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公开(公告)号：US10746448B2
公开(公告)日：2020-08-18
申请号：US15495269
申请日：2017-04-24
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.
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公开(公告)号：US09605886B2
公开(公告)日：2017-03-28
申请号：US14168346
申请日：2014-01-30
发明人： Nathan Thomas West , Dennis Myron Beekman , David Marshall Foye , Korwin Jay Anderson , Benjamin James Sykora
CPC分类号： F25B49/022 , F04B49/065 , F04B49/20 , F04C18/0215 , F04C28/06 , F04C28/08 , F04D27/0261 , F25B1/04 , F25B2600/021 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152 , Y02B30/741
摘要： Systems and methods are used to control operation of a rotary compressor of a refrigeration system to limit or prevent movement of rotors due to axial thrust loading resulting from rapid changes in speed of the rotors of the compressor. The operational profile of the motor is controlled to maintain acceleration torque and deceleration torque within predefined limits. The acceleration torque and deceleration torque are maintained within the predefined limits by controlling the speed of the motor, or by controlling the torque applied by the motor to the rotors during acceleration or deceleration.
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3.发明申请公开(公告)号：US20150330693A1
公开(公告)日：2015-11-19
申请号：US14813348
申请日：2015-07-30
IPC分类号： F25B49/02
摘要： Apparatuses, methods, and systems of multiple load control for variable frequency drive harmonic mitigation are disclosed. An exemplary embodiment includes a system including a plurality of loads including at least one compressor configured to compress refrigerant. The plurality of loads are driven by a plurality of electric motors. The plurality of electric motors are driven by a plurality of variable frequency drives. The plurality of variable frequency drives are electrically coupled to an AC source. In operation a desired cooling capacity of the system is determined, a harmonic mitigation control parameter is determined, and output of one or more of the variable frequency drives is activated, deactivated, adjusted or modulated to reduce the input harmonics and provide the desired cooling capacity.
摘要翻译： 公开了用于变频驱动谐波抑制的多重负载控制的装置，方法和系统。 示例性实施例包括包括多个负载的系统，所述负载包括构造成压缩制冷剂的至少一个压缩机。 多个负载由多个电动机驱动。 多个电动机由多个变频驱动器驱动。 多个可变频率驱动器电耦合到AC电源。 在操作中，确定系统的期望的冷却能力，确定谐波缓解控制参数，并且激活，去激活，调节或调制一个或多个变频驱动器的输出，以减少输入谐波并提供所需的制冷量 。
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公开(公告)号：US09647591B2
公开(公告)日：2017-05-09
申请号：US14751481
申请日：2015-06-26
CPC分类号： H02P6/14 , G01R31/34 , G01R31/343 , H02P21/14 , H02P21/141 , H02P29/024 , H02P29/60 , H02P29/662
摘要： Techniques for motor magnet degradation controls and diagnostics are disclosed. An exemplary technique determines q-axis current, d-axis current, q-axis voltage, and/or d-axis voltage of a permanent magnet motor based upon sensed current and voltage information of the motor. This information is utilized to determine flux information. The flux information is utilized in evaluating collective state conditions of a plurality of motor magnets and evaluating localized state conditions of a subset of the plurality of motor magnets. The evaluations can be used to identify degradation or damage to one or more of the magnets which may occur as a result of elevated temperature conditions, physical degradation, or chemical degradation.
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公开(公告)号：US09568208B2
公开(公告)日：2017-02-14
申请号：US14681750
申请日：2013-10-08
CPC分类号： F24F11/02 , F24F11/0009 , F24F11/30 , F24F11/89 , F25B49/025 , F25B2600/0253
摘要： Embodiments of a HVAC electrical system power supply packaging system within an ultimate enclosure are provided. The HVAC electrical system power supply packaging system provides serviceability, safety, manufacturability, and system management failure diagnostic reporting enhancements over conventional packaging systems while conforming to agency safety requirements. The embodiments disclosed herein also reduce equipment and service costs for HVAC electrical system power supply components provided within the HVAC electrical system power supply packaging system by reducing delays in servicing these components. Thus, customer uptime of the HVAC system can be increased.
摘要翻译： 提供了在最终外壳内的HVAC电气系统电源封装系统的实施例。 HVAC电气系统电源包装系统在符合机构安全要求的同时，提供超过常规包装系统的可维护性，安全性，可制造性和系统管理故障诊断报告增强功能。 本文公开的实施例还通过减少维修这些部件的延迟来降低在HVAC电气系统电源包装系统内提供的HVAC电力系统供电部件的设备和服务成本。 因此，可以增加HVAC系统的客户正常运行时间。
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公开(公告)号：US20150327399A1
公开(公告)日：2015-11-12
申请号：US14802294
申请日：2015-07-17
IPC分类号： H05K7/20
CPC分类号： H05K7/20254 , H01L23/427 , H01L2924/0002 , H02P27/04 , H02P29/60 , H05K7/20945 , H01L2924/00
摘要： Operation of a variable frequency in a manner configured to avoid overheating is provided. In one form, a method includes providing a variable frequency drive that includes a switching device in thermal communication with a heat sink including a thermal mass. The method further includes operating the drive in a first mode before active cooling of the heat sink is established and a second mode following the first mode. Operation of the drive in the first mode includes operating the switching device in a first switching frequency mode, and the first switching frequency mode and the thermal mass of the heat sink are selected to provide a temperature of the switching device below a predetermined threshold before active cooling of the heat sink is established. Further embodiments, forms, features, and aspects shall become apparent from the description and drawings.
