公开(公告)号：US08536722B1

公开(公告)日：2013-09-17

申请号：US13752965

申请日：2013-01-29

Applicant: Tsuyoshi Wakasa ,  Hisanobu Shinoda ,  Hidekazu Ichinose ,  Yukio Yamashita ,  Takatoshi Matsushita

Inventor： Tsuyoshi Wakasa ,  Hisanobu Shinoda ,  Hidekazu Ichinose ,  Yukio Yamashita ,  Takatoshi Matsushita

IPC: H02P9/04 ,  H02P11/00

CPC classification number: H02P9/02 ,  F03D7/0284 ,  F03D9/25 ,  F03D9/257 ,  F03D9/28 ,  F05B2260/406 ,  H02J3/386 ,  H02P9/04 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763 ,  Y02P80/158

Abstract: In a wind turbine generator, the rotation of the rotor is speeded up by a hydraulic pump and a hydraulic motor and is transferred to a synchronous generator. In a state in which the wind turbine generator is interconnected to a utility grid, and the synchronous generator reaches a synchronous speed, if no mechanical power is transferred to the synchronous generator, a wind-turbine control system operates the synchronous generator as a synchronous condenser, thus controlling the magnitude of the field current of the synchronous generator. Thus, the wind turbine generator can supply reactive power to the utility grid without adding new equipment, such as a reactive power compensator using a semiconductor switch.

Abstract translation: 在风力涡轮发电机中，转子的旋转由液压泵和液压马达加速，并被传送到同步发电机。 在风力发电机与公用电网互连并且同步发电机达到同步转速的状态下，如果没有机械动力传递到同步发电机，则风力发电机组控制系统将同步发电机作为同步电容器 ，从而控制同步发电机励磁电流的大小。 因此，风力发电机可以向公用电网提供无功功率，而不需要增加新的设备，例如使用半导体开关的无功功率补偿器。

公开(公告)号：US08502406B2

公开(公告)日：2013-08-06

申请号：US13549995

申请日：2012-07-16

Applicant: Tsuyoshi Wakasa ,  Akira Yasugi ,  Takatoshi Matsushita ,  Takehiro Naka ,  Takumi Nakashima

Inventor： Tsuyoshi Wakasa ,  Akira Yasugi ,  Takatoshi Matsushita ,  Takehiro Naka ,  Takumi Nakashima

IPC: F03D9/00

CPC classification number: H02P9/48 ,  F03D7/0272 ,  F03D7/028 ,  F03D7/042 ,  F05B2270/1016 ,  H02J3/1892 ,  H02J3/382 ,  H02J3/386 ,  H02P9/04 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763

Abstract: A variable-speed power generator includes a prime mover that generates motive power by using natural energy; a wound-rotor induction generator that includes a stator having a primary winding and a rotor having a secondary winding, which are connected to a power grid, the generator generating electric power based on the motive power generated by the prime mover; a power converter connected to the stator and the rotor; and a controller controlling wound-rotor induction generator. The controller responds to instructions, sent by the power grid, for supplying reactive power to the power grid. The response of the controller to an instruction for supplying reactive power to the power grid may include imposing limitations on the reactive power supplied by the power converter to the power grid and causing the wound-rotor induction generator to operate at a rotation speed set higher than or equal to a synchronous speed.

Abstract translation: 变速发电机包括通过使用自然能产生动力的原动机; 绕组转子感应发电机，其包括具有初级绕组的定子和具有次级绕组的转子，其连接到电网，所述发电机基于由所述原动机产生的动力产生电力; 连接到定子和转子的功率转换器; 以及控制绕线转子感应发电机的控制器。 控制器响应由电网发送的用于向电网提供无功功率的指令。 控制器对于向电网提供无功功率的指令的响应可能包括对功率转换器向电网提供的无功功率施加限制，并使绕组转子感应发电机以高于 或等于同步速度。

公开(公告)号：US20130195653A1

公开(公告)日：2013-08-01

申请号：US13361502

申请日：2012-01-30

Applicant: Kentaro HAYASHI ,  Naoyuki NAGAI ,  Tsuyoshi WAKASA

Inventor： Kentaro HAYASHI ,  Naoyuki NAGAI ,  Tsuyoshi WAKASA

IPC: F01D7/00

CPC classification number: F03D7/0296 ,  F03D80/00 ,  F05B2260/964 ,  Y02E10/72

Abstract: There are provided a TMD adjusted to damp vibration in a natural frequency of a wind turbine, an AVC adjusted to damp vibration in a variable frequency of turbulent wind flowing into the wind turbine and/or a frequency of a rotation speed of a wind-turbine blade, and a pitch-angle control portion provided with a correction portion which adjusts a damping frequency of the AVC. The AVC is configured to obtain the damping force by changing the pitch angle of the wind-turbine blade.

