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    • 3. 发明授权
    • LÜFTERANDORDNUNG
    • EP2220375B1
    • 2013-12-18
    • EP08851426.0
    • 2008-11-17
    • Ebm-Papst St. Georgen GmbH & CO. KG
    • GUTMANN, MarkusKARWATH, ArnoDUFNER, Thomas
    • F04D27/02F04D27/00
    • F04D27/004F04D27/0284F05D2270/335
    • A fan arrangement (20) has a fan (24) driven by an electric motor (22), also an apparatus for detecting the electrical power (PIST) consumed by the electric motor (22) during operation; an input apparatus (28) for inputting a desired rotation speed (nSOLL) of said electric motor (22); a converter (26) for converting said desired rotation speed (nSOLL) into a desired electrical power (PSOLL); and a controller (44), which regulates the control input controlling the electric motor (22) in such a way that the difference between the electrical power (PIST) consumed in operation and the desired electrical power (PSOLL) is reduced, in order thereby to improve the air output characteristic curve (49, 58) of the fan arrangement (20) at least in a portion of the overall operating range.
    • 风扇装置(20)具有由电动机(22)驱动的风扇(24)以及用于检测在电动机(22)在运行期间消耗的电力(PIST)的装置; 输入装置(28),用于输入所述电动机(22)的期望转速(nSOLL); 转换器(26),用于将所述期望转速(nSOLL)转换为期望电功率(PSOLL);转换器 和控制器(44),其以这样的方式调节控制电动机(22)的控制输入,使得在操作中消耗的电功率(PIST)和期望电功率(PSOLL)之间的差减小 以至少在整个操作范围的一部分中改进风扇装置(20)的空气输出特性曲线(49,58)。
    • 9. 发明公开
    • Method and apparatus for preventing surge in a dynamic compressor
    • EP0500196A3
    • 1992-10-21
    • EP92201363.6
    • 1989-03-15
    • COMPRESSOR CONTROLS CORPORATION
    • Staroselsky, NaumReinke, Paul A.Mirsky, Saul
    • F04D27/02
    • F04D27/0284F04D27/001F04D27/0223
    • A method of anti-surge protection for a dynamic compressor (101) having a corresponding compressor performance map and inlet and discharge networks (103,105), an anti-surge valve (107) connecting said discharge and inlet networks (105,103) and an anti-surge control system (108-135) operating said anti-surge control valve (107) to maintain the relative distance between the compressor operating point and the surge limit below which said compressor (101) would surge, said relative distance being a difference between the relative operating slope of the compressor and the relative slope of the surge limit, both of said relative slopes being ratios of the actual slopes to the slope of the surge limit line, both actual slopes being tangents of the angles between the operating point and the horizontal axis of the compressor performance map and the surge limit and the horizontal axis of the compressor performance map, said method comprising :
         continuously calculating said relative distance between the compressor operating point and the surge limit as a function of one or more measured process variables and adjusting the position of said anti-surge valve by a closed loop response of the control system to prevent said relative distance between the compressor operating point and the surge limit from decreasing below a minimum margin of safety, said minimum margin of safety including both constant and variable parts, and adding an open-loop response to the output of said anti-surge control system whenever the relative distance between the compressor operating point and the surge limit is below a preset level of danger because when said relative distance between the compressor operating point and the surge limit is located below said preset level of danger, the operating point may cross the surge limit line; and
         maintaining said open-loop response at zero under steadystate conditions, increasing said open-loop response by an amount proportional to the instantaneous rate at which said controlled variable is approaching said surge limit whenever the relative distance between the compressor operating point and the surge limit decreases below the preset level of danger, and at preset time intervals thereafter so long as said relative distance between the compressor operating point and the surge limit continues to be below said preset level of danger, and decreasing said open-loop response slowly toward zero whenever said relative distance between the operating point and the surge limit becomes higher than the preset level of danger.
    • 10. 发明公开
    • Compressor control system to improve turndown and reduce incidents of surging
    • Verdichterregelsystem zur Verbesserung derMindestfördermengeund zur Verminderung des Pumpens。
    • EP0398436A1
    • 1990-11-22
    • EP90201227.7
    • 1990-05-14
    • ELLIOTT TURBOMACHINERY COMPANY, INC.
    • Heckel, Bruce G.
    • F04D27/02
    • F04D27/0284
    • A method and apparatus for regulating the operation of a compressor system including a compressor (2) moving a gas from an intake conduit (4) through a discharge conduit (6) to a gas storage reservoir (8) are disclosed. In accordance with the method, an unload valve (24) in an unload conduit (22) connected to the discharge conduit (6) is initially fully closed and an inlet valve (18) in the intake conduit (4) is initially fully opened. Then the inlet valve (18) is closed by an amount necessary to maintain the discharge pressure at a design pressure level and at a gas flow rate between the design flow level and a minimum flow level. When the gas flow rate drops below the minimum flow level, the inlet valve (18) is maintained in its last position and the unload valve (24) is opened by an amount necessary to maintain the discharge pressure below a first pressure level set higher than the design pressure level. If the unload valve (24) remains open beyond a position set point for longer than a first predetermined period of time, the unload valve (24) is fully opened and the inlet valve (18) is fully closed. Then if the system pressure drops below a second pressure level lower than the design pressure, the control steps discussed above are repeated.
    • 公开了一种用于调节压缩机系统的操作的方法和装置,该压缩机系统包括将气体从进气管道(4)通过排放管道(6)移动到气体储存器(8)的压缩机(2)。 根据该方法,连接到排放管道(6)的卸载导管(22)中的卸载阀(24)最初完全关闭,并且进气管道(4)中的入口阀(18)最初完全打开。 然后,入口阀(18)被关闭以将排放压力维持在设计压力水平和设计流量水平和最小流量水平之间的气体流量所需的量。 当气体流速低于最小流量时,入口阀(18)保持在其最后位置,并且卸载阀(24)打开一定量,以将排出压力维持在高于 设计压力水平。 如果卸载阀(24)保持打开超过位置设定点超过第一预定时间段,则卸载阀(24)完全打开,进气阀(18)完全关闭。 然后,如果系统压力低于低于设计压力的第二压力水平,则重复上述控制步骤。