74 results about "Type frequency" patented technology

The utility model discloses a kind of internal electronic device partition installation type frequency converters, its shell is separated into left side chamber, middle air duct and right side chamber by left, right partition, left side chamber sets up rectifier module group and direct current contactor, right side chamber sets up drive board and IGBT module group, air duct installs radiator, capacitor group transversely penetrates air duct and is fixed between left, right side partition, realize that rectifier module group and IGBT module group share radiator;Shell top is equipped with protective piece and receives control panel, inlet group external fan group brings in airflow and carries away heat.The utility model concentrates high heating element in air duct both sides by partition installation, utilizes shared radiator and fan group to realize high-efficiency heat dissipation, avoid heat interference;Control panel is independently laid in top protective piece, and optimization space utilization rate;The utility model is in guaranteeing heat dissipation performance, through structure optimization makes overall layout compact, reduce the volume of frequency converter, it is favorable to reduce cost.

The utility model discloses a modularized dislocation type frequency conversion cabinet, the back side of a cabinet body is provided with a back plate which can fully seal an opening at the back side of the cabinet body, the cabinet body is internally provided with a vertical partition plate which divides the cabinet body into a front cavity and a rear cavity, and the vertical partition plate and the cabinet body are integrally formed. The cavity close to one side of the cabinet door is a switch cavity, and the cavity close to one side of the back plate is a staggered mounting cavity; the staggered quick-release assembly is detachably arranged in the staggered mounting cavity, the quick-release assembly comprises staggered transverse partition plates and staggered longitudinal partition plates, the staggered transverse partition plates are detachably connected with the cabinet body, and the staggered longitudinal partition plates are detachably arranged between the two staggered transverse partition plates; the corresponding frequency converters can be arranged on different mounting plates through the detachable staggered transverse partition plates and the staggered longitudinal partition plates, and when the frequency converters are used for the second time, the corresponding connecting lines of the frequency converters can be directly disassembled, and then the staggered longitudinal partition plates can be directly disassembled, so that complete disassembly can be realized; and the traditional method that the fixing bolts can be taken out after being completely detached is avoided.

This high-frequency signal generation device is provided with: (A) a clock signal generation unit that generates a clock signal using a harmonic component generated by an amplifier having nonlinearity; (B) a direct digital synthesizer (DDS) that generates a frequency signal having a frequency set by the frequency setting data, using the clock signal as a system clock for operating the internal processing; and (C) a frequency-increasing unit that is configured from a non-active frequency multiplier that does not use an active element, and that increases the frequency of the frequency signal generated by the DDS. A clock signal is generated using a harmonic component generated by an amplifier having nonlinearity, and in a frequency variable function, a delay time is shortened to cope with a high speed, and spurious and phase noise are suppressed to cope with a high C / N ratio.

The invention belongs to the technical field of power system control, and the method comprises the following steps: improving a manual failure area unit of primary frequency modulation, when a frequency deviation delta F'exceeds a frequency dead zone Ef, increasing a superposition amount for the calculated frequency deviation delta F, and when primary frequency modulation action is carried out, adding a delay filtering link; optimization is carried out on the superposition amount and the delay link for adaptive adjustment, and prediction and multi-stage frequency modulation are carried out during a primary frequency modulation action; and when the primary frequency is reset, a return difference link is added. According to the method, the algorithm of the manual failure area is improved, a step-type frequency superposition amount is added to the calculated frequency difference, and the adjustment amount of frequency modulation is increased, so that the problem of insufficient integration of frequency modulation is overcome; when the frequency deviation is weak, a step type is added to form a larger output signal, the signal output form is a sudden change form, and the dead zone of each link is overcome; time delay and return difference are increased, and frequent jitter which is useless for primary frequency modulation and is caused by frequency crossing of a frequency dead zone edge of a power grid system is prevented.

The invention discloses a cascade frequency selective surface with a steep transition band and a wide passband. The cascade frequency selective surface sequentially comprises a frequency selective surface with a steep sideband, a honeycomb core layer and a frequency selective surface with a wide passband from top to bottom along a Z-axis direction, the frequency selective surface with the steep sideband is used for providing a frequency response characteristic of rapid roll-off at the edge of a passband to form a steep transition band; the frequency selective surface with the wide passband is used for providing a broadband wave-transparent characteristic and a broadband stop-band suppression characteristic; the honeycomb core layer is used for cascading a frequency selective surface with a steep sideband and a frequency selective surface with a wide passband; and electromagnetic coupling between the upper and lower layers of frequency selection surfaces is reduced, so that the frequency selection surface with a steep sideband and the frequency selection surface with a wide passband maintain relatively independent resonance characteristics. According to the invention, the square annular patch with central symmetry is used, and the four branches are added, so that the symmetry enables the angle to be stable, and the processing complexity is simplified.

