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公开(公告)号：US12267029B2
公开(公告)日：2025-04-01
申请号：US18098121
申请日：2023-01-18
Applicant: DELTA ELECTRONICS, INC.
Inventor： Yen-Yang Chen , Jen-Chih Tseng , Lei-Chung Hsing
Abstract: A method of obtaining a parameter of a synchronous motor is disclosed and includes: setting an operating current of the motor; providing a positive fixed voltage to the motor and monitoring a feedback current from the motor; recording a triggering time for the feedback current to reach the operating current; providing a negative fixed voltage to the motor for the triggering time; obtaining a square-wave voltage with a fixed frequency based on the positive fixed voltage and the negative fixed voltage being provided; providing the square-wave voltage with the fixed frequency to one axis of the motor; transforming three-phase current from the motor into an axial current; computing an inductance value of this axis based on the fixed frequency, the square-wave voltage and the axial current; and, creating an inductance-current parameter table based on a plurality of the inductance values and the axial currents correspondingly.
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公开(公告)号：US11777399B2
公开(公告)日：2023-10-03
申请号：US17468919
申请日：2021-09-08
Applicant: DELTA ELECTRONICS, INC.
Inventor： Yi-Wei Lin , Kai-Wei Hu , Lei-Chung Hsing
CPC classification number: H02M1/08 , H02M1/0029 , H03K17/168
Abstract: A power drive circuit includes a power conversion module, a plurality of gate drivers, a waveform processing unit, a control unit, a weighting unit, and a comparator. Each gate driver includes a drive resistance setting value. The waveform processing unit outputs a current absolute value waveform of an AC power. The weighting unit generates a trigger voltage. When the comparator determines that the current absolute value waveform is greater than the trigger voltage, the comparator outputs a slew rate control signal to each of the gate drivers. When the gate driver receives the slew rate control signal, each of the gate drivers decreases the drive resistance setting value of the gate driver.
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公开(公告)号：US11728675B2
公开(公告)日：2023-08-15
申请号：US17720462
申请日：2022-04-14
Applicant: DELTA ELECTRONICS, INC.
Inventor： Kai-Wei Hu , Yen-Hsun Chen , Chia-Tse Lee , Lei-Chung Hsing
CPC classification number: H02J9/062 , H02J7/0013 , H02J7/02
Abstract: A power supply apparatus is coupled to an AC power source, a critical load, and a general load. The power supply apparatus includes a UPS, a generator system, a power conversion system, and a controller. The power conversion system includes a first power conversion path and a second power conversion path. The first power conversion path is connected to the critical load and an output side, and the second power conversion path is connected to the general load and an input side. The first power conversion path and the second power conversion path are jointly connected to a DC bus. When the controller determines that the AC power source is abnormal, the controller controls disconnecting the AC power source, and activates the UPS to supply power to the critical load so as to enable the first power conversion path and disable the second power conversion path.
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公开(公告)号：US11605489B2
公开(公告)日：2023-03-14
申请号：US17020388
申请日：2020-09-14
Applicant: Delta Electronics, Inc.
Inventor： Tsung-Nan Kuo , Lei-Chung Hsing
IPC: H01F27/28 , H01F27/245 , H01F3/14 , H01F30/12 , H02K3/28 , H01F27/30 , H01F3/10 , H01F27/38 , H01F37/00 , H01F17/00
Abstract: An integrated magnetic element is provided, including a first magnetic-core frame, three second magnetic-core frames, and three coil windings. The first magnetic-core frame has a first side pillar and a second side pillar opposite to the first side pillar. The three second magnetic-core frames are arranged on the side corresponding to the first side pillar of the first magnetic-core frame, and are arranged in parallel with the axis of the first side pillar of the first magnetic-core frame. Each of the second magnetic-core frames has a first side pillar adjacent to the first side pillar of the first magnetic-core frame, and a second side pillar opposite to the first side pillar of itself. The three coil windings connect to a three-phase grid, and wind around the first side pillar of the first magnetic-core frame and the corresponding first side pillar of the second magnetic-core frame respectively.
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公开(公告)号：US11539304B2
公开(公告)日：2022-12-27
申请号：US16991750
申请日：2020-08-12
Applicant: DELTA ELECTRONICS, INC.
Inventor： Kai-Wei Hu , Lei-Chung Hsing
Abstract: An indirect matrix converter includes a rectifier module, an inverter module, and a control unit. The rectifier module includes three parallel-connected T-type bridge arms, and each T-type bridge arm includes a bidirectional switch and a power bridge arm. The power bridge arm includes a first switch and a second switch connected to the first switch in series. One end of the bidirectional switch is coupled to a first AC power source, and the other end thereof is coupled to a common contact between the first switch and the second switch. The control unit outputs a plurality of control signals to control the rectifier module and the inverter module, so that the first AC power source is converted into a second AC power source, or the second AC power source is converted into the first AC power source.
