950 results about "Single phase" patented technology

The invention belongs to the field of stability analysis of a grid-connected system of a grid-building converter, and particularly relates to a grid-building converter grid-connected resonance risk analysis method considering virtual impedance, which comprises the following steps: S1, establishing a three-phase time domain differential equation and simplifying the equation into a single-phase equivalent time domain model; converting into a harmonic state space model of the main circuit; s2, constructing a harmonic state space model of a control system comprising an active power control loop and a reactive power control loop; s3, introducing a virtual impedance control link, and correcting the voltage amplitude reference phasor output by the reactive power control loop; deriving an expression of a modulation signal disturbance phasor; s4, obtaining a complete frequency domain admittance model YGSC of the network construction converter considering the influence of the virtual impedance; an open loop gain TGFM of the grid converter grid-connected system is constructed; and S5, drawing a Nyquist curve based on TGFM, and carrying out resonance risk determination. According to the method, the interaction dynamic characteristics of the network building converter and the power grid under the influence of the virtual impedance can be accurately represented, and the resonance risk of the grid-connected system is evaluated.

The invention discloses a centralized FA broken line positioning criterion anti-interference method considering noise interference, and the method comprises the steps: collecting the data of each node of a power distribution network line in real time, building a sequence component network model under a single-phase broken line ungrounded fault, carrying out the dynamic threshold analysis of an electrical quantity through employing a sliding time window algorithm, and setting an electrical quantity mutation criterion. And constructing an anti-interference criterion, determining whether to trigger fault positioning or not through the anti-interference criterion when sudden change of electrical quantity occurs, determining a fault section in combination with topology analysis when fault positioning is performed, and controlling upstream and downstream switches to isolate the fault and transfer the fault to a non-fault section. According to the scheme, various noise interferences in the power distribution network are effectively suppressed, the accuracy of fault signal judgment is improved, and the conditions of misjudgment and missed judgment are reduced; secondly, considering different conditions of the power distribution network, performing targeted setting and adjustment on a sequence component network model, an anti-interference criterion threshold value and the like, so that the method can adapt to a complex power distribution network operation environment, and the reliability of fault positioning is improved.

The invention discloses a phase change latent heat slow-release single-phase immersion liquid cooling intelligent temperature control adjusting method and system, and relates to the technical field of electronic equipment heat management. The phase change latent heat slow-release single-phase immersion liquid cooling intelligent temperature control adjusting method comprises the following steps: S1, collecting phase change liquid cooling temperature control data, and preprocessing the phase change liquid cooling temperature control data; s2, evaluating the running state of the server, assigning a thermal response level identifier based on an evaluation result, and constructing a thermal response state data set; s3, evaluating the cooling slow release capability in a temperature control early warning state and a thermal shock state, and generating and executing a self-adaptive cooling adjustment strategy in a grading manner; and S4, after the cooling regulation strategy is executed, the response efficiency of the cooling strategy is evaluated, a cooling strategy optimization instruction is generated, and strategy closed-loop regulation is realized on the basis of monitoring the change trend of an evaluation result in a continuous regulation period. The problem that the chip temperature of an existing liquid cooling system fluctuates abnormally due to cooling capacity response lag in an instantaneous high-load scene is solved.

The invention relates to the technical field of power distribution network fault monitoring and forest fire early warning, and discloses a high-voltage line tree line fault ignition time early warning method and device and a medium, and the method comprises the steps: collecting electrical characteristic data and non-electrical characteristic data in a single-phase tree contact grounding fault process in real time; performing preprocessing and sliding window processing on the electrical characteristic data to screen out a key characteristic set; establishing a thermal-electric coupling model representing the exponential decay relation of the equivalent grounding resistance along with the rise of the tree body temperature; training a plurality of different types of data-driven models based on the key feature set to regressively predict the ignition time countdown; taking prediction results of the plurality of data driving models on the training set as input, and taking real ignition time as a target to train a linear regression model as a fusion device so as to obtain an ignition time countdown early warning model; and according to a final predicted value output by the ignition time countdown early-warning model, determining and outputting an early-warning level and a confidence coefficient. According to the invention, early warning can be realized hundreds of seconds before open fire appears.