The invention discloses an angle-adjustable frequency stabilization device for a laser gyroscope, and belongs to the field of laser gyroscopes. The device comprises a frequency stabilization spherical mirror and an annular thin rib structure formed by processing a glass material, coaxial columnar protrusions are arranged at the two ends of the center of the frequency stabilization spherical mirror, the end of the columnar protrusion at one end is a concave spherical surface, and the columnar protrusion at the other end is a jackscrew contact surface; the clamping mechanism is used for installing the frequency stabilization spherical mirror; the 3-4 jackscrews are connected with the grabbing and clamping mechanism through threads, and the end surfaces of the jackscrews are in tight contact with the jackscrew contact surfaces on the columnar bulges of the frequency stabilization spherical mirror; the two piezoelectric ceramic pieces are arranged on the upper surface and the lower surface of the card grabbing mechanism respectively and used for achieving frequency stabilization through voltage control. According to the invention, through different screw-in amounts of 3-4 jackscrews, the reflection angle of the frequency stabilization spherical mirror can be accurately adjusted, the angle processing error of a laser gyroscope cavity is made up, and the problem that a new angle error may be introduced due to the fact that the angle of an existing clamping type frequency stabilization control mirror cannot be adjusted is solved.

The invention discloses a V-type frequency modulation signal generation method and system, and the method comprises the steps: obtaining a discrete model of a V-type frequency modulation signal, and obtaining a frequency increment and a frequency initial parameter through the first-order difference relation between the frequency and the phase of the discrete signal; taking the frequency increment, the frequency initial parameter and the constant term as positive frequency modulation digital control parameters, constructing a linear increasing sequence based on the frequency increment, obtaining instantaneous frequency values at different moments by sequentially superposing the frequency initial parameter, and superposing the constant term on the instantaneous frequency values at different moments to obtain a phase sequence of the positive frequency modulation slope; negation processing is carried out on the positive frequency modulation digital control parameters, and a phase sequence of a negative frequency modulation slope is obtained through calculation; and according to the sinusoidal waveform, converting the phase sequence into amplitude data, and generating a V-shaped frequency modulation signal. By optimizing parameter configuration logic and simplifying operation, the operation amount of control parameters and the data transmission amount in the signal generation process can be greatly reduced, the calculation efficiency is remarkably improved, and the consumption of calculation resources is reduced.

The invention discloses a low-profile band-pass frequency selective wave-absorbing surface with broadband wave absorption. The low-profile band-pass frequency selective wave-absorbing surface comprises a resistance loss layer, an air layer and a band-pass FSS transmission layer in sequence from top to bottom, the resistance loss layer comprises a first dielectric substrate, a central metal sheet is printed at the center of the upper surface of the first dielectric substrate, an etching groove is etched in the central metal sheet, a parallel LC resonance circuit is formed through the etching groove, the periphery of the central metal sheet is connected with metal bridge arms which are symmetrically distributed in a central rotation mode and extend outwards, and the metal bridge arms are connected with the first dielectric substrate. The tail end of each metal bridge arm is connected with a circular metal sheet which takes the midpoint of the tail end of the metal bridge arm as a circle center, and lumped resistors are loaded on the metal bridge arms; through the single resistance loss layer, loading of the lumped resistor and special slotting of the resistance loss layer, broadband wave absorption with a band-pass window can be realized by using a two-dimensional structure, and the broadband wave absorption device has the characteristics of low profile, easy processing, flexible regulation and control and the like.

The utility model discloses a three-axis drive frequency converter, an air conditioner electric control box and air conditioning equipment, relates to the technical field of power electronics, is used for providing a frequency conversion control function, and provides the three-axis drive frequency converter aiming at the problems caused by the scheme that three split-type frequency converters are adopted for a compressor, a fan and a water pump at present. Three original split-type frequency converters corresponding to a compressor, a fan and a water pump in the air conditioning equipment are achieved through a one-to-one single-shaft frequency conversion module and a one-to-two double-shaft frequency conversion module, and the single-shaft frequency conversion module and the double-shaft frequency conversion module are integrated on the same mainboard. Three motor devices can be simultaneously controlled to operate through one circuit board. According to the scheme, the problem that the overall size is increased due to a split-type frequency converter is solved, connecting wire harnesses between the frequency converters are reduced, the material cost of air conditioning equipment can be controlled, and the overall production efficiency can be improved.

