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公开(公告)号：US20250167671A1
公开(公告)日：2025-05-22
申请号：US18518080
申请日：2023-11-22
Applicant: Delta Electronics, Inc.
Inventor： Laszlo Huber , Peter Mantovanelli Barbosa
Abstract: In one embodiment, a method to reduce inductor current ripple in a three-phase, flying capacitor multi-level boost power factor correction rectifier circuit having three totem-pole legs, the method including: determining, for the three-phase, flying capacitor multi-level boost power factor correction rectifier circuit, for which of at least one of a segment in a line cycle or a voltage level of a phase-to-neutral voltage, and for which totem-pole leg selected from any one of the three totem-pole legs, to apply an additional phase shift at one or more instances of time in the line cycle; and applying the additional phase shift in such a way as to center align midpoint voltages of the three totem-pole legs.
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公开(公告)号：US20250159826A1
公开(公告)日：2025-05-15
申请号：US18947764
申请日：2024-11-14
Applicant: DELTA ELECTRONICS, INC.
Inventor： Guan-Chen YIN , Ching-Tang CHANG , Chi-Shou HO , Chen-Chiang SU
IPC: H05K5/02
Abstract: This disclosure is directed to a fool-proof structure having a shelf and a plug-in unit. The shelf is defined with a socket and an opening, and a stopping portion and an actuating portion are provided on the socket, and the actuating portion and the stopping portion are respectively communicated to the opening. The plug-in unit has an elastic arm. A stopping wall and an actuating slope of the elastic arm protrude from the plug-in unit. A first pitch is defined from the actuating portion to the stop portion, and a second pitch is defined from the actuating slope to the stopping wall. The first pitch may be configured to be greater than the second pitch, so that the actuating portion may push the actuating slope to deflect the elastic arm before the stopping wall arrives the stop part when the plug-in unit is inserted into the socket.
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公开(公告)号：US12301104B2
公开(公告)日：2025-05-13
申请号：US18371371
申请日：2023-09-21
Applicant: Delta Electronics, Inc.
Inventor： Yung-Sheng Yeh , Chih-Wei Liang
Abstract: An ORing FET control circuit and method are provided. The circuit includes an ORing FET, a comparator, first, second and third resistors, a first capacitor, a diode and a driving unit. The positive and negative input terminals of the comparator are electrically connected to the input and output voltages. The first resistor, the second resistor, the first capacitor, and the third resistor are electrically connected in series between a reference voltage and a ground terminal sequentially. The reference voltage is lower than a voltage at the positive input terminal. When the input voltage is lower than the output voltage, if a voltage across the ORing FET is larger than a threshold, the comparator outputs a driving signal at low level, and correspondingly the driving unit turns off the ORing FET. The threshold depends on resistances of the first and second resistors.
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公开(公告)号：US20250146507A1
公开(公告)日：2025-05-08
申请号：US18604801
申请日：2024-03-14
Applicant: Delta Electronics, Inc.
Inventor： Chih-Hsun CHANG , Hui-Lun CHIN , Ching-Hsien YEH , Chih-Wei CHAN
Abstract: A fan assembly is provided. The fan assembly includes a hub, a plurality of fan blades, and a fluid-guiding structure. The fan blades surround the hub. The fluid-guiding structure connects any two adjacent fan blades. Each of the fan blades includes a first end connected to the hub and a second end opposite to the first end. The distance between the fluid-guiding structure and the second end is less than the distance between the fluid-guiding structure and the first end. The fluid-guiding structure includes at least one streamlined surface.
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公开(公告)号：USD1073040S1
公开(公告)日：2025-04-29
申请号：US29806322
申请日：2021-09-02
Applicant: Delta Electronics, Inc.
Designer： Kuo-Tung Hsu , Shun-Chen Chang , Wen-Chun Hsu , Chao-Fu Yang , Shuo-Sheng Hsu
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Patent Agency Ranking
公开(公告)号：US12284784B2
公开(公告)日：2025-04-22
申请号：US17887669
申请日：2022-08-15
Applicant: Delta Electronics, Inc.
