43 results about "Power electronic circuit" patented technology

Method for producing a heat and current conductor in power electronic circuits (202), in which a power electronic circuit is arranged on a printed circuit board (200, 500, 600, 700, 800), in which at least one metallic heat conductor tube (100, 400, 510, 710) is flattened at at least two locations (402, 502, 704), in which the at least two locations (402, 502, 704) are provided with a solderable surface, in which at least two metallic surfaces (206, 508), which are parts of conductor tracks, are provided on the printed circuit board (200, 500, 600, 700, 800), in which at least one metallic surface (206, 508) is located in the immediate vicinity of at least one power electronic component (202) of the power electronic circuit (202) arranged and electrically contacted with the at least one electronic component (202), wherein the at least one metallic heat conduction tube (100, 400, 510,710) at the at least two locations equipped with a solderable surface (302, 304, 306, 308, 402, 502, 704) are soldered to at least two provided metallic surfaces (206, 508) on the printed circuit board (200, 500, 600, 700, 800), wherein current transport via the at least one metallic heat conduction tube (100, 400, 510, 710) takes place at least between the at least two metallic surfaces (206, 508).

A power supply system for a power electronic circuit of an electric vehicle includes a driver board with components configured to activate the power electronic circuit, a monitoring device configured to monitor the supply voltage, and a circuit assembly having a switching element arranged between an accumulator or a phase of the electric motor and the driver board so that the switching element provides a power supply from the accumulator or electric motor for components of the driver board. When the monitoring device detects a failure or reduction in the supply voltage of a component of the driver board, the monitoring device transfers the switching element from an open state to a closed state, for which the supply voltage has failed or collapsed.

Power electronic module, its manufacturing process and vehicle comprising such a module The invention relates to a power electronic module (1) comprising a protective housing (2), forming a Faraday cage and preferably sealed, and at least one circuit, component or set of power electronic components (3) housed in the latter, the housing (2) being formed of two constituent parts (4, 4') assembled together peripherally.This module is characterized in that at least one (4) of its two constituent parts (4, 4') consists of a formed metal sheet on which a liquid cooling circuit (6) is attached or formed at a functional region (5') of its outer face (5), and in that said at least one power electronic circuit, component, or set of components (3) is mounted against the inner face (5'') of the sheet metal part (4) and opposite the aforementioned outer functional region (5'). Figure to be published with the abbreviation: Fig. 1C.

The invention discloses a short-circuit fault-tolerant control method and device for a power semiconductor device of a resonant direct-current converter, and belongs to the technical field of power electronic circuit fault control, and the method comprises the steps: judging the power semiconductor device with an open-circuit fault of the resonant direct-current converter; when one of the first power semiconductor device, the fourth power semiconductor device, the fifth power semiconductor device and the eighth power semiconductor device breaks down, the on-off states of the other three power semiconductor devices are set, and the positive half-wave switching period and the negative half-wave switching period of the resonance type direct-current converter are set; when one of the second power semiconductor device, the third power semiconductor device, the sixth power semiconductor device and the seventh power semiconductor device breaks down, the on-off states of the other three power semiconductor devices are set, and the positive half-wave switching period and the negative half-wave switching period of the resonance type direct-current converter are set. By adjusting the on / off state and the switching period of the power semiconductor device, soft switching under the short-circuit fault of any power semiconductor device of the resonant direct-current converter is realized.