The utility model relates to the technical field of variable-frequency doors, in particular to a novel variable-frequency door lifting inching control and empty and heavy box recognition device which comprises a lifting inching control structure, an empty and heavy box recognition device body and an external connecting wire, the lifting inching control structure is electrically connected with the external connecting wire, and the external connecting wire is electrically connected with a retracting and releasing assembly. The collecting and releasing assembly is rotationally connected to the inner side of the empty and heavy box recognition device body, an electric connection plate assembly is fixedly connected to the inner side of the empty and heavy box recognition device body, and a limiting assembly is fixedly connected to the inner side, close to the upper end of the collecting and releasing assembly, of the empty and heavy box recognition device body. According to the device, the situation that abrasion is increased due to the fact that a circuit is too long and is wound is avoided, potential safety hazards are reduced, meanwhile, adjustment of the circuit in the later maintenance process cannot be affected due to the fact that the length of the circuit is right, and the maintenance convenience of the device is improved.

The application discloses a kind of wide band low insertion loss high selectivity frequency selective surface and application.It includes several unit structures, unit structure includes main structure and longitudinal structure, main structure includes two layers of rotation symmetry, aperture type frequency selective surface screen interval parallel arrangement of the dielectric layer and metal layer, longitudinal structure includes vertical and auxiliary metal strip, vertical metal strip upper end penetrates the through groove of upper aperture type frequency selective surface screen and does not contact electrically connected;Vertical metal strip bottom is equipped with auxiliary metal strip, auxiliary metal strip is pasted on the upper surface of lower aperture type frequency selective surface screen dielectric layer.The application inserts transmission zero between stop band and passband by longitudinal structure, realizes the low loss and high selectivity of passband transmission response under dual polarization, effectively improves the isolation of multi-frequency antenna array, improves the antenna pattern deterioration problem caused by co-aperture antenna coupling, with the characteristics of wide band, high selectivity, low loss, low profile, simple structure.

The utility model discloses a cabinet type frequency converter replacement tool, which relates to the technical field of tools, and comprises a plane steel plate, one side of the plane steel plate is provided with an inclined plane steel plate, four corners of the bottom of the plane steel plate are provided with mounting cylinders, the inner parts of the mounting cylinders are provided with adjusting seats in an inserting manner, the inner walls of the mounting cylinders are provided with internal threads, and the adjusting seats are provided with external threads. And external threads are arranged on the outer walls of the adjusting seats. The beneficial effects are that the plane steel plate and the inclined surface steel plate form a complete slideway steel plate, and the surfaces of the plane steel plate and the inclined surface steel plate are not provided with any groove, so that the frequency converter can smoothly move to the plane steel plate from the cabinet body, then move to the inclined surface steel plate from the plane steel plate, and finally move to the ground from the inclined surface steel plate; according to the utility model, the whole process is free from jamming, the time for replacing the frequency converter is shortened, the working efficiency is improved, the time-saving and labor-saving effects are realized, and the practical applicability is better.

This invention discloses a distributed control-based network-type energy storage frequency regulation control system, comprising: a data acquisition module for acquiring operating data from each network-type energy storage unit and generating network-type energy storage operating data; a frequency regulation demand identification module for extracting frequency deviation and frequency change rate to generate local frequency regulation demand; a neighborhood information interaction module for interacting with operating status and frequency regulation demand to generate neighborhood interaction status; a distributed weight calculation module for generating distributed frequency regulation allocation weights; a frequency regulation power sharing module for generating energy storage frequency regulation power sharing; a state of charge coordination module for generating coordinated energy storage frequency regulation power sharing; a network-type frequency support module for generating network-type frequency support control quantities; and a safety constraint correction module for generating energy storage frequency regulation control results. This invention has the advantages of balanced frequency regulation allocation, stable frequency support, and high operational safety.

The application provides a driving fault feedback method and a feedback system. The method first determines frequency segments corresponding to different fault types; then feedbacks a detected fault level signal for logical processing; evaluates fault priority, changes the fault level signal to a low level according to the priority, changes the low level to a high level after a plurality of counting points, takes the high level as an initial value, and continuously outputs frequency signals corresponding to different fault types; finally collects the frequency signals, counts values between two rising edges, and determines a fault type according to the obtained counting values and the fault type frequency segments. The method uses a single channel to feedback fault information, transfers fault information according to feedback pulse frequency, and different frequency bands represent different faults, so that different fault types can be distinguished. By setting a wide fault frequency band and a frequency interval zone, the influence of interference can be greatly reduced.

