专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4952852A Power system and synchronizing breakers for a variable speed generator motor system 失效
标题翻译：用于变速发电机电机系统的电力系统和同步断路器
公开(公告)号：US4952852A
公开(公告)日：1990-08-28
申请号：US229995
申请日：1988-08-09
申请人： Akira Bando , Osamu Nagura , Keiji Saito , Ikuro Miyashita , Hashime Nagai , Hiroto Nakagawa , Yasuteru Oono
发明人： Akira Bando , Osamu Nagura , Keiji Saito , Ikuro Miyashita , Hashime Nagai , Hiroto Nakagawa , Yasuteru Oono
IPC分类号： H02P9/00 , H02H7/06
CPC分类号： H02H7/06
摘要： A generator-motor apparatus with economical protection measures for use in a variable speed pumping-up electric power plant, having a main transformer, a secondary winding of which is coupled to an electric power system, a power system breaker connected to a primary winding of the main transformer, a syncronizing breaker connected in series with the power system breaker, a generator-motor, a rotor of which is mechanically coupled to the pump-turbine and an armature winding of which is connected to the power system through the synchronizing breaker, the power system breaker and the main transformer, and an excitation circuit, including a frequency converter for supplying a field winding of the generator-motor with AC voltage of the variable frequency and a converter transformer for feeding the converter, which is branched from a junction of the power system breaker and the synchronizing breaker.

2. 发明授权

US4980629A AC-excited generator/motor apparatus 失效
标题翻译：交流励磁发电机/电机装置
公开(公告)号：US4980629A
公开(公告)日：1990-12-25
申请号：US319708
申请日：1989-03-07
申请人： Akira Bando , Osamu Nagura , Shigehiro Kayukawa , Junichi Shiozaki , Akira Momiyama , Hiroto Nakagawa , Yasuteru Oono
发明人： Akira Bando , Osamu Nagura , Shigehiro Kayukawa , Junichi Shiozaki , Akira Momiyama , Hiroto Nakagawa , Yasuteru Oono
IPC分类号： H02P9/14 , H02H7/06 , H02P9/00 , H02P9/10 , H02P9/42
CPC分类号： H02P9/42 , H02P9/007 , H02P9/105 , H02P2101/10
摘要： An AC-excited generator/motor apparatus comprising; an AC-excited generator/motor having an armature mounting thereon; an armature winding connected to an AC power system and a rotor mounting thereon; and an exciting winding excited by an AC current. An exciting device for supplying a controlled AC exciting current to the exciting winding comprises; a device for calculating a real slip frequency based on a difference between the phase of an armature voltage appearing on the armature winding and the rotational phase of the rotor; and a device for controlling the exciting current supplied to the exciting winding from the exciting means in response to a deviation of the real slip frequency from a predetermined allowable range of slip frequencies so as to restore the real slip frequency within the allowable range of slip frequencies.
摘要翻译：一种AC励磁发电机/电动机装置，包括：其上安装有电枢的AC励磁发电机/电动机; 连接到AC电力系统的电枢绕组和安装在其上的转子; 和由交流电流激发的激励绕组。用于向励磁绕组提供控制的交流励磁电流的励磁装置包括：基于电枢绕组上出现的电枢电压的相位与转子的旋转相位之间的差来计算实际转差频率的装置; 以及用于响应于实际滑移频率与预定的滑差频率的允许范围的偏差来控制从励磁装置提供给励磁绕组的励磁电流的装置，以便将滑差频率恢复在滑差频率的允许范围内。

