值的变化量是否连接任何两个 与内部电力负载(111)的电线是对应于内部电力负载(111)的功耗的量。