Spread spectrum power converter with duty-cycle error compensation
    1.
    发明授权
    Spread spectrum power converter with duty-cycle error compensation 失效
    具有占空比误差补偿的扩频功率转换器

    公开(公告)号:US07525296B2

    公开(公告)日:2009-04-28

    申请号:US11506627

    申请日:2006-08-18

    IPC分类号: G05F1/56

    CPC分类号: H02M7/2176 H02M3/156

    摘要: A spread-spectrum power converter uses an inter-cycle duty-cycle error compensation to achieve a combination of high-precision tracking of a target average duty cycle and a favorable noise signature. The pulse train consists of a series of cycles having cycle durations of a positive integer of clock cycles, pulse durations of a whole number of clock cycles, and duty cycles corresponding to a ratio of pulse durations over cycle durations. The pulse durations are selected at least in part as functions of a target average duty cycle, the respective cycle durations, and a ripple (or other) error from other cycles in the train. The cycle durations can also be in part a function of the target average duty cycle so that the duty cycle errors can be minimized.

    摘要翻译: 扩频功率转换器使用周期间占空比误差补偿来实现目标平均占空比的高精度跟踪和有利的噪声特征的组合。 脉冲串由一系列周期组成,具有周期持续时间为正整数的时钟周期,整个时钟周期的脉冲持续时间,以及对应于脉冲持续时间与循环持续时间的比率的占空比。 脉冲持续时间至少部分地作为目标平均占空比的函数,相应的循环持续时间以及来自列车中的其它周期的波动(或其他)误差来选择。 循环持续时间也可以部分地是目标平均占空比的函数,从而可以使占空比误差最小化。

    Power-conservation system for computer peripherals
    2.
    发明授权
    Power-conservation system for computer peripherals 失效
    计算机外围设备的节电系统

    公开(公告)号:US5477476A

    公开(公告)日:1995-12-19

    申请号:US91643

    申请日:1993-07-14

    IPC分类号: G06F1/32 G06F3/03

    摘要: A power conservation system (PCS) includes a data handler, a controller and a power switch. The data handler is located between a host network and a network printer, while the power switch is between an AC power source and the printer's power input. The PCS can thus shut down the printer during periods when no data is being sent to the printer. The PCS monitors data to and from the printer, allowing it to track the printer's state and to capture its network identification. State tracking permits the PCS to emulate the printer when it is down and when it is booting. Additionally, the information stored in a state memory of the data handler can permit the printer's last ready state to be reconstructed after it turns on and boots to a ready state. In some cases, the data handler can answer network requests without turning on the printer. Thus, the PCS provides for effective power conservation while remaining invisible to a user.

    摘要翻译: 省电系统(PCS)包括数据处理器,控制器和电源开关。 数据处理器位于主机网络和网络打印机之间,而电源开关位于交流电源和打印机的电源输入之间。 因此,PCS可以在没有数据发送到打印机的期间关闭打印机。 PCS监视来自打印机的数据,允许它跟踪打印机的状态并捕获其网络标识。 状态跟踪允许PCS在打印机关闭时以及启动时模拟打印机。 此外,存储在数据处理器的状态存储器中的信息可以允许打印机的上次就绪状态在其打开并重新启动并启动到就绪状态之后被重建。 在某些情况下,数据处理程序可以在不打开打印机的情况下回答网络请求。 因此,PCS提供有效的功率节省,同时对用户不可见。

    Spread spectrum power converter with duty-cycle error compensation
    4.
    发明申请
    Spread spectrum power converter with duty-cycle error compensation 失效
    具有占空比误差补偿的扩频功率转换器

    公开(公告)号:US20080043502A1

    公开(公告)日:2008-02-21

    申请号:US11506627

    申请日:2006-08-18

    IPC分类号: H02M7/48

    CPC分类号: H02M7/2176 H02M3/156

    摘要: A spread-spectrum power converter uses an inter-cycle duty-cycle error compensation to achieve a combination of high-precision tracking of a target average duty cycle and a favorable noise signature. The pulse train consists of a series of cycles having cycle durations of a positive integer of clock cycles, pulse durations of a whole number of clock cycles, and duty cycles corresponding to a ratio of pulse durations over cycle durations. The pulse durations are selected at least in part as functions of a target average duty cycle, the respective cycle durations, and a ripple (or other) error from other cycles in the train. The cycle durations can also be in part a function of the target average duty cycle so that the duty cycle errors can be minimized.

