Constant voltage circuit for improvement of load transient response with stable operation in high frequency, and electronic device therewith

    公开(公告)号:US11835977B2

    公开(公告)日:2023-12-05

    申请号:US17602053

    申请日:2019-06-12

    Inventor: Kenji Mii

    CPC classification number: G05F1/40 G05F1/461 G05F3/04 G05F3/262

    Abstract: A constant voltage circuit amplifies an error between a reference voltage and an output voltage by an operational amplifier, and controls a load current based on the amplified voltage so that the output voltage becomes a constant voltage. The constant voltage circuit includes voltage detector means that detects only AC components of the output voltage limited to a predetermined band and outputs a detected voltage; voltage amplifier means that amplifies AC components of the detected voltage and outputs an amplified voltage; judgment means that outputs a judgment signal indicating whether or not the amplified voltage equal to or larger than a predetermined threshold; and controller means configured to increase a current value of the constant current source included in the operational amplifier, based on the judgment signal, thereby temporarily increasing a current consumption of the operational amplifier.

    Station building power supply device

    公开(公告)号:US09898027B2

    公开(公告)日:2018-02-20

    申请号:US14425663

    申请日:2012-09-05

    CPC classification number: G05F3/04 H02J9/062 H02M7/44 Y10T307/352

    Abstract: A station building power supply device according to the present invention includes: a station building power generation unit including an inverter main circuit and an inverter control circuit to control the inverter main circuit, in which the inverter main circuit converts a voltage supplied from an overhead wire into a voltage required by loads in a station building; a control-circuit power generation unit that converts a voltage supplied to the loads in the station building and generates an input voltage for the inverter control circuit; and a start-up power generation unit that converts a voltage supplied from the overhead wire and generates an input voltage for the inverter control circuit, in a state where the inverter main circuit has stopped the operation and the control-circuit power generation unit has stopped an operation of generating the input voltage for the inverter control circuit.

    Digital voltage controller
    6.
    发明授权

    公开(公告)号:US09791878B2

    公开(公告)日:2017-10-17

    申请号:US14418953

    申请日:2013-08-02

    Applicant: King Kuen Hau

    Inventor: King Kuen Hau

    CPC classification number: G05F3/08 G05F1/14 G05F3/04 H02J1/00 Y10T307/685

    Abstract: A high-efficiency digital voltage controller capable of providing monotonically-varying stepwise voltage, said controller comprises of a plurality of two-terminal voltage modules connected in series; within each module one or more two-terminal voltage cells of identical voltage each and connected in series; within each module a plurality of switches controllable to connect any number of the voltage cells in series to the output terminals of the voltage module; the ratios of the magnitudes of voltage of any one voltage cell between the voltage modules being substantially equal to integer values uniquely defined by present invention, according to the numbers of voltage cells in each of the voltage modules; said plurality of switches being controlled by a control module implemented in any suitable logic.

    Distributed Impedance Injection Module for Mitigation of the Ferranti Effect

    公开(公告)号:US20170160762A1

    公开(公告)日:2017-06-08

    申请号:US15345065

    申请日:2016-11-07

    Abstract: Disclosed is a method for reducing the variation in voltage, due to Ferranti effect, using the impedance injection capability of distributed impedance injection modules. The Ferranti effect is an increase in voltage occurring at the receiving end of a long transmission line in comparison to the voltage at the sending end. This effect is more pronounced on longer lies and underground lines when the high-voltage power lines are energized with a very low load, when there is a change from a high load to a very light load, or the load is disconnected from the high-voltage power lines of the power grid. This effect creates a problem for voltage control at the distribution end of the power grid.