3. 发明授权

US5265002A Fault protection for a multiphase bridge power converter 失效
标题翻译：多相桥式电源转换器的故障保护
公开(公告)号：US5265002A
公开(公告)日：1993-11-23
申请号：US757334
申请日：1991-09-10
申请人： Akira Bando , Chikara Tanaka , Keiji Saito , Tadao Kawai , Eizo Kita , Keiichi Mitsuhashi , Yasuteru Oono , Hiroto Nakagawa
发明人： Akira Bando , Chikara Tanaka , Keiji Saito , Tadao Kawai , Eizo Kita , Keiichi Mitsuhashi , Yasuteru Oono , Hiroto Nakagawa
IPC分类号： H02H7/12 , H02H7/125 , H02M7/12 , H02M7/155 , H02M7/162
CPC分类号： H02H7/125
摘要： A semiconductor power conversion system comprising a multiphase bridge circuit which includes semiconductor devices having a controllable firing function and a reverse blocking characteristic, a gate control circuit which gives firing commands to the semiconductor devices, a short circuiting switch in which switching devices having a controllable firing function and a reverse blocking characteristic are connected in parallel with a DC output side of the multiphase bridge circuit, and a protection control device for performing a control for protecting the multiphase bridge circuit. The protection control device includes a device for detecting a commutation failure of the multiphase bridge circuit, and a device in response to the detection of the commutation failure for producing a blocking command for blocking the firing of the semiconductor devices of the multiphase bridge circuit and producing a short-circuiting command for firing the switching device which is short-circuited which bypasses current of the commutation failure. The protection control device further includes a device for detecting ending of a short-circuit based on the ceasing of current conduction of the short circuiting switch and for halting the blocking of the firing of the semiconductor devices of the multiphase bridge circuit.
摘要翻译：一种半导体功率转换系统，包括多相桥式电路，其包括具有可控的点火功能和反向阻断特性的半导体器件，向半导体器件发出触发命令的栅极控制电路，其中具有可控射击的开关器件的短路开关功能和反向阻断特性与多相桥式电路的直流输出侧并联连接，以及保护控制装置，用于进行保护多相桥式电路的控制。保护控制装置包括用于检测多相桥式电路的换向故障的装置，以及响应于检测到换向失败的装置，用于产生用于阻断多相桥式电路的半导体装置的点火的阻塞命令并产生用于点燃短路的开关器件的短路命令，其绕过换向故障的电流。保护控制装置还包括用于基于短路开关的电流导通的停止以及用于停止多相桥式电路的半导体装置的点火来检测短路结束的装置。

4. 发明授权

US5099409A Semiconductor electric power conversion system enabling fault and/or overtemperature protection 失效
标题翻译：半导体电力转换系统启用故障和/或过压保护
公开(公告)号：US5099409A
公开(公告)日：1992-03-24
申请号：US496302
申请日：1990-03-20
申请人： Akira Bando , Chikara Tanaka , Keiji Saito , Tadao Kawai , Eizo Kita , Keiichi Mitsuhashi , Yasuteru Ohno , Hiroto Nakagawa
发明人： Akira Bando , Chikara Tanaka , Keiji Saito , Tadao Kawai , Eizo Kita , Keiichi Mitsuhashi , Yasuteru Ohno , Hiroto Nakagawa
IPC分类号： H02H7/12 , H02H7/122 , H02H7/125 , H02M7/162 , H02P9/00
CPC分类号： H02M7/1623 , H02H7/1255
摘要： An improved electric power conversion system comprising a multi-phase bridge circuit composed of semiconductors such as thyristors and an associated firing circuit. It is so constructed that: if the AC input current Iac flowing in the bridge circuit is equal to or larger in value that the DC output current Idc flowing out of the bridge circuit, it will be decided than an inner defect or fault is caused, and possible expansion of inner defect will be prevented by disabling the firing circuit to extinguish the thyristors in the bridge circuit, and if the AC input current Iac is smaller than the DC output current Idc in value, the bridge is permitted to continue the operation of power conversion, thus eliminating unnecessary interruption which otherwise would be caused by exterior disturbances. Also, an improved electric power conversion system may be equipped with a device to prevent an adverse effect from being caused by abnormal rise of thyristors' temperature.

