136 results about "Transverter" patented technology

The present application relates to the technical field of equipment state monitoring, in particular to a device state monitoring and intelligent early warning method based on edge computing, comprising collecting the nameplate text and control parameters of frequency converters, motors, pump groups and other equipment, splitting fields and judging component relationships, generating component calibration lists; combined with register addresses and other screening binding points, obtaining edge state sequences; verifying start-stop, steering and temperature rise states according to time stamps, obtaining alarm approval lists; combining position and time sequence to merge alarms, establishing early warning trigger lists; writing edge side early warning output tables and hanging state labels, generating state early warning information. The present application screens and binds key measuring points, realizes stable correspondence between data and components; synchronously aligns operating parameters based on time stamps and jointly judges start-stop, steering and temperature rise relationships, improves state recognition consistency; combines spatial position and time interval to group and merge alarms, forms a continuous alarm structure that can be positioned, and enhances early warning integrity.

This application discloses a wind tunnel-based noise detection method, apparatus, storage medium, and electronic device. The method includes: when testing a test piece in a wind tunnel, acquiring a measured noise spectrum in the testing environment and obtaining the operating frequency of the wind tunnel's inverter; matching the background noise spectrum corresponding to the operating frequency in a background noise spectrum library based on the operating frequency; aligning and dividing the measured noise spectrum and the background noise spectrum using a frequency band division rule adapted to the inverter's operating frequency to obtain multiple frequency band units; based on the acoustic energy density of the measured noise spectrum and the background noise spectrum within each frequency band unit, extracting the energy component corresponding to the background noise spectrum from the measured noise spectrum through directional orthogonal projection, and reconstructing the spectrum of the residual energy after extraction to obtain the effective aerodynamic noise spectrum of the test piece; and calculating the noise detection result of the test piece based on the effective aerodynamic noise spectrum.

This application relates to the field of air conditioning technology, and more particularly to an outdoor unit. The outdoor unit of this application has a cooling channel constructed within the motor housing of the compressor, and a mounting cavity is formed by providing a mounting shell on the motor housing. The inverter includes a first part and a second part. The first part is arranged within the mounting cavity, and heat dissipation is achieved using the cooling channel and the thermal conductivity of the motor housing. The second part is arranged independently of the motor housing. The first part includes an inverter module and a filter capacitor. The inverter module generates a significant amount of heat and is in contact with the motor housing, ensuring effective heat dissipation for the inverter module and improving its heat dissipation efficiency, thus preventing the temperature of the filter capacitor from being affected by insufficient heat dissipation from the inverter module. The filter capacitor generates less heat and is located on the side of the inverter module away from the motor housing. The remaining cooling capacity after heat exchange with the inverter module via the refrigerant channel is used to dissipate heat from the filter capacitor, ensuring its service life and reducing maintenance frequency.

This invention discloses an integrated navigation transmitter assembly based on digital multi-beam technology, belonging to the field of phased array technology. It includes a lower panel, a transmitter terminal, an up-converter, a power amplifier, a receiver-resistance filter, and a upper panel. This invention adopts an integrated design, combining the transmitter terminal, up-converter, power amplifier, and receiver-resistance filter into a single assembly, resulting in a compact structure and convenient installation and maintenance. It employs a decentralized design, distributing signal generation functions to each transmitter assembly, achieving beam delay, phase, and amplitude control in the digital domain. Compared to traditional analog TR assemblies, this provides higher control precision and more flexible beam pointing. Furthermore, this invention utilizes modular shielding technology, placing digital circuits, analog circuits, and high-power equipment in independent metal shielding cavities, significantly reducing signal leakage and solving the problem of electromagnetic interference between assemblies in large-scale array deployments. This invention has good versatility, allowing adjustment of the transmitted signal waveform and frequency as needed.

