公开(公告)号：US09667094B1

公开(公告)日：2017-05-30

申请号：US15168334

申请日：2016-05-31

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Pascal Kam

IPC: H02J7/00 ,  H02J9/00

CPC classification number: H02J9/00 ,  H02J5/00 ,  H02J7/0021 ,  H02J7/0052 ,  H02J7/0063 ,  H02J7/0068 ,  H02J7/007 ,  H02J7/0081 ,  H02J7/02 ,  H02J9/061 ,  H02J2007/0059 ,  Y10T307/615

Abstract: Methods and systems supply uninterrupted power to a load using a backup battery module. A driver circuit connects the load and the backup battery module such that the operational range of the load voltage is narrower than the operational range of the battery voltage. Different charging and discharging paths of the driver circuit may be used to limit the DC bus voltage to values lower than the battery voltage. The proposed systems and methods can increase power efficiency and decrease the cost of power supply and conversion operations.

公开(公告)号：US09634512B1

公开(公告)日：2017-04-25

申请号：US14095498

申请日：2013-12-03

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Mark R. Imbertson

IPC: H02J7/00

CPC classification number: H02J9/061 ,  H02J7/0031 ,  H02J7/0052 ,  H02J2007/0037 ,  H02J2007/0039 ,  H02J2007/0059

Abstract: An electronic uninterruptible power supply unit includes one or more battery connections. A bi-directional converter is in electrical communication with the one or more battery connections and arranged to (a) provide power at a first controlled voltage from the one or more battery connections as a boost converter when power is determined to not be available from a power source; and (b) provide charge to the one or more battery connections by providing power at a second controlled voltage that is different from the first controlled voltage when power is determined to be available from the power source. First and second MOSFET switches are connected in series with the one or more battery connections and arranged as a bi-directional switch that controls charging current for the one or more battery connections.

公开(公告)号：US20170025891A1

公开(公告)日：2017-01-26

申请号：US14808917

申请日：2015-07-24

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Anand Ramesh

IPC: H02J9/06 ,  H02J7/00

CPC classification number: H02J9/061 ,  H02J1/10 ,  H02J7/0031 ,  H02J7/0068 ,  H02J7/0077

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for controlling a battery power source. In one aspect, a system includes a first MOSFET having a first gate, a first source, and a first drain. A second MOSFET having a second gate, a second source, and a second drain. The first source is connected to the second source, and the second drain is coupled to a ground. A control circuit connected to the first gate and the second gate and that provides control signals to the first gate and the second gate that cause the first and second MOSFETS to operate in saturation regions during a first operational state to cause the first power source to discharge and the first MOSFET operates in a linear region during a second operational state to limit a charging current that charges the first power source.

Abstract translation: 方法，系统和装置，包括在计算机存储介质上编码的用于控制电池电源的计算机程序。 一方面，系统包括具有第一栅极，第一源极和第一漏极的第一MOSFET。 具有第二栅极，第二源极和第二漏极的第二MOSFET。 第一源连接到第二源，并且第二漏极耦合到地。 连接到第一栅极和第二栅极的控制电路，并且向第一栅极和第二栅极提供控制信号，使得第一和第二MOSFET在第一操作状态期间在饱和区域中工作，以使第一电源放电 并且第一MOSFET在第二操作状态期间在线性区域中工作，以限制对第一电源充电的充电电流。

公开(公告)号：US09392720B1

公开(公告)日：2016-07-12

申请号：US13798759

申请日：2013-03-13

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Honggang Sheng ,  Ken Krieger

IPC: G06F1/16 ,  H05K5/00 ,  H05K7/00 ,  H05K7/14

CPC classification number: H05K7/1492

Abstract: A server rack with vertically stacked shelves is disclosed. The shelves are used for housing loads (e.g. servers) and power supply units. Thus, both the power supply units and the servers are vertically stacked in the rack. An array of vertical and horizontal busses is secured to the back side of the server rack to electrically couple the servers with the power supply units. The arrangement of the PSUs and the busses provides for uniform current density across the server rack. The devices placed on the shelves are accessible and serviceable from the front of the server rack. The server rack can be placed within or secured to a device, system or a server room in a vertical orientation, a horizontal orientation or at an angle.

Abstract translation: 公开了一种具有垂直堆叠的货架的服务器架。 货架用于外壳负载（如服务器）和电源单元。 因此，电源单元和服务器都垂直地堆叠在机架中。 一系列垂直和水平总线固定在服务器机架的背面，以将服务器与电源单元电连接。 PSU和总线的布置提供了跨服务器机架的均匀电流密度。 放置在货架上的装置可从服务器机架的前部进行访问和维修。 服务器机架可以放置在设备，系统或服务器机房内或垂直方向，水平方向或以一定角度固定。

公开(公告)号：US09032250B1

公开(公告)日：2015-05-12

申请号：US13668473

申请日：2012-11-05

Applicant: Google Inc.