The invention discloses a frequency mixing regulation and control method and device based on a four-bridge-arm type frequency mixing solid-state transformer. The method comprises the following steps: respectively calculating modulation signals of four sub-bridge arms in the solid-state transformer; performing quantization processing on the modulation signals of the four sub-bridge arms by using nearest level approximation modulation to generate step waves, and determining the number of basic sub-modules put into use in each sub-bridge arm according to the voltage amplitude of the step waves; in the control period, if the step waves change, the corresponding sub-bridge arms are controlled; in the control period, if the voltage imbalance value is larger than the corresponding threshold value, the N sub-modules in the sub-bridge arm are put into use, and N is the number of the basic sub-modules. According to the technical scheme, control is performed only when step waves change, so that the switching action times of the sub-modules are remarkably reduced, and the switching frequency is reduced; only when the voltage imbalance value is too high, forced sequencing control is carried out on sub-module switches in the sub-bridge arms, the switching frequency is reduced, and the switching loss is reduced.

A communication method comprises: determining, by a first communication device, whether to transmit a first measurement report based on a first condition in response to a first-type frequency point meeting a first reporting condition.

The invention discloses an automatic repair type frequency source and an implementation method thereof, and belongs to the technical field of radar communication and frequency synthesis. In order to solve the problems that after a traditional frequency source breaks down, the maintenance efficiency is low, and the shutdown loss of a system is large, a double-backup hardware architecture of two sets of phase-locked loops and two sets of radio frequency signal conditioning circuits is adopted, intelligent management of power supply and signal paths is achieved through a radio frequency switch network, and the working state of each assembly is collected in real time through a monitoring module; and the FPGA control unit executes an automatic repair action based on a locking detection signal and a level signal fed back by the monitoring module, so as to realize instant diagnosis and seamless switching of a fault. According to the invention, the fault repair time is shortened from several days in the prior art to milliseconds, the zero-shutdown operation of the system is realized, the economic loss of hundreds of thousands of yuan is effectively avoided by increasing the hardware cost of thousands of yuan, and the usability and maintainability of the high-reliability electronic system are remarkably improved.

The invention discloses a multi-scene power system frequency safety index self-adaptive partition reconstruction method, which comprises the following steps: acquiring multi-type frequency modulation resource parameters of a system, and establishing an analytical expression of nonlinear frequency safety index constraints based on a system multi-machine frequency response dynamic model considering multi-type frequency modulation resources; acquiring an original feasible range of system frequency modulation parameters, and sampling to generate an original frequency modulation parameter region and a frequency safety index sample curved surface set in the feasible range of the system frequency modulation parameters; acquiring all sample point subsets on an inertia boundary in the frequency modulation parameter area by traversing sample points meeting a specific equivalent inertia value of the system, acquiring intersection points of frequency safety indexes corresponding to the sample points and constraint limit values of the sample points on an original frequency modulation parameter area boundary, and re-partitioning the original frequency modulation parameter area into a plurality of subareas; and linearizing the linear sub-region which needs to be linearized, outputting a linearization parameter which meets a linear error threshold value requirement, and reconstructing a frequency safety index constraint after partition linearization.

The utility model relates to the field of frequency converters, in particular to a high-sealing vector type frequency converter. The frequency converter comprises: a housing; the positive pressure ventilation structure comprises an air supply structure mounted at the bottom of the shell and heat dissipation holes formed in the top of the shell; the air supply structure comprises an air pipe joint mounted at the bottom of the shell, an external air source communicated with the air pipe joint, and filter cotton mounted at the end part of the air pipe joint; blocking pieces capable of being turned over upwards are arranged at the heat dissipation holes, and the blocking pieces are configured to be turned over when air flow penetrates through the heat dissipation holes to flow upwards and seal the heat dissipation holes when the air flow stops flowing upwards. The high-sealing vector-type frequency converter has two effects of heat dissipation and dust prevention, external dust can be prevented from entering the frequency converter along with airflow, the heat dissipation effect of the frequency converter is ensured, and the service life of the frequency converter is prolonged.

