Procedure and control unit to diagnose a secondary air system
    3.
    发明申请
    Procedure and control unit to diagnose a secondary air system 有权
    诊断二次空气系统的程序和控制单元

    公开(公告)号:US20080016954A1

    公开(公告)日:2008-01-24

    申请号:US11800259

    申请日:2007-05-04

    IPC分类号: G01M15/04 G01L7/00

    摘要: A procedure is introduced to test the functional capability of a secondary air system of an internal combustion engine, wherein values of a pressure are acquired, which arises in the secondary air system between the secondary air pump and a secondary air flow cross section, which can be controlled, when the secondary air pump is activated and the actuation of the secondary air flow cross section is increased; in that a measurement for the pressure is developed from the acquired values and is compared with a set point value, and the functional capability of the secondary air system is assessed as a function of a result of the comparison. The procedure characterizes itself in such a way, that in a secondary air system, whose secondary air flow cross section is controlled by two secondary air valves, wherein one of the two secondary air valves is actuated to close, while the other one of the two secondary air valves is actuated to open, and the assessment of the functional capability for a section of the secondary air system occurs in the section, in which the secondary air valve actuated to open is disposed. In addition a control unit is introduced, which controls the sequence of such a procedure.

    摘要翻译: 引入了一种程序来测试内燃机的二次空气系统的功能能力,其中获得了在二次空气泵和二次空气流横截面之间的二次空气系统中产生的压力值,其可以 当二次空气泵被激活并且二次空气流动横截面的致动增加时被控制; 因为从所获取的值中产生压力的测量值并与设定值进行比较,并且根据比较结果来评估二次空气系统的功能能力。 该程序以这样的方式表征:在二次空气系统中,其二次空气流横截面由两个二次空气阀控制,其中两个二次空气阀中的一个被致动以关闭,而另一个 辅助空气阀被致动以打开,并且对于二次空气系统的一部分的功能能力的评估发生在其中设置致动打开的二次空气阀的部分中。 另外还引入了一个控制单元,用于控制这种程序的顺序。

    Controller of adjustable DC voltage for a transformerless reactive series compensator
    4.
    发明授权
    Controller of adjustable DC voltage for a transformerless reactive series compensator 失效
    无变压器无功串联补偿器的可调直流电压控制器

    公开(公告)号:US06242895B1

    公开(公告)日:2001-06-05

    申请号:US09671156

    申请日:2000-09-28

    IPC分类号: G05F170

    CPC分类号: G05F1/70 H02J3/1807 Y02E40/30

    摘要: A controller for controlling a reactive series compensator serially inserted at compensator terminals into a power transmission line for controlling the line current. The controller includes a current control loop and a voltage control loop. A current controller outputs a control voltage (ccout) indicating a desired compensator terminal output voltage (uc). A control method selector means generates, in a low output voltage region, a constant reference voltage (uDCref) for the voltage control loop and a variable modulation index mq of a modulation signal m=md cos (&ohgr;t) −mq sin (&ohgr;t). In a high output voltage range, the control method selector outputs a constant modulation index mq and a variable reference voltage (uDCref). The voltage controller outputs the modulation index md of the modulation signal m. Furthermore, the control method selector can include a rate limiter for limiting the change rate of the reference voltage (uDCref). In connection with the control method selection and/or the rate limiter, a decoupling control for making the voltage and current control loops independent from each other can be used. The controllers find particular application in transformerless reactive series compensators for single-phase or three-phase control.

    摘要翻译: 控制器,用于将串联补偿器端子的电抗串联补偿器控制在用于控制线路电流的输电线路中。 控制器包括电流控制回路和电压控制回路。 电流控制器输出指示期望的补偿器端子输出电压(uc)的控制电压(ccout)。 控制方法选择装置在低输出电压区域产生用于电压控制环路的恒定参考电压(uDCref)和调制信号m = md cos(ωgat)-mq sin(ωgat)的可变调制指数mq。 在高输出电压范围内,控制方式选择器输出恒定的调制指数mq和可变参考电压(uDCref)。 电压控制器输出调制信号m的调制指数md。 此外,控制方法选择器可以包括用于限制参考电压(uDCref)的变化率的速率限制器。 关于控制方法选择和/或速率限制器,可以使用用于使电压和电流控制回路彼此独立的去耦控制。 控制器特别适用于单相或三相控制的无变压器无功补偿器。