Adjustable frequency drives (AFDs) and methods of operating the same are described. An AFD includes a plurality of inverters having first terminals that are coupled to respective phases of a motor and having AC output terminals connected to one another at an AC neutral node. A voltage at the AC neutral node is detected. A root-mean-squared (RMS) voltage measurement is generated from the detected voltage. A potential ground fault is identified responsive to the generated RMS measurement. The AFD is controlled responsive to identification of the ground fault. Identifying a potential ground fault responsive to the generated RMS voltage measurement may include comparing the RMS voltage measurement to a reference value.

A multifunctional integrated ground testing system for spaceborne equipment is disclosed, covering the multifunctional testing field of spaceborne equipment. It provides reliable support for the functional performance testing of spaceborne equipment. The system includes an integrated management module, a telemetry and data processing unit, an interface forwarding simulator, a Ka-band converter, an RF link network, an interface forwarding network, and power supply equipment. Adopting a modular design, it features data interaction between the various components of the integrated ground testing system, human-machine interaction, remote control command parsing and distribution, telemetry information parsing, display and storage, health information monitoring, and dynamic signal simulation parameter calculation and distribution. This system solves major problems such as the limited number of connected spaceborne equipment and the single nature of functional performance test items, providing reliable and stable technical support for the ground testing of spaceborne equipment.

This invention proposes a multi-parameter display inverter operation panel, including a segment code screen, a main controller, a driver, an inverter controller located within the inverter, and multiple buttons. The main controller is communicatively connected to both the inverter controller and the driver. The main controller receives input commands from the buttons and sends these commands to the inverter controller. The inverter controller controls the inverter according to the input commands and outputs feedback commands. The main controller receives the feedback commands and sends them to the driver. The driver is communicatively connected to the segment code screen via pins and drives the segment code screen according to the feedback commands, enabling the segment code screen to display the latest parameters of the inverter. This invention proposes using a driver to drive the pins of the segment code screen. The driver can control a segment code screen with more fields using fewer pins, effectively increasing the number of parameters displayed on the inverter operation panel while reducing costs. This facilitates a more intuitive display and debugging of the inverter's operating status.

An electric compressor in which a through hole through which a terminal pin electrically connecting an inverter unit to a motor unit passes is formed in a partition wall, and the terminal pin is integrally injection-molded into the through hole together with a fixing unit, thereby sealing a gap between the terminal pin and a housing without a separate sealing member and an assembly member, and enabling modularization of the housing and the terminal pin.

This invention relates to the field of inverter cooling technology, and more particularly to a self-controlled water-air circulation heat exchange device for inverters, comprising a water tank, a water pump for conveying water, and a heat exchanger assembly, and further comprising: a water outlet, and a return water outlet is provided next to the water outlet; this invention utilizes the collaborative action of an electromagnetic starter, an automatic control system, and a sensing unit composed of a liquid level sensor, a pressure sensor, a temperature sensor, and a flow sensor in an intelligent control mechanism. The temperature sensor monitors the return water temperature change in real time. When the heat source power consumption is low, the automatic control system precisely reduces the speed of the water pump and the main motor, so that the heat dissipation capacity and heat generation are dynamically matched, avoiding ineffective energy consumption. When the heat source power consumption increases, the speed is automatically increased to enhance heat dissipation, ensuring that the temperature rise is always controllable. Compared with traditional constant speed systems, this significantly reduces operating energy consumption, while greatly improving the equipment's adaptability to different operating conditions and operational safety.

1. Name of the product in this design: Inverter Complete Machine Test Platform Equipment. 2. Purpose of this design: For testing the overall performance of frequency converter products. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

By extending the lifespan of the refrigeration unit and reducing the frequency of replacement, the operating rate of the MRI system will be improved. [Solution] The cold head life extension mode is implemented. In the cold head life extension mode, the refrigerator's displayer is operated at a constant frequency lower than a predetermined upper frequency, regardless of the temperature of the superconducting coil, and the compressor inverter controls the drive frequency of the compressor drive unit according to the temperature of the superconducting coil.