A substrate (1) divided into several regions, having a plurality of central regions (100), each having a planar metal lamination and intended to form individual sub-substrates by dividing the substrate (1), for a power electronic circuit, having a planar insulating body (2) and having planar metallic conductor tracks arranged on its second main surface and having planar metal laminations (3) arranged on its first main surface (20), and having sub-laminations arranged circumferentially around the metal lamination of the sub-substrates present after singulation and also circumferentially on an edge region, wherein a first sub-lamination (4) and a second sub-lamination (5) thereof are arranged on or adjacent to an outer edge (22) of the insulating body (2), and wherein the two sub-laminations (4,5) are at least partially separated from one another by a trench (6) preferably extending to the first main surface (20), and wherein the trench (6) either has a dam (7), wherein the trench (6) is partially filled with a dam material (70), thus maintaining a residual trench (66), wherein the design of the dam material (70) satisfies the following conditions: , • viewed in the direction of the trench (600), the maximum cross-sectional area (800) of the dam material is at least 30% and a maximum of 70% of the clear cross-sectional area (820) of the trench (6); • viewed in the trench direction (600), the length (802) of the dam material (70) is at least 50% of the clear depth (824) of the trench (6); or has a trench structure (9) in which the trench (6) has no clear passage area (810) or a maximum of 50% of the clear cross-sectional area (820) or has a mixed form of dam (7) and trench structure (9).

The invention discloses a constant admittance electromagnetic transient simulation method, which relates to the technical field of power system simulation, and comprises the following steps of: 1, enabling a power electronic switch to be equivalent to a binary resistor, and listing a state equation for a power electronic circuit; step 2, introducing an injection current magnitude of a port where a capacitor is located, and performing block processing on a state matrix in the state equation; step 3, discretizing the processed state equation, and combining a state matrix in the discretized state equation with a port current equation to generate a constant admittance port equivalent equation; 4, inversely solving the state quantity of the power electronic circuit according to the port node voltage; and step 5, obtaining a node voltage according to the constant admittance port equivalent equation, and updating a historical current source according to the node voltage and the state quantity obtained in the step 4. The method has the advantages of being constant in admittance, simple in modeling process and low in calculation amount, and the electromagnetic transient simulation efficiency can be improved.

The application relates to the technical field of low-power electronic circuit control, and discloses a low-power circuit control system based on motion amplitude change, which comprises a motion sensor sub-module, a noise feature acquisition sub-circuit, a low-power control unit, a main function module and a power management module. The motion sensor sub-module is used for outputting only an analog signal containing a background noise component without performing normal motion measurement in a low-power bias mode. The noise feature acquisition sub-circuit is used for obtaining a current feature vector composed of a noise envelope average value and a noise envelope variance. The low-power control unit is used for switching the system among a noise monitoring standby state, a noise feature verification state and a main function working state. The main function module is used for starting and executing a predetermined function task when the main function working state is entered. The background noise component of the motion sensor is used as a judgment basis in the low-power bias mode, the structure reduces the number of function circuits of the motion sensor participating in the standby stage, and thus the energy consumption of the system in the standby stage is reduced.

The utility model provides a sampling circuit and a power conversion device. The sampling circuit is provided with a signal input end and a signal output end; the signal input end is connected with a power electronic circuit; the power electronic circuit includes a power switch operable at a plurality of switching frequencies; the sampling circuit comprises a plurality of trap filter circuits; wherein the plurality of trap filter circuits are connected between the signal input end of the sampling circuit and a grounding point, and / or the plurality of trap filter circuits are connected between the signal output end of the sampling circuit and the grounding point; each wave trap circuit is provided with a corresponding switch unit and a corresponding wave trap unit; the resonant frequencies of the wave trap units in the plurality of wave trap circuits are respectively corresponding to different switching frequencies of the power switch. Therefore, the sampling precision of the electrical parameters of the sampling points in the power electronic circuit can be improved.

The invention discloses a high-stability decoupling method for a power electronic converter, which relates to the technical field of power electronic system simulation and comprises the following steps of: 1, listing a state equation for a power electronic circuit; 2, introducing a half-step display integral into an analytic expression of the state equation, and predicting a state quantity at an intermediate moment; 3, discretizing the state equation by adopting a mixed integration method, adopting implicit integration for an input quantity part, and adopting central integration for a state quantity part; 4, replacing the central integral calculation result in the step 3 with the prediction result of the state quantity in the step 2 to obtain a system discrete equation with A-stability and no time delay; and step 5, splitting the discrete equation of the original system to obtain the discrete equation of each decoupling subsystem, and completing the calculation of a simulation step length. The invention further discloses a high-stability decoupling system of the power electronic converter, non-delay decoupling of the power electronic converter is achieved, and A-stability is achieved while high simulation precision is guaranteed.