Abstract translation: 提供了调整为在风力涡轮机的固有频率中阻尼振动的TMD，AVC被调节以阻止流入风力涡轮机的湍流的可变频率中的振动和/或风力涡轮机的转速的频率 叶片，以及设置有调节AVC的阻尼频率的校正部的俯仰角控制部。 AVC被配置为通过改变风力涡轮机叶片的俯仰角来获得阻尼力。

公开(公告)号：US20130193934A1

公开(公告)日：2013-08-01

申请号：US13768538

申请日：2013-02-15

Applicant: Shinji ARINAGA ,  Tsuyoshi WAKASA ,  Takatoshi MATSUSHITA

Inventor： Shinji ARINAGA ,  Tsuyoshi WAKASA ,  Takatoshi MATSUSHITA

IPC: H02P9/10

CPC classification number: H02P9/105 ,  F03D7/0276 ,  F03D7/0284 ,  F03D7/042 ,  F03D9/255 ,  F05B2270/337 ,  Y02E10/723 ,  Y02E10/725

Abstract: It is an object to stabilize a utility grid even when an unexpected fluctuation in the frequency of the utility grid occurs. A wind turbine generator includes a rotor that rotates by wind power, a generator that is driven by rotation of the rotor, and a control device that controls a power output of the generator to increase while a rotational speed of the generator decreases when a frequency of a utility grid becomes smaller than or equal to a predetermined rated frequency and when the rotational speed of the generator is greater than or equal to a first predetermined value. In this way, even when the frequency of the utility grid fluctuates, the frequency fluctuation can be suppressed, and the utility grid can be stabilized.

Abstract translation: 即使发生公用电网的频率的意外波动，也是使公用电网稳定的目标。 风力发电机包括通过风力转动的转子，通过转子的旋转而驱动的发电机，以及控制装置，当发电机的转速降低时，发电机的功率输出减小， 公用电网变得小于或等于预定的额定频率，并且当发电机的转速大于或等于第一预定值时。 这样，即使公用电网的频率波动，也可以抑制频率波动，能够使公用电网稳定。

公开(公告)号：US20130093186A1

公开(公告)日：2013-04-18

申请号：US13709755

申请日：2012-12-10

Applicant: Shinji ARINAGA ,  Takatoshi MATSUSHITA ,  Tsuyoshi WAKASA ,  Masaaki SHIBATA ,  Akira YASUGI

Inventor： Shinji ARINAGA ,  Takatoshi MATSUSHITA ,  Tsuyoshi WAKASA ,  Masaaki SHIBATA ,  Akira YASUGI

IPC: F03D7/00

CPC classification number: F03D7/00 ,  F03D7/028 ,  F03D7/048 ,  F05B2240/40 ,  H02J3/1885 ,  H02J3/386 ,  H02P23/26 ,  H02P2201/15 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E40/32

Abstract: An object is to improve the accuracy of power factor adjustment. Power-factor command values corresponding to individual wind turbines are determined by correcting a predetermined power-factor command value for an interconnection node using power factor correction levels set for the individual wind turbines.

Abstract translation: 目的是提高功率因数调整的精度。 通过使用针对各个风力涡轮机设定的功率因数校正水平来校正互连节点的预定功率因子命令值来确定与各个风力涡轮机对应的功率因子指令值。

公开(公告)号：US20120205912A1

公开(公告)日：2012-08-16

申请号：US13454666

申请日：2012-04-24

Applicant: Tsuyoshi WAKASA ,  Hisanobu SHINODA ,  Masayuki HASHIMOTO ,  Yukio YAMASHITA ,  Takehiro NAKA ,  Akira YASUGI ,  Takumi NAKASHIMA

Inventor： Tsuyoshi WAKASA ,  Hisanobu SHINODA ,  Masayuki HASHIMOTO ,  Yukio YAMASHITA ,  Takehiro NAKA ,  Akira YASUGI ,  Takumi NAKASHIMA

IPC: H02P9/10

CPC classification number: F03D7/0284 ,  F03D9/255 ,  F05B2270/1041 ,  F05B2270/335 ,  F05B2270/337 ,  Y02E10/72

Abstract: A wind-turbine control device controls a wind turbine generator in which a rotor having a plurality of blades receives wind and rotates. The generator generates electrical power through the rotation of the rotor. The electrical power is supplied to a utility grid, and electric energy to be supplied to the utility grid can be changed according to a change in the frequency of the utility grid. The wind-turbine control device includes a subtracter to calculate a frequency change, which is the difference between a measurement value of the frequency of generated output power of the wind turbine generator and a set value of the frequency of the generated output power of the wind turbine generator. The wind-turbine control device further includes a limiter to limit a change in the electrical power corresponding to the frequency change calculated by the subtracter, based on the rotational speed of the generator.