The application relates to a control method of a heat dissipation device and a related device, the heat dissipation device comprising a first heat dissipation flow channel covering a first temperature control area in a power module group and a second heat dissipation flow channel covering a second temperature control area in the power module group, the first heat dissipation flow channel being communicated with a refrigeration circuit through a first control member, the second heat dissipation flow channel being communicated with the refrigeration circuit through a second control member, the first temperature control area and the second temperature control area having different heat loads; the method comprising: acquiring module temperatures of each power module in the power module group; determining, for each module temperature, a comparison result between the module temperature and a target dew point temperature; and controlling the first control member and the second control member based on all the obtained comparison results. The application guarantees the heat dissipation demand of a high heat load area and prevents condensation in a low heat load area due to excessive heat dissipation, thereby improving the operation stability and service life of a frequency converter.

This utility model discloses a crane-train vehicle anti-lifting protection system, including a machine room switch, a main unit, a display screen, a system switch, a laser anti-lifting system, and a weighing anti-lifting protection system. The laser anti-lifting system includes four laser sensors, an I / O unit, and a spreader-mounted switch. The four laser sensors are installed at the four corners of the container spreader's lower frame and are electrically connected to the I / O unit. The I / O unit, the spreader-mounted switch, and the machine room switch are sequentially connected for communication. The weighing anti-lifting protection system includes a voltage acquisition unit, a current sensor, and a power acquisition unit. The voltage acquisition unit and current sensor are installed inside the frequency converter of the hoisting mechanism's motor. Both the voltage acquisition unit and current sensor are electrically connected to the power acquisition unit, which is communicatively connected to the machine room switch. This utility model achieves accurate detection of the train's undercarriage and lifting status, reducing errors caused by single technologies and improving the system's detection accuracy and safety.

This invention discloses a grain depot equipment operation status monitoring and green energy-saving control system, belonging to the field of intelligent grain depot control technology. It collects the instantaneous output frequency and total harmonic distortion (THD) of the variable frequency drive equipment, and simultaneously separates high-frequency noise components higher than the grain temperature change frequency. Based on the output frequency, it determines whether it falls into a sensitive frequency band, and performs causal correlation analysis between the high-frequency noise energy spectrum and the THD to calculate a reliability index. When the reliability exceeds a threshold, it determines that the temperature sampling value is contaminated by harmonics, discards the value, and generates a repaired temperature value based on the heat diffusion law of the grain pile using time-domain prediction or spatial interpolation. The repaired value is used for energy-saving control drive; when a temperature jump and an energy-saving control action are detected to be inversely related, the start / stop command of the variable frequency drive equipment is forcibly blocked. This invention, by identifying and suppressing harmonic interference from the variable frequency drive, avoids reverse control caused by temperature data jumps, ensuring the safety and reliability of energy-saving operation of the grain depot.

The utility model discloses a kind of laminated aluminium bars of three-level frequency converter, comprising: laminated aluminium bar, mounting hole, mounting plate, mounting hole is set in the both ends of laminated aluminium bar, mounting plate has two, and is located the lower surface of both ends of laminated aluminium bar;Mounting assembly, mounting assembly includes fixed column, clamping slot, sliding slot and sliding block, fixed column is penetrated in mounting hole inside, clamping slot is set in the lower end of fixed column, sliding slot is set in the lower end of the outside of mounting plate, sliding block sliding penetrates sliding slot inside, the side of sliding block is fixed with fixed frame, the side wall of mounting plate is set with connecting groove, and connecting groove and connecting hole are mutually penetrated, fixed frame inside sliding penetrates with clamping post, the middle part of the outer surface of clamping post is fixed with baffle, the side of baffle is fixed with spring, and spring is located in fixed frame inside.The utility model is through the cooperation of clamping post and connecting groove, clamping slot, realize automatic limiting and fixed, without using other tools, greatly reduce the operation complexity.