5. 发明授权

US4743826A Pumping-up generator/motor system and method of operation of the same 失效
标题翻译：起动发电机/电机系统及其运行方法
公开(公告)号：US4743826A
公开(公告)日：1988-05-10
申请号：US852742
申请日：1986-04-16
申请人： Akira Bando , Kenichi Ono , Hiroshi Kashiwazaki , Hiroshi Sugisaka , Eiji Haraguchi , Hiroto Nakagawa
发明人： Akira Bando , Kenichi Ono , Hiroshi Kashiwazaki , Hiroshi Sugisaka , Eiji Haraguchi , Hiroto Nakagawa
IPC分类号： H02J15/00 , F03B15/00 , F03B15/02 , H02P9/00 , H02P9/42 , H02P7/42
CPC分类号： H02P9/42 , H02P9/007 , H02P2101/10 , Y02E10/226 , Y10T307/735
摘要： In a pumping-up generator/motor system comprising an induction generator/motor, at least one cyclo-converter connected to the secondary winding of the induction generator motor for controlling the rotational speed of the generator/motor in the motor mode and for maintaining the output frequency thereof in the generator mode at a constant level, the center of the speed range of the generator/motor in the generator mode is set near the synchronous speed thereof and a plurality of converter units constituting each cyclo-converter are connected in parallel in the generator mode, and in series in the motor mode thereby allowing the capacity of the cyclo-converter to be made smaller.
摘要翻译：在包括感应发电机/电动机的起动发电机/电动机系统中，至少一个连接到感应发电机电动机的次级绕组的循环转换器，用于控制发动机/电动机在电动机模式下的转速，在发电机模式下的输出频率为恒定电平，发电机模式中发电机/电动机的转速范围的中心设定在其同步速度附近，构成每个循环变换器的多个转换器单元并联连接发电机模式，并且在电动机模式下串联，从而允许使循环转换器的容量更小。

6. 发明授权

US4823018A Control system for variable speed water-wheel generator apparatus 失效
标题翻译：变速水轮发电机控制系统
公开(公告)号：US4823018A
公开(公告)日：1989-04-18
申请号：US46725
申请日：1987-05-07
申请人： Takao Kuwabara , Akira Bando , Eiji Haraguchi , Hiroto Nakagawa
发明人： Takao Kuwabara , Akira Bando , Eiji Haraguchi , Hiroto Nakagawa
IPC分类号： F03B15/06 , H02P9/04 , H02P9/42 , F02D29/06 , F01D15/10
CPC分类号： H02P9/42 , H02P2101/10 , Y02E10/226
摘要： A control system for a variable speed water turbine generator apparatus includes a first function generator that is responsive to an output command signal. The first function generator produces a rotation number command signal. A speed adjuster produces an output signal in accordance with a different signal between the first function generator output and an actual rotation number. An adder adds the generator output command signal to the speed adjuster output signal to determine an overall output command signal. An output aduster produces an output signal in accordance with a difference between the adder output and an actual power output of the generator for controlling the firing angles of the frequency converter. A second function generator, responsive to the generator output command signal, determines an opening command signal for the variable opening vanes. An opening adjuster produces an output signal in accordance with a difference signal between the second function generator output and an actual opening of the variable opening vanes to control the variable opening vanes. The first and second function generators increase command values for the rotation number and the variable opening vanes, respectively, as the output command signal increases. The frequency converter is further controlled to maintain the rotation number within a predetermined operation range.
摘要翻译：用于变速水轮发电机装置的控制系统包括响应输出指令信号的第一功能发生器。第一函数发生器产生旋转数指令信号。速度调节器根据第一功能发生器输出和实际旋转数之间的不同信号产生输出信号。加法器将发生器输出命令信号与速度调节器输出信号相加，以确定总输出命令信号。输出电流源根据加法器输出与用于控制变频器的点火角的发电机的实际功率输出之间的差产生输出信号。响应于发电机输出指令信号的第二功能发生器确定可变开启叶片的开启指令信号。打开调节器根据第二功能发生器输出与可变开启叶片的实际开口之间的差分信号产生输出信号，以控制可变开启叶片。第一功能发生器和第二功能发生器分别随着输出指令信号的增加而增加旋转数和可变开启叶片的指令值。进一步控制变频器以将转数维持在预定的操作范围内。