摘要翻译： 提供以避免过热的方式操作可变频率。 在一种形式中，一种方法包括提供包括与包括热质量的散热器热连通的开关装置的变频驱动器。 该方法还包括在建立散热器的主动冷却之前以第一模式操作驱动器，以及在第一模式之后的第二模式。 在第一模式中的驱动器的操作包括以第一开关频率模式操作开关装置，并且选择散热器的第一开关频率模式和热质量以在开关之前将开关装置的温度提高到预定阈值以下 确定了散热器的冷却。 从描述和附图，其他实施例，形式，特征和方面将变得显而易见。
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公开(公告)号：US10295239B2
公开(公告)日：2019-05-21
申请号：US14849762
申请日：2015-09-10
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.
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公开(公告)号：US20160056750A1
公开(公告)日：2016-02-25
申请号：US14791858
申请日：2015-07-06
发明人： Nathan Thomas West , Benjamin James Sykora , Korwin Jay Anderson , Matthew August Shepeck , David Marshall Foye
IPC分类号： H02P29/02
CPC分类号： H02P29/024 , G01R31/025 , G01R31/026 , G01R31/42 , H02M1/32 , H02M1/36 , H02M5/458 , H02M7/53871 , H02P1/022 , H02P29/0241
摘要： Diagnostic and/or control methods, systems and apparatuses for variable frequency drives are disclosed. The variable frequency drive may be controlled by a controller that may conduct one or more tests or evaluations. The tests or evaluations may include determining whether a switching device in the variable frequency drive is open-circuited, short-circuited, or operating normally. The tests may include determining whether current provided at an inverter output of the variable frequency drive is within a predetermined range. An exemplary embodiment evaluates the drive for a short circuit condition, an open circuit condition, and a sensor error or failure condition, controls operation of the drive based upon these one or more evaluations, may abort operation of the drive based upon one or more evaluations, and may set a fault code indicative of the type of error encountered.
摘要翻译： 公开了用于变频驱动器的诊断和/或控制方法，系统和装置。 变频驱动器可以由可执行一个或多个测试或评估的控制器来控制。 测试或评估可以包括确定变频驱动器中的开关装置是否断路，短路或正常工作。 测试可以包括确定提供在变频驱动器的逆变器输出处的电流是否在预定范围内。 一个示例性实施例评估用于短路状态，开路状况和传感器错误或故障状况的驱动器，基于这些一个或多个评估来控制驱动器的操作，可以基于一个或多个评估中止驱动器的操作 ，并且可以设置指示遇到的错误类型的故障代码。
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公开(公告)号：US20150377536A1
公开(公告)日：2015-12-31
申请号：US14849762
申请日：2015-09-10
发明人： Nathan Thomas West , Benjamin James Sykora , David Marshall Foye , Dennis Myron Beekman , Korwin Jay Anderson , Robert Bakkestuen
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。
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10.发明申请MAGNET DEGRADATION AND DAMAGE CONTROLS AND DIAGNOSTICS FOR PERMANENT MAGNET MOTORS 有权永磁电机的磁铁降解和损伤控制与诊断公开(公告)号：US20150357955A1
公开(公告)日：2015-12-10
申请号：US14751481
申请日：2015-06-26
CPC分类号： H02P6/14 , G01R31/34 , G01R31/343 , H02P21/14 , H02P21/141 , H02P29/024 , H02P29/60 , H02P29/662
摘要： Techniques for motor magnet degradation controls and diagnostics are disclosed. An exemplary technique determines q-axis current, d-axis current, q-axis voltage, and/or d-axis voltage of a permanent magnet motor based upon sensed current and voltage information of the motor. This information is utilized to determine flux information. The flux information is utilized in evaluating collective state conditions of a plurality of motor magnets and evaluating localized state conditions of a subset of the plurality of motor magnets. The evaluations can be used to identify degradation or damage to one or more of the magnets which may occur as a result of elevated temperature conditions, physical degradation, or chemical degradation.
摘要翻译： 公开了用于电动机磁体退化控制和诊断的技术。 一种示例性技术基于感测到的电动机的电流和电压信息确定永磁电动机的q轴电流，d轴电流，q轴电压和/或d轴电压。 该信息用于确定通量信息。 通量信息用于评估多个电动机磁体的集体状态，并评估多个电动机磁体的子集的局部状态条件。 评估可用于鉴定由于升高的温度条件，物理降解或化学降解而可能发生的一种或多种磁体的降解或损坏。
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