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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
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。
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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
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。
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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
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。
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4.发明授权Protecting apparatus for secondary excitation type variable speed AC generator/motor 失效二次励磁式变速交流发电机/电机保护装置
公开(公告)号：US4812729A
公开(公告)日：1989-03-14
申请号：US84805
申请日：1987-08-13
申请人： Akio Ito , Hidenori Sawa , Hiroshi Sugisaka , Shigeaki Hayashi , Hiroto Nakagawa , Yasuteru Oono , Eiji Haraguchi
发明人： Akio Ito , Hidenori Sawa , Hiroshi Sugisaka , Shigeaki Hayashi , Hiroto Nakagawa , Yasuteru Oono , Eiji Haraguchi
CPC分类号： H02H7/1216 , H02P9/007 , H02P9/10 , H02H7/1255
摘要： There is disclosed a protecting apparatus for a secondary excitation type variable speed AC generator/motor having a primary winding connected to an electric power system and a secondary winding each phase of which is AC excited by an independent power converter unit. The protecting apparatus is arranged to detect an electrical event which includes at least one of an overvoltage and overcurrent appearing at each phase of the secondary winding of the AC generator/motor, to decide whether the detected electrical event meets a predetermined condition and to close, when the electrical event detected in respect to any of phases of the secondary winding is decided as meeting the predetermined condition, a switch circuit connected in the corresponding phase of the secondary winding.
摘要翻译： 公开了一种用于次级励磁型变速交流发电机/电动机的保护装置，其具有连接到电力系统的初级绕组和每个相位由独立的功率转换器单元交流激励的次级绕组。 保护装置被设置为检测包括在AC发电机/电动机的次级绕组的每个相出现的过电压和过电流中的至少一个的电气事件，以确定检测到的电气事件是否满足预定条件并关闭， 当检测到相对于次级绕组中的任一阶段的电气事件被确定为满足预定条件时，连接在次级绕组的相应相位上的开关电路。
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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
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。
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公开(公告)号：US4754156A
公开(公告)日：1988-06-28
申请号：US109167
申请日：1987-10-16
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。
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公开(公告)号：US4870339A
公开(公告)日：1989-09-26
申请号：US144108
申请日：1988-01-15
申请人： Yosio Furukawa , Yasuhiro Yasaka , Osamu Nagura , Eiji Haraguchi , Hiroto Nakagawa , Yasuteru Oono
发明人： Yosio Furukawa , Yasuhiro Yasaka , Osamu Nagura , Eiji Haraguchi , Hiroto Nakagawa , Yasuteru Oono
CPC分类号： H02P9/007 , H02P9/42 , H02P2101/10 , Y10T307/735
摘要： A variable-speed power generating system comprises a variable-speed generator electrically connected at its primary winding to an electric power system and its secondary winding to the electric power system through a frequency converter and mechanically coupled to a driver driving the secondary side thereof, a phase detector generating an output signal representing a slip frequency in response to the application of a first input having a frequency component of an output generated from the primary winding of the variable-speed generator and a second input having a frequency component corresponding to the rotation speed of the driver, a controller controlling the frequency converter on the basis of a reference phase provided by the output signal of the phase detector, and regulating means for controlling the frequency converter so that, when the variable-speed generator is disconnected from the electric power system, the frequency applied to the secondary winding of the variable-speed generator may not deviate from a predetermined allowable range of variable frequency operation of the frequency converter.
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