Inventor： Shih-Kang Lin , Li-Kuang Tan
Abstract: A hot-swappable pump unit (HSPU) and a coolant distribution unit (CDU) using the same are disclosed. The HSPU is connected to a loop inlet element, a loop outlet element and a fixed component of CDU along a matching direction. The HSPU includes a housing, a pump, a pump inlet element, a pump outlet element and a fastening component. The pump inlet element is in communication with the pump by passing through a first lateral wall of the housing. The pump outlet element is in communication with the pump by passing through the first lateral wall. The fastening component is arranged on the housing and configured to engage with the fixed component, to drive the hosing to move along the matching direction. Whereby, the pump inlet element and the loop outlet element are matched and connected, and the pump outlet element and the loop inlet element are matched and connected.
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公开(公告)号：US20250125719A1
公开(公告)日：2025-04-17
申请号：US18379857
申请日：2023-10-13
Applicant: Delta Electronics, Inc.
Inventor： Laszlo Huber , Peter Mantovanelli Barbosa
Abstract: In one embodiment, a multi-level, bridgeless boost power factor correction (PFC) device, comprising: a circuit comprising an inductor, and at least a first pair and a second pair of switches and a capacitor arranged in a flying capacitor, totem-pole configuration; and a control circuit configured to drive the at least first and second pairs of switches in such a way as to reduce distortion in a line current, wherein for the first and second pairs of switches, the control circuit is configured to: for a first half line cycle, drive a first switch of each pair during an entire interval of the first half-line cycle and a second switch of each pair for less than the entire interval; and for a second half-line cycle, drive the first switch of each pair for less than an entire interval of the second half-line cycle and the second switch of each pair during an entire interval of the second half-line cycle.
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公开(公告)号：US20250112474A1
公开(公告)日：2025-04-03
申请号：US18897963
申请日：2024-09-26
Applicant: DELTA ELECTRONICS, INC.
Inventor： Chung-Hsien WU , Wei-Pin WANG , Chung-Hwa WEI , Cheng-Kai LAI
Abstract: A battery swapping cabinet includes an AC-to-DC converter, a plurality of charging/discharging DC converters, a plurality of batteries, a first auxiliary DC converter, and a main board. The AC-to-DC converter converts an AC power supply into a DC bus voltage. The charging/discharging DC converters respectively receive the DC bus voltage and convert the DC bus voltage into a plurality of DC voltages. The plurality of batteries receives the plurality of DC voltages. The first auxiliary DC converter receives the DC bus voltage and converts the DC bus voltage into a first state voltage. The main board receives the first state voltage and a second state voltage. According to a state of the AC power supply, the main board provides the first state voltage or the second state voltage to the plurality of batteries to maintain the power required for the uninterrupted operation of the plurality of batteries.
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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：US20250099897A1
公开(公告)日：2025-03-27
申请号：US18895866
申请日：2024-09-25
Applicant: DELTA ELECTRONICS, INC.
Inventor： Chin-Chun LAI , Po-Cheng KUNG , Li-Chia CHEN , Kun-Fu CHUANG , Chia-Feng WU
IPC: B01D53/04
Abstract: This disclosure is directed to an adsorption unit, having a frame, multiple spacer tubes and multiple adsorption granules. The frame has an inlet side and an exhaust side. The spacer tubes are arranged in the frame, and a plurality of through holes are provided on each of the spacer tubes. The adsorbed granules are arranged in the frame, and the adsorbed granules are restricted by the spacers and fixed in the frame so as to locate between the inlet side and the exhaust side. Air enters the adsorption unit from the environment through the inlet side, passes through the adsorption unit, and leaves the adsorption unit through the exhaust side. The air passes through the adsorption unit and returns to the environment so as to contact the adsorption granules to remove carbon dioxide and water.
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