Asynchronous conversion method and apparatus for use with variable speed
turbine hydroelectric generation
    1.
    发明授权
    Asynchronous conversion method and apparatus for use with variable speed turbine hydroelectric generation 失效
    用于变速涡轮机水力发电的异步转换方法和装置

    公开(公告)号:US5742515A

    公开(公告)日:1998-04-21

    申请号:US550940

    申请日:1995-10-31

    摘要: A hydroelectric power generation system (20) generates electrical power for an electrical utilization system (72). A controller (42) obtains a requested output electrical power level from a hydro-turbine unit (70) by using a signal indicative of water head (h.sub.meas) to control speed of an asynchronous rotary converter (50) coupled to the hydro-turbine unit and to control gate position of the hydro-turbine unit. The requested output electrical power level is applied from the hydro-turbine unit via the rotary converter to the electrical utilization system. In one embodiment, the controller (42B) accesses an updatable memory wherein Hydraulic Hill Chart information is stored. In another embodiment, the controller (42C) also includes a real-time automatic governor which uses a signal indicative of ac transmission frequency to the electrical utilization system to control the output electrical power level of the rotary converter.

    摘要翻译: 水力发电系统(20)产生电力利用系统(72)的电力。 控制器(42)通过使用表示水头(hmeas)的信号来控制与水轮机单元(70)的耦合的异步旋转转换器(50)的速度从水力涡轮机单元(70)获得请求的输出电功率水平 并控制水轮机单元的门位置。 所要求的输出功率水平从水轮机组通过旋转转换器施加到电气利用系统。 在一个实施例中,控制器(42B)访问存储液压山图信息的可更新存储器。 在另一个实施例中,控制器(42C)还包括实时自动调速器,其使用指示交流传输频率的信号到电力利用系统来控制旋转转换器的输出电功率水平。

    Interconnection system for transmitting power between electrical systems
    2.
    发明授权
    Interconnection system for transmitting power between electrical systems 有权
    用于在电气系统之间传输电力的互连系统

    公开(公告)号:US06356472B1

    公开(公告)日:2002-03-12

    申请号:US09679437

    申请日:2000-10-03

    IPC分类号: H02M506

    摘要: An electrical interconnection system (100) comprises a variable frequency rotary transformer (201) and a control system (104). The control system (104) adjusts an angular position of the rotary transformer (102) so that measured power (P1) transferred from a first electrical system (22) to a second electrical system (24) matches an inputted order power signal (P0). The controller limits the power requested by the power order signal based on measured voltages, e.g., the controller has a power-limit function which overrides the order power signal when a measured power exceeds a limit computed from the measured voltages. The limit function is a fraction of maximum theoretical power.

    摘要翻译: 电互连系统(100)包括变频旋转变压器(201)和控制系统(104)。 控制系统(104)调节旋转变压器(102)的角度位置,使得从第一电气系统(22)传递到第二电气系统(24)的测量功率(P1)与输入的定时功率信号(P0)匹配, 。 控制器基于测量的电压来限制由功率指令信号所请求的功率,例如,当测量功率超过从测量的电压计算的极限时,控制器具有超过次级功率信号的功率限制功能。 极限函数是最大理论功率的一小部分。

    Interconnection system for transmitting power between electrical systems
    3.
    发明授权
    Interconnection system for transmitting power between electrical systems 失效
    用于在电气系统之间传输电力的互连系统

    公开(公告)号:US06741485B1

    公开(公告)日:2004-05-25

    申请号:US08828502

    申请日:1997-03-31

    IPC分类号: H02M506

    摘要: An electrical interconnection system (100) comprises a variable frequency rotary transformer (102) and a control system (104). The control system (104) adjusts an angular position of the rotary transformer (102) so that measured power (P1) transferred from a first electrical system (22) to a second electrical system (24) matches an inputted order power (P0). The rotary transformer (102) comprises a rotor assembly (110) and a stator (112), with the control system (104) adjusting a time integral of rotor speed over time. The control system (104) includes a first control unit (107) and a second control unit (108). The first control unit (107) compares the input order power P0 to the measured power P1 to generate a requested angular velocity signal &ohgr;0. The second control unit (108) compares the requested angular velocity signal &ohgr;0 to a measured angular velocity signal &ohgr;r of the rotary transformer to generate a converter drive signal T0 to a torque control unit (106), thereby controlling the angular positioning (&thgr;r) of the rotor assembly (110) relative to the stator (112). In various embodiments, the torque control unit (106) is integrated in the rotor assembly (110) and stator (112) of the rotary transformer (102).

    摘要翻译: 电互连系统(100)包括变频旋转变压器(102)和控制系统(104)。 控制系统(104)调整旋转变压器(102)的角度位置,使得从第一电气系统(22)传递到第二电气系统(24)的测量功率(P1)与输入的订单功率(P0)匹配。 旋转变压器(102)包括转子组件(110)和定子(112),控制系统(104)随时间调整转子速度的时间积分。 控制系统(104)包括第一控制单元(107)和第二控制单元(108)。 第一控制单元(107)将输入的次序功率P0与测量的功率P1进行比较,以生成请求的角速度信号ω0。 第二控制单元(108)将请求的角速度信号ω00与旋转变压器的测量角速度信号ω进行比较,以向转矩控制单元(106)生成转换器驱动信号T0,由此控制角速度信号ω 所述转子组件(110)相对于所述定子(112)。 在各种实施例中,转矩控制单元(106)集成在旋转变压器(102)的转子组件(110)和定子(112)中。