公开(公告)号：US10012698B1

公开(公告)日：2018-07-03

申请号：US14670347

申请日：2015-03-26

Applicant: Amazon Technologies, Inc.

Inventor： Justin Lee Pulley ,  Hoang Pham ,  Jared Joseph Lee ,  John William Eichelberg

IPC: G01R31/02 ,  G01R31/327 ,  H02J9/06 ,  G01R31/40

CPC classification number: G01R31/3278 ,  G01R31/327 ,  G01R31/3272 ,  G01R31/40 ,  H02J9/061

Abstract: Systems, devices, and related methods for automated testing of an automatic transfer switch. A device for testing an automatic transfer switch includes a primary power supply input, a controlled primary power output, a primary power source selection assembly, an output electrical power monitor unit, and a control input. The power source selection assembly is controllable to enable selective communication of electrical power received via the primary power supply input to the controlled primary power output. The output electrical power monitor unit is configured to monitor electrical power supplied to a connected load via the automatic transfer switch. The control input is operatively coupled with the primary power source selection assembly and the output electrical power monitor unit to enable control of the operation of the primary power source selection assembly via an external controller and to transfer output from the output electrical power monitor unit to the external controller.

公开(公告)号：US10511186B1

公开(公告)日：2019-12-17

申请号：US15611684

申请日：2017-06-01

Applicant: Amazon Technologies, Inc.

Inventor： William Mische ,  Jared Joseph Lee ,  Richard Arvel Stevens

IPC: H02J9/06 ,  H01H47/00

Abstract: In an automatic transfer power supply with relay protection, multiple electric power sources may be selectively coupled with a switched-mode power supply circuit using multiple corresponding sets of relays. The switched-mode power supply circuit may include one or more switches that operate under the control of a switch controller element to implement the functionality of the switched-mode power supply. To protect the relays during source transfer, a source transfer controller may signal the switch controller element to halt current flow through the switched-mode power supply circuit, and then signal the relays to change state while the current flow is halted, thereby protecting the relays during source transfer. Sparking may be reduced in relays that physically move metal armatures to make and break electrical connections, prolonging relay life and/or reducing relay failures and improving power supply availability.

公开(公告)号：US09973006B1

公开(公告)日：2018-05-15

申请号：US14977369

申请日：2015-12-21

Applicant: Amazon Technologies, Inc.

Inventor： Huyen Van Nguyen ,  Richard Bradley Ernst ,  Jared Joseph Lee ,  Michael P. Czamara

IPC: H02J1/00 ,  H02J4/00 ,  G06F1/28

CPC classification number: G06F1/28 ,  H02J3/006 ,  H02J9/062 ,  H02J9/066

Abstract: Techniques are described for providing an automatic transfer switch (ATS), such as in a data center, to determine whether the power system coupled to a first power input on the ATS is the same power system or a different power system that is coupled to a second power input on the ATS. The ATS determines and compares the electrical characteristics (e.g., voltage, current harmonics, etc.) to determine if there is a difference between the determined characteristics. If the electrical characteristics are substantially similar, then a single power system is coupled to both power inputs on the ATS. But if the electrical characteristics are significantly different (e.g., the difference in the electrical characteristics is above a threshold), the power system coupled to one power input on the ATS is different from the power system coupled to the other power input on the ATS.