公开(公告)号：US09897658B2

公开(公告)日：2018-02-20

申请号：US14606068

申请日：2015-01-27

Applicant: General Electric Company

Inventor： Jiucai Zhang ,  Charles Clarence Hicks, Jr. ,  Sam T. Liu ,  Robert A. Kaucic ,  Leng Mao ,  David E. James ,  Herman Lucas Norbert Wiegman ,  Mert Geveci

IPC: H02J7/00 ,  G01R31/36 ,  H01M10/48

CPC classification number: G01R31/362 ,  G01R31/3651 ,  H01M10/48

Abstract: The present disclosure is directed to a system and method for controlling an energy storage device by more accurately detecting an end-of-discharge voltage of the energy storage device. More specifically, in one embodiment, the method includes determining an end-of-discharge voltage threshold for the energy storage device. Another step includes filtering the end-of-discharge voltage threshold via a filter. The method also includes adjusting a time constant of the filter based on at least one voltage-current condition. Still a further step includes comparing the filtered end-of-discharge voltage threshold and a terminal voltage of the energy storage device. Based on the comparison, the method includes determining a change of state of the energy storage device. Thus, the energy storage device can be controlled based on the change of state.

公开(公告)号：US20170058715A1

公开(公告)日：2017-03-02

申请号：US14839612

申请日：2015-08-28

Applicant: General Electric Company

Inventor： Mert Geveci ,  John Lawrence Meyer

IPC: F01K23/10 ,  G01L1/00

CPC classification number: F01K23/10 ,  F01D19/02 ,  F01K7/165 ,  F01K13/02 ,  F01K23/101 ,  F02C6/18 ,  F05D2220/31 ,  F05D2220/32 ,  F05D2220/76 ,  F05D2240/24 ,  F05D2260/81 ,  F05D2260/941 ,  F05D2270/20 ,  F05D2270/303 ,  F05D2270/80 ,  G01L1/00 ,  Y02E20/16

Abstract: A control system for a power plant includes a sensor that measures a rotor surface temperature of a steam turbine rotor, where the temperature is a function of exhaust gasses from a heat source for heating steam to a target temperature. The control system includes a controller coupled to the sensor and configured to compute the target temperature using an inverse process model for steam turbine rotor stress dynamics, and based on a reference steam turbine rotor stress and a feedback steam turbine rotor stress, compute a measured steam turbine rotor stress based on a measured surface temperature of the steam turbine rotor, compute an estimated steam turbine rotor stress using a process model for the steam turbine rotor stress dynamics, and based on the target temperature, and compute the feedback steam turbine rotor stress based on the measured steam turbine rotor stress and the estimated steam turbine rotor stress.

Abstract translation: 用于发电厂的控制系统包括测量蒸汽轮机转子的转子表面温度的传感器，其中温度是来自用于将蒸汽加热到目标温度的热源的废气的函数。 控制系统包括耦合到传感器并被配置为使用蒸汽轮机转子应力动力学的逆过程模型并且基于参考蒸汽涡轮机转子应力和反馈蒸汽涡轮机转子应力来计算目标温度的控制器，计算测量的蒸汽 基于汽轮机转子的测量表面温度的涡轮转子应力，使用蒸汽轮机转子应力动力学的过程模型，并基于目标温度计算估计的汽轮机转子应力，并计算反馈汽轮机转子应力 对蒸汽轮机转子应力的测量和估计的汽轮机转子应力。

公开(公告)号：US10100679B2

公开(公告)日：2018-10-16

申请号：US14839612

申请日：2015-08-28

Applicant: General Electric Company

Inventor： Mert Geveci ,  John Lawrence Meyer

IPC: G01L5/00 ,  F01K23/10 ,  G01L1/00 ,  F01D19/02 ,  F01K7/16 ,  F01K13/02

Abstract: A control system for a power plant includes a sensor that measures a rotor surface temperature of a steam turbine rotor, where the temperature is a function of exhaust gasses from a heat source for heating steam to a target temperature. The control system includes a controller coupled to the sensor and configured to compute the target temperature using an inverse process model for steam turbine rotor stress dynamics, and based on a reference steam turbine rotor stress and a feedback steam turbine rotor stress, compute a measured steam turbine rotor stress based on a measured surface temperature of the steam turbine rotor, compute an estimated steam turbine rotor stress using a process model for the steam turbine rotor stress dynamics, and based on the target temperature, and compute the feedback steam turbine rotor stress based on the measured steam turbine rotor stress and the estimated steam turbine rotor stress.