Inventor： Ken Krieger ,  Sangsun Kim

IPC: G06F11/00 ,  G01R19/22

CPC classification number: G01R19/22 ,  G01R31/40 ,  G06F1/28 ,  G06F11/24

Abstract: A power delivery system includes a power supply unit, a secondary power unit, a controller, and a monitor. The power supply unit is configured to receive primary power and provide operating DC power to a DC load. The secondary power unit is configured to store energy from the primary power. The controller is configured to control the secondary power unit during a testing period such that the secondary power unit uses the stored energy to provide secondary DC power to the load instead of the operating DC power. The monitor is configured to monitor the operation of the secondary power unit during the testing period and provide a signal indicative of whether the secondary power unit operated within defined parameters during the testing period.

Abstract translation: 电力输送系统包括电源单元，次级电源单元，控制器和监视器。 电源单元配置为接收主电源，并向直流负载提供运行的直流电源。 辅助电源单元被配置为存储来自主电源的能量。 控制器被配置为在测试周期期间控制次级功率单元，使得次级功率单元使用所存储的能量来向负载提供次级直流电力，而不是运行的DC功率。 监视器被配置为在测试期间监视次级电源单元的操作，并提供指示次级电源单元在测试期间是否在定义的参数内运行的信号。

公开(公告)号：US09692309B1

公开(公告)日：2017-06-27

申请号：US15378554

申请日：2016-12-14

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Eduardo M. Lipiansky

IPC: G01R21/00 ,  H02M5/04 ,  H02M1/12 ,  G01R19/175 ,  G01R31/42 ,  G01R19/25

CPC classification number: H02M5/04 ,  G01R19/175 ,  G01R19/2513 ,  G01R21/00 ,  G01R21/006 ,  G01R31/42 ,  G06F11/3058 ,  H02J3/00 ,  H02J3/01 ,  H02J13/0006 ,  H02M1/12

Abstract: Devices and methods for monitoring and determining alternating current (AC) power system parameters are provided. In some implementations, the device can include a processor; and at least one non-transitory computer-readable medium storing computer-executable instructions for implementing a number of components. The components include a monitor configured to: sense an AC line voltage signal and an AC current voltage signal; filter the AC line voltage signal; calculate average AC line voltage and current values based, at least, on a DC voltage and current values corresponding to the AC line voltage and current signals, respectively; determine fundamental AC line voltage and current signals based, at least, on zero crossings of the respective average AC line voltage value and the average AC line current value; and determine one or more AC power system parameters based, at least, on the fundamental AC line voltage signal and the fundamental AC line current signal.

公开(公告)号：US09490720B1

公开(公告)日：2016-11-08

申请号：US13800806

申请日：2013-03-13

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Jimmy Clidaras ,  Cornelius B. O'Sullivan ,  Anand Ramesh

IPC: H02M5/293 ,  H02M3/335 ,  H02M5/297 ,  H02M1/42 ,  H02M7/217

CPC classification number: H02M5/293 ,  H02M1/4208 ,  H02M5/225 ,  H02M5/297 ,  H02M7/217 ,  Y02B70/126

Abstract: An electric power supply unit includes a primary stage having an electric converter arranged to increase a frequency of AC power provided to an input of the power supply unit; a transformer stage connected to receive AC power from the primary stage and to reduce a voltage level of the AC power; and a secondary stage connected to receive the AC power at the reduced voltage level and the increased frequency and having a rectifier and power factor correction circuit arranged to convert the AC power to DC power and to provide power factor correction for power entering the power supply unit.

Abstract translation: 电力供应单元包括：初级级，其具有电转换器，其被布置成增加提供给电源单元的输入的AC电力的频率; 变压器级，其连接以从初级级接收AC电力并且降低AC电力的电压电平; 以及次级级，其以降低的电压电平和增加的频率接收AC电力，并且具有整流器和功率因数校正电路，其布置成将AC电力转换为DC电力，并为进入电源单元的功率提供功率因数校正 。

公开(公告)号：US09479077B1

公开(公告)日：2016-10-25

申请号：US14145713

申请日：2013-12-31

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Francisco J. Elias

IPC: H02M7/217 ,  H02M1/00

CPC classification number: H02M1/4216 ,  Y02B70/126

Abstract: An electric three-phase power supply system includes a primary stage arranged to receive an input of three-phase alternating current power; a transformer stage arranged to receive power from the primary stage and to reduce the three-phase AC power in voltage level, the transformer stage include an independent secondary winding for each of the phases in the alternating current power; a power factor correction (PFC) stage having a plurality of PFC units that each receive AC power for one of the phases in the alternating current power from the transformer stage; and a pair of output terminals that receive power form the PFC units, wherein output terminals of each of the PFC units are tied to each other, and ground terminals of each of the PFC units are tied to a common ground.

Abstract translation: 电三相电源系统包括：初级级，其被布置成接收三相交流电的输入; 变压器级布置成从初级级接收功率并且降低电压电平中的三相AC功率，变压器级包括用于交流电力中的每个相的独立次级绕组; 功率因数校正（PFC）级，其具有多个PFC单​​元，每个PFC单​​元各自接收来自变压器级的交流电力中的一个相的AC电力; 以及一对从PFC单元接收功率的输出端子，其中每个PFC单​​元的输出端彼此连接，并且每个PFC单​​元的接地端子被连接到公共地。