    摘要翻译: 扩频功率转换器使用周期间占空比误差补偿来实现目标平均占空比的高精度跟踪和有利的噪声特征的组合。 脉冲串由一系列周期组成,具有周期持续时间为正整数的时钟周期,整个时钟周期的脉冲持续时间,以及对应于脉冲持续时间与循环持续时间的比率的占空比。 脉冲持续时间至少部分地作为目标平均占空比的函数,相应的循环持续时间以及来自列车中的其它周期的波动(或其他)误差来选择。 循环持续时间也可以部分地是目标平均占空比的函数,从而可以使占空比误差最小化。

    Phase-controlled power modulation system
    6.
    发明授权
    Phase-controlled power modulation system 失效
    相控电源调制系统

    公开(公告)号:US5239255A

    公开(公告)日:1993-08-24

    申请号:US659101

    申请日:1991-02-20

    摘要: A phase-controlled power modulation system switches modes in response to circuit-threatening conditions to avert the necessity of a shutdown. Normal operation is in reverse phase control (RPC) mode. When an inductive load sensor detects the presence an inductive load, the system switches to a forward phase control (FPC) mode (FPC) to minimize voltage spikes that would otherwise result from the load's opposition to voltage transitions. When an overcurrent sensor detects an overcurrent, the system switches into an asymmetric hybrid mode (AHPC) to maximize delivered power while remaining within switch current handling capacity. In AHPC mode, an RPC component of a half-cycle waveform is cut off at the current limit, while an FPC component of the same half-cycle waveform is triggered after the source voltage drops to a confidence threshold below the current limit to ensure that current limiting is not triggered again during the same half-cycle. In response to excessive temperature, a short transition mode is entered to reduce the heat generated at the switches until the temperature abates.

    摘要翻译: 相位控制的功率调制系统响应于电路威胁的条件切换模式,以避免关闭的必要性。 正常操作是反相控制(RPC)模式。 当感性负载传感器检测到感应负载时,系统切换到正向相位控制(FPC)模式(FPC),以最大限度地减少由负载与电压转换相反的电压尖峰。 当过流传感器检测到过电流时,系统切换到非对称混合模式(AHPC),以最大化传输功率,同时保持开关当前的处理能力。 在AHPC模式下,半电流波形的RPC分量在电流极限被切断,而在源电压下降到低于当前极限的置信阈值之后,相同半周期波形的FPC分量被触发,以确保 电流限制在同一半周期内不会再次触发。 响应于过高的温度,进入短暂的过渡模式以减少在开关处产生的热量,直到温度降低。

    Method and apparatus for conserving power consumed by a refrigerated appliance utilizing dispensing event data signals
    7.
    发明授权
    Method and apparatus for conserving power consumed by a refrigerated appliance utilizing dispensing event data signals 有权
    利用分配事件数据信号来节省冷藏设备消耗的功率的方法和装置

    公开(公告)号:US06898942B2

    公开(公告)日:2005-05-31

    申请号:US10350567

    申请日:2003-01-24

    申请人: David J. Schanin

    发明人: David J. Schanin

    摘要: A refrigerated appliance that dispenses items includes a power source and a cooling system. Power control circuitry is electrically coupled between a power source (e.g., power cord coupled to a wall outlet) and components (for example, a compressor and one or more circulating fans of the cooling system) of the appliance. A controller, which is operably coupled to the power control circuitry, is adapted to manage the supply of electrical power to such components by intelligently transitioning between a normal-operation mode and at least one power-conserving mode. To achieve efficient power conservation, the controller automatically transitions between the at least one power-conserving mode and the normal-operation mode based upon at least one temperature signal, at least one dispensing event signal, and possibly other data signals supplied to the controller.

    摘要翻译: 分配物品的冷冻器具包括电源和冷却系统。 功率控制电路电耦合在电器(例如,耦合到墙壁出口的电源线)和器具的部件(例如,冷却系统的一个或多个循环风扇)之间。 可操作地耦合到功率控制电路的控制器适于通过在正常操作模式和至少一个功率节省模式之间智能地转换来管理向这些组件供电。 为了实现有效的功率节省,控制器基于至少一个温度信号,至少一个分配事件信号以及可能地提供给控制器的其它数据信号,在至少一个省电模式和正常操作模式之间自动转换。

    Power-conservation system based on indoor/outdoor and ambient-light determinations
    8.
    发明授权
    Power-conservation system based on indoor/outdoor and ambient-light determinations 有权
    基于室内/室外和环境光测定的节电系统

    公开(公告)号:US06801836B2

    公开(公告)日:2004-10-05

    申请号:US09899499

    申请日:2001-07-05

    申请人: David J. Schanin

    发明人: David J. Schanin

    IPC分类号: G05D1100

    摘要: A refrigerated vending machine provides separate power conservation modes for the cooling system and the panel lights. Power conservation for the panel lights takes into account whether the vending machine is located indoors or outdoors. The location can be indicated by a setting by the vending machine operator or may be determined automatically according to maximum brightness or color temperature. If the vending machine is outdoors, the panel lights are turned off when the ambient is bright (to save energy when the panel lights are not needed) and turned on when the ambient is dark (to attract customers). If the vending machine is indoors, the panel lights are turned off when the ambient is dark (since the room is presumably vacant) and turned on when the ambient is bright (indicating the room is in use). Optionally, an occupancy sensor can be used to turn off the panel lights if the room light is on but no one has been detected in it. The cooling system uses a conservation mode in which circulation fans are switched off so only items in a position to be dispensed first or second are kept at the desired temperature.