公开(公告)号：US09683462B2

公开(公告)日：2017-06-20

申请号：US14101709

申请日：2013-12-10

Applicant: General Electric Company

Inventor： Mert Geveci

IPC: F01D17/08 ,  F01K13/02

CPC classification number: F01K13/025 ,  F01D17/085

Abstract: A cooling fluid flow control system for a turbine section of a steam turbine system and a related program product are provided. In one embodiment, a system includes at least one computing device operably connected to a cooling system. The computing device may be configured to control a flow rate of cooling fluid supplied to a steam turbine system by the cooling system by performing actions including modeling a sensitivity of a wheel space temperature to a change in the flow rate in the form of a piecewise linear relationship, the piecewise linear relationship including a flooded flow rate above which the wheel space temperature becomes insensitive to increased flow rate. The computing device also periodically modifies the flow rate of the cooling fluid supplied to the wheel space of the turbine section to approximate a minimum flooded flow rate based on the measured flow rate and the modeling.

公开(公告)号：US09568897B2

公开(公告)日：2017-02-14

申请号：US14146085

申请日：2014-01-02

Applicant: General Electric Company

Inventor： Mert Geveci

IPC: G05B13/04 ,  G05B11/42 ,  G05B13/02

CPC classification number: G05B13/04 ,  G05B11/42 ,  G05B13/021

Abstract: A controller system includes at least one computing device operably connected to a process having a target value for a variable parameter. The computing device(s) is configured to control the variable parameter by performing actions including: computing an error between the target value and an actual value of the variable parameter. Based on the error, the computing device(s) may calculate a desired gain adjustment of the variable parameter, and a desired mean adjustment of the variable parameter. A correction signal may be created for modifying the process by: in response to the error being positive, creating the correction signal by adding the desired mean adjustment and the desired gain adjustment, and in response to the error being negative, creating the correction signal by differencing the desired mean adjustment and the desired gain adjustment. A related program product may carry out similar functions.

Abstract translation: 控制器系统包括可操作地连接到具有用于可变参数的目标值的过程的至少一个计算设备。 计算设备被配置为通过执行动作来控制可变参数，包括：计算目标值与可变参数的实际值之间的误差。 基于该误差，计算设备可以计算可变参数的期望增益调整，以及可变参数的期望均值调整。 可以创建修正信号以通过以下方式来修改过程：响应于正的误差，通过添加所需的平均调整和期望的增益调整来产生校正信号，并且响应于该误差为负，通过以下方式产生校正信号 区分所需的平均调整和所需的增益调整。 相关的程序产品可以执行类似的功能。

公开(公告)号：US10156626B2

公开(公告)日：2018-12-18

申请号：US14829798

申请日：2015-08-19

Applicant: General Electric Company

Inventor： Mert Geveci

IPC: G01R35/00 ,  G01R19/25 ,  G01R31/36

Abstract: Systems and methods to sample current measurements in energy storage assets while reducing bias errors such as aliasing are provided. One example current sampling system includes an integrator circuit that receives the current signal as an input and integrates the current signal to output a charge signal. The current signal is indicative of a current at an energy storage asset of an energy storage system. The current sampling system includes a charge signal sampler circuit that samples the charge signal at a charge signal sampling rate. The current sampling system includes a differentiator circuit that receives the samples of the charge signal from the charge signal sampler circuit and differentiates the samples of the charge signal to output an anti-aliased current signal.

公开(公告)号：US20170052242A1

公开(公告)日：2017-02-23

申请号：US14829798

申请日：2015-08-19

Applicant: General Electric Company

Inventor： Mert Geveci

IPC: G01R35/00

CPC classification number: G01R35/005 ,  G01R19/2509 ,  G01R31/3613

Abstract: Systems and methods to sample current measurements in energy storage assets while reducing bias errors such as aliasing are provided. One example current sampling system includes an integrator circuit that receives the current signal as an input and integrates the current signal to output a charge signal. The current signal is indicative of a current at an energy storage asset of an energy storage system. The current sampling system includes a charge signal sampler circuit that samples the charge signal at a charge signal sampling rate. The current sampling system includes a differentiator circuit that receives the samples of the charge signal from the charge signal sampler circuit and differentiates the samples of the charge signal to output an anti-aliased current signal.

Abstract translation: 提供了在减少偏移误差（如混叠）的情况下对能量存储资产中的当前测量进行采样的系统和方法。 一个示例性电流采样系统包括积分器电路，其接收当前信号作为输入并且对电流信号进行积分以输出充电信号。 当前信号表示能量存储系统的能量存储资产处的电流。 电流采样系统包括以充电信号采样率对充电信号进行采样的充电信号采样器电路。 电流采样系统包括一个微分电路，其接收来自充电信号取样器电路的充电信号的采样，并且对充电信号的采样进行差分以输出抗​​混叠电流信号。