An onboard charging system for an electric vehicle includes a charging port configured to receive a single-phase AC power, a power outlet configured to provide the single-phase AC power to one or more external devices, a single-phase inverter connected to the power outlet and configured to provide power splitting functionality, a DC battery selectively coupled to the charging port, a bidirectional inverter configured to convert AC power to DC power and to convert DC power to AC power, the bidirectional inverter is selectively coupled to the battery, an electric motor coupled to the bidirectional inverter and selectively coupled to the charging port, a DC-AC converter selectively coupled to the electric motor and selectively coupled to the power outlet, and a DC-DC converter coupled to the DC-AC converter and selectively coupled to the battery.

The invention relates to a single-phase intelligent electric energy meter, which relates to the technical field of electric meters, and comprises an electric meter body with a wiring area and a data storage area, a communication module detachably mounted in the data storage area, and a wiring terminal group arranged in the wiring area, the first cover plate and the second cover plate respectively cover the data storage area and the wiring area. And the first cover plate and the second cover plate are detachably connected with the electric meter body through the first fixing piece and the second fixing piece respectively. The linkage relation between the first fixing piece and the second fixing piece is established on the structure, so that the second fixing piece is locked when the first cover plate is in the covering state, and the second fixing piece is unlocked after the first cover plate is taken away and rotated to the maximum opening and closing position. According to the structure, a mechanical linkage principle is utilized to restrain a dismounting sequence, and an operator is guided to dismount the communication module and then dismount the wiring terminal group to a certain extent, so that the risk of adverse effects of misoperation on the stability of communication data can be reduced.

The single-phase bidirectional single-stage isolation matrix converter comprises a pre-stage circuit and a post-stage circuit, and the pre-stage circuit comprises an LC filter on the power grid side, a pre-stage single-phase matrix conversion circuit and an LLC resonance circuit with a high-frequency transformer; the post-stage circuit comprises a post-stage conversion circuit and an output filter capacitor; the front-stage single-phase matrix conversion circuit comprises four bidirectional switch assemblies of a full-bridge structure. Each bidirectional switch assembly comprises two unidirectional controllable MOS tubes which are reversely connected in series, one end of each bidirectional switch assembly is connected to an L line or an N line of a power grid, and the other end of each bidirectional switch assembly is connected to the LLC resonance circuit. The rear-stage conversion circuit comprises a bidirectional MOS (Metal Oxide Semiconductor) tube bridge circuit and three high-frequency transformer secondary windings which are in triangular connection or star connection; and two end points of each secondary winding are respectively connected to the upper MOS tube and the lower MOS tube of the corresponding bridge arm and then are connected to output positive and negative ends. The converter has the advantages of high power density, low current harmonic, high power factor and the like, and is small in size, strong in anti-interference capability, wide in buck-boost range, and safe and reliable in commutation.

The invention relates to the technical field of intelligent operation of a power distribution network, in particular to an intelligent three-phase imbalance treatment method, which comprises the following steps of: firstly, acquiring three-phase current, three-phase voltage and electrical characteristic quantity of each single-phase load, and carrying out commutation adaptability evaluation on the load based on a real-time power factor, a current harmonic distortion rate and a load power flow direction; and calculating the three-phase unbalance degree of each power supply branch, identifying an extreme branch with the unbalance degree exceeding the standard, and screening out loads with optimal commutation adaptability parameters to form a candidate load set. And generating a commutation priority sequence for the candidate load through a historical commutation frequency and real-time contribution degree two-factor model. And triggering zero-millisecond seamless commutation under the conditions of meeting a safe voltage threshold and equal voltage time, verifying a switching result after commutation, limiting the number of commutation times of single treatment, and monitoring the three-phase unbalance degree in real time until the three-phase unbalance degree is recovered to a qualified range. According to the invention, the accuracy and safety of the commutation decision can be improved, and the dynamic balance adjustment of the three-phase load is realized.

A transformerless, high efficiency, three-level, high power density, wide input voltage range, single-phase DC / AC inverter is provided. The inverter includes a single DC input power supply, a first semiconductor switch, a second semiconductor switch, a third semiconductor switch, a fourth semiconductor switch, a fifth semiconductor switch, a sixth semiconductor switch, a seventh semiconductor switch, an eighth semiconductor switch, a ninth semiconductor switch, a first inductor, and a second inductor.

