On-line measurement of an induction machine's rotor time constant by small signal d-axis current injection
    2.
    发明授权
    On-line measurement of an induction machine's rotor time constant by small signal d-axis current injection 有权
    通过小信号d轴电流注入在线测量感应电机的转子时间常数

    公开(公告)号:US08115441B2

    公开(公告)日:2012-02-14

    申请号:US11880070

    申请日:2007-07-19

    IPC分类号: H02P23/14 G05B13/00

    CPC分类号: H02P21/16 G01R31/343

    摘要: A controller continually updates rotor time constant estimation of an induction machine by interrogating the induction machine with a small signal oscillation and monitoring the response. The small signal oscillation is injected onto the d-axis current command signal, and is generated at a frequency that represents the most recent estimate of the rotor time constant (i.e., rotor time constant equal the inverse of the frequency). The controller monitors rotor flux generated in response to the small signal oscillation, and updates the most recent estimate of the rotor time constant based on the monitored rotor flux. This process is repeated continuously to allow for the continuous updating of the rotor time constant.

    摘要翻译: 控制器通过以小信号振荡询问感应电机并监视响应,持续更新感应电机的转子时间常数估计。 小信号振荡被注入到d轴电流指令信号上,并且以表示转子时间常数最近估计的频率(即转子时间常数等于频率的倒数)产生。 控制器监视响应于小信号振荡产生的转子磁通,并且基于所监视的转子磁通更新转子时间常数的最新估计。 连续重复该过程以允许连续更新转子时间常数。

    Power turbine speed control using electrical load following
    3.
    发明授权
    Power turbine speed control using electrical load following 有权
    动力涡轮机速度控制采用电气负载跟随

    公开(公告)号:US07884491B2

    公开(公告)日:2011-02-08

    申请号:US12830404

    申请日:2010-07-05

    IPC分类号: H02P9/04 F02C6/00

    摘要: A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comprises a power turbine controller that senses the rotary speed of the power turbine spool and generates at least one signal that changes the torque of the electrical generator in response to the sensed change in the rotary speed of the power turbine spool.

    摘要翻译: 一种用于涡轮轴式燃气涡轮发动机的动力涡轮机速度控制系统,其具有气体发生器压缩机线轴和动力涡轮机线轴,并驱动通过至少一个电气总线对至少一个电力负载供电的发电机,包括: 动力涡轮机控制器,其感测动力涡轮阀芯的旋转速度并产生响应于感测到的动力涡轮阀芯的转速的变化而改变发电机的扭矩的至少一个信号。

    Power turbine speed control using electrical load following
    4.
    发明授权
    Power turbine speed control using electrical load following 有权
    动力涡轮机速度控制采用电气负载跟随

    公开(公告)号:US07777358B2

    公开(公告)日:2010-08-17

    申请号:US12568439

    申请日:2009-09-28

    IPC分类号: H02P9/04 F02C3/22

    摘要: A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comprises a power turbine controller that senses the rotary speed of the power turbine spool and generates at least one signal that changes the torque of the electrical generator in response to the sensed change in the rotary speed of the power turbine spool.

    摘要翻译: 一种用于涡轮轴式燃气涡轮发动机的动力涡轮机速度控制系统,其具有气体发生器压缩机线轴和动力涡轮机线轴,并驱动通过至少一个电气总线对至少一个电力负载供电的发电机,包括: 动力涡轮机控制器,其感测动力涡轮阀芯的旋转速度并产生响应于感测到的动力涡轮阀芯的转速的变化而改变发电机的扭矩的至少一个信号。

    HARMONIC NOISE REDUCTION
    5.
    发明申请
    HARMONIC NOISE REDUCTION 审中-公开
    和谐噪音减少

    公开(公告)号:US20120274251A1

    公开(公告)日:2012-11-01

    申请号:US13097234

    申请日:2011-04-29

    IPC分类号: H02P6/00

    CPC分类号: H02P25/024 H02P29/50

    摘要: The present invention relates to a method for regulating a set of first noise harmonics from an electronic device operatively connected to a power supply unit, the method comprising the step of injecting a second set of harmonics into a representation of a drive current provided to the electronic device in order to regulate at least part of the noise harmonics of the first set, wherein the harmonics of the second set is/are different from the noise harmonics of the first set. The invention further relates to a power supply unit for performing the method of the present invention.

    摘要翻译: 本发明涉及一种用于从可操作地连接到电源单元的电子设备调节一组第一噪声谐波的方法,该方法包括以下步骤:将第二组谐波注入提供给电子装置的驱动电流的表示 装置,以便调节第一组的噪声谐波的至少一部分,其中第二组的谐波与第一组的噪声谐波不同。 本发明还涉及一种用于执行本发明的方法的电源单元。

    Power turbine speed control using electrical load following
    6.
    发明申请
    Power turbine speed control using electrical load following 有权
    动力涡轮机速度控制采用电气负载跟随

    公开(公告)号:US20080148726A1

    公开(公告)日:2008-06-26

    申请号:US11642401

    申请日:2006-12-20

    IPC分类号: F15B7/02

    摘要: A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comprises a power turbine controller that senses the rotary speed of the power turbine spool and generates at least one signal that changes the torque of the electrical generator in response to the sensed change in the rotary speed of the power turbine spool.