Abstract translation: 风力涡轮机控制装置控制风力涡轮发电机，其中具有多个叶片的转子接收风并旋转。 发电机通过转子的旋转产生电力。 电力被提供给公用电网，并且可以根据公用电网频率的变化来改变供给公用电网的电能。 风力涡轮机控制装置包括用于计算频率变化的减法器，其是风力涡轮发电机的产生的输出功率的频率的测量值与所产生的风力输出功率的频率的设定值之间的差 涡轮发电机。 风力涡轮机控制装置还包括限制器，其基于发电机的转速来限制对应于由减法器计算的频率变化的电力变化。

公开(公告)号：US20120104755A1

公开(公告)日：2012-05-03

申请号：US13194139

申请日：2011-07-29

Applicant: Masayuki HASHIMOTO ,  Hisanobu SHINODA ,  Tsuyoshi WAKASA ,  Akira YASUGI ,  Takumi NAKASHIMA

Inventor： Masayuki HASHIMOTO ,  Hisanobu SHINODA ,  Tsuyoshi WAKASA ,  Akira YASUGI ,  Takumi NAKASHIMA

IPC: H02P9/04

CPC classification number: F03D7/0284 ,  F03D7/048 ,  F05B2270/10711 ,  F05B2270/335 ,  F05B2270/337 ,  Y02E10/723

Abstract: To prevent disconnection of wind turbine generators due to changes in wind conditions even if the wind turbine generators is operated to limit the power output. A plurality of wind turbine generators that generate electric power by the rotation of rotors are provided in a wind farm are interconnected and are operated while the power outputs are limited in advance so as to be able to further supply electric power to a utility grid in response to a decrease in the frequency or voltage of the utility grid. The rotational speed of the rotor, which is a physical quantity related to increase and decrease in the power output of the wind turbine generator, is measured for each of the wind turbine generators by a wind-turbine control system, and the limitation amount of the power output of the wind turbine generator is set for each of the wind turbine generators by a central control system on the basis of the rotational speed of the rotor measured.

Abstract translation: 为了防止由于风力发电机的变化而导致的风力发电机的断开，即使风力发电机被操作以限制功率输出。 在风力发电场中设置多个通过转子旋转产生电力的风力涡轮发电机相互连接并且在电力输出被预先限制的同时进行操作，以便能够响应地进一步向公用电网供电 降低公用电网的频率或电压。 通过风力涡轮机控制系统对每个风力涡轮发电机测量作为与风力发电机的功率输出的增加和减少相关的物理量的转子的转速，并且限制量 风力发电机的功率输出通过中央控制系统基于所测量的转子的转速而设定用于每个风力涡轮发电机。

公开(公告)号：US20110309622A1

公开(公告)日：2011-12-22

申请号：US13220121

申请日：2011-08-29

Applicant: Tsuyoshi WAKASA ,  Kazunari IDE ,  Yoshiyuki HAYASHI ,  Masaaki SHIBATA

Inventor： Tsuyoshi WAKASA ,  Kazunari IDE ,  Yoshiyuki HAYASHI ,  Masaaki SHIBATA

IPC: H02P9/04

CPC classification number: F03D7/0224 ,  F03D7/0296 ,  F03D7/043 ,  F03D9/25 ,  F05B2260/71 ,  F05B2260/74 ,  F05B2260/821 ,  F05B2260/96 ,  F05B2270/1021 ,  F05B2270/309 ,  F05B2270/334 ,  F05B2270/404 ,  F05B2270/807 ,  Y02B10/30 ,  Y02E10/723

Abstract: A wind turbine generator, an active damping method thereof, and a windmill tower in which vibrations of the wind turbine generator itself or the windmill tower can be reduced at low cost are provided. The acceleration due to vibrations of a nacelle is detected with an accelerometer attached to the nacelle. In an active damping unit, a pitch angle of windmill blades for generating a thrust on the windmill blades so as to cancel out the vibrations of the nacelle is calculated on the basis of the acceleration, and the pitch angle is output as a blade-pitch-angle command δθ* for damping. On the other hand, in a pitch-angle control unit, a pitch angle of the windmill blades for controlling the output to be a predetermined value is calculated, and the pitch angle is output as a blade-pitch-angle command θ* for output control. The blade-pitch-angle command δθ* for damping is combined with the blade-pitch-angle command θ* for output control using a subtracter. The pitch angle of the windmill blades is controlled on the basis of the resulting blade-pitch-angle command after combining.

