15 results about "Power processing unit" patented technology

This invention relates to the field of aerospace propulsion technology, and in particular to an oxygen-resistant Hall thruster electric propulsion system, comprising a Hall thruster, a radio frequency neutralizer, a power processing unit, a working propellant storage and supply system, and an integrated electronic control system. This invention establishes an electrical connection between the Hall thruster and the radio frequency neutralizer, directly connecting the collecting electrode to the negative terminal of a high-voltage power supply, eliminating the holding electrode and its independent power supply branch. Simultaneously, it combines a dual-path working propellant supply structure with oxidation-resistant conductive materials for the anode and collecting electrode. This allows the radio frequency neutralizer to rapidly establish a plasma electron source without the need for traditional hot cathode preheating. After the Hall thruster ejects the ion beam, electrons are automatically extracted based on the potential gradient. This not only reduces the complexity of the system's power supply structure and improves the discharge stability and electron compensation capability in low-purity working propellants and oxygen-containing environments, but also enhances the system's oxygen-resistant lifetime and rapid start-up performance in low Earth orbit oxygen-rich environments.

The invention provides a Hall electric propulsion controller based on dual redundancy and a control method thereof. The controller comprises a first main control unit, a second main control unit, a first power processing unit, a second power processing unit, a first flow control unit and a second flow control unit; the first main control unit and the second main control unit are respectively provided with two paths of independent control signals which are respectively connected with and control the first power processing unit and the second power processing unit; the first main control unit and the second main control unit are respectively connected with and control the first flow control unit and the second flow control unit; when one of the first main control unit and the second main control unit breaks down, the other main control unit takes over and controls the first power processing unit, the second power processing unit, the first flow control unit and the second flow control unit.

The invention provides an ignition starting method and system for an 80mN Hall electric propulsion system, and the method comprises the steps: firstly, powering on a power processing unit, and automatically carrying out the power path self-inspection; whether ignition is conducted or not is determined according to the self-inspection result, if the self-inspection result is normal, execution continues, buffer gas tank closed-loop pressure control is started, and at the moment, the control pressure is the initial pressure; starting a cathode gas path to supply gas, and heating the cathode; whether the starting mode is soft starting or hard starting is judged, if the starting mode is soft starting, cathode ignition is conducted and then anode ignition is conducted, if the starting mode is hard starting, cathode ignition and anode ignition are conducted at the same time, and low voltage is adopted for ignition during anode ignition in the two starting modes; judging whether ignition succeeds or not after anode ignition, if not, quitting the ignition process, and if yes, executing the next step; turning off a cathode heating power supply and a cathode ignition power supply; the anode voltage is gradually increased to a rated value, and the buffer gas tank pressure is gradually increased to a rated value; enabling an ignition fault monitoring program, and completing ignition starting.

A side feeding micro cathode arc thruster (SF-micro-CAT), and an enhanced, circular (axi-symmetric) micro-CAT, each developed for micro-propulsion applications. SF-micro-CAT can include a cuboidal anode, an insulator, and a spring-loaded titanium wire cathode (propellant consumed per pulse) powered by a traditional inductive PPU (power processing unit) circuit. The spring-loaded feeding mechanism allows the cathode to be consumed during operation, providing a continuous supply of propellant. In one embodiment, an arc thruster includes a central anode; a plurality of cathodes, each having a leading end and each extending radially outward from the central anode; an insulator positioned between the central anode and the leading end of each of the cathodes to form a gap therebetween; and one or more feeding mechanisms coupled to said cathodes, where the feeding mechanisms push the leading end of each cathode toward the central anode.

A planar magnetic-electrical power train suitable for large voltage step down and high current application is formed by a number of branches, wherein each branch is formed by a plurality of power processing cells wherein the high output current is extracted uniformly with minimum losses. The planar magnetic-electrical power train is inherently flexible to accommodate diverse form factors. The effective turns ratio is set by the number of turns or layers allocated to the primary and the cell count. The use of an optimized U core allows a simple implementation of fractional turns and the flexibility to tailor the power capability and the desired turns ratio. Output current is drawn in parallel from all cells, permitting distributed placement of output capacitors on each cell and thereby reducing conduction losses and current crowding.