    摘要翻译: 一种用于涡轮轴式燃气涡轮发动机的动力涡轮机速度控制系统,其具有气体发生器压缩机线轴和动力涡轮机线轴,并驱动通过至少一个电气总线对至少一个电力负载供电的发电机,包括: 动力涡轮机控制器,其感测动力涡轮阀芯的旋转速度并产生响应于感测到的动力涡轮阀芯的转速的变化而改变发电机的扭矩的至少一个信号。

    Power Turbine Speed Control Using Electrical Load Following
    8.
    发明申请
    Power Turbine Speed Control Using Electrical Load Following 有权
    使用电气负载的功率涡轮速度控制

    公开(公告)号:US20100013243A1

    公开(公告)日:2010-01-21

    申请号:US12568439

    申请日:2009-09-28

    IPC分类号: F02D29/06

    摘要: A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comprises a power turbine controller that senses the rotary speed of the power turbine spool and generates at least one signal that changes the torque of the electrical generator in response to the sensed change in the rotary speed of the power turbine spool.

    摘要翻译: 一种用于涡轮轴式燃气涡轮发动机的动力涡轮机速度控制系统,其具有气体发生器压缩机线轴和动力涡轮机线轴,并驱动通过至少一个电气总线对至少一个电力负载供电的发电机,包括: 动力涡轮机控制器,其感测动力涡轮阀芯的旋转速度并产生响应于感测到的动力涡轮阀芯的转速的变化而改变发电机的扭矩的至少一个信号。

    Signal control for motor position determination
    9.
    发明授权
    Signal control for motor position determination 有权
    电机位置确定信号控制

    公开(公告)号:US07466088B2

    公开(公告)日:2008-12-16

    申请号:US11305684

    申请日:2005-12-16

    IPC分类号: H02P1/18

    CPC分类号: H02P6/18

    摘要: A controller estimates a motor position. The controller includes a driver and an injector. The driver generates a fundamental control signal. The injector generates a position carrier voltage that superimposed on the fundamental control signal. The injector alters the magnitude of the carrier voltage signal in response to the corresponding amplitude of the fundamental control signal. In a disclosed example, the injector increases the carrier voltage signal magnitude as the fundamental control current signal approaches a zero crossing. The injector then gradually decreases the carrier voltage signal magnitude as the fundamental control current signal magnitude increases from zero.

    摘要翻译: 控制器估计电机位置。 控制器包括驱动器和喷射器。 驱动器产生基本控制信号。 喷射器产生叠加在基本控制信号上的位置载体电压。 喷射器响应于基本控制信号的对应振幅来改变载波电压信号的幅度。 在公开的示例中,当基本控制电流信号接近零交叉时,喷射器增加载波电压信号幅度。 随着基本控制电流信号幅度从零增加,喷射器逐渐减小载波电压信号幅度。

    Voltage control and harmonic minimization of multi-level converter
    10.
    发明授权
    Voltage control and harmonic minimization of multi-level converter 有权
    多电平转换器的电压控制和谐波最小化

    公开(公告)号:US07433216B2

    公开(公告)日:2008-10-07

    申请号:US11273507

    申请日:2005-11-14

    IPC分类号: H02M7/5387

    CPC分类号: H02M1/12 H02M7/487

    摘要: A controller applies a pattern of pulses to switching elements within a multi-level controller to effectuate control of the fundamental voltage magnitude and phase associated with the converter, as well as providing harmonic minimization of the 5th and 7th level harmonics. The controller combines a first pattern of pulses with a second pattern of pulses phase shifted by an amount based on the desired fundamental voltage magnitude to create a third pattern of pulses. The controller applies a phase shift to the third pattern of pulses based on the desired fundamental voltage phase. The controller supplies switching control waveforms to active components within the multi-level controller based on the phase shifted third pattern of pulses such that the desired fundamental voltage magnitude and phase is generated and selected harmonics are minimized.

    摘要翻译: 控制器向多电平控制器中的开关元件施加脉冲模式以实现与转换器相关联的基波电压幅度和相位的控制,以及提供第5和第7和第7的谐波最小化 电平谐波。 控制器将第一脉冲模式与基于期望的基本电压幅度的量相移的第二脉冲模式组合以产生第三脉冲模式。 控制器基于所需的基波电压相位对第三脉冲模式进行相移。 控制器基于相移的第三脉冲模式将开关控制波形提供给多电平控制器内的有源部件,使得产生期望的基波电压幅度和相位并使选择的谐波最小化。