This application provides a method, system, device, and medium for designing output filter parameters for a frequency converter, relating to the field of frequency converter filtering technology. The method includes: obtaining target parameters of the frequency converter; determining a first resonant frequency constraint condition for the output filter in the frequency converter based on the rated fundamental frequency and pulse width modulation switching frequency; determining the total control delay based on the pulse width modulation switching frequency, and determining a second resonant frequency constraint condition for the output filter based on the total control delay and the controller parameters of the frequency converter, thereby determining the resonant frequency range of the output filter; determining the range of filter capacitor parameters for the output filter based on the rated voltage, rated current, and rated fundamental frequency; and determining the target resonant frequency, target filter capacitor parameters, and target filter inductance parameters for the output filter based on the resonant frequency range, the filter capacitor parameter range, and the motor stator inductance. This application can effectively suppress the resonance of the frequency converter output filter and effectively avoid the risk of instability.

The application discloses a kind of power wave transceiver of short-distance wireless power supply of rotating shaft body and transmission method, it is related to short-distance wireless power wave power supply technical field.For the defects that the service life is short, reliability is low, is susceptible to temperature and humidity, salt fog, vibration impact in harsh environment under traditional rotating shaft body carrying battery power supply mode, the device is composed of wireless power wave transmitting circuit, receiving circuit and wireless magnetic coupling circuit, transmitting circuit generates medium-high frequency electromagnetic field without electromagnetic pollution through medium-high frequency converter and resonance circuit, receiving circuit rotates synchronously with rotating shaft body, realizes magnetic energy wireless transmission through closed magnetic flux loop, and power supply for load on shaft body after rectification and voltage stabilization.

This invention discloses a remote monitoring device for variable frequency loads, relating to the field of automation control technology in the metallurgical industry. It includes: at least one RS485 hub; at least one programmable logic controller (PLC), the PLC being communicatively connected to the RS485 hub; multiple intelligent circuit breakers, each of which is communicatively connected to the RS485 hub; a main circuit terminal block for connecting to the output of the frequency converter; a first power module electrically connected to the detection elements and actuation mechanisms inside each intelligent circuit breaker; a second power module electrically connected to the PLC; and a shielded grounding terminal for connecting to the shielding layer of the device's control circuit. Through the human-machine interface between the PLC and a host computer, operators can remotely view the operating parameters of each load, such as current, voltage, and residual current, without needing to visit the site, thus achieving remote monitoring.

The application discloses a kind of energy storage frequency converter scheduling control method and system, it is related to power electronics field.The method includes the following steps:1, based on the real-time operation data of thermal power unit, the response delay time and the climbing rate constraint of thermal power unit under current working condition are identified online, and the climbing rate constraint is corrected in combination with thermodynamic parameters, and the time delay dynamic model of thermal power unit is established;Step 2, taking the frequency modulation performance and battery aging cost as the optimization target, the energy storage charging and discharging power sequence, the state of charge dynamic working interval are solved, and the life sensitive coefficient associated with the gradient of battery aging cost function is generated.The application generates the life sensitive coefficient associated with the gradient of battery aging cost, and embeds it as the dynamic constraint of power variation rate into model predictive control, and simultaneously corrects the aging parameter according to actual temperature rise feedback, to realize the dynamic trade-off of frequency modulation performance and battery life.

The utility model provides a kind of dual-mode frequency converter, including front shell and radiator, the radiator includes side wall and back wall, the lower end of the back wall is close to front shell, its upper end is inclined to the rear surface of radiator direction extension and then vertically upward extension, so that the rear surface of radiator forms the air guide groove of lower end groove depth greater than upper end groove depth, the back wall is vertically set and is extended to the rear surface of radiator direction and is equipped with the heat dissipation fin of heat dissipation groove bottom position correspondence, the lower end of the air guide groove is equipped with heat dissipation fan;The upper end groove width of the air guide groove narrows to make the wall thickness of side wall upper segment position thickening to form the heat conduction plane that is level with the rear surface of radiator with the side wall surface to the rear surface of radiator;The surface of the back wall to front shell forms the inclined installation surface corresponding to inclined position and the vertical installation surface corresponding to vertical position, and the IGBT module is mounted on the inclined installation surface.The utility model has the advantages that the heat dissipation power redundancy is large, and active or passive heat dissipation can be carried out according to installation occasion.

