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    • 18. 发明申请
    • METHOD OF ANALYZING AND CONTROLLING A COMBUSTION PROCESS IN A GAS TURBINE AND APPARATUS FOR PERFORMING THE METHOD
    • 分析和控制燃气涡轮机燃烧过程的方法和实施方法的装置
    • US20120136483A1
    • 2012-05-31
    • US13300110
    • 2011-11-18
    • Ken Yves HAFFNER
    • Ken Yves HAFFNER
    • G05B21/02G06N3/02G06N7/02
    • G01J5/0014G01J3/42G01J5/0821G01J2003/2833G01J2003/2873G01J2003/423G01N21/274G01N21/3504G01N21/39
    • A method is provided for the measurement of parameters of a gas present in a gas turbine combustion chamber. The method includes tuning a laser to a range containing the absorption lines of species to be analyzed in the gas, and directing the laser light through the combustion chamber and detecting laser light reflected off boundary walls of the combustion chamber. In order to analyze the absorption spectrum measured at high temperatures and pressures, a signature recognition algorithm is applied to the spectrum. The measured absorption spectrum is cross-correlated with a calibration absorption model spectrum for the absorption lines at several temperatures, pressures, and concentrations generated prior to the measurement. Values for pressure, temperature, and concentrations of selected species in the gas are determined simultaneously allowing direct control of the combustion chamber process. An apparatus for carrying out the method is also provided.
    • 提供了一种用于测量燃气轮机燃烧室中存在的气体的参数的方法。 该方法包括将激光调谐到包含待分析物质的吸收线的范围内,并将激光引导通过燃烧室并检测从燃烧室的边界壁反射的激光。 为了分析在高温和高压下测得的吸收光谱,应用了一个签名识别算法。 测量的吸收光谱与在测量之前产生的几个温度,压力和浓度下的吸收谱线的校准吸收模型光谱互相关。 同时确定气体中选定物种的压力,温度和浓度值,直接控制燃烧室过程。 还提供了一种用于执行该方法的装置。
    • 20. 发明授权
    • Audible noise reduction for single current shunt platform
    • 单电流分流平台的声音降噪
    • US07800333B2
    • 2010-09-21
    • US12051484
    • 2008-03-19
    • Eddy Ying Yin Ho
    • Eddy Ying Yin Ho
    • G05B21/02
    • H02P29/50H02M2001/0009
    • A method for reducing audible motor noise in a motor drive, wherein the motor drive includes a motor controller driving a PWM space vector modulator providing gating pulses to an inverter providing phase currents to the phase windings of the motor, and wherein phase currents of the motor are determined by taking samples of the DC link current in a DC link powering the inverter. The method comprises determining the speed of the motor and comparing the speed to a preset threshold, the preset threshold defining a speed at which audible noise is generated by the motor due to a minimum pulse constraint being imposed on the motor phase currents in order to reliably sample the DC link current to measure the phase current. If the speed is below the threshold, the DC link current in the DC link is sampled using a reduced number of current samples for a PWM cycle of the PWM space vector modulator to reduce audible motor noise.
    • 一种用于减小电动机驱动器中的可听见的电动机噪声的方法,其中所述电动机驱动器包括驱动PWM空间矢量调制器的电动机控制器,PWM空间矢量调制器向向所述电动机的相绕组提供相电流的逆变器提供门控脉冲,并且其中所述电动机 通过在逆变器供电的DC链路中获取DC链路电流的样本来确定。 该方法包括确定电动机的速度并将速度与预设阈值进行比较,该预设阈值定义了由于施加在电动机相电流上的最小脉冲约束而由电动机产生可听见的噪声的速度,以便可靠地 对直流链路电流进行采样以测量相电流。 如果速度低于阈值,则使用PWM空间矢量调制器的PWM周期的减少数量的当前采样来对DC链路中的DC链路电流进行采样,以减少可听见的电机噪声。