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公开(公告)号：US07081734B1
公开(公告)日：2006-07-25
申请号：US11218757
申请日：2005-09-02
IPC分类号： H02P27/04
CPC分类号： H02M7/797
摘要： A method of providing ride-through capability in a chiller/refrigeration system employs a variable speed drive with an active converter stage, a DC link stage and an inverter stage for providing variable frequency and voltage to power at least one motor. An induction motor is coupled to the output of the inverter stage for driving a compressor in the chiller/refrigeration system. The ride-through method comprises operating the active converter to regulate the DC link voltage of the DC link stage to a predetermined voltage level until the current through the active converter equals a predetermined current limit, then transferring regulation of the DC link to the inverter upon reaching the current limit of the converter. The compressor is unloaded, and the power flow through the inverter is reversed to maintain the voltage level of the DC link stage.
摘要翻译： 在冷冻机/制冷系统中提供穿越能力的方法采用具有有源转换器级，DC链路级和逆变器级的变速驱动器，用于提供可变频率和电压以对至少一个电动机供电。 感应电动机与变频器级的输出端连接，用于驱动冷冻机/制冷系统中的压缩机。 该直通方法包括操作有源转换器以将DC链路级的DC链路电压调节到预定电压电平，直到通过有源转换器的电流等于预定电流限制，然后将DC链路的调节转移到逆变器上 达到转换器的电流极限。 压缩机卸载，逆变器的功率流反转，以保持直流母线的电压电平。
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公开(公告)号：US07957166B2
公开(公告)日：2011-06-07
申请号：US11978939
申请日：2007-10-30
申请人： Harold R. Schnetzka , Ivan Jadric , Shreesha Adiga Manoor , Steve Hoover , Kathleen S. Rogers , Mustafa Kemal Yanik
发明人： Harold R. Schnetzka , Ivan Jadric , Shreesha Adiga Manoor , Steve Hoover , Kathleen S. Rogers , Mustafa Kemal Yanik
CPC分类号： H02M5/4585 , H02M7/003
摘要： Systems and methods for improved Variable Speed Drives are provided. One embodiment relates to apparatus for common mode and differential mode filtering for motor or compressor bearing protection when operating with Variable Speed Drives, including conducted EMI/RFI input power mains mitigation. Another embodiment relates to a method to extend the synchronous operation of an Active Converter to the AC mains voltage during complete line dropout. Another embodiment relates to an Active Converter-based Variable Speed Drive system with Improved Full Speed Efficiency. Another embodiment relates to a liquid- or refrigerant-cooled inductor. The liquid- or refrigerant-cooled inductor may be used in any application where liquid or refrigerant cooling is available and a reduction in size and weight of a magnetic component is desired.
摘要翻译： 提供了改进变频器的系统和方法。 一个实施例涉及用于在使用变速驱动器（包括传导的EMI / RFI输入电源减轻）操作时用于电机或压缩机轴承保护的共模和差模过滤的装置。 另一个实施例涉及在完整的线路断开期间将有源转换器的同步操作扩展到AC电源电压的方法。 另一实施例涉及具有改进的全速效率的基于有源转换器的变速驱动系统。 另一个实施例涉及液体或制冷剂冷却的电感器。 液体或冷却剂冷却的电感器可以用于可用液体或制冷剂冷却的任何应用中，并且期望磁性部件的尺寸和重量的减小。
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公开(公告)号：US07746020B2
公开(公告)日：2010-06-29
申请号：US11931993
申请日：2007-10-31
IPC分类号： G05D23/275
CPC分类号： H02M1/12 , F25B49/025 , F25B2600/021 , H02M2001/123 , H02P27/08 , H02P29/50 , H02P2201/03 , H03L7/093 , H03L7/095 , H05K7/20936 , Y02B30/741
摘要： Systems and methods for improved Variable Speed Drives having active inverters include an input filter for filtering common mode and differential mode currents. A three-phase inductor has three windings, each winding of the three-phase inductor having a center tap dividing each winding into a pair of inductor sections; and a three-phase input capacitor bank connected in a wye configuration to the three center taps at one end, and to a common point at the opposite end. The three-phase input capacitor bank provides a short circuit for frequencies above a predetermined fundamental frequency for shunting such frequencies through the three phase capacitor bank, while passing the predetermined fundamental frequency to an input AC power source.