The present invention discloses a hierarchical power electronic circuit layout method based on reinforcement learning, which belongs to the field of integrated circuits. The method is mainly divided into three levels: component sequence generation, layout optimization, and wiring optimization. First, the power flow direction of the power electronic circuit is analyzed, and the component layout sequence is reasonably arranged, thereby achieving basic optimization from the top level; then, based on the component sequence, a convolutional neural network is used to extract layout features, and a graph convolutional neural network is used to extract graph features of circuit connection relationships. The unique design rules of the power electronic circuit are embedded in the reinforcement learning reward system, and a deep Q network (DQN) is used to realize the layout of components; through reinforcement learning, the intelligent agent can summarize experience in trial and error without human intervention, and finally generate a layout result that maximizes the reward.

The embodiment of the invention relates to a circuit for stress testing of a power transistor gate. A power electronic circuit is provided that includes at least one power transistor, a gate of the at least one power transistor is coupled to a control circuit, and a source of the at least one power transistor is coupled to a first contact pad, where the control circuit is coupled to a second contact pad, and wherein the first contact pad and the second contact pad are configured to be decoupled from each other when the power electronic circuit is in a configuration for stress testing of the gate of the power transistor, and configured to be coupled to each other when the power transistor and the control circuit are packaged.

A method for manufacturing copper-ceramic composites for power electronic circuit boards includes mixing powders of copper and an active agent in a ball mill that has ceramic grinding bodies for the mechanochemical surface activation of the powders, producing a paste-like composition by adding to the powder a thinning and wetting agent, a plasticizer and a binder, applying the paste to two sides of a ceramic material which is then bonded on the two sides to an oxygen-free annealed sheet copper, and forming a hardening agent from the emerging phase of the chemical compounds corresponding to the material of the circuit boards and from the intermetallics formed with the sheet and powdered copper, which agglomerate into nanosized particles under thermal treatment. The invention provides for the formation of highly reliable copper-ceramic circuit boards with low electrical conductivity, good thermal conductivity and high mechanical strength.

The invention relates to a level shifter for a power electronic circuit. A level shifter includes a current pulse generation circuit coupled to a first power rail and a first (ground) reference rail and configured to output non-overlapping first and second current pulses based on opposite edges of a logic input signal; a latch and a current mirror circuit coupled to the second power rail and the second reference rail, the current mirror circuit configured to mirror non-overlapping first and second current pulses such that the latch is set when the first current pulse is active and reset when the second current pulse is active; and a voltage clearance circuit configured to mitigate a voltage clearance loss between the second power rail and the first reference rail independent of a potential difference of the second reference rail. A power electronic circuit including the level shifter is also described.

The invention relates to the technical field of power electronic circuit fault diagnosis, and discloses a power electronic circuit fault diagnosis method and system based on improved CCO-VMD, and the method comprises the steps: obtaining circuit multi-channel signal data needed by a training model, employing median filtering or wavelet threshold de-noising, guaranteeing the signal stability, carrying out the capital segmentation according to a fixed window length, and carrying out the segmentation according to a fixed window length. Standardizing each channel to prevent amplitude difference from influencing VMD decomposition; according to the problem that a clarias fuscus optimization algorithm is prone to falling into local optimum and insufficient population diversity in actual operation, CCO is improved; the method comprises the following steps: optimizing hyper-parameters, namely a bandwidth control factor alpha and a modal number capital K, of VMD by improving CCO to obtain an optimal solution, and performing VMD decomposition on an output signal to obtain an IMF; converting each IMF to obtain an M-GAF image, and inputting the obtained multi-channel image into CNN-LSTM training to obtain a diagnosis model; and inputting the test sample into the built power electronic circuit fault diagnosis model, and judging the attenuation degree of the capacitor, thereby realizing the capacitor degradation fault diagnosis of the power electronic circuit.