    Programmable Temperature Compensated Voltage Generator
    8.
    发明申请
    Programmable Temperature Compensated Voltage Generator 有权
    可编程温度补偿电压发生器

    公开(公告)号:US20170031380A1

    公开(公告)日:2017-02-02

    申请号:US15081880

    申请日:2016-03-26

    CPC classification number: G05F3/16 G05F1/461 G05F3/04 H03M1/1047 H03M1/66

    Abstract: A programmable temperature compensated voltage reference is disclosed. In an exemplary embodiment, an apparatus includes a digital-to-analog converter (DAC) that uses a reference voltage and a code to generate a DAC output voltage. The apparatus also includes a temperature compensator that uses a temperature measurement (T) and the DAC code to generate a temperature compensation signal. The temperature compensation signal is represented by a third order polynomial equation. The apparatus also includes a signal combiner that combines the DAC output voltage and the temperature compensation signal to generate a temperature compensated programmable reference voltage.

    Abstract translation: 公开了可编程温度补偿电压基准。 在示例性实施例中,装置包括使用参考电压和代码来产生DAC输出电压的数模转换器(DAC)。 该装置还包括使用温度测量(T)和DAC代码产生温度补偿信号的温度补偿器。 温度补偿信号由三阶多项式方程表示。 该装置还包括组合DAC输出电压和温度补偿信号以产生温度补偿可编程参考电压的信号组合器。

    Control system for controlling a load via power-line communications
    9.
    发明授权
    Control system for controlling a load via power-line communications 有权
    通过电力线通信控制负载的控制系统

    公开(公告)号:US09480117B2

    公开(公告)日:2016-10-25

    申请号:US14354758

    申请日:2012-10-26

    Abstract: A control system includes a load including an operative part, and a control device for supplying AC power to the load through a power line and operating the operative part. The control device includes an interruption mechanism and a transmission mechanism. The load includes a controller. The transmission mechanism transmits a predetermined control signal to the load through the power line by blocking the power supply to the load by the interruption mechanism for a time duration shorter than a half cycle of AC output. The controller controls the operative part based on the control signal received from the control device.

    Abstract translation: 控制系统包括一个包括操作部分的负载,以及一个控制装置,用于通过电力线向负载提供交流电力并操作该操作部分。 控制装置包括中断机构和传输机构。 负载包括控制器。 传动机构通过中断机构阻塞对负载的电力供给时间短于交流输出的半周期,通过电力线路向负载发送预定的控制信号。 控制器基于从控制装置接收到的控制信号来控制操作部分。

    Electricity management apparatus and electricity management method
    10.
    发明授权
    Electricity management apparatus and electricity management method 有权
    电力管理设备和电力管理方法

    公开(公告)号:US09323271B2

    公开(公告)日:2016-04-26

    申请号:US13996874

    申请日:2010-12-24

    Applicant: Jongsoo Park

    Inventor: Jongsoo Park

    Abstract: An electricity management apparatus includes: a communication unit for receiving electricity information through a smart grid electricity information network, or transmitting electricity management information on an electronic device connected to a network through an internal network; a reference value setting unit for setting a total area, and setting a maximum allowable electricity reference value and an inspection electricity reference value corresponding to the set total area; and a controller for performing controlling to determine a management mode for each electronic device connected to the internal network, in consideration of an electricity proportional value comparing a current accumulated used electricity value comparing a current time to a certain time, when a current inspection used electricity value exceeds the set inspection electricity reference value, and to transmit the electricity management information corresponding to the determined management mode.

    Abstract translation: 电力管理装置包括:通过智能电网电力信息网络接收电力信息的通信单元,或者通过内部网络在与网络连接的电子设备上发送电力管理信息的通信单元; 参考值设定单元,用于设定总面积,并设定与设定的总面积对应的最大允许电力参考值和检查电力参考值; 以及控制器,用于执行控制以确定连接到内部网络的每个电子设备的管理模式,考虑到将当前时间与当前时间相比较的当前累积使用电力值与当前的时间进行比较的电比例值,当前的检查使用电 值超过设定的检查电力参考值,并且发送与所确定的管理模式相对应的电力管理信息。

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