公开(公告)号：US20170002683A1

公开(公告)日：2017-01-05

申请号：US14790301

申请日：2015-07-02

Applicant: General Electric Company

Inventor： Mert Geveci

IPC: F01D21/12 ,  F01D25/14 ,  G05B15/02 ,  F01D25/26

CPC classification number: F01D21/12 ,  F01D19/02 ,  F01D25/14 ,  F01D25/26 ,  F05D2220/31 ,  F05D2260/20 ,  F05D2270/303

Abstract: Various approaches include: obtaining temperature data indicating temperatures of distinct zones in an upper half of a steam turbine shell and a lower half of a steam turbine shell; determining whether a difference between a temperature of a zone in the upper half of the steam turbine shell and a temperature of a neighboring zone in the lower half of the steam turbine shell exceeds a threshold; and initiating a change in a state of a thermal element in at least one of an adjacent zone to at least one of the zone in the upper half of the steam turbine shell or the neighboring zone in the lower half of the steam turbine shell in response to determining the difference exceeds the threshold.

Abstract translation: 各种方法包括：获得指示汽轮机壳体的上半部分和汽轮机壳体的下半部分中不同区域的温度的温度数据; 确定所述汽轮机壳体的上半部分中的区域的温度与所述汽轮机壳体的下半部分中的相邻区域的温度之间的差是否超过阈值; 并且响应于汽轮机壳体的上半部分中的至少一个区域或汽轮机壳体的下半部分中的相邻区域中的至少一个相邻区域中的至少一个中的热元件的状态发生变化 以确定差异超过阈值。

公开(公告)号：US20150185714A1

公开(公告)日：2015-07-02

申请号：US14146085

申请日：2014-01-02

Applicant: General Electric Company

Inventor： Mert Geveci

IPC: G05B13/04

CPC classification number: G05B13/04 ,  G05B11/42 ,  G05B13/021

Abstract: A controller system includes at least one computing device operably connected to a process having a target value for a variable parameter. The computing device(s) is configured to control the variable parameter by performing actions including: computing an error between the target value and an actual value of the variable parameter. Based on the error, the computing device(s) may calculate a desired gain adjustment of the variable parameter, and a desired mean adjustment of the variable parameter. A correction signal may be created for modifying the process by: in response to the error being positive, creating the correction signal by adding the desired mean adjustment and the desired gain adjustment, and in response to the error being negative, creating the correction signal by differencing the desired mean adjustment and the desired gain adjustment. A related program product may carry out similar functions.

Abstract translation: 控制器系统包括可操作地连接到具有用于可变参数的目标值的过程的至少一个计算设备。 计算设备被配置为通过执行动作来控制可变参数，包括：计算目标值与可变参数的实际值之间的误差。 基于该误差，计算设备可以计算可变参数的期望增益调整，以及可变参数的期望均值调整。 可以创建修正信号以通过以下方式来修改过程：响应于正的误差，通过添加所需的平均调整和期望的增益调整来产生校正信号，并且响应于该误差为负，通过以下方式产生校正信号 区分所需的平均调整和所需的增益调整。 相关的程序产品可以执行类似的功能。

公开(公告)号：US20160218400A1

公开(公告)日：2016-07-28

申请号：US14606068

申请日：2015-01-27

Applicant: General Electric Company

Inventor： Jiucai Zhang ,  Charles Clarence Hicks,, JR. ,  Sam T. Liu ,  Robert A. Kaucic ,  Leng Mao ,  David E. James ,  Herman Lucas Norbert Wiegman ,  Mert Geveci

IPC: H01M10/42 ,  H01M10/48

CPC classification number: G01R31/362 ,  G01R31/3651 ,  H01M10/48

Abstract: The present disclosure is directed to a system and method for controlling an energy storage device by more accurately detecting an end-of-discharge voltage of the energy storage device. More specifically, in one embodiment, the method includes determining an end-of-discharge voltage threshold for the energy storage device. Another step includes filtering the end-of-discharge voltage threshold via a filter. The method also includes adjusting a time constant of the filter based on at least one voltage-current condition. Still a further step includes comparing the filtered end-of-discharge voltage threshold and a terminal voltage of the energy storage device. Based on the comparison, the method includes determining a change of state of the energy storage device. Thus, the energy storage device can be controlled based on the change of state.

Abstract translation: 本公开涉及一种用于通过更准确地检测能量存储装置的放电终止电压来控制能量存储装置的系统和方法。 更具体地，在一个实施例中，该方法包括确定能量存储装置的放电终止电压阈值。 另一步包括通过滤波器过滤放电终止电压阈值。 该方法还包括基于至少一个电压 - 电流条件调整滤波器的时间常数。 还有一个步骤包括比较滤波的放电后电压阈值和能量存储装置的端电压。 基于该比较，该方法包括确定能量存储装置的状态变化。 因此，可以基于状态的变化来控制能量存储装置。