公开(公告)号：US08053917B2

公开(公告)日：2011-11-08

申请号：US13035141

申请日：2011-02-25

Applicant: Tsuyoshi Wakasa ,  Akira Yasugi ,  Takatoshi Matsushita ,  Takehiro Naka ,  Takumi Nakashima

Inventor： Tsuyoshi Wakasa ,  Akira Yasugi ,  Takatoshi Matsushita ,  Takehiro Naka ,  Takumi Nakashima

IPC: F03D9/00 ,  H02P9/04 ,  H02M5/45 ,  H02M5/458

CPC classification number: H02P9/48 ,  F03D7/0272 ,  F03D7/028 ,  F03D7/042 ,  F05B2270/1016 ,  H02J3/1892 ,  H02J3/382 ,  H02J3/386 ,  H02P9/04 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763

Abstract: Reactive power is supplied in accordance with a reactive-power supply instruction from a power grid while ensuring a variable-speed range of a wound-rotor induction generator. A variable-speed power generator includes a prime mover that generates motive power by using natural energy; an electric generator that includes a stator having a primary winding and a rotor having a secondary winding, the stator and the rotor being connected to a power grid, and that generates electric power based on the motive power generated by the prime mover; and a power converter connected to the stator and the rotor, wherein the power converter does not supply reactive power to the power grid, and wherein the variable-speed power generator includes a power-converter controller that causes the electric generator to operate at a rotation speed set to be higher than or equal to a synchronous speed and increases reactive power supplied to the power grid when a reactive-power supply instruction for supplying reactive power to the power grid is obtained from the power grid.

Abstract translation: 在确保绕线转子感应发电机的可变速度范围的同时，根据来自电力网的无功电力供给指示来提供无功功率。 变速发电机包括通过使用自然能产生动力的原动机; 发电机，其包括具有初级绕组的定子和具有次级绕组的转子，所述定子和所述转子连接到电网，并且基于由所述原动机产生的动力产生电力; 以及连接到所述定子和所述转子的功率转换器，其中所述功率转换器不向所述电网提供无功功率，并且其中所述变速功率发生器包括功率转换器控制器，所述功率转换器控制器使所述发电机在旋转 速度设定为高于或等于同步速度，并且当从电网获得用于向电网提供无功功率的无功电力指令时，增加供给电网的无功功率。

公开(公告)号：US20080206051A1

公开(公告)日：2008-08-28

申请号：US10590328

申请日：2004-11-12

Applicant: Tsuyoshi Wakasa ,  Kazunari Ide ,  Yoshiyuki Hayashi ,  Masaaki Shibata

Inventor： Tsuyoshi Wakasa ,  Kazunari Ide ,  Yoshiyuki Hayashi ,  Masaaki Shibata

IPC: F03D7/04 ,  F01D7/02 ,  G05D15/00

CPC classification number: F03D7/0224 ,  F03D7/0296 ,  F03D7/043 ,  F03D9/25 ,  F05B2260/71 ,  F05B2260/74 ,  F05B2260/821 ,  F05B2260/96 ,  F05B2270/1021 ,  F05B2270/309 ,  F05B2270/334 ,  F05B2270/404 ,  F05B2270/807 ,  Y02B10/30 ,  Y02E10/723

Abstract: A wind turbine generator, an active damping method thereof, and a windmill tower in which vibrations of the wind turbine generator itself or the windmill tower can be reduced at low cost are provided. The acceleration due to vibrations of a nacelle (13) is detected with an accelerometer (17) attached to the nacelle (13). In an active damping unit (20), a pitch angle of windmill blades (12) for generating a thrust on the windmill blades (12) so as to cancel out the vibrations of the nacelle (13) is calculated on the basis of the acceleration, and the pitch angle is output as a blade-pitch-angle command δθ* for damping. On the other hand, in a pitch-angle control unit (30), a pitch angle of the windmill blades (12) for controlling the output to be a predetermined value is calculated, and the pitch angle is output as a blade-pitch-angle command θ* for output control. The blade-pitch-angle command δθ* for damping is combined with the blade-pitch-angle command θ* for output control using a subtracter (40). The pitch angle of the windmill blades is controlled on the basis of the resulting blade-pitch-angle command after combining.

Abstract translation: 提供了一种风力发电机，其主动阻尼方法和风车塔，其中可以以低成本降低风力涡轮发电机本身或风车塔的振动。 由于机舱（13）的振动引起的加速度是用安装在机舱（13）上的加速度计（17）来检测的。 在主动阻尼单元（20）中，基于加速度来计算用于在风车叶片（12）上产生推力以抵消机舱（13）的振动的风车叶片（12）的俯仰角， 并且作为用于阻尼的叶片间距角指令deltatheta输出俯仰角。 另一方面，在俯仰角控制单元（30）中，计算用于将输出控制为规定值的风车叶片（12）的俯仰角，作为叶片间距输出， 角度指令θ*用于输出控制。 使用减法器（40）将用于阻尼的叶片 - 俯仰角度指令deltatheta *与用于输出控制的叶片 - 俯仰角度指令θ*组合。 在组合之后，基于所得到的叶片间距角命令来控制风车叶片的俯仰角。