The invention discloses a power electronic circuit dynamic graph simulation method and system for teaching assistance, and belongs to the technical field of power electronics. According to the method, basic elements of a circuit are configured, a semiconductor element is regarded as an ideal switch, a power electronic circuit model is established according to different equivalent topologies in different switching states, and a numerical solution of the power electronic circuit at each sampling time point is calculated through discretization iteration on a time domain. After steady-state detection, sampling data of circuit working voltage and current waveforms are output, and a message system is used for enabling the circuit waveforms to change along with input parameters in real time. The system comprises a starting module, an input module and an output module, and provides simulation demonstration of 18 power electronic circuit models. The method has the advantages of efficient modeling solution, interactive feedback implementation, fine parameter adjustment and the like, and can effectively improve the ability of students to understand and apply the power electronic technology.

The invention relates to a computer-implemented method for determining an optimal topology for a power electronic circuit, in particular a voltage converter, an inverter or a power driver, wherein the topology of the power electronic circuit can be represented by a network using a netlist, comprising the steps: - Providing (S2) a variety of topologies with a respective circuit network of active and passive components, wherein the active components include semiconductor switches and / or diodes; - Providing (S1) requirements for the power electronic circuit, wherein the requirements are user-defined operating points (o m specify m=1... M); - Determining optimized component values ​​for the active and / or passive components for the multitude of topologies depending on an objective function (F) that evaluates the fulfillment of the requirements, - Determining (S10) a respective function value of a given decision objective function (V) for the multitude of topologies depending on the assigned optimized component values; - Selecting the topology from the multitude of topologies depending on the associated function value of the decision objective function (V).

The present disclosure is an aircraft turbomachine (10) comprising: a gas generator (12) having a longitudinal axis (A), a fan (14) located at an upstream end of the gas generator and configured to rotate about said axis, and an electric machine (70) having a substantially annular shape, the electric machine being coaxially mounted downstream of the fan and comprising a rotor (70a) and a stator (70b), the rotor being rotationally coupled to the fan, and the stator being connected to a power electronic circuit (78) by at least one rigid conductive bar (80).

A power electronic device is presented, comprising a hinged, cuboid housing, a first and parallel second base, a first and parallel side surface, and a first and parallel end surface, formed with a first and a second, preferably cup-shaped, sub-housing, and a power electronic circuit arrangement with a first printed circuit board having a first normal direction away from the base as part of the first sub-housing, and a second printed circuit board having a second normal direction away from the second base as part of the second sub-housing, wherein the first printed circuit board is arranged at a distance from the first base and the second printed circuit board is arranged at a distance from the second base, and wherein the first and second printed circuit boards are electrically connected by means of a plurality of connecting elements.wherein a mechanical hinge device connects the first and second partial housings in a hinged manner.

The invention belongs to the technical field of power electronic circuits, and particularly discloses a real-time difference comparison circuit for two paths of dynamic signals, which comprises two comparators A and B, input resistors R1, R2, R3 and R4, resistors R5 and R6 for setting monitoring percentage, output isolation diodes D1 and D2 and a connection relation thereof. Through the design of the whole circuit, two paths of dynamically changing signals can be monitored and compared in real time, the percentage of the difference value of the two signals needing to be compared can be set by adjusting the resistance value of the resistor, and the whole circuit is simple and reasonable in structure, low in cost, high in reliability and high in efficiency.

The invention relates to a power electronic circuit arrangement comprising a multilayer printed circuit board (10) with a conductor track arrangement formed in several layers, and comprising components arranged on the printed circuit board (10) and electrically contacted via the conductor track arrangement. In order to minimize heat loss in the case of intersecting conductor tracks with high currents, the circuit arrangement, according to the invention, includes a first busbar (20) and a second busbar (30) that crosses it in plan view and includes a current-sensing resistor (33), wherein in a crossing region of the two busbars (20, 30), the first busbar (20) is formed by conductor tracks formed in at least 80% of the layers, which are electrically connected to each other via vias (25).and the second busbar (30) is formed by a first busbar section (31) and a second busbar section (32), each formed by conductor tracks extending in at least 80% of the layers, including an uppermost of these layers, which are electrically connected to each other via vias (35), and by the current-sensing resistor (33), which is arranged on a top surface (12) of the circuit board (10) bridging the first busbar (20) and is electrically contacted on both sides of it by the conductor track formed in the uppermost layer of the respective first and second busbar sections (31, 32).

