公开(公告)号：EP3694096A1

公开(公告)日：2020-08-12

申请号：EP19215589.3

申请日：2019-12-12

申请人： Hamilton Sundstrand Corporation

发明人： THOMPSON, Ernest ,  WHITE, Adam Michael ,  SCHMITT, Dwight D.

IPC分类号： H02M7/487 ,  H02M1/32

摘要： A converter implementing a dual-reference three-level pulse width modulation (PWM) technique for constraining a midpoint duty cycle is provided. The converter includes a phase leg (240) that includes upper, mid-upper, mid-lower, and lower switches (242, 244, 246, 248). The upper, mid-upper, mid-lower, and lower switches are connected in series between direct current (DC) positive (128) and negative (132) leads, with an alternating current (AC) output lead connected at a junction of the mid-upper and mid-lower switches. The phase leg includes a first clamping diode (250) connected to the junction of the switch and mid-upper switches and connected to a DC midpoint lead and a second clamping diode (252) connected between the DC midpoint lead and connected to the junction of the mid-lower and lower switches. The converter is electrically coupled to and operatively associated with a controller to receive control signals to drive the converter to constrain the midpoint duty cycle between the DC midpoint and AC output leads.

公开(公告)号：EP3700041A1

公开(公告)日：2020-08-26

申请号：EP19215800.4

申请日：2019-12-12

申请人： Hamilton Sundstrand Corporation

发明人： THOMPSON, Ernest ,  WHITE, Adam Michael

IPC分类号： H02J3/18 ,  B64D41/00

摘要： Embodiments of the invention provide for a system, method, and controller for operating a harmonic regulator with loop delay compensation. Some embodiments include receiving, at a controller, voltage feedback from a power system, and applying a harmonic regulator to each distortion frequency to be compensated. Embodiments also include applying a predetermined delay to an output of the harmonic regulator, scaling the delayed output and adding it to a power source voltage reference waveform, and providing condition power to a load, using the conditioned power source voltage reference waveform.

公开(公告)号：EP3346490A1

公开(公告)日：2018-07-11

申请号：EP18150748.4

申请日：2018-01-09

申请人： Hamilton Sundstrand Corporation

发明人： HUSS, John ,  KASNER, Alan ,  METZLER, Mark W. ,  THOMPSON, Ernest ,  PAL, Debabrata ,  SHEPARD, Charles Patrick

IPC分类号： H01L23/373 ,  H01L23/42 ,  B82Y30/00 ,  C08J5/00 ,  C08K7/06 ,  C08K7/24

CPC分类号： H05K7/2039 ,  B82Y30/00 ,  C08K7/06 ,  C08K7/24 ,  H01F27/08 ,  H01G2/08 ,  H01G2/10 ,  H01L21/565 ,  H01L23/295 ,  H01L23/3675 ,  H01L23/3731 ,  H01L23/3737 ,  H01L23/42 ,  H05K5/064

摘要： Potted electronic assemblies are disclosed along with methods of making and cooling them. The electronic assemblies include a conductive heat transfer medium disposed between and in contact with an electronic component (20) and a heat sink. The conductive heat transfer medium has a hardened fluid polymer material that includes boron nitride nanotubes dispersed therein.

公开(公告)号：EP3694097A1

公开(公告)日：2020-08-12

申请号：EP19216283.2

申请日：2019-12-13

申请人： Hamilton Sundstrand Corporation

发明人： THOMPSON, Ernest ,  WHITE, Adam Michael

IPC分类号： H02M7/487 ,  H02M1/00 ,  H02M1/12 ,  H02M5/458

摘要： A method of controlling an inverter includes generating a neutral-phase reference waveform, generating a neutral-phase midpoint compensation waveform using the neutral-phase reference waveform, and generating a neutral-phase compensated duty cycle waveform using the neutral-phase midpoint compensation waveform. Neutral-phase switch command signals are generated for switches of a neutral-phase of the inverter using the neutral-phase compensated duty cycle waveform. Inverters and computer program products are also described.

公开(公告)号：EP3648131A1

公开(公告)日：2020-05-06

申请号：EP19206985.4

申请日：2019-11-04

申请人： Hamilton Sundstrand Corporation

发明人： THOMPSON, Ernest ,  SCHMITT, Dwight D. ,  GOOD, Jef William

IPC分类号： H01F38/28 ,  G01R31/50

摘要： A dual feeder circuit system (100) for supplying electrical power can include one or more feeder groups (101), each feeder having a first wire (103) and a second wire (105) connected between a source terminal (109) and a load terminal (111) to carry the same electrical signal on both wires. The system can include one or more current transformers (107) disposed on one or more of the feeder groups such that the current transformer is disposed around both the first wire and the second wire. The first wire can be passed directly through a first side of the current transformer to allow current to travel through the current transformer in a first direction, and the second wire can include a loop (117) and be passed through a second side of the current transformer to allow current to travel through the current transformer in an second direction opposite the first direction.