The application relates to a safety and explosion-proof type frequency conversion speed regulation integrated machine, which comprises a motor, a frequency converter, a connecting shell, and a fan, a first heat dissipation channel is formed among the connecting shell, a heat conduction plate and a motor shell of the motor, a first air inlet and a first air outlet are arranged on the first heat dissipation channel, a second air inlet and a second air outlet are arranged on the motor shell of the motor, the second air inlet is communicated with the first heat dissipation channel, and a fan air outlet of the fan is communicated with the first air inlet. The safety and explosion-proof type frequency conversion speed regulation integrated machine can be applied to a working condition environment close to combustible gas, and has the advantages of small volume, light weight and convenient transportation.

The invention relates to an electrochemical energy storage power station response method for peak regulation and frequency modulation and a medium, and belongs to the technical field of energy storage regulation and control. The electrochemical energy storage power station response model comprises an energy storage battery degradation cost model, an energy storage adjustable capacity battery safety margin model, an energy type peak regulation service operation model and a power type frequency modulation service model; obtaining an energy storage power station operation strategy according to the battery degradation cost model and the capability-adjustable battery safety margin model; and optimizing the operation strategy according to the energy type peak regulation service operation model and the power type frequency modulation service model. According to the invention, operation cost reduction and income optimization under peak regulation and frequency modulation cooperative operation are realized, and effective support is provided for improvement of flexibility and economy of a power system.

The utility model provides a knapsack for frequency sweep test and a knapsack-type frequency sweep test device, and relates to the technical field of frequency sweep test, the knapsack for frequency sweep test comprises a knapsack body, straps, a waistband, an instrument waist bag, a bearing support and an antenna support; the number of the straps is two, one ends of the two straps are connected with the top of the backpack support, the other ends of the two straps are connected with the top of the instrument waist bag, the two sides of the instrument waist bag are connected with the lower portions of the two sides of the backpack support through a waistband respectively, and the instrument waist bag is used for containing the frequency sweep instrument. The knapsack body is detachably connected with the bearing bracket; the bottom of the antenna support is detachably connected with the top of the bearing support, and the antenna support is used for fixing a test antenna. According to the technical scheme provided by the utility model, the frequency sweep instrument and the antenna are simultaneously carried through the special backpack, so that the two hands of a tester are liberated, the use convenience of the whole frequency sweep testing device is improved, the testing efficiency is effectively improved, and the burden of the tester is also reduced.

A communication method, a communication device, an apparatus, and a storage medium are provided. The communication method comprises: a terminal device receives configuration information of a network device, the configuration information being used for configuring a first-type frequency unit and / or one or more second-type frequency units.

A frequency converter and a container-type frequency conversion skid. The frequency converter comprises a container body (10), wherein a first mounting area (110) and a second mounting area (120) are formed inside the container body (10), the first mounting area (110) is located below the second mounting area (120), a first opening (130) is formed at a first end side of the container body (10), and the first opening (130) is communicated with the first mounting area (110); a frequency conversion module (300) arranged in the first mounting area (110); a fan module (200) arranged in the second mounting area (120); a mounting frame (700) arranged at a first end side of the first mounting area (110), wherein a second opening (710) is formed in the mounting frame (700), and the first opening (130) is communicated with the second opening (710); a cold conduction module (400) comprising a cold conduction plate (410), wherein the cold conduction plate (410) is arranged on the side of the mounting frame (700) facing away from the first mounting area (110). The cold conduction plate (410) is arranged at an end side of the frequency converter (20), thereby preventing the cold conduction plate (410) from occupying the space in the container, and facilitating maintenance of electrical components.

The application discloses a Ku / Ka dual-frequency shared automatic portable communication antenna and belongs to the technical field of antennas, which comprises a feed source, an antenna reflecting surface, a microwave network, an antenna seat frame, a supporting leg and the like. The application adopts a Ku / Ka integrated feed source, a microwave network and an antenna reflecting surface, and frequency band switching is realized through a dial lever type frequency band switching switch, so that the operation is simple and efficient. The high-precision split antenna surface is adopted, the split surface panels have high consistency, the panel interchanging can be realized, the positioning is realized through a pressing plate, the lock catch is locked, and the rapid assembly can be realized. The antenna seat frame adopts a novel integrated transmission mechanism, the transmission mechanism has the characteristics of small size and light weight, space is left out to realize the integrated design of the antenna seat frame and a terminal, and the antenna appearance design implements the industrial design concept and the hidden cable design, and the modeling is beautiful.