The invention provides a UPS (Uninterrupted Power Supply) control method and device, which are used for reducing the power supply cost of a direct current bus. The UPS control method comprises the steps that when it is determined that a bypass module in a UPS works and the UPS has no fault, a first part of power module in the UPS is controlled to work in a harmonic compensation mode, and the UPS comprises the first part of power module and a second part of power module; detecting the bus voltage of each power module in the second part of power modules; an inverter in the target power module is controlled to obtain electric energy from the output end of the bypass module, single-phase rectification processing is conducted on the obtained electric energy, power is supplied to a direct-current bus in the target power module, and the target power module is the power module with the bus voltage smaller than the first set value in the second part of power modules.

The invention relates to a current stress optimization hybrid modulation strategy of a three-phase dual-active bridge converter, which gets rid of a traditional symmetric bridge phase shift modulation strategy, provides a modulation mode of simultaneously switching on and off a b-phase switch tube and a c-phase switch tube in the three-phase dual-active bridge converter, and enables the phase a to be compared with the b-phase switch tube and the c-phase switch tube to have variable bridge internal shift. A modulation strategy of a three-phase dual active bridge converter similar to a DAB triple phase shift modulation mode is formed; meanwhile, mixed modulation is formed with single phase shift modulation of the three-phase dual-active bridge converter, total current stress serves as an optimization target, Pn is obtained through calculation of a PI controller, the voltage transformation ratio M at the moment is calculated, values of respective total current stress under the two kinds of modulation can be obtained, the total current stress under the two kinds of modulation is compared, and the optimal value of the total current stress under the three-phase dual-active bridge converter is obtained. And a modulation mode with the optimal real-time total current stress is selected, so that the total current stress of the converter is optimized under the same transmission power.

An electrical conductor monitoring system for single or multi-phase conductors is described. The monitoring system may be configured to monitor the health of a conduction system based on multi-phase sequences and / or current magnitude and angle vectors of multi-phase or single-phase current. In one example, the monitoring system includes an insulation health monitoring system having an input and output measurement devices, the input measurement device disposed at an input end of the electrical distribution system and structured to measure three-phase input currents, the output measurement device disposed at an output end of the electrical distribution system and structured to measure three-phase output currents; and a monitoring device communicatively coupled to the measurement devices and structured to receive the three-phase input and output currents from the measurement devices and determine a state of the insulation system based on the three-phase input and output currents. Other embodiments are described.

The utility model discloses a bidirectional multi-level power conversion device, a UPS (Uninterrupted Power Supply) and a charging pile, which are used for improving the power level of the power conversion device, reducing the volume of the power conversion device and reducing the cost of the power conversion device. The power conversion device comprises a capacitor branch, a filtering module and a plurality of single-phase Vienna PFC circuits which are in one-to-one correspondence with phase lines of an alternating current power supply; the first end of the capacitor branch is connected with the anode of the direct-current power supply, and the second end is connected with the cathode of the direct-current power supply; two ports of the direct current end of each single-phase Vienna PFC circuit are connected with the first end and the second end of the capacitor branch, and the alternating current end of each single-phase Vienna PFC circuit is connected with the corresponding phase line through the filtering module. Wherein each single-phase Vienna PFC circuit is composed of an inductor and a plurality of switching tubes.

This technology is a process for controlling low voltage microgrids (MGs) with centralized communication, based on the “Power-Based Control” (PBC) technique adapting the same to a modified PBC (MPBC) process. The technology provides the following technical effects: 1) sharing of active power and reactive power proportionally to the capacity of distributed energy resources (DERs) of the MG; 2) power unbalance compensation at the point of common coupling (PCC or PAC in Portuguese); 3) the process can be implemented without knowing the parameters and topology of the power grid; 4) ability to handle the arbitrary connection of inverters in the MG; 5) it makes possible to distinguish between DERs connected to the MG in both types of connection: phase-phase and phase-neutral, wherein single-phase DERs connected arbitrarily between the phases share the amounts of balanced power, while the unbalanced and homopolar powers are steered only to the inverters connected between phase and neutral; 6) it allows the connection of the MG to multiple PCCs and also the operation in isolated mode (“islanded”). The technology is applied in the technical field of equipment and infrastructure for the development of MGs.

