Delta Electronics Patente

A power supply includes an AC-DC converter, a feedback circuit, an under voltage protection circuit, a control signal generating circuit, a voltage abnormal protection circuit and an auxiliary under voltage detection circuit. The AC-DC converter converts an AC voltage to a DC voltage. The feedback circuit generates a feedback signal according to the DC voltage. The control signal generating circuit sets the AC-DC converter to convert the AC voltage to the DC voltage. When the auxiliary under voltage detection circuit detects that a duration of the AC voltage being less than a predetermined voltage is longer than a predetermined period, the auxiliary under voltage detection circuit changes a signal value of the feedback signal, to enable the control signal generating circuit by the voltage abnormal detection circuit to set the AC-DC converter to perform a soft start procedure.

A silicon steel sheet stacking structure includes a main silicon steel lamination, a blocking silicon steel sheet, and a riveting blocking portion. The main silicon steel lamination includes silicon steel sheets stacking in a first direction. Each of the silicon steel sheets has at least one through hole. The blocking silicon steel sheet is disposed on the main silicon steel lamination. The blocking silicon steel sheet has at least one through hole. The riveting blocking portion is extended from the blocking silicon steel sheet and is raised above a surface of the blocking silicon steel sheet. The riveting blocking portion is configured to be compressed and generate a deformation, such that the riveting blocking portion pushes at least one magnet located in the at least one accommodating space to abut the at least one magnet against an inner surface of the at least one through hole.

An integrated magnetic component and a manufacturing method thereof for a multi-module DC-DC converter (1) are provided. The integrated magnetic component includes N primary windings (Wp1, Wp2), N secondary windings (Wsl, Ws2) and N magnetic cores (21, 22), and N is an integer greater than one. The N magnetic cores (21, 22) are arranged sequentially, and each magnetic core includes a plate (20), first and second common core legs (CCL), an inductor core leg (PICL, SICL) and a transformer core leg (TCL). The first common core leg and the second common core leg are disposed at a first side (201) and a second side (202) of the plate (20) respectively. The inductor core leg (PICL, SICL) is configured to be wound with a corresponding primary or secondary winding, and the transformer core leg (TCL) is configured to be wound with the corresponding primary and secondary windings interleaved with each other.

An axial flux motor stator structure (100) includes an outer ring-shaped bracket (110), an inner ring-shaped bracket (120), a stator core (130), an upper winding assembly, a lower winding assembly, an upper thin plate (160) and a lower thin plate (170). The stator core is between the inner ring-shaped bracket and the outer ring-shaped bracket and has plural upper and lower stator slots. The upper winding assembly (140) and the lower winding assembly (150) pass through the upper and lower stator slots respectively. Each of the upper thin plate and the lower thin plate includes an outer axial structure, an inner axial structure and a radial structure. The radial structure is between the upper and the lower winding assemblies.

A DC-DC power supply (1, 1a) and control method thereof are provided. The DC-DC power supply (1, 1a) includes a transformer (2, 2a, 2b, 2c, 2d, 2e, 2f), a primary circuit (3), a secondary circuit (4) and a controller (5, 74). The transformer (2, 2a, 2b, 2c, 2d, 2e, 2f) includes a primary winding (21, 21a, 21b, 21c, 21d, 21e, 21f) and a secondary winding (22, 22a, 22b, 22c, 22d, 22e, 22f). The primary circuit (3) is connected with the primary winding (21, 21a, 21b, 21c, 21d, 21e, 21f) and includes a plurality of first primary switches (Q1, Q2, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q1c, Q2c, Q1d, Q2d, Q1e, Q2e), and a plurality of second primary switches (Q3, Q4, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q3d, Q4d, Q3e, Q4e). The secondary circuit (4) is connected with the secondary winding (22, 22a, 22b, 22c, 22d, 22e, 22f). The controller (5, 74) is configured to alternately control the operation of the first primary switches (Q1, Q2, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q1c, Q2c, Q1d, Q2d, Q1e, Q2e) and the second primary switches (Q3, Q4, Q1a, Q2a, Q3a, Q4a, Q1b, Q2b, Q3d, Q4d, Q3e, Q4e) for periodically adjusting a turn-off loss difference therebetween.

A detection method for a drive (1) is provided. Firstly, a step (S1) is performed to determine whether an operating parameter of the drive (1) is normal. If the determining condition of the step (S1) is satisfied, a step (S2) is performed to determine whether a value of the abnormal flag is 1. If the determining condition of the step (S2) is satisfied, the soft-start circuit is disabled. If the determining condition of the step (S1) or the step (S2) is not satisfied, the soft-start circuit (3) is enabled to turn on the switch (8) and then the capacitor (C) is pre-charged in a predetermined period. If a pre-charged voltage of the capacitor (C) is greater than a voltage threshold, the drive (1) enters a standby mode. If the pre-charged voltage of the capacitor (C) is not greater than the voltage threshold, the switch (8) is turned off.

The present disclosure relates to the technical field of electronic power, and in particular to a server, which includes a data processing apparatus and a first heatsink, the data processing apparatus includes a load group and a power supply module group, the load group includes at least two loads, and the power supply module group supplies power to the loads; the first heatsink is thermally connected to the power supply module group, at least part of a projection of the first heatsink in a first plane is located outside a load region, the first plane is parallel to an upper surface of the load, the load region is a minimum outer contour projection region of the load group that can cover all loads in the first plane.

A power supply includes a power converter, a feedback circuit, a control signal generating circuit and a compensating circuit. The power converter generates an output voltage at an output node. The feedback circuit generates a feedback signal according to an output node voltage. The control signal generating circuit provides a control signal to the power converter according to the feedback signal. The compensating circuit includes a reference voltage circuit, a voltage dividing circuit and a switching circuit. When the output node voltage is decreased from the first voltage level to a level threshold or decreased from the first voltage level by an amplitude threshold, the switching circuit is conducted to couple the feedback circuit to the voltage dividing circuit, so the feedback circuit sets the control signal generating circuit to increase a duty cycle of the control signal and/or decrease a frequency of the control signal.

An electronic device (100) to calculate input power (Pr) input to a resonant tank in a resonant circuit (102) includes a bandpass filter (108), a phase detection circuit (110), a peak detection circuit (112), and a processor (114). The bandpass filter receives a resonant current (irp) input to the resonant tank, and filters the resonant current to generate a first baseband current (irp,BPF). The phase detection circuit calculates a phase difference (θv1-i1 ) between the first baseband current and a resonant tank voltage (Vrp) input to the resonant tank. The peak detection circuit generates a baseband current peak value (Irp,PDC) according to the first baseband current. The processor performs a fast Fourier transform on the resonant tank voltage to obtain a resonant tank baseband voltage (Vrp1 ). The processor calculates the input power according to the resonant tank baseband voltage, the baseband current peak value, and the phase difference.

An optical phased array chip (1) includes: a light-emitting unit (11), configured to generate an optical emission signal (LT); a beam-splitting unit (12), connected to the light-emitting unit (11), and configured to transmit the optical emission signal (LT) to an optical antenna unit (13) and receive and transmit a diffusely reflected optical return signal (RLT) to a photodetector unit (14); the optical antenna unit (13), connected to the beam-splitting unit (12), configured to transmit the optical emission signal (LT), and configured to receive and transmit the diffusely reflected optical return signal (RLT) to the beam-splitting unit (12); the photodetector unit (14), connected to the beam-splitting unit (12), and configured to receive and transmit the diffusely reflected optical return signal (RLT) to a signal processing unit (15); and the signal processing unit (15), connected to the photodetector unit (14), and configured to receive the diffusely reflected optical return signal (RLT) in an electric current signal manner converted by the photodetector unit (14) and generate a sensing information.

A double-layer antenna (11), used for an optical phased array chip (1), the double-layer antenna (11) including: a substrate (110); a bottom protective layer (113B), disposed above the substrate (110); a light guide layer (111), disposed above the bottom protective layer (113B); a grating layer (112), disposed above the light guide layer (111), and including a plurality of grating bodies (1121); the grating bodies (1121) arranged periodically with a spacing (2G) along a first axis (SA1) of the light guide layer (111); each of the grating bodies (1121) disposed along a second axis (SA2) of the light guide layer (111); and a top protective layer (113T), disposed above the light guide layer (111) and the grating bodies (1121). A refractive index of the grating layer (112) and a refractive index of the light guide layer (111) are different.

This disclosure provides a bipolar-independent DC power delivery system. The bipolar-independent DC power delivery system includes a grid-tied power electronic converter, a bipolar DC power busway, and a power conversion unit. The grid-tied power electronic converter connects to a medium-voltage distribution grid and converts the distribution grid voltage to two independent DC voltages with same magnitude and opposite polarities. The bipolar DC power busway connects two independent DC voltages generated from the grid-tied power electronic converter to the power conversion unit. The power conversion unit can receive or send electric power from one or two independent DC voltage(s). The proposed DC power delivery system can continue to operate at de-rated power when one of two independent DC voltages fails.