The invention relates to a protective circuit (1) for an appliance circuit breaker or circuit breaker, having: an actively controllable component (B1) which can be controlled in a linear range; - at least one measuring device (SP, SU, Si, SUin, SUout) for determining a power which is converted in the actively controllable component (B1); - a processing unit (uC); - wherein an energy equivalent can be determined on the basis of the determined power and a time between two measurements, - wherein temporally separate energy equivalents are summarised by the processing unit (uC); - wherein at least two time-related limit values (Gt1, Gt2,...Gtn) are provided;, - wherein, when if a limit value (Gt1, Gt2,...Gtn) is reached and / or exceeded by an energy equivalent or the combined energy equivalents in the time assigned to a limit value (Gt1, Gt2,...Gtn), the active controllable component (B1) is actuated by the processing unit (uC) so that the current flow through. The invention also relates to a method.

The application discloses a charging module and system of an electric vehicle based on hybrid power processing. The charging module comprises a first AC-DC converter and a hybrid power processing unit. The hybrid power processing unit is an isolated DC-DC converter structure, comprising an isolation transformer, at least one first Si power processing module, at least one second SiC power processing module, and a second AC-DC converter located at the secondary side of the isolation transformer. The first Si power processing module and the second SiC power processing module are connected in parallel between the DC output port of the first AC-DC converter and the primary side of the isolation transformer. The AC input port of the first AC-DC converter is connected to an AC power supply. The DC output ports of the first AC-DC converter and the second AC-DC converter are both connected to a device to be charged. The application solves the problem that the efficiency, cost, power quality and reliability of the charging stack cannot be considered simultaneously.

The application provides a power-oriented electric propulsion gas supply self-learning closed-loop control system and method, which is composed of a storage and supply unit, a power processing unit, a control unit and an electric thruster; the working current of the electric thruster is monitored, if the current is lower than the lower limit, the valve is opened to supplement the gas for a certain time length, the current value of the electric thruster working maximum 3s sliding average within a certain time length is monitored after the gas supplement is completed, and the gas supplement time length is adjusted according to the maximum value with a certain step distance, and the step distance is corrected according to the number of adjustments. The application solves the working condition drift problem of the electric thruster caused by the state change of the spacecraft or the erosion of the thruster itself in the prior art by using the multi-stage self-learning adjustment mode, under the premise of limited on-orbit computing resources, and collects the working parameters for data accumulation and open-loop control of the fault mode.

A wireless power transmission device is provided. The wireless power transmission device includes a plurality of power transmission antennas, a plurality of sensing antennas, a power processing circuit memory storing one or more computer programs, and one or more processors communicatively coupled to the plurality of power transmission antennas, the plurality of sensing antennas, the power processing circuit, and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the wireless power transmission device to control the power processing circuit to transmit power to a first electronic device disposed in a first region among a plurality of regions through the plurality of power transmission antennas, transmit at least one first signal through the power processing unit using a first sensing antenna among the plurality of sensing antennas, receive at least one second signal through the power processing circuit, using a second sensing antenna among the plurality of sensing antennas, identify, whether an object exists in the first region among the plurality of regions based on the at least one first signal and the at least one second signal, identify a first stay duration during which the object stays in the first region, based on identifying that the object exists in the first region, identify a first cumulative RF radiation value of the wireless power transmission device for the first region during the first stay duration, and based on the first cumulative RF radiation value being equal to or greater than a first threshold for the first region, control the power processing circuit to adjust transmission output of the power to the first electronic device in the first region or to direct the power toward the first electronic device in the first region to a second electronic device in a second region different from the first region.

The invention provides a conductive film adjusting system, a conductive film adjusting method and a pulse type space electric thruster. The conductive film adjusting system comprises a resistance measuring module, a control module, a power processing unit and a high-voltage pulse unit. The resistance measurement module detects the resistance value of the conductive film; the control module determines whether the thickness of the conductive film is in a set thickness range based on a comparison result of the resistance value of the conductive film and a preset resistance value range; the control module is also used for controlling the high-voltage pulse unit to ablate the conductive film when the resistance value of the conductive film is smaller than a set lower limit resistance value; the control module is further used for controlling the power processing unit to discharge through the cathode and the anode when the resistance value of the conductive film is larger than the set upper limit resistance value, and film deposition is increased. When the resistance value is not in the preset resistance value range, the thickness of the conductive film is adjusted through the power processing unit and the high-voltage pulse unit, the thruster failure caused by the thickness factor is avoided, and the service life of the thruster is prolonged.