The utility model provides a wire cup capable of being electrically controlled to brake and a fishing reel. The wire cup comprises a cylindrical cup body, a stator part, a rotor part, an electric control unit, a single-phase rectifier bridge circuit and a switching device. The stator part and the rotor part are arranged in the cup body, the stator part comprises a first induction coil and a second induction coil, the first end of the first induction coil is connected with the first end of the second induction coil, and the rotor part can coaxially rotate relative to the stator part and comprises a plurality of magnets which are arranged on the inner wall of the cup body at intervals in the circumferential direction; the polarities of the adjacent magnets are opposite; two alternating-current ends of the single-phase rectifier bridge circuit are respectively connected with the second end of the first induction coil and the second end of the second induction coil, and two direct-current ends of the single-phase rectifier bridge circuit are connected with a power supply end of the electric control unit; the enable end of the switching device is connected with the brake signal output end of the electric control unit, and the brake current path is conducted when a brake signal sent by the electric control unit is received.

The utility model discloses a same-slot and same-phase winding structure, a motor stator and a flat wire motor. The same-slot and same-phase winding structure comprises a three-phase winding, a leading-out end and a neutral end, the single-phase winding is an integral pitch winding and comprises a first branch and a second branch, the first branch and the second branch are alternately distributed in the radial direction and fill the same stator groove, and the two branches comprise U-shaped hairpins with the two ends located at the groove bottom and the groove opening of the stator groove and U-shaped hairpins with the two ends crossing adjacent layers and not located at the groove bottom and the groove opening of the stator groove; the two branch leading-out ends are respectively located at the bottom or the notch of the stator slot, and the radial distances between the two branch leading-out ends and the neutral end are the same. According to the utility model, the single-phase winding is arranged to be a winding structure with the same slot and the same phase, so that the insulation breakdown risk is reduced; the shape of the formed unidirectional winding hairpin is uniform, and the hairpin processing complexity is reduced; the positions of the leading-out ends of the first branch and the second branch of the three-phase winding are concentrated to reduce the use of wrapping insulating materials, so that the manufacturing cost is reduced; the hairpin bending parts are the same, so that the torsion distances of the welding ends are the same, and the welding process complexity is reduced.

The utility model discloses a damping single-phase electronic electric energy meter box, which comprises an electric energy meter box module, and the electric energy meter box module comprises a box body frame. The convenient disassembly and assembly module comprises a guide groove formed in the center of the front face of the inner wall of the box body frame, a guide block is slidably arranged in the guide groove, the front face of the guide block is sleeved with a mounting plate, sliding grooves are formed in the two opposite sides of the inner wall of the guide groove, and sliding blocks are fixedly arranged on the upper portions of the two sides of the guide block; the sliding rod extends into the sliding groove and abuts against the lower end; the device further comprises a damping module, the damping module comprises movable grooves symmetrically formed in the ends of the two opposite sides of the inner wall of the box body frame, micro hydraulic dampers are arranged at the rear ends of the inner walls of the movable grooves, one ends of the micro hydraulic dampers are sleeved with movable blocks, and movable plates are fixed to one ends of the multiple movable blocks. The electric energy meter can be conveniently disassembled and assembled at a low position, time and labor are saved, simplicity and convenience are achieved, use is convenient, requirements are met, and the use effect is improved.

This application discloses a method, system, and medium for orderly charging scheduling of electric vehicles based on phase-separate control, relating to the field of smart grid and charging facility management technology. The method includes: determining whether a power reduction trigger condition or a power increase trigger condition has been met based on the real-time single-phase power and real-time total power of a substation; if the power reduction trigger condition is met, a power reduction is performed; the target power of a first controllable device is determined through device shutdown and power reallocation, and a power scheduling command is issued so that the actual power of the first controllable device is the target power; if the power increase trigger condition is met, a power increase is performed; the target power of a second controllable device is determined through device restart and power reallocation, and a power scheduling command is issued so that the actual power of the second controllable device is the target power. This application can complete orderly charging scheduling of electric vehicles based on phase-separate control, improving grid security.

The application discloses a control circuit and a control method of a single-phase alternating current permanent magnet synchronous motor. The control circuit of the single-phase alternating current permanent magnet synchronous motor comprises a power supply module, the power supply module comprises a transformer, a first power supply unit and a second power supply unit, the transformer comprises a first secondary end and a second secondary end, the first power supply unit and the second power supply unit are electrically connected to the first secondary end and the second secondary end, a driving module comprises a first release end, a second release end, a first input end and a second input end, the first input end is electrically connected to the first power supply unit, the second input end is electrically connected to the second power supply unit, and the first release end and the second release end are electrically connected to the first secondary end and the second secondary end. In this way, by electrically connecting the first release end and the second release end of the driving module to the first secondary end and the second secondary end of the transformer, the energy of the counter electromotive force is absorbed or transmitted through the transformer, and potential interference or damage of the counter electromotive force to a reference ground circuit is avoided.