    摘要翻译: 冷藏自动售货机为冷却系统和面板灯提供单独的节电模式。 面板灯的节电考虑了自动售货机是否位于室内或室外。 该位置可以由自动售货机操作者的设置指示,或者可以根据最大亮度或色温来自动确定。 如果自动售货机在户外,当环境亮起时,面板灯熄灭(当不需要面板灯时节省能源),并且当环境黑暗时打开(吸引客户)。 如果自动售货机在室内,当环境黑暗(由于房间大概空闲)时,面板灯熄灭,当环境亮起时(表示房间正在使用中),则面板灯熄灭。 可选地,如果房间指示灯亮,但没有检测到,占用传感器可用于关闭面板灯。 冷却系统使用节流模式,其中循环风扇被关闭,因此只有处于待分配位置的物品被保持在期望的温度。

    Refrigerated vending machine exploiting expanded temperature variance during power-conservation mode

    公开(公告)号:US06581396B2

    公开(公告)日:2003-06-24

    申请号:US10151513

    申请日:2002-05-20

    申请人: David J. Schanin

    发明人: David J. Schanin

    IPC分类号: F25B100

    摘要: A refrigerated soda vending machine includes sensors for monitoring various parameters such as temperature within its refrigerated chamber and for monitoring occupancy in the chamber vicinity. Sensor data is used to determine when to switch between normal and power-conservation modes of operation. In either mode, a cooling system is regulated so that a compressor goes on when an upper internal temperature threshold is reached and off when a lower internal temperature threshold is reached. In normal mode, fans circulate air to maintain a relatively uniform temperature throughout the chamber. During power-conservation mode, the fans are mostly off when the compressor is off. In the absence of circulation, the temperature within the refrigerated chamber stratifies so that a lower cool zone and an upper warm zone can be differentiated. Soda cans are held in vertical stacks so that the lowest cans are located in the cool zone.

    External power management device with current monitoring precluding shutdown during high current
    10.
    发明授权
    External power management device with current monitoring precluding shutdown during high current 有权
    具有当前监控功能的外部电源管理器件可防止高电流关机

    公开(公告)号:US06243626B1

    公开(公告)日:2001-06-05

    申请号:US09182586

    申请日:1998-10-28

    申请人: David J. Schanin

    发明人: David J. Schanin

    IPC分类号: G05D1100

    摘要: An external power-management device controls the supply of electric power from a wall outlet to a refrigerated vending machine. The system includes a switch that couples power in an ON condition and decouples in an OFF condition. The switch is controlled by a controller based on data received from a current sensor, an occupancy sensor, a temperature sensor, and a time-of-year circuit. Upon startup, the current is monitored to determine maxima and minima for the vending machine. The system supplies power to the appliance during business hours as indicated by the time-of-year circuit and while the vicinity is occupied as determined by the occupancy sensor irrespective of the values for current and temperature. Absent the current sensor, the power would be decoupled after a predetermined duration of non-occupancy during nonbusiness hours. However, if the current sensor indicates a high (relative to the previously determined minima and maxima) current at the proposed shutdown time, shutdown is aborted to avoid interruption of a compression (cooling) cycle initiated by the vending machine. The temperature is used in determining when, after shutdown, power is resumed to permit vending machine contents to be cooled.

    摘要翻译: 外部电源管理装置控制从墙壁插座到冷藏自动售货机的电力供应。 该系统包括一个在ON状态下连接电源并在OFF状态下解耦的开关。 开关由控制器基于从当前传感器,占用传感器,温度传感器和时间电路接收的数据来控制。 启动时,监控电流以确定自动售货机的最大值和最小值。 系统在工作时间内为设备供电,如时间年限电路所示,并且由占用传感器确定的附近被占用,与当前和温度的值无关。 没有当前的传感器,在非工作时间内预定的非占用持续时间之后,电源将被去耦。 然而,如果当前传感器在所提出的关闭时间处指示高(相对于先前确定的最小值和最大值)电流,则停止关闭以避免中断自动售货机发起的压缩(冷却)循环。 温度用于确定关机后何时恢复供电以允许自动售货机内容物被冷却。