公开(公告)号：US09680388B2

公开(公告)日：2017-06-13

申请号：US14870269

申请日：2015-09-30

Applicant: EATON CORPORATION

Inventor： Stan Rex Simms ,  Irving Albert Gibbs

IPC: H02M7/515 ,  H02M5/42 ,  H02M1/32

CPC classification number: H02M5/42 ,  H02H11/005 ,  H02M1/32 ,  H02M5/45

Abstract: In one embodiment, a variable frequency drive system includes a main contactor, a variable frequency drive, a charging module structured to generate a magnetizing AC voltage, wherein the charging module is structured to selectively provide the magnetizing AC voltage to a transformer of the variable frequency drive, and a sensing and control circuit having a number of sensors operably associated with the variable frequency drive. The sensing and control circuit is structured to detect a short circuit condition in the variable frequency drive when the magnetizing AC voltage is provided to the transformer based on an output of at least one of the number of sensors, and responsive thereto prevent the main contactor from being closed and thereby prevent the main AC voltage from being provided to the transformer.

公开(公告)号：US20180278192A1

公开(公告)日：2018-09-27

申请号：US15467711

申请日：2017-03-23

Applicant: Eaton Corporation

Inventor： Stan Rex Simms ,  John David Maurin ,  Thomas Arthur Farr

IPC: H02P27/06 ,  H02M3/158 ,  H02M7/06

CPC classification number: H02M7/06 ,  H02M2001/322

Abstract: An apparatus, such as a variable frequency drive (VFD), includes a rectifier, a DC bus coupled to an output of the rectifier and at least one capacitor coupled to the DC bus. The apparatus further includes a normally-conducting switch coupled to the DC bus and configured to discharge the at least one capacitor in a conducting state and a control circuit configured to control the normally-conducting switch responsive to an input to the rectifier. The control circuit may be configured to control the normally-conducting switch responsive to a voltage at the input of the rectifier. The control circuit may include a regulator circuit having an input coupled to the input of the rectifier and a driver circuit coupled to an output of the regulator circuit and configured to drive a control terminal of the normally-conducting switch.

公开(公告)号：US09385638B2

公开(公告)日：2016-07-05

申请号：US14527876

申请日：2014-10-30

Applicant: EATON CORPORATION

Inventor： Stan Rex Simms

IPC: H02P1/24 ,  H02P3/14

CPC classification number: H02P3/14 ,  H02J3/18 ,  H02P27/06 ,  Y02E40/30

Abstract: A system, and associated method, for controlling a motor drive coupled to an AC power source in a condition wherein the motor drive is generating a regenerative current. The system includes a plurality of electronic switching devices structured to be provided in anti-parallel connection with a plurality of rectifier diodes of the motor drive, and a controller structured and configured to receive a number of phase voltages from the AC power source, determine a grid angle for the AC power source using the number of phase voltages, and generate a number of control signals for controlling the electronic switching devices using the grid angle when the motor drive is generating the regenerative current.

Abstract translation: 一种用于控制在电动机驱动器产生再生电流的状态下耦合到AC电源的电机驱动器的系统和相关联的方法。 该系统包括被构造成与马达驱动器的多个整流二极管反并联连接的多个电子开关装置，以及构造和配置为从AC电源接收多个相电压的控制器， 使用相电压数量的AC电源的电网角度，并且当电动机驱动器产生再生电流时，生成用于控制电子开关装置使用电网角度的多个控制信号。