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公开(公告)号：US20250158515A1
公开(公告)日：2025-05-15
申请号：US18825637
申请日：2024-09-05
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean , Stefanos Skoulaxinos
Abstract: A LLC voltage converter for converting a DC input voltage to a DC output voltage. The LLC voltage converter includes: a transformer having an input winding and an output winding, a controller and a current sensor. The current sensor measures a primary current through the input winding of the transformer and provides a measurement of the primary current to the controller. The controller determines when a secondary current, through the output winding of the transformer, is substantially zero based on the measurement of the primary current and a maximum value of the primary current.
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2.发明授权公开(公告)号：US11258367B2
公开(公告)日：2022-02-22
申请号：US16713372
申请日：2019-12-13
Applicant: Hamilton Sundstrand Corporation
Inventor： Jaspreet Kaur Mann , Andrew McLean
Abstract: A power converter comprises a buck converter portion, an energy storage portion, and a controller. A first inductor is connected between the cathode of a first diode at an input node, and a capacitor at an output node. The input node is connected to an input voltage via a first switch. A second inductor in the energy storage portion is magnetically coupled to the first inductor and is connected to a second diode. The cathode of the second diode is connected to a first terminal of the energy storage element, and a second terminal of the energy storage element is connected to a second terminal of the second inductor. The first terminal of the energy storage element is connected to the input node via a second switch. When the input voltage is not less than a threshold, the second switch is opened.
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公开(公告)号：US12301125B2
公开(公告)日：2025-05-13
申请号：US18217414
申请日：2023-06-30
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean
Abstract: A power converter topology, comprising: a cascade connection of a first converter stage and a second converter stage; wherein the first converter stage comprises a current mode controlled pulse width modulation (PWM) converter having one or more pairs of switches forming a first switching bridge and an inductor connected to the output of the first switching bridge, the switching bridge generating a voltage Vlink; and wherein the second converter stage is a resonant converter having a switching stage having one or more pairs of switches forming a second switching bridge across the voltage Vlink generated by the first converter stage and a resonant tank connected to the output of the second switching bridge, to generate a resonator output voltage; the topology further comprising a transformer to transform the resonator output voltage to a transformed output voltage and a rectifier to rectify the transformed output voltage to an output voltage Vout, and wherein the duty cycle of the first switching bridge is varied according to a voltage derived from the value of the output voltage Vout, and wherein the duty cycle of the second switching bridge is fixed at 50:50.
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公开(公告)号：US20240377467A1
公开(公告)日：2024-11-14
申请号：US18658247
申请日：2024-05-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean
IPC: G01R31/392 , G01R31/389 , H02J7/00 , H02J9/06
Abstract: A power supply circuit includes a series connection, the series connection being configured to transmit energy from a main energy source to an output and an energy storage device connected in parallel to the series connection, the energy storage device being chargeable via the main energy source during a charging mode. The energy storage device is configured to supply energy to the output during a failure of the main energy source; and a controller configured to monitor and/or test the energy storage device for degradation when the energy storage device is not supplying energy to the output and when the energy storage device is not being charged.
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公开(公告)号：US20240007008A1
公开(公告)日：2024-01-04
申请号：US18217414
申请日：2023-06-30
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean
CPC classification number: H02M3/33592 , H02M1/0058 , H02M3/01 , B60L2210/14 , B60L2200/10 , B60L2210/12 , B60L53/20
Abstract: A power converter topology, comprising: a cascade connection of a first converter stage and a second converter stage; wherein the first converter stage comprises a current mode controlled pulse width modulation (PWM) converter having one or more pairs of switches forming a first switching bridge and an inductor connected to the output of the first switching bridge, the switching bridge generating a voltage Vlink; and wherein the second converter stage is a resonant converter having a switching stage having one or more pairs of switches forming a second switching bridge across the voltage Vlink generated by the first converter stage and a resonant tank connected to the output of the second switching bridge, to generate a resonator output voltage; the topology further comprising a transformer to transform the resonator output voltage to a transformed output voltage and a rectifier to rectify the transformed output voltage to an output voltage Vout, and wherein the duty cycle of the first switching bridge is varied according to a voltage derived from the value of the output voltage Vout, and wherein the duty cycle of the second switching bridge is fixed at 50:50.