    Controller for performing a decoupling control of a transformerless reactive series compensator
    5.
    发明授权
    Controller for performing a decoupling control of a transformerless reactive series compensator 失效
    用于执行无变压器无功串联补偿器的去耦控制的控制器

    公开(公告)号:US06225791B1

    公开(公告)日:2001-05-01

    申请号:US09585551

    申请日:2000-06-02

    IPC分类号: G05F170

    CPC分类号: H02J3/1814 Y02E40/18

    摘要: A controller for generating a modulation signal m applied to a transformerless reactive series compensator connected serially in a power transmission line. A modulation signal generator generates a modulation signal m in the form of m=md cos (&ohgr;t)−mq sin (wt). The controller includes a current control loop with a current controller outputting the modulation index mq of the modulation signal m. A voltage control loop including a DC voltage controller outputs the modulation index md, of the modulation signal m. The current control loop and the voltage control loop are respectively provided for outputting indices mq′, md′ in order to control a line current and a DC capacitor voltage of a capacitor of the compensator to reference values. The controller includes a decoupler so that the line controller and the capacitor voltage are independent of the output of the current controller. Therefore, the amplitude of the line current and the magnitude of the DC capacitor voltage can be controlled completely independently from each other, i.e., the control loops are decoupled.

    摘要翻译: 一种用于产生调制信号m的控制器,该调制信号m施加到串联地连接在输电线路中的无变压器无功串联补偿器。 调制信号发生器产生m = md cos(ωgat)-mqsin(wt)形式的调制信号m。 控制器包括具有输出调制信号m的调制指数mq的电流控制器的电流控制回路。 包括DC电压控制器的电压控制回路输出调制信号m的调制指数md。 分别提供电流控制回路和电压控制回路以输出指令mq',md',以便将补偿器的电容器的线电流和直流电容器电压控制为参考值。 控制器包括一个去耦器,使得线路控制器和电容器电压与电流控制器的输出无关。 因此,可以完全独立地控制线电流的幅度和直流电容器电压的大小,即控制回路被解耦。

    Procedure and control unit to diagnose a secondary air system
    8.
    发明授权
    Procedure and control unit to diagnose a secondary air system 有权
    诊断二次空气系统的程序和控制单元

    公开(公告)号:US07562565B2

    公开(公告)日:2009-07-21

    申请号:US11800259

    申请日:2007-05-04

    IPC分类号: G01M15/04

    摘要: A procedure is introduced to test the functional capability of a secondary air system of an internal combustion engine, wherein values of a pressure are acquired, which arises in the secondary air system between the secondary air pump and a secondary air flow cross section, which can be controlled, when the secondary air pump is activated and the actuation of the secondary air flow cross section is increased; in that a measurement for the pressure is developed from the acquired values and is compared with a set point value, and the functional capability of the secondary air system is assessed as a function of a result of the comparison. The procedure characterizes itself in such a way, that in a secondary air system, whose secondary air flow cross section is controlled by two secondary air valves, wherein one of the two secondary air valves is actuated to close, while the other one of the two secondary air valves is actuated to open, and the assessment of the functional capability for a section of the secondary air system occurs in the section, in which the secondary air valve actuated to open is disposed. In addition a control unit is introduced, which controls the sequence of such a procedure.

    摘要翻译: 引入了一种程序来测试内燃机的二次空气系统的功能能力,其中获得了在二次空气泵和二次空气流横截面之间的二次空气系统中产生的压力值,其可以 当二次空气泵被激活并且二次空气流动横截面的致动增加时被控制; 因为从所获取的值中产生压力的测量值并与设定值进行比较,并且根据比较结果来评估二次空气系统的功能能力。 该程序以这样的方式表征:在二次空气系统中,其二次空气流横截面由两个二次空气阀控制,其中两个二次空气阀中的一个被致动以关闭,而另一个 辅助空气阀被致动以打开,并且对于二次空气系统的一部分的功能能力的评估发生在其中设置致动打开的二次空气阀的部分中。 另外还引入了一个控制单元,用于控制这种程序的顺序。