A power electronic device and / or system includes a power electronic circuit, a terminal for electrical coupling to the power electronic circuit, a sealed housing, a fuse disposed outside the sealed housing, and a comparator disposed within the sealed housing. A power electronic circuit is disposed within the sealed housing and electrical access is achieved through terminals extending out of the sealed housing. The fuse is electrically coupled to the power electronic circuit and the terminal. The comparator is coupled to receive a first current or voltage value from a first test point located on a first electrical path through the fuse between the terminal and the power electronic circuit and a second current or voltage value from a second test point located on a second electrical path through the fuse between the terminal and the power electronic circuit. A second test point is located on a second electrical path through the fuse between the terminal and the power electronic circuit.

The application relates to a magnetic fluid permanent magnetic hybrid bearing, which is mainly characterized in that magnetic fluid is added in a bearing gap, a permanent magnet is installed on a bearing rotating shaft, a controllable magnetic circuit is generated by controlling a coil through a power electronic circuit, the permanent magnet on the bearing rotating shaft is attracted, and the rotating shaft is suspended and rotates in a bearing inner cavity. The application also optimizes a control method of the hybrid bearing, improves effective stiffness and damping of high-frequency oscillation outside a controller bandwidth, and improves dynamic performance of the hybrid bearing. Meanwhile, the application solves the problems of high power consumption and high-frequency mode control of a traditional magnetic bearing through a magnetic fluid and permanent magnetic hybrid control scheme, and has good bearing capacity and dynamic performance.

The invention relates to a power electronic circuit arrangement (10), comprising a plate-shaped circuit carrier (12) having an electrically insulating substrate (14) and having a conductor path arrangement (16) on a flat side (15) of the substrate (14) and having one or more power electronic components (18); a busbar (20) for conducting a current from or to a conductor path of a conductor path arrangement (16) of the circuit carrier (12); and a current measuring resistor (22), via which the busbar (20) and the associated conductor path are electrically connected to each other in order to enable a current to be measured by tapping off a measuring voltage falling at the current measuring resistor (22). In order to achieve a good electrical and thermal connection of the current measuring resistor (22) with a simultaneous cost-effective construction and connection technique, according to the invention the busbar (20) has a surface section (26) which is oriented at a vertical distance (d) from and substantially parallel to the flat side (24) of the conductor path arrangement (16), and the current measuring resistor (22) is connected between the surface section of the busbar (20) and the surface section (28) of the relevant conductor path of the conductor path device (16) and is physically and electrically connected with the surface sections (26, 28). The invention further relates to a method for arranging a current measuring resistor (22) in a power electronic circuit arrangement (10).

The invention discloses a power electronic circuit real-time simulation method based on an LC switch and a reverse Euler method and related equipment, and the method comprises the steps: modeling a target power electronic circuit, modeling a switch element in the target power electronic circuit as an LC switch with equal capacitance admittance and inductance admittance, and obtaining a circuit model; discretizing dynamic element characteristics of each element model in the circuit model by adopting a reverse Euler method, and determining an inverse branch admittance matrix of each branch in the circuit model; based on this, according to the invention, through the admittance constant characteristic in the LC switch, the disadvantage of admittance matrix element mutation during switch state switching is eliminated from the modeling level; according to the invention, the FPGA can be adopted, and the branch state of the circuit model is updated based on the inverse branch admittance matrix. Therefore, according to the power electronic circuit real-time simulation method based on the LC switch and the reverse Euler method, a single simulation step length is shortened by integrating multiple dimensions, and the power electronic circuit real-time simulation method based on the LC switch and the reverse Euler method can meet the real-time simulation requirement of a high-dynamic power electronic circuit.