A resonant converter (1) is provided. The detection circuit (7) detects the voltage and/or the current of the output terminal (Vo, VoL). The controller (8) controls the startup frequency of the two first switches (Q1, Q2) and the two second switches (Q3, Q4) according to the voltage and/or the current of the output terminal (Vo, VoL) detected by the detection circuit (7). The soft startup procedure is executed. Consequently, the switching stress of the synchronous rectifier circuit (6) is reduced. The resonant converter (1) of the present disclosure has advantage of enhancing lifespan, enhancing efficiency and enhancing stability of the system.

A non-isolated AC voltage modulation circuit (1, 1a, 1b, 1c, 1d, 1e, 1f) includes an input terminal, an output terminal, a first switch bridge arm (B1), a second switch bridge arm (B2) and a voltage conversion circuit (2). The switch bridge arms (B1, B2) include switches (SW1, SW2, SW3, SW4) sequentially connected in series between a first and a third connection terminal (T1, T3) of the output terminal. The voltage conversion circuit (2) includes a resonant circuit (20, 20a, 20b, 20c) and a soft switch circuit (21, 21a, 21b, 21c). The resonant circuit (20, 20a, 20b, 20c) is connected between a first node (A) and a second node (B) among the switches (SW1, SW2, SW3, SW4). The soft switch circuit (21, 21a, 21b, 21c) includes a fourth connection terminal (211) connected to one of the first node (A) and the second node (B), and a fifth connection terminal (212) connected to one of the first, the second and the third connection terminals (T1, T2, T3) of the output terminal. Alternatively, the fourth connection terminal (211) is connected to a main resonant inductor of the resonant circuit (20, 20a, 20b, 20c), and the fifth connection terminal (212) is connected to the second connection terminal (T2).

A system (1) for interactive machine parameters optimization including a database (12) and a processor ()11 is disclosed. The database (12) records multiple parameter categories (121), which are used for quality test. The processor (11) executes following actions: obtaining a batch recommended parameter combinations number; generating at least one parameter combination according to the parameter categories (121) and the batch recommended parameter combinations number; performing at least one stage-testing to a product produced based on the parameter combination to generate a testing result for the parameter combination of each stage-testing, wherein, until current stage reaches a preset testing stage, obtaining another parameter combination satisfied current stage-standard and performing next stage-testing to the product corresponding to the obtained parameter combination; generating an optimized parameter combination when the preset stage is reached and a default termination condition is satisfied; and, when the preset stage is reached but the default termination condition is unsatisfied, repeating the actions.

A resonant converter (100) is provided. The resonant converter (100) includes a primary circuit (2), an integrated transformer (1), a secondary circuit (3), a local ground (102), a first Y capacitor (CY1, CY2) and a second Y capacitor (CY3, CY4). The primary circuit (2) has a first positive line and a first negative line. The integrated transformer (1) is electrically connected to the primary circuit (2). The secondary circuit (3) is electrically connected to the integrated transformer (1) and has a second positive line and a second negative line. The first Y capacitor (CY1, CY2) is coupled between the local ground (102) and the first positive line or the first negative line of the primary circuit (2). The second Y capacitor (CY3, CY4) is coupled between the local ground (102) and the second positive line or the second negative line of the secondary circuit (3). The first Y capacitor (CY1, CY2), the second Y capacitor (CY3, CY4) and the local ground (102) are configured to circulate common mode noise currents between the primary circuit (2) and the secondary circuit (3).

An AC-AC converter (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1m, 1n) and a power supply system (9) are provided. The AC-AC converter (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1m, 1n) of the present disclosure includes a first AC terminal (2) with two sub terminals (21, 22), a second AC terminal (3) with three sub terminals (31, 32, 33), and a first bridge arm (4) with two switch assemblies (41, 42). The AC-AC converter (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1m, 1n) receives and converts the input power between two wires and three wires. The two switch assemblies (41, 42) are activated, and bidirectional power flow is allowed. The two switch assemblies (41, 42) are performed as a voltage source for supporting both balanced and unbalanced loads. Both active and reactive power are also supported. Moreover, the AC-AC converter (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1m, 1n) of the present disclosure has the advantages of reducing weight, size and cost, and enhancing conversion efficiency.

An uninterruptible power supply system includes a bidirectional AC-DC converter, a resonant converter, an automatic voltage regulation circuit and a control unit. When an AC input voltage is out of a predetermined voltage range and within a voltage regulation range, the automatic voltage regulation circuit, the resonant converter and the bidirectional AC-DC converter generate an AC supplementary voltage at an output terminal based on the AC input voltage and generate an AC output voltage based on the AC input voltage and the AC supplementary voltage, so that the AC output voltage is within the predetermined voltage range. When the AC input voltage is out of the voltage regulation range, the resonant converter and the bidirectional AC-DC converter generate the AC output voltage at the output terminal based on discharge voltage of a battery, so that the AC output voltage is within the predetermined range.

The present invention provides a magnetic component (1a, 1b, 2, 3, 4, 5). The magnetic component (1a, 1b, 2, 3, 4, 5) includes a magnetic core (11, 21, 31, 41), at least one winding (12, 22, 32, 42, 52) and at least one insulating and thermal-conducting element (13, 23, 33). The at least one winding (12, 22, 32, 42, 52) is wound around the magnetic core (11, 21, 31, 41). The at least one insulating and thermal-conducting element (13, 23, 33) is configured to at least partially encapsulate or be attached and coupled to at least one of the magnetic core (11, 21, 31, 41) and the winding (12, 22, 32, 42, 52). The insulating and thermal-conducting element (13, 23, 33) is served as a thermal bus path for transferring the heat generated by the magnetic core (11, 21, 31, 41) and/or the winding (12, 22, 32, 42, 52).

A power circuit and a control method thereof are disclosed. The power circuit includes a switching element, a switch driver chip, a clamping circuit and a capacitor. The switch element includes a control terminal, a first current conduction terminal and a second current conduction terminal. The switch driver chip includes a desaturation detection circuit and a switch driving circuit. The desaturation detection circuit includes a comparator. A non-inverting input terminal of the comparator is electrically connected to a current source and the first current conduction terminal. An inverting input terminal of the comparator receives a reference voltage. The switch driving circuit outputs a first control signal to control the operations of the switching element according to a comparator output signal from the output terminal of the comparator. A voltage at the non-inverting input terminal is clamped by the clamping circuit when the switching element is turned on. The capacitor is electrically connected between the non-inverting input terminal and a ground terminal. A voltage value of the reference voltage is regulated according to a capacitance value of the capacitor and a switching specification of the switching element. If the capacitor voltage of the capacitor is greater than the reference voltage, the switching element is turned off under control of the switch driving circuit.

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An MQTT-based Modbus network system is disclosed. The network system includes: multiple master devices, multiple slave devices, a master connector connected with the multiple master devices through Modbus protocol, a slave connector connected with the multiple slave devices through Modbus protocol, and an MQTT broker connected with the master connector and the slave connector through MQTT protocol. The master connector publishes a requesting message to the MQTT broker based on a request from the master devices and manages a responding message aimed at the requesting message. The slave connector transmits sensing data of the slave devices or responds to one or more of the master devices, either based on an updating status of the sensing data of the slave devices or based on the requesting message published by the master connector.

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A fuel cell control system, which includes an electrochemical detection apparatus, a control apparatus and a power converter, and is used for coupling a fuel cell to supply power to a load. The electrochemical detection apparatus includes a sensing apparatus and a processor. The sensing apparatus is used for sensing a cell current and a cell voltage. The processor is used for executing electrochemical analysis on the basis of the cell voltage and the cell current, and determining a water content state of the fuel cell. The control apparatus is used for adjusting a fuel state of the fuel cell when the water content state is a dry film state or a water-saturated state. The power converter is used for determining a loading condition of the fuel cell, and generating output power on the basis of the cell voltage and the cell current when the water content state is in a normal state, wherein the cell voltage and the cell current are related to the loading condition. The present disclosure further relates to a fuel cell control method and an electrochemical detection apparatus.

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A power supply device applied to fuel cells, comprising a power conversion circuit and a control circuit. The power conversion circuit is configured to output corresponding power to a load on the basis of a power input signal of a fuel cell. The control circuit is configured to generate an input current control signal on the basis of an input power command and a power ramp rate command, or an input current command and a current ramp rate command, and a measured power value or a measured current value. On the basis of the input current control signal, the control circuit generates a control signal, and accordingly controls the power conversion circuit to adjust the power or current of the power input signal of the fuel cell. The input current of the power supply device can reach the expected target more quickly, and the power supply device is prevented from excessively drawing input power or current from the fuel cell. The present application also relates to an operation method.

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