公开(公告)号：US20170117748A1

公开(公告)日：2017-04-27

申请号：US15333177

申请日：2016-10-24

申请人： Inertech IP LLC

发明人： Subrata K. Mondal

IPC分类号： H02J9/06 ,  H02M7/537 ,  H02M1/12 ,  H02M3/158

CPC分类号： H02M1/12 ,  H02J3/01 ,  H02J3/1857 ,  H02J3/28 ,  H02J3/32 ,  H02M3/158 ,  H02M7/487 ,  Y02E40/26 ,  Y02E40/40

摘要： Systems and methods of the present disclosure involve passive, hybrid, and active filtering configurations to mitigate current harmonics for various electrical loads. One hybrid filtering configuration is medium voltage (MV) active filtering using a DC-DC converter and a multi-level inverter, and low voltage (LV) passive filtering. Another hybrid filtering configuration is MV passive filtering and LV active filtering using a two-level inverter. An active filtering configuration includes both MV and LV active filtering. The present disclosure also features power distribution unit (PDU) transformers electrically coupled to respective power supplies on the LV side of an electrical system. Each PDU transformer includes primary coils in a delta configuration and secondary coils in a wye configuration. The secondary coils are in series with respective leakage inductance coils. The secondary coils and the leakage inductance coils are integrated together into a single unit or module.

公开(公告)号：US20150211769A1

公开(公告)日：2015-07-30

申请号：US14682772

申请日：2015-04-09

申请人： Inertech IP LLC

发明人： Gerald McDonnell ,  Earl Keisling

IPC分类号： F25B5/04 ,  F25B7/00 ,  F25B49/02 ,  F25B6/02

CPC分类号： F25B5/04 ,  F25B6/02 ,  F25B7/00 ,  F25B23/006 ,  F25B25/005 ,  F25B41/00 ,  F25B49/02

摘要： The cooling systems and methods of the present disclosure relate to a plural in-series pumped liquid refrigerant trim evaporator cycle that may be incorporated into an existing cooling system to increase the efficiency of the existing cooling system. The cooling systems of the present disclosure include a first evaporator coil in thermal communication with an air intake flow to a heat load, such as a heat load being cooled by the existing cooling system, and a first liquid refrigerant distribution unit in thermal communication with the first evaporator coil. The cooling systems further includes a second evaporator coil disposed in series with the first evaporator coil in the air intake flow and in thermal communication with the air intake flow, and a second liquid refrigerant distribution unit in thermal communication with the second evaporator coil. A trim compression cycle of the second liquid refrigerant distribution unit is configured to incrementally further cool the air intake flow through the second evaporator coil when the temperature of the free-cooled first fluid flowing out of the main compressor of the second liquid refrigerant distribution unit exceeds a predetermined threshold temperature.

摘要翻译： 本公开的冷却系统和方法涉及可并入现有冷却系统中的多个串联泵送的液体制冷剂修整蒸发器循环，以提高现有冷却系统的效率。 本公开的冷却系统包括与进气流与热负荷（例如由现有冷却系统冷却的热负荷）热连通的第一蒸发器盘管，以及与所述冷却系统热连通的第一液体制冷剂分配单元 第一蒸发器盘管。 冷却系统还包括与进气流中的第一蒸发器盘管串联布置并与进气流热连通的第二蒸发器盘管和与第二蒸发器盘管热连通的第二液体制冷剂分配单元。 第二液体制冷剂分配单元的调整压缩循环构成为，在从第二液体制冷剂分配单元的主压缩机流出的自由冷却的第一流体的温度超过第一蒸发器盘管时，进一步冷却通过第二蒸发器盘管的进气流量 预定的阈值温度。

公开(公告)号：USD709465S1

公开(公告)日：2014-07-22

申请号：US29455941

申请日：2013-05-28

申请人： Inertech IP LLC

设计人： Earl Keisling ,  John Costakis ,  Gerald McDonnell

公开(公告)号：US20240333173A1

公开(公告)日：2024-10-03

申请号：US18623734

申请日：2024-04-01

申请人： Inertech IP LLC

发明人： Subrata K Mondal

IPC分类号： H02M7/487 ,  H02J9/06 ,  H02M1/084 ,  H02M3/04 ,  H02M7/483 ,  H02M7/49 ,  H02M7/5387

CPC分类号： H02M7/487 ,  H02J9/061 ,  H02M3/04 ,  H02M1/0845 ,  H02M7/4835 ,  H02M7/49 ,  H02M7/53873 ,  H02M7/53875 ,  H02M7/53876