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Patent Agency Ranking
公开(公告)号：US20220130586A1
公开(公告)日：2022-04-28
申请号：US17332121
申请日：2021-05-27
Applicant: Delta Electronics, Inc.
Inventor： Tsung-Nan Kuo , Lei-Chung Hsing
Abstract: A magnetic element includes a first magnetic core, a second magnetic core, a first winding and a second winding. The first magnetic core includes a first lateral core part, a second lateral core part and a first middle core part between the first lateral core part and the second lateral core part. The second magnetic core includes a third lateral core part, a fourth lateral core part and a second middle core part between the third lateral core part and the fourth lateral core part. The third lateral core part is located beside the first middle core part. The second middle core part is located beside the second lateral core part. The first winding is wound around the first middle core part and the third lateral core part. The second winding is wound around the second middle core part and the second lateral core part.
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公开(公告)号：US12270851B2
公开(公告)日：2025-04-08
申请号：US18151701
申请日：2023-01-09
Applicant: DELTA ELECTRONICS, INC.
Inventor： Kai-Wei Hu , Ping-Heng Wu , Lei-Chung Hsing
Abstract: A switch short-circuited diagnosis method includes steps of: determining an initial voltage interval of multiple voltage intervals according to voltage relationships between voltages of a first phase wire, a second phase wire, and a third phase wire; performing a switch short-circuited diagnosis of a first bidirectional switch module in the three consecutive voltage intervals from the initial voltage interval, and including steps of: turning on a first switch branch, a second switch branch, or a third switch branch of the first bidirectional switch module according to the voltage relationships between the voltages of the first, second and third phase wires, determining whether an overcurrent occurs to diagnose whether the first switch branch, the second switch branch, or the third switch branch of the first bidirectional switch module is in a short-circuited state, and performing the switch short-circuited diagnosis for the next voltage interval.
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公开(公告)号：US11289984B2
公开(公告)日：2022-03-29
申请号：US16225723
申请日：2018-12-19
Applicant: DELTA ELECTRONICS, INC.
Inventor： Lei-Chung Hsing , Chien-Chung Shih , Yu-Lin Su
Abstract: A bearingless motor is provided. The bearingless motor primarily includes a rotor module and a stator. The rotor module includes a plurality of rotor elements, and the stator includes a housing that forms a receiving space for receiving the rotor module, wherein the rotor module is rotatable relative to the stator.
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公开(公告)号：US20190229585A1
公开(公告)日：2019-07-25
申请号：US16160094
申请日：2018-10-15
Applicant: DELTA ELECTRONICS, INC.
Inventor： Lei-Chung Hsing , Hsien-Jen Chen
Abstract: A motor comprises a stator, heatsinks, a rotor and a heat-dissipation device. The stator has a hollow potion, a coil portion and a housing portion having a first surface, a second surface and sidewalls. The hollow portion is penetrated through the housing portion. The coil portion is disposed between the hollow portion and the housing portion. The heatsinks are respectively disposed on different sidewalls. The heat-dissipation device comprises a wind-guiding cover and a first fan. The wind-guiding cover comprises a wind-guiding main board and wind-guiding lateral boards. The wind-guiding main board is disposed adjacent to the second surface. The wind-guiding lateral boards are vertically extended from different lateral edges of the wind-guiding main board towards the same direction. Each wind-guiding lateral board is disposed corresponding to one of the heatsinks, and at least one of the wind-guiding lateral boards has a hole. The first fan is received by the hole.
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公开(公告)号：US12106882B2
公开(公告)日：2024-10-01
申请号：US17332121
申请日：2021-05-27
Applicant: Delta Electronics, Inc.
Inventor： Tsung-Nan Kuo , Lei-Chung Hsing
CPC classification number: H01F27/24 , H01F27/263 , H01F27/28 , H01F27/306 , H01F3/14
Abstract: A magnetic element includes a first magnetic core, a second magnetic core, a first winding and a second winding. The first magnetic core includes a first lateral core part, a second lateral core part and a first middle core part between the first lateral core part and the second lateral core part. The second magnetic core includes a third lateral core part, a fourth lateral core part and a second middle core part between the third lateral core part and the fourth lateral core part. The third lateral core part is located beside the first middle core part. The second middle core part is located beside the second lateral core part. The first winding is wound around the first middle core part and the third lateral core part. The second winding is wound around the second middle core part and the second lateral core part.
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