The invention relates to the technical field of power transmission conversion and operation control of a power grid transformer, and discloses a hybrid power electronic transformer, a system, a voltage regulation method and related equipment. The invention discloses a hybrid power electronic transformer which is simpler in structure, higher in efficiency, lower in cost and lower in loss and meets the alternating-current and direct-current hybrid power supply requirement. The hybrid power electronic transformer comprises a winding transformer and a power electronic circuit, the winding transformer is used for voltage grade conversion; the power electronic circuit is used for voltage bidirectional regulation; the winding transformer comprises a magnetic core, and a primary winding, a first secondary winding and a second secondary winding which are arranged on two sides of the magnetic core; the primary winding is connected with a high-voltage alternating-current input end, and the first secondary winding is connected with a low-voltage alternating-current output end; the second secondary winding is connected with the first end of the power electronic circuit, the second end of the power electronic circuit is connected with the low-voltage alternating current output end, and the third end of the power electronic circuit is connected with the low-voltage direct current output end.

Provided is a power electronic circuit comprising at least one power transistor the gate of which is coupled to a control circuit, and the source of which is coupled to a first contact pad, wherein the control circuit is coupled to a second contact pad, and wherein the first and second contact pads are configured to be decoupled from each other when the power electronic circuit is in a configuration for stress testing the gate of the power transistor, and configured to be coupled to each other when the power transistor and control circuit are encapsulated.

The utility model discloses a dry battery output circuit and equipment, and relates to the technical field of power electronic circuits, the dry battery output circuit comprises an acquisition module, a control module and an output module; the output module is respectively connected with the dry battery, the control module and the load; and the acquisition module is also connected with a dry battery and the control module. The acquisition module is used for acquiring the voltage of the dry battery, converting the output voltage into a first detection signal and transmitting the first detection signal to the control module. The control module is used for generating a power-off signal and transmitting the power-off signal to the output module when the first detection signal is not in a first preset range no matter whether the voltage is reduced due to too low electric quantity or the voltage is increased abnormally due to abnormal conditions. And after receiving the power-off signal, the output module can quickly cut off voltage output to the load, so that the dry battery is effectively prevented from being damaged by over-discharge or abnormal voltage of the battery.

This application relates to the field of power electronic circuit technology and discloses a current-source type high-frequency drive circuit and driving method, which corresponds to the current-source type high-frequency drive circuit. This application achieves rapid switching of power switching transistors to reduce switching losses, while simultaneously recovering gate energy dissipated in traditional drivers to reduce drive losses; the boost function reduces the on-resistance of the power switching transistors and reduces conductivity losses; the bipolar gate voltage reduces the phenomenon of false turn-on of the switching transistors caused by crosstalk; under high-frequency, low-power conditions, the negative drive voltage eliminates the current transfer phenomenon present in traditional current-type drives to a certain extent; under high-frequency, high-power conditions, the bidirectional switch completely eliminates current transfer, further improving drive capability and achieving high-current rapid drive; the calculation of the duty cycle suppresses the overshoot of the drive voltage during the dead time, ensuring stable drive operation.

A method (100) for determining performance data of electronic power circuits is disclosed, comprising determining several switching energy values ​​(110) during a period of a control signal of the electronic power circuit; and determining the performance data (120), which includes a switching cycle energy value determined on the basis of the several switching energy values ​​and a number of determinations of the several switching energy values. Furthermore, a computing unit for determining performance data, configured and set up to execute the method, is disclosed.

The circuit arrangement comprises a power electronics circuit (14) with at least one power electronics module (7, 8, 9), a filter device (6), a heat sink (12), a connection (13) and at least one busbar (10, 11), wherein the filter device (6) is at least partially coupled with the busbar (10, 11), the busbar (10, 11) electrically connecting the connection (13) with the power electronics circuit (14), wherein the power electronics module (7, 8, 9) and at least one section (15) of the busbar (10, 11) are thermally connected with the heat sink (12).