摘要翻译： 具有有源反相器的改进型变速驱动器的系统和方法包括用于滤除共模和差模电流的输入滤波器。 三相电感器具有三个绕组，三相电感器的每个绕组具有将每个绕组分成一对电感器部分的中心抽头; 以及三相输入电容器组，其以一个配置形式连接到一端的三个中心抽头，另一端连接到公共点。 三相输入电容器组为预定基频以上的频率提供短路，用于通过三相电容器组将这些频率分流，同时将预定基频通过输入AC电源。
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公开(公告)号：US20070063668A1
公开(公告)日：2007-03-22
申请号：US11422668
申请日：2006-06-07
申请人： Harold Schnetzka , Ivan Jadric
发明人： Harold Schnetzka , Ivan Jadric
IPC分类号： H02P3/18
摘要： A method of providing ride-through capability in a chiller/refrigeration system employs a variable speed drive with an active converter stage, a DC link stage and an inverter stage for providing variable frequency and voltage to power at least one motor. An induction motor is coupled to the output of the inverter stage for driving a compressor in the chiller/refrigeration system. The ride-through method comprises operating the active converter to regulate the DC link voltage of the DC link stage to a predetermined voltage level until the current through the active converter equals a predetermined current limit, then transferring regulation of the DC link to the inverter upon reaching the current limit of the converter. The compressor is unloaded, and the power flow through the inverter is reversed to maintain the voltage level of the DC link stage. Pre-rotation vanes, slide valve, or check valve are used to unload the compressor.
摘要翻译： 在冷冻机/制冷系统中提供穿越能力的方法采用具有有源转换器级，DC链路级和逆变器级的变速驱动器，用于提供可变频率和电压以对至少一个电动机供电。 感应电动机与变频器级的输出端连接，用于驱动冷冻机/制冷系统中的压缩机。 该直通方法包括操作有源转换器以将DC链路级的DC链路电压调节到预定的电压电平，直到通过有源转换器的电流等于预定的电流限制，然后将DC链路的调节转移到逆变器上 达到转换器的电流极限。 压缩机卸载，逆变器的功率流反转，以保持直流母线的电压电平。 预旋转叶片，滑阀或止回阀用于卸载压缩机。
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公开(公告)号：US20060250107A1
公开(公告)日：2006-11-09
申请号：US11123685
申请日：2005-05-06
申请人： Ivan Jadric , Harold Schnetzka
发明人： Ivan Jadric , Harold Schnetzka
IPC分类号： H02P7/36
CPC分类号： H02P27/08 , B60H1/00428 , H02P2201/09 , Y02T10/88
摘要： A variable speed drive with a boost converter is provided for a chiller system driven by an induction motor. The boost converter can be a diode or thyristor rectifier followed by a boost DC/DC converter or a three-phase pulse width modulated boost converter. The boost converter provides a boosted voltage to the DC link, which results in a boosted voltage being applied to the induction motor by the inverter of the variable speed drive.
摘要翻译： 具有升压转换器的变速驱动器用于由感应电动机驱动的冷却器系统。 升压转换器可以是二极管或晶闸管整流器，后面是升压型DC / DC转换器或三相脉宽调制升压转换器。 升压转换器为直流链路提供升压电压，这导致升压电压由变频驱动器的逆变器施加到感应电动机。
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公开(公告)号：US09024559B2
公开(公告)日：2015-05-05
申请号：US13640322
申请日：2010-05-04
CPC分类号： H03K17/168 , H02P27/06 , H03K17/107 , H03K17/127 , H03K17/163
摘要： A converter module for a variable speed drive having a semiconductor device for precharge is described. The precharge circuit includes switching modules, one switching module with a first semiconductor switch connected in parallel or series with a second semiconductor switch. The second semiconductor switch is switched on and off during the precharge operation in order to limit the inrush current into the DC Link. After the precharge operation, the second semiconductor switch is turned on all the time and acts like a diode. The second semiconductor device may have a lower maximum current rating than the main semi-conductor devices. The lower current rated semiconductor device experience the same short circuit current as the higher current rated semiconductor device. The lower current rated semiconductor device can be supplied with a larger gate to emitter voltage than the higher current rated semiconductor device to equalize current between semiconductor devices.
摘要翻译： 描述了一种用于具有用于预充电的半导体器件的变速驱动器的转换器模块。 预充电电路包括开关模块，一个开关模块，其具有与第二半导体开关并联或串联连接的第一半导体开关。 在预充电操作期间，第二半导体开关被接通和关断，以限制进入DC Link的浪涌电流。 在预充电操作之后，第二半导体开关始终导通，并且起二极管的作用。 第二半导体器件可以具有比主半导体器件更低的最大电流额定值。 较低电流额定值的半导体器件具有与较高电流额定值的半导体器件相同的短路电流。 较低额定电流的半导体器件可以提供比较高电流额定半导体器件更大的栅极至发射极电压，以均衡半导体器件之间的电流。
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公开(公告)号：US08516850B2
公开(公告)日：2013-08-27
申请号：US12501628
申请日：2009-07-13
申请人： Ivan Jadric , Steven J Estes , John C Hansen , Koman B Nambiar , Andrew M Welch , Steven T Sommer , Gregory K Beaverson
发明人： Ivan Jadric , Steven J Estes , John C Hansen , Koman B Nambiar , Andrew M Welch , Steven T Sommer , Gregory K Beaverson
摘要： A cooling system for a motor powering a compressor in a vapor compression system includes a housing and a cavity within the housing. A first fluid circuit has a first connection to receive a refrigerant into the cavity, and a second connection to deliver refrigerant from the cavity to a heat exchanger for a heat transfer relationship with a heat-generating component.