A measuring switch with multiple wiring frames relates to the field of low-voltage electrical appliances, and comprises a shell with a plurality of phase line channels, and a wire inlet terminal and a wire outlet terminal which are respectively arranged at two ends of the phase line channels, the wire outlet terminal comprises a wire separating frame, the wiring surface of the wire separating frame is separated to form at least two wiring channels, and the wire separating frame is arranged on the wiring surface of the wire separating frame; a locking channel is correspondingly arranged in the direction perpendicular to the wiring channel, and the locking channel is communicated with the wiring channel; the plurality of wiring frames are respectively arranged in the wiring channels, the screwing pieces of the wiring frames are movably arranged in the corresponding locking channels, the front end of the first wiring board is provided with a plurality of branch wiring boards, and the branch wiring boards respectively extend into the corresponding wiring frames. A plurality of independent wiring frames are integrated through the wire separating frame, so that the single-phase wire outlet end has the multi-path branching capability, multiple wires do not need to be pressed into one wire through a wire pressing nose, the wire pressing nose is omitted, the cost is reduced, the wiring is faster, and meanwhile, the wiring requirements of different thicknesses can be met.

The utility model discloses a capacitor fixing and mounting structure for soft start of a single-phase asynchronous motor, which comprises a mounting bracket, a capacitor, a grounding piece and a pressing mechanism, and is characterized in that the mounting bracket is provided with a mounting table, and the mounting table is provided with a sleeving hole extending and penetrating along a first direction; the capacitor is sleeved in the sleeving hole along the first direction, the capacitor is provided with a capacitor metal shell and a plurality of capacitor joints, and the periphery of the capacitor metal shell is provided with a limiting part extending outwards; the grounding piece sleeves the periphery of the capacitor metal shell, is clamped between the limiting part and the mounting table, and is provided with a grounding joint; the pressing mechanism is arranged on the installation support and provided with a pressing part, the pressing part and the limiting part are located on the same end side of the sleeving hole, and the pressing part is used for pressing the end of the capacitor in the first direction. And the capacitor and the grounding piece can be effectively prevented from falling off.

The invention relates to the technical field of buck-boost converters, and discloses a phase control circuit and method, and a buck-boost system. According to the phase control circuit provided by the embodiment of the invention, the edge change rate of the phase-cut inductive current is slowed down by processing the phase-cut signal, so that when the double-phase reverse buck-boost converter performs phase cutting based on the phase-cut signal, one single-phase buck-boost converter can enter or exit softly, and the other single-phase buck-boost converter can enter or exit softly. Therefore, the ripple of the load voltage signal at the output end of the dual-phase reverse buck-boost converter is ensured to meet the design requirement, and the load connected with the dual-phase reverse buck-boost converter is prevented from working abnormally.

The utility model discloses a converter system, and relates to the technical field of vehicle engineering. The converter system comprises a converter body formed by cascading a plurality of same basic power subunits, the input end of the converter body is used for being directly connected with a single-phase traction network, and the output end of the converter body is used for independently driving a plurality of traction motors. The output end of the converter body is provided with a three-phase output filter capacitor. According to the converter system, the basic power subunits are cascaded to form the converter main body, so that the current-carrying capability and the voltage endurance capability can be improved; and the output end of the converter main body is provided with a three-phase output filter capacitor, so that when the transformer main body outputs voltage to drive the traction motor, the torque ripple and electromagnetic noise of the traction motor can be reduced.

The invention relates to a universal turnout driving module, a control method, a medium and equipment. The universal turnout driving module comprises a micro-control unit (MCU), a rectifying circuit, a driving mode selection module, a driving direction selection module, a representation acquisition module, a driving and representation selection module and a turnout adapter board. The rectification circuit is used for converting three-phase alternating current into single-phase direct current, the driving mode selection module selects alternating current or direct current power supply according to an MCU instruction, the driving direction selection module selects a driving direction according to MCU control, and the indication acquisition module acquires a turnout position signal. The driving and indication selection module controls connection and disconnection of a driving line and an indication line through the MCU to achieve a driving or indication function, and the turnout adapter board is connected with a point switch and outputs a control signal. The system can support a five-wire system switch machine and a four-wire system switch machine, is compatible with driving and mining separated use scenes, and has obvious advantages.

The application discloses a single-phase full-bridