公开(公告)号：US10746448B2

公开(公告)日：2020-08-18

申请号：US15495269

申请日：2017-04-24

申请人： TRANE INTERNATIONAL INC.

发明人： Benjamin James Sykora ,  Nathan Thomas West ,  David Marshall Foye ,  Dennis Myron Beekman ,  Korwin Jay Anderson ,  Robert Bakkestuen

IPC分类号： F25B49/02 ,  F04C28/28 ,  F04C18/16 ,  F25B31/02 ,  F04C18/02 ,  F04C28/04 ,  F04C28/08 ,  F04C29/00 ,  G05D23/00 ,  F25B1/00

摘要： A system includes a refrigerant compressor, an electric motor and configured to drive the refrigerant compressor, and a controller. The controller is configured to operate the compressor in a liquid clearing start mode where electrical current through the motor is prevented from exceeding a predetermined current limit for a period of time not to exceed a predetermined period of time, and is configured to operate the compressor in a run mode in response to determining the motor exceeds a predetermined speed threshold at or before expiration of the predetermined period of time, wherein the run mode does not prevent electrical current through the motor from exceeding said predetermined current limit.

公开(公告)号：US20170227273A1

公开(公告)日：2017-08-10

申请号：US15495269

申请日：2017-04-24

申请人： TRANE INTERNATIONAL INC.

发明人： NATHAN THOMAS WEST ,  Benjamin James Sykora ,  David Marshall Foye ,  Dennis Myron Beekman ,  Korwin Jay Anderson ,  Robert Bakkestuen

IPC分类号： F25B49/02 ,  F04C29/00 ,  F04C28/04 ,  F04C28/08 ,  F04C18/02 ,  F04C18/16

摘要： Unique apparatuses, methods, and systems of opposing, limiting, and/or preventing undesired or un-commanded compressor rotation are disclosed. One exemplary embodiment is an HVACR system comprising a variable frequency drive configured to drive an electric motor to rotate a screw compressor or scroll compressor. A controller is configured to monitor various aspects of the system and to control the drive. When a condition indicative of potential undesired or un-commanded compressor rotation is identified, the controller commands the variable frequency drive to control the motor to limit and preferably prevent compressor rotation. One technique comprises shorting switches of the drive to a DC bus rail to allow back EMF induced current in the motor windings to be dissipated through winding resistance thus providing a damping force. Another technique comprises controlling the inverter to insert a DC current into the motor to cause the motor to align to and hold a particular position.

公开(公告)号：US10295239B2

公开(公告)日：2019-05-21

申请号：US14849762

申请日：2015-09-10

申请人： TRANE INTERNATIONAL INC.

发明人： Nathan Thomas West ,  Benjamin James Sykora ,  David Marshall Foye ,  Dennis Myron Beekman ,  Korwin Jay Anderson ,  Robert Bakkestuen

IPC分类号： F25B49/02 ,  F04C28/28 ,  F04C18/16 ,  F25B31/02 ,  F04C18/02 ,  F04C28/04 ,  F04C28/08 ,  F04C29/00 ,  G05D23/00 ,  F25B1/00

摘要： A system includes a refrigerant circuit including a compressor, a condenser, an expander, an electric motor configured to drive the compressor, and a controller configured to control a motor drive to drive the electric motor. The controller is configured to first evaluate whether the compressor is idle based upon a control state of the controller being configured not to operate the motor drive to drive the motor, second, in response to an affirmative evaluation that the compressor is idle, evaluate a risk of undesired or un-commanded compressor rotation based upon a combination of two or more system conditions, each of the two or more system conditions indicating the risk of undesired or un-commanded compressor rotation, and third, in response to an affirmative evaluation of the risk of undesired or un-commanded compressor rotation, control the motor drive to oppose rotation of the compressor.

公开(公告)号：US20150377536A1

公开(公告)日：2015-12-31

申请号：US14849762

申请日：2015-09-10

申请人： TRANE INTERNATIONAL INC.

发明人： Nathan Thomas West ,  Benjamin James Sykora ,  David Marshall Foye ,  Dennis Myron Beekman ,  Korwin Jay Anderson ,  Robert Bakkestuen

IPC分类号： F25B49/02 ,  F25B31/02

CPC分类号： F25B49/022 ,  F04C18/02 ,  F04C18/0215 ,  F04C18/16 ,  F04C28/04 ,  F04C28/08 ,  F04C28/28 ,  F04C29/0085 ,  F04C2240/40 ,  F04C2240/403 ,  F04C2240/808 ,  F04C2270/02 ,  F04C2270/80 ,  F04C2270/86 ,  F25B1/00 ,  F25B31/02 ,  F25B49/025 ,  F25B2339/047 ,  F25B2500/28 ,  F25B2600/021 ,  F25B2600/0253 ,  F25B2700/151 ,  F25B2700/171 ,  G05D23/00 ,  Y02B30/741

摘要： Unique apparatuses, methods, and systems of opposing, limiting, and/or preventing undesired or un-commanded compressor rotation are disclosed. One exemplary embodiment is an HVACR system comprising a variable frequency drive configured to drive an electric motor to rotate a screw compressor or scroll compressor. A controller is configured to monitor various aspects of the system and to control the drive. When a condition indicative of potential undesired or un-commanded compressor rotation is identified, the controller commands the variable frequency drive to control the motor to limit and preferably prevent compressor rotation. One technique comprises shorting switches of the drive to a DC bus rail to allow back EMF induced current in the motor windings to be dissipated through winding resistance thus providing a damping force. Another technique comprises controlling the inverter to insert a DC current into the motor to cause the motor to align to and hold a particular position.

摘要翻译： 公开了相反，限制和/或防止不期望或未命令的压缩机旋转的独特装置，方法和系统。 一个示例性实施例是HVACR系统，其包括被配置为驱动电动机以旋转螺杆压缩机或涡旋压缩机的变频驱动器。 控制器被配置为监视系统的各个方面并控制驱动器。 当指示潜在的不希望的或未命令的压缩机旋转的条件被识别时，控制器命令变频驱动器来控制电动机以限制并优选地防止压缩机旋转。 一种技术包括将驱动器的开关短路到DC总线轨道，以允许马达绕组中的反电动势感应电流通过绕组电阻消散，从而提供阻尼力。 另一种技术包括控制逆变器以将直流电流插入到电动机中以使电动机对准和保持特定的位置。