The application discloses a kind of multi-objective mathematical calculation model construction method and application system, it is related to mathematical modeling technical field, including the following steps: S1, real-time data acquisition;S2, data preprocessing;S3, dynamic weight adjustment;S4, model construction and solution.The multi-objective mathematical calculation model construction method and application system, through the dynamic frequency mechanism of basic frequency and trigger type frequency increase, according to the parameter fluctuation characteristics flexible adjustment acquisition strategy, avoid the key fluctuation information missing caused by fixed low-frequency acquisition, reduce the resource waste caused by fixed high-frequency acquisition, different change characteristics parameters can be realized efficient data capture, and rely on the linkage mechanism of real-time data acquisition and dynamic weight adjustment, can quickly respond to parameter change, combined with efficient model solution architecture, substantially shorten the period from parameter change to output optimal decision scheme, effectively avoid the decision lag problem of traditional fixed weight model.

The application discloses an automatic repair type frequency source and an implementation method thereof, and belongs to the technical field of radar communication and frequency synthesis. In view of the problem that the maintenance efficiency is low after the traditional frequency source fails, and the system is stopped and a large loss is caused, the application adopts a double-backup hardware architecture of two groups of phase-locked loops and two groups of radio frequency signal conditioning circuits, intelligently manages power supply and signal paths through a radio frequency switch network, and collects the working states of components in real time by using a monitoring module; an FPGA control unit executes automatic repair actions based on the locking detection signals and level signals fed back by the monitoring module, and realizes instant diagnosis and seamless switching of faults. The application shortens the fault repair time from the days level of the traditional technology to the millisecond level, realizes zero downtime operation of the system, effectively avoids the economic loss of hundreds of thousands of yuan with the increase of the hardware cost of several thousand yuan, and significantly improves the availability and maintainability of the high-reliability electronic system.

The invention discloses a method and device for calculating the maximum output voltage of a two-level voltage type frequency converter, and the method comprises the steps: forming an equilateral triangle according to the straight lines where two basic voltage vectors are located and the vertexes in a sector where a space electrical angle is located, calculating the length of a vertical line perpendicular to the third side of the equilateral triangle from the central point of the space voltage vector distribution diagram; mapping the difference between the working durations of the two basic voltage vectors to the third edge; taking the vertical line as a right-angle side, taking the difference between the working durations of the two basic voltage vectors on the third side as the other right-angle side, calculating the lengths of bevel edges corresponding to the two right-angle sides by adopting a preset optimal gradient method, and taking the lengths of the bevel edges as the maximum output voltage of the frequency converter; according to the optimal gradient method, the hypotenuse of the triangle is calculated by using two right-angle sides through a dichotomy and an error feedback updating mode. The maximum output voltage of the two-level voltage type frequency converter can be quickly and accurately calculated, and the calculation efficiency is improved.

This invention discloses an intelligent control method and system for the construction quality of UHPC wet joints, specifically relating to the field of automatic control technology for construction processes. It addresses the problem of inaccurate control caused by environmental vibration interference in existing wet joint construction. The method involves collecting vibration signals from multiple preset locations on the wet joint structure, extracting first-type frequency domain features related to construction operations and second-type frequency domain features related to environmental disturbances, identifying vibration types based on feature energy distribution and transient characteristics, analyzing the attenuation gradient of energy values ​​with distance when identified as construction vibration to assess structural coupling, evaluating the concentration of the first-type frequency domain features based on structural coupling to assess construction vibration stability, adjusting the control parameters of the vibration equipment, and finally executing the adjusted control parameters to control the vibration operation, thereby achieving intelligent control of the construction quality of wet joints.

The utility model discloses a vector type frequency converter beneficial to moisture-proof and heat dissipation, including the first heat conduction spare of setting in the lower part of IGBT module, the second heat conduction spare of setting in the lower part of rectifier bridge module and the heat dissipation board of case outside, first heat conduction spare, second heat conduction spare and the heat dissipation board all are equipped with the passage for the circulation of coolant, and first heat conduction spare, second heat conduction spare and the heat dissipation board are connected through coolant circulation pipeline, and coolant circulation pipeline circulates and flows between first heat conduction spare, second heat conduction spare and the heat dissipation board, coolant transmits heat to the heat dissipation board outside, effectively avoids IGBT module and rectifier bridge module temperature excessively high, and the heat dissipation window of electric control open -close is arranged on the case, and the air humidity probe is arranged on the outside of case, and the air humidity probe is electrically connected with the heat dissipation window of electric control open -close through control circuit. Air humidity probe opens and closes the heat dissipation window of electric control open -close according to the air humidity of external environment, avoids the water vapor of outside to enter the inside of case and leads to frequency converter to be damped.