摘要： Control systems for a multi-level diode-clamped inverter and corresponding methods include a processor and a digital logic circuit forming a hybrid controller. The processor identifies sector and region locations based on a sampled reference voltage vector V* and angle θe*. The processor then selects predefined switching sequences and pre-calculated turn-on time values based on the identified sector and region locations. The digital logic circuit generates PWM switching signals for driving power transistors of a multi-level diode-clamped inverter based on the turn-on time values and the selected switching sequences. The control system takes care of the existing capacitor voltage balancing issues of multi-level diode-clamped inverters while supplying both active and reactive power to an IT load. Using the control system, one can generate a symmetrical PWM signal that fully covers the linear under-modulation region.

公开(公告)号：US20240268082A1

公开(公告)日：2024-08-08

申请号：US18407424

申请日：2024-01-08

申请人： Inertech IP LLC

发明人： Earl Keisling ,  John Costakis ,  Gerald McDonnell

IPC分类号： H05K7/20 ,  F21V33/00 ,  F21W131/40

CPC分类号： H05K7/20745 ,  F21V33/0092 ,  F21W2131/40

摘要： An air flow distribution system for cooling server racks includes at least one server rack partially defining a hot aisle and a cold aisle, a first air foil disposed above the server rack, and a second air foil disposed above the first air foil. The first air foil and the second air foil are configured to receive air from the hot aisle, and to form turbulent wake patterns in the cold aisle partially defined by the server rack. The air flow distribution system may include a convex ceiling member above the second air foil. A corresponding method includes causing air to be directed between a first air foil disposed above a server rack and a second air foil disposed above the first air foil to form turbulent wake patterns in the cold aisle. An electrical enclosure assembly includes a receptacle and a cover member configured as an air foil.

公开(公告)号：US11923725B2

公开(公告)日：2024-03-05

申请号：US18078401

申请日：2022-12-09

申请人： INERTECH IP LLC

发明人： Subrata K. Mondal

IPC分类号： H02J9/00 ,  H02J9/06 ,  H02M3/156

CPC分类号： H02J9/062 ,  H02M3/156

摘要： Systems and methods for supplying power at a medium voltage from an uninterruptible power supply (UPS) to a load without using a transformer are disclosed. The UPS includes an energy storage device, a single stage DC-DC converter or a two-stage DC-DC converter, and a multi-level inverter, each of which are electrically coupled to a common negative bus. The DC-DC converter may include two stages in a unidirectional or bidirectional configuration. One stage of the DC-DC converter uses a flying capacitor topology. The voltages across the capacitors of the flying capacitor topology are balanced and switching losses are minimized by fixed duty cycle operation. The DC-DC converter generates a high DC voltage from a low or high voltage energy storage device such as batteries and/or ultra-capacitors. The multi-level, neutral point, diode-clamped inverter converts the high DC voltage into a medium AC voltage using a space vector pulse width modulation (SVPWM) technique. The UPS may also include a small filter to remove harmonics in the AC voltage output from the multi-level inverter.

公开(公告)号：US11871544B2

公开(公告)日：2024-01-09

申请号：US18086577

申请日：2022-12-21

申请人： Inertech IP LLC

发明人： Earl Keisling ,  John Costakis ,  Gerald McDonnell

IPC分类号： H05K7/20 ,  F21V33/00 ,  F21W131/40

CPC分类号： H05K7/20745 ,  F21V33/0092 ,  F21W2131/40

摘要： An air flow distribution system for cooling server racks includes at least one server rack partially defining a hot aisle and a cold aisle, a first air foil disposed above the server rack, and a second air foil disposed above the first air foil. The first air foil and the second air foil are configured to receive air from the hot aisle, and to form turbulent wake patterns in the cold aisle partially defined by the server rack. The air flow distribution system may include a convex ceiling member above the second air foil. A corresponding method includes causing air to be directed between a first air foil disposed above a server rack and a second air foil disposed above the first air foil to form turbulent wake patterns in the cold aisle. An electrical enclosure assembly includes a receptacle and a cover member configured as an air foil.