7. 发明授权

US4766360A Induction generator/motor system 失效
标题翻译：感应发电机/电机系统
公开(公告)号：US4766360A
公开(公告)日：1988-08-23
申请号：US911072
申请日：1986-09-24
申请人： Eiji Haraguchi , Hiroto Nakagawa , Akira Bando , Yoji Tanaka , Kenichi Ono , Hiroshi Kashiwazaki , Hiroshi Sugisaka
发明人： Eiji Haraguchi , Hiroto Nakagawa , Akira Bando , Yoji Tanaka , Kenichi Ono , Hiroshi Kashiwazaki , Hiroshi Sugisaka
IPC分类号： H02J3/28 , H02H7/06 , H02M5/27 , H02P9/00 , H02P27/16 , H02P5/40
CPC分类号： H02M5/27 , H02P27/16
摘要： An induction generator/motor system has an induction machine connected at its secondary side to a cyclo-converter. An induced voltage develops when the cyclo-converter pauses during a transient phenomenon occurring in the system. When the induced voltage exceeds a predetermined voltage range which covers the maximum output voltage derivable from the cyclo-converter, the polarity of thyristor converters of the cyclo-converter is switched such that the induced voltage is applied to a thyristor converter to be rendered conductive next in forward relationship therewith, thereby preventing occurrence of an overvoltage.
摘要翻译：感应发电机/电动机系统具有在二次侧连接到循环转换器的感应电机。当系统中发生瞬态现象时，循环转换器暂停时，产生感应电压。当感应电压超过覆盖从循环转换器得到的最大输出电压的预定电压范围时，转换器的晶闸管转换器的极性被切换，使得感应电压被施加到晶闸管转换器以使其继续导通与其正向关系，从而防止发生过电压。

8. 发明授权

US4754156A Control apparatus for variable-speed hydraulic power generating system 失效
标题翻译：变速液压发电系统控制装置
公开(公告)号：US4754156A
公开(公告)日：1988-06-28
申请号：US109167
申请日：1987-10-16
申请人： Junichi Shiozaki , Akira Bando , Takao Kuwabara , Eiji Haraguchi , Hiroto Nakagawa
发明人： Junichi Shiozaki , Akira Bando , Takao Kuwabara , Eiji Haraguchi , Hiroto Nakagawa
IPC分类号： H02P9/00 , F03B15/06 , F03B15/08 , F03B15/16 , H02P9/04 , F01D15/10
CPC分类号： F03B15/08 , Y02E10/226
摘要： Disclosed is a control apparatus for a variable-speed hydraulic power generating system comprising a variable-speed a.c. electric generator connected to an a.c. electric power system and a hydraulic machine system including a water turbine for driving the generator and a guide vane for controlling an amount of water supplied to the water turbine. The control apparatus comprises a frequency converter connected between the electric power system and the generator for controlling electric power supplied from the generator to the electric power system, control means operating in response to at least an externally applied power generation command signal for controlling, on one hand, the frequency converter thereby controlling the electric power supplied from the generator to the electric power system and generating, on the other hand, a guide-vane opening command signal for controlling the guide vane thereby controlling the amount of water supplied to the water turbine, and means for reducing resonance which may occur in the hydraulic machine system when the rotation speed of the water turbine changes in response to a change of the externally applied power generation output command signal.
摘要翻译：公开了一种用于变速液压发电系统的控制装置，其包括变速交流电。发电机连接到一个交流电电力系统和包括用于驱动发电机的水轮机和用于控制供给到水轮机的水量的导向叶片的液压机系统。控制装置包括连接在电力系统和发电机之间的变频器，用于控制从发电机向电力系统供电的电力，控制装置响应于至少外部施加的发电命令信号而工作，用于一个所述变频器由此控制从发电机向电力系统供给的电力，另一方面，产生用于控制导向叶片的导向叶片开度指令信号，从而控制向水轮机供水量以及当水轮机的转速响应于外部施加的发电输出指令信号的变化而变化时，可以在液压机械系统中发生可能发生的共振的装置。