A highly environmentally adaptable magnetic photovoltaic inverter is provided, comprising a hollow isosceles trapezoidal housing with a heat dissipation grille. Inside the housing are magnetic rings, a detection and protection display unit, a heat sink, a battery, and a power processing unit. The battery is connected to the power processing unit and the heat sink via a DC power supply box and the detection and protection display unit. An information acquisition port on the top of the housing is connected to the input of the power processing unit. The photovoltaic modules are connected to the information acquisition port via wiring, and the power processing unit converts the light energy collected by the photovoltaic modules into electrical energy. Multiple magnetic rings are connected in parallel to the output of the power processing unit, and the electrical energy is output through the magnetic rings. This invention solves the problems of component aging and power imbalance caused by low heat dissipation efficiency in traditional inverters, extending the service life of the equipment. The magnetic connection and power output structure eliminates the need for cumbersome wiring operations.

The utility model discloses an energy storage converter module, and belongs to the technical field of converters. Comprising a box body, and the box body is internally provided with a power processing unit, a communication unit, a heat dissipation and ventilation unit and a segmentation supporting unit. The power processing unit comprises an input and output unit, a filtering unit and a power unit which are connected in sequence; the input and output unit is connected with a power terminal and used for being connected with a power grid and a battery. The partition supporting unit comprises a middle partition plate, and the box body is divided into an upper part and a lower part by the middle partition plate; the heat dissipation and ventilation unit and the filtering unit are arranged below the middle partition plate; and the input / output unit and the power unit are arranged above the middle partition plate. The energy storage converter module provided by the utility model has remarkable beneficial effects in the aspects of simplifying the assembly process, reducing the production cost, improving the overall performance and reliability of the module, optimizing the heat dissipation effect and the like.

The utility model provides a double-gun direct current charging pile controller, which is characterized in that a power supply processing unit, a control unit, a temperature detection unit, a control guide detection unit, an insulation detection unit, a battery voltage detection unit, an Ethernet communication unit, a 4G communication unit, a CAN communication unit, an RS485 communication unit, an RS232 communication unit and an electromagnetic lock unit are arranged on a control panel; and the system integration and processing difficulty is simplified.

The application provides a high-gain DC converter, the converter is composed of two-phase interleaved parallel branches, and comprises an input power supply, a main switch, an active clamping switch, a resonant inductor, a three-winding coupled inductor unit, an energy storage capacitor, a freewheeling diode, an output diode and a load unit. The primary winding of the two coupled inductor units serves as an input filter inductor, and the secondary winding is cross-coupled to form a CLLL voltage doubling unit together with the energy storage capacitor and the freewheeling diode, thereby realizing high-gain output. The converter realizes soft switching operation of all active switches by setting the complementary conduction and dead time of the main switch and the clamping switch, and constructs a resonant circuit, thereby reducing the switching loss. The application has the characteristics of high voltage gain and high efficiency, is suitable for a power processing unit (PPU) of an electric propulsion system, and can effectively meet the stringent requirements of a high-voltage and high-power module inside the PPU on wide-range input, high-gain output and high-efficiency energy conversion.

The invention discloses a high-integration-level integrated hydrogen production and power generation system and a control method thereof, the system comprises a T-type three-level rectifier / inverter and a multi-phase multiple bidirectional buck-boost converter which are used as core power processing units, and hardware multiplexing is carried out between a hydrogen production mode and a power generation mode through a change-over switch. In the hydrogen production mode, the system carries out current closed-loop control on the electrolytic bath, and the overall efficiency of the system is improved through optimal current distribution among the phase converters. In the power generation mode, the system carries out voltage closed-loop control on the direct-current bus, and a double-loop control structure of a bus voltage outer loop and an inductive current inner loop is adopted to maintain the voltage stability of the bus. According to the system, the integration of hydrogen production and power generation functions is realized through hardware multiplexing, mode control and current distribution optimization. The bidirectional buck-boost converter provides core hardware support for bidirectional energy flow and wide voltage adaptation by means of its symmetric circuit topology and automatic mode switching capability based on hysteresis comparison.