公开(公告)号：US20150219378A1

公开(公告)日：2015-08-06

申请号：US14421058

申请日：2013-08-21

申请人： Curtis Christian Crane ,  Mark Bodell, II ,  Curtis G. Rager ,  John C. Hasken ,  Dean K. Norbeck

发明人： Curtis Christian Crane ,  Mark Bodell, II ,  Curtis G. Rager ,  John C. Hasken ,  Dean K. Norbeck

IPC分类号： F25B49/02

CPC分类号： F25B49/022 ,  F25B49/025 ,  F25B2600/021 ,  F25B2600/0253 ,  F25B2700/151 ,  H02P23/0004 ,  H02P29/025 ,  Y02B30/741

摘要： A chiller system includes a compressor, a condenser and an evaporator in fluid communication. A motor drives the compressor. A variable speed drive powers the motor. An oil heater and pump system circulate heated lubricating oil in the compressor. A control panel is arranged to determine whether an input parameter is greater than or equal to a threshold parameter; deactivate the VSD in response to sensing that the input parameter is less than the threshold parameter; determine at least one chiller capacity control parameter at a point when the VSD is deactivated, and maintain the at least one chiller capacity control parameter while the VSD is deactivated; determine that the input parameter has been restored; determine a motor rotation and motor rotational speed; and in response to determining that the input parameter is restored and the motor is rotating in a forward direction, reactivate the VSD.

摘要翻译： 冷却器系统包括流体连通的压缩机，冷凝器和蒸发器。 电机驱动压缩机。 变速驱动器为电机供电。 油加热器和泵系统在压缩机中循环加热的润滑油。 控制面板被布置为确定输入参数是否大于或等于阈值参数; 响应于感测输入参数小于阈值参数，停用VSD; 在VSD停用时确定至少一个冷冻机容量控制参数，并且在VSD停用时保持至少一个制冷机容量控制参数; 确定输入参数已被恢复; 确定电机旋转和电机转速; 并且响应于确定输入参数被恢复并且电动机沿正向旋转，重新激活VSD。