This invention discloses an energy-saving system for an elevator and an elevator lift based on AC contactor linkage control. The energy-saving system includes: a linkage signal acquisition module, a rectifier module, an inverter module, an energy storage module, and a control module. The linkage signal acquisition module acquires the on / off state of the AC contactor and the main circuit current value of the AC contactor, and outputs it to the communication terminal of the control module. The input terminal of the rectifier module is connected to the three-phase power line between the frequency converter and the AC contactor, and the output terminal is connected to the rectifier terminal of the control module. The input terminal of the inverter module is connected to the inverter terminal of the control module, and the output terminal is connected to the three-phase input terminal of the frequency converter. The energy storage terminal of the control module is connected to the output terminal of the energy storage module. The control module, when the AC contactor is in the on state, based on a comparison between the main circuit current value of the AC contactor and a preset current range, connects the path between the energy storage terminal and the rectifier terminal, or connects the path between the energy storage terminal and the inverter terminal.

A hybrid wideband / narrowband direct digital transceiver. In an example, the transceiver includes a first-stage downconverter configured to convert a radio frequency (RF) input analog signal to a first intermediate frequency (IF1) narrowband (NB) input analog signal; a second-stage downconverter configured to convert the IF1 NB input analog signal or a millimeter wave (mmW) input analog signal to a second intermediate frequency (IF2) NB input analog signal; one or more analog to digital converters (ADCs) configured to convert one or more of the IF1 NB input analog signal, the IF2 NB input analog signal, and the RF input analog signal to digital input signals; and a processor configured to control the first-stage downconverter to set a center frequency and bandwidth of the IF1 NB input analog signal and control the second-stage downconverter to set a center frequency and bandwidth of the IF2 NB input analog signal.

This invention discloses an active disturbance rejection energy feedback control method and system for a variable frequency drive motor, belonging to the field of motor drive control technology. The method includes: employing a virtual synchronous motor control strategy for the grid-side rectifier of the back-to-back inverter to provide virtual inertia and damping to the power grid; employing vector control for the motor-side inverter; establishing a small-signal model of the system; and adaptively tuning the virtual inertia and damping parameters based on the model response characteristics and DC voltage constraints to achieve active disturbance rejection energy feedback during regenerative braking. The system includes: a back-to-back inverter, a grid-side rectifier controller, a motor-side inverter controller, and a parameter tuning module, which work together to implement the above method. This invention effectively suppresses the impact of feedback power on the power grid, fully utilizes the buffering capacity of the DC capacitor, and achieves efficient energy feedback while ensuring DC voltage stability, thereby improving the overall energy efficiency and operational safety of the system.

The application relates to the technical field of industrial automation control, and proposes a control method, device, equipment and medium of a high-voltage frequency converter. The method comprises the following steps: receiving a ready instruction sent by a first control end, collecting real-time state signals of multiple associated components in the high-voltage frequency converter in parallel according to the ready instruction; performing logical judgment on the real-time state signals of each associated component and preset respective corresponding ready conditions; determining to enter a ready waiting state only when the real-time state signals of all the associated components all satisfy the corresponding ready conditions; after determining to enter the ready waiting state, keeping each associated component working and collecting the running state of each associated component in real time, generating and outputting a ready waiting signal to a second control end; receiving a start instruction returned by the second control end according to the ready waiting signal, and performing corresponding start operation according to the start instruction. Through the technical scheme, the control of safe and rapid start is realized.

1. Name of the product in this design: Inverter housing. 2. Purpose of this design: This design is used for the housing of a frequency converter. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses a kind of marine frequency converter waste heat recovery and recycling system, it includes frequency converter, air extractor, temperature difference sensor, power generation power loop;Frequency converter and air extractor are equipped with air extractor air pipe between;Air extractor air pipe is equipped with check valve;Power generation power loop has working medium in pipeline;Power generation power loop includes evaporator, organic rankine cycle power generation device, condenser, working medium pump;Evaporator, organic rankine cycle power generation device, condenser, working medium pump are sequentially connected;Working medium pump is connected to evaporator.The application can recover and recycle waste heat generated by frequency converter, achieve the purpose of ship energy saving and emission reduction, it is both economical, and environmental protection.