9. 发明授权

US4694189A Control system for variable speed hydraulic turbine generator apparatus 失效
标题翻译：变速水轮发电机控制系统
公开(公告)号：US4694189A
公开(公告)日：1987-09-15
申请号：US911131
申请日：1986-09-24
申请人： Eiji Haraguchi , Hiroto Nakagawa , Akira Bando , Takao Kuwahara , Haruo Nohara , Kenichi Ono
发明人： Eiji Haraguchi , Hiroto Nakagawa , Akira Bando , Takao Kuwahara , Haruo Nohara , Kenichi Ono
IPC分类号： H02P9/00 , H02P9/42 , F01D15/10
CPC分类号： H02P9/007 , H02P9/42
摘要： A control system for variable speed hydraulic turbine generator apparatus comprises an induction generator connected at its primary side to an AC power line system, a secondary excitation controller connected to the secondary side of the induction generator and being responsive to a generator output command signal supplied externally to supply to the induction generator an excitation current which causes the induction generator to generate AC power at the same frequency as that on the AC power line system, a hydraulic turbine for rotating the induction generator, a guide valve for regulating the amount of water supplied to the hydraulic turbine, a rotation speed detector for detecting a rotation speed of the induction generator, a rotation speed command calculator for receiving a hydraulic turbine running condition signal inclusive of the external generator output command signal and calculating an optimum rotation speed command, a rotation speed controller for comparing the optimum rotation speed command with a rotation speed signal from the rotation speed detector and producing a guide valve opening control signal in accordance with a difference between the optimum rotation speed command and the rotation speed signal, and a guide valve driver responsive to the guide valve opening control signal to deliver to the guide valve a signal which controls the opening of the guide valve in accordance with the guide valve opening control signal.
摘要翻译：一种用于变速水轮机发电机装置的控制系统包括：其初级侧连接到AC电力线系统的感应发电机，连接到感应发电机的次级侧的辅助励磁控制器，并响应于外部提供的发电机输出指令信号向感应发电机提供励磁电流，其使感应发电机产生与AC电力线系统相同的频率的AC电力，用于旋转感应发电机的水轮机，用于调节供水量的导向阀水轮机，用于检测感应发电机的转速的转速检测器，用于接收包括外部发电机输出指令信号的水轮机行驶状态信号并计算最佳转速指令的转速指令运算器，旋转速度控制器，用于比较最佳腐烂并且根据最佳转速指令和转速信号之间的差产生导向开阀控制信号，以及响应于导向阀打开控制的导向阀驱动器信号，以向导阀传送根据导向阀打开控制信号控制导向阀打开的信号。

10. 发明授权

US08896261B2 Doubly-fed generator and doubly-fed electric machine 有权
标题翻译：双馈发电机和双馈电机
公开(公告)号：US08896261B2
公开(公告)日：2014-11-25
申请号：US13421259
申请日：2012-03-15
申请人： Akira Bando , Masaya Ichinose , Yasuhiro Kiyofuji , Yasuaki Nakayama
发明人： Akira Bando , Masaya Ichinose , Yasuhiro Kiyofuji , Yasuaki Nakayama
IPC分类号： H02P9/00 , H02J3/00 , H02P27/08
CPC分类号： H02H7/065 , H02P9/007 , H02P9/102 , H02P2101/10 , H02P2101/15
摘要： The excitation overcurrent detection unit for the doubly-fed electric machine is provided with a function to determine an excitation current magnitude relationship among three phases. The firing pulse is held to on-state or off-state to cause the largest-current phase and the second-largest-current phase to charge the DC capacitor by the operation of diodes. The conduction ratio of the third-largest-current phase or minimum current phase is controlled according to the detected current value to protect against a possible short-circuit across the DC capacitor. When the voltage of the DC capacitor exceeds a preset value, the voltage is suppressed by operating active or passive power devices.
摘要翻译：用于双馈电机的励磁过电流检测单元具有确定三相之间的励磁电流大小关系的功能。点火脉冲保持在导通状态或截止状态，以通过二极管的操作使最大电流相位和第二大电流相位对直流电容器充电。根据检测到的电流值控制第三大电流相位或最小电流相位的导通比，以防止跨越直流电容器的可能的短路。当直流电容器的电压超过预设值时，通过操作有源或无源功率器件来抑制电压。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式