公开(公告)号：US11867426B2

公开(公告)日：2024-01-09

申请号：US17887192

申请日：2022-08-12

申请人： Inertech IP LLC

发明人： John Costakis ,  Ming Zhang ,  Earl Keisling ,  Ken Nguyen

IPC分类号： F24F5/00 ,  F24F11/83 ,  F25B25/00 ,  F25B23/00 ,  F24F11/84 ,  F24F11/85 ,  F24F110/12 ,  F24F140/50 ,  F24F11/46 ,  F24F13/22 ,  F28C1/00

CPC分类号： F24F5/0007 ,  F24F5/001 ,  F24F5/0003 ,  F24F5/0035 ,  F24F11/83 ,  F24F11/84 ,  F24F11/85 ,  F25B23/006 ,  F25B25/00 ,  F25B25/005 ,  F24F11/46 ,  F24F2013/225 ,  F24F2110/12 ,  F24F2140/50 ,  F25B2339/041 ,  F25B2339/047 ,  F25B2700/197 ,  F25B2700/21163 ,  F28C2001/006 ,  Y02B30/54

摘要： The cooling systems and methods of the present disclosure involve modular fluid coolers and chillers configured for optimal power and water use based on environmental conditions and client requirements. The fluid coolers include wet media, a first fluid circuit for distributing fluid across wet media, an air to fluid heat exchanger, and an air to refrigerant heat exchanger. The chillers, which are fluidly coupled to the fluid coolers via pipe cages, include a second fluid circuit in fluid communication with the air to fluid heat exchanger and a refrigerant circuit in thermal communication with the second fluid circuit and in fluid communication with the air to refrigerant heat exchanger. Pipe cages are coupled together to allow for expansion of the cooling system when additional cooling capacity is needed. The fluid coolers and chillers are configured to selectively operate in wet or dry free cooling mode, partial free cooling mode, or mechanical cooling mode.

公开(公告)号：US20230363106A1

公开(公告)日：2023-11-09

申请号：US18118357

申请日：2023-03-07

申请人： INERTECH IP LLC

发明人： Earl Keisling ,  John Costakis ,  Gerald McDonnell ,  Michael Welch

IPC分类号： H05K7/20 ,  H05K5/02

CPC分类号： H05K7/20218 ,  H05K5/02 ,  H05K7/20736 ,  H05K7/20781 ,  H05K7/20145 ,  H05K7/20609 ,  H05K7/20745 ,  H05K7/2079

摘要： A cooling assembly for cooling server racks includes a server rack enclosure sub-assembly that includes at least one panel member defining a volume for receiving one or more server racks having a front portion and a rear portion, at least one of the panel members is a rear panel member; at least one frame member defines an opening for receiving the rear portion of the server racks to form a hot space between the rear panel member and the combination of the frame member and the rear portion of the server racks; a cooling sub-assembly disposed in thermal communication with the hot space to cool at least one server supported in the server rack and including a chassis receiving at least one heat exchange member for exchanging heat between a refrigerant fluid flowing through the heat exchange member and fluid flowing through the hot space heated by the server.

公开(公告)号：US11602074B2

公开(公告)日：2023-03-07

申请号：US16653509

申请日：2019-10-15

申请人： Inertech IP LLC

发明人： Earl Keisling ,  John Costakis ,  Gerald McDonnell ,  Michael Welch

IPC分类号： H05K7/20 ,  H05K5/02

摘要： A cooling assembly for cooling server racks includes a server rack enclosure sub-assembly that includes at least one panel member defining a volume for receiving one or more server racks having a front portion and a rear portion, at least one of the panel members is a rear panel member; at least one frame member defines an opening for receiving the rear portion of the server racks to form a hot space between the rear panel member and the combination of the frame member and the rear portion of the server racks; a cooling sub-assembly disposed in thermal communication with the hot space to cool at least one server supported in the server rack and including a chassis receiving at least one heat exchange member for exchanging heat between a refrigerant fluid flowing through the heat exchange member and fluid flowing through the hot space heated by the server.