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Patent Agency Ranking
公开(公告)号：US20230396462A1
公开(公告)日：2023-12-07
申请号：US18204667
申请日：2023-06-01
Applicant: Hamilton Sundstrand Corporation
Inventor： Kashav Sehra , Andrew McLean
IPC: H04L12/40
CPC classification number: H04L12/40006 , H04L2012/40215
Abstract: A controller area network (CAN) device arranged to communicate on a CAN bus, the device comprising a processor, a CAN controller, a CAN transceiver and a termination resistor and switch assembly, the termination resistor and switch assembly comprising a switch and a first termination resistor and a second termination resistor for connection, respectively, between the device and a first line and a second line of the CAN bus, the switch comprising a dual opto-coupled solid-state relay, between the first termination resistor and the second termination resistor, and a split termination capacitor connected at a mid-point between the first termination resistor and the second termination resistor and ground, whereby the switch is controlled by a termination enable signal from the device processor to switch in or switch out the first and second termination resistors according to a position of the device on the CAN bus.
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公开(公告)号：US20210044239A1
公开(公告)日：2021-02-11
申请号：US16693431
申请日：2019-11-25
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean , Parminder Singh Sangha
Abstract: A system for controlling an electrical current flowing between a power source and a multi-phase electromagnetic machine includes a first lane, A, comprising a first plurality of phases capable of providing said current from said power source to said machine, and further comprises a second lane, B, comprising a second plurality of phases capable of providing said current to said machine. The system is configured to provide said current via said first lane, A, while no current is being provided via said second lane, B. Each of said first plurality of phases comprises at least one inverter switch positioned between said power source and said machine. The system further includes means for detecting a fault in one of the first plurality of inverter switches of lane A, and further comprises a first phase isolation means provided on said first lane, A.
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公开(公告)号：US20240313688A1
公开(公告)日：2024-09-19
申请号：US18600450
申请日：2024-03-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean , Parminder Sangha
IPC: H02P29/024
CPC classification number: H02P29/024 , H02P2207/055
Abstract: A controller for a permanent magnet machine, the controller configured to: monitor a characteristic value of power transfer to the permanent magnet machine; compare the monitored characteristic value to a characteristic threshold; and indicate a short circuit error in response to the monitored characteristic value meeting the characteristic threshold.
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公开(公告)号：US20250132665A1
公开(公告)日：2025-04-24
申请号：US18813919
申请日：2024-08-23
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean
Abstract: A LLC voltage converter for converting a DC input voltage to a DC output voltage includes a transformer, a controller and a current sensor. The current sensor provides a measurement of the current through a first winding of a transformer to the controller. The controller determines a parameter relating to an output current of the LLC voltage converter using the current measurement. The controller also receives a parameter relating to an output current of at least one other LLC voltage converter, configured in parallel with the LLC voltage converter. The controller is arranged to control the LLC voltage converter based on both the parameter relating to the output current of the LLC voltage converter and the parameter relating to the output current of the other LLC voltage converter.
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公开(公告)号：US20230395335A1
公开(公告)日：2023-12-07
申请号：US18204847
申请日：2023-06-01
Applicant: Hamilton Sundstrand Corporation
Inventor： Andrew McLean
Abstract: A snubber circuit for a solid state circuit breaker (SSCB), the snubber circuit comprising a series connected capacitor and transient voltage suppressor, TVS, connected across switches of the SSCB, and a bidirectional solid state circuit breaker comprising: a main SSCB circuit configured to be connected between a power supply and a load, and comprising first and second semiconductor switches connected in series, and a snubber circuit as described above having a first end connected to a first end of the first semiconductor switch and a second end connected to a second end of the second semiconductor switch.
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