摘要翻译： 用于为蒸汽压缩系统中的压缩机供电的电动机的冷却系统包括壳体和壳体内的空腔。 第一流体回路具有第一连接以将制冷剂接收到空腔中，以及第二连接件，用于将制冷剂从腔体输送到热交换器以与发热部件的传热关系。
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公开(公告)号：US08014110B2
公开(公告)日：2011-09-06
申请号：US11932054
申请日：2007-10-31
申请人： Harold R. Schnetzka , Ivan Jadric
发明人： Harold R. Schnetzka , Ivan Jadric
CPC分类号： H02M1/12 , F25B49/025 , F25B2600/021 , H02M2001/123 , H02P27/08 , H02P29/50 , H02P2201/03 , H03L7/093 , H03L7/095 , H05K7/20936 , Y02B30/741
摘要： Systems and methods for operating a variable speed drive to receive an input AC power at a fixed AC input voltage and frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter stage to convert the input AC voltage to a boosted DC voltage, a DC link connected to the converter stage to filter and store the boosted DC voltage from the converter stage; and an inverter stage to convert the boosted DC voltage into AC power with variable voltage and the variable frequency. An integral bypass contactor is connected in parallel with the VSD between the AC power source and the AC output power. The integral bypass contactor is arranged to bypass the VSD when the VSD output frequency and voltage are approximately equal with the AC input voltage and frequency.
摘要翻译： 用于操作变速驱动器以固定的AC输入电压和频率接收输入AC电力的系统和方法，并以可变电压和可变频率提供输出AC电力。 变速驱动器包括转换器级，用于将输入交流电压转换为升压直流电压;连接到转换器级的直流链路，用于对来自转换器级的升压直流电压进行滤波和存储; 以及将升压的直流电压转换为具有可变电压和可变频率的交流电的逆变器级。 一体式旁路接触器与交流电源和交流输出电源之间的VSD并联连接。 当VSD输出频率和电压与交流输入电压和频率近似相等时，集成旁路接触器被布置为绕过VSD。
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公开(公告)号：US20090109713A1
公开(公告)日：2009-04-30
申请号：US11978939
申请日：2007-10-30
申请人： Harold R. Schnetzka , Ivan Jadric , Shreesha Adiga Manoor , Steve Hoover , Kathleen S. Rogers , Mustafa Kemal Yanik
发明人： Harold R. Schnetzka , Ivan Jadric , Shreesha Adiga Manoor , Steve Hoover , Kathleen S. Rogers , Mustafa Kemal Yanik
CPC分类号： H02M5/4585 , H02M7/003
摘要： Systems and methods for improved Variable Speed Drives are provided. One embodiment relates to apparatus for common mode and differential mode filtering for motor or compressor bearing protection when operating with Variable Speed Drives, including conducted EMI/RFI input power mains mitigation. Another embodiment relates to a method to extend the synchronous operation of an Active Converter to the AC mains voltage during complete line dropout. Another embodiment relates to an Active Converter-based Variable Speed Drive system with Improved Full Speed Efficiency. Another embodiment relates to a liquid- or refrigerant-cooled inductor. The liquid- or refrigerant-cooled inductor may be used in any application where liquid or refrigerant cooling is available and a reduction in size and weight of a magnetic component is desired.
摘要翻译： 提供了改进变频器的系统和方法。 一个实施例涉及用于在使用变速驱动器（包括传导的EMI / RFI输入电源减轻）操作时用于电机或压缩机轴承保护的共模和差模过滤的装置。 另一个实施例涉及在完整的线路断开期间将有源转换器的同步操作扩展到AC电源电压的方法。 另一实施例涉及具有改进的全速效率的基于有源转换器的变速驱动系统。 另一个实施例涉及液体或制冷剂冷却的电感器。 液体或冷却剂冷却的电感器可以用于可用液体或制冷剂冷却的任何应用中，并且期望磁性部件的尺寸和重量的减小。
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公开(公告)号：US20080174393A1
公开(公告)日：2008-07-24
申请号：US11932479
申请日：2007-10-31
IPC分类号： H01F27/10
CPC分类号： H02M1/12 , F25B49/025 , F25B2600/021 , H02M2001/123 , H02P27/08 , H02P29/50 , H02P2201/03 , H03L7/093 , H03L7/095 , H05K7/20936 , Y02B30/741
摘要： A plastic liquid cooled variable speed drive or inductor provided. The cooler provides lightweight, space conservative, corrosive free cooling to the components as well as provides a mounting area for modules. A cooler can be mounted to the core of an inductor to absorb heat generated by the core losses.
摘要翻译： 提供塑料液冷式变速驱动器或电感器。 冷却器为组件提供轻便，空间保守，无腐蚀性的冷却，并为模块提供安装区域。 可以将冷却器安装到电感器的芯部以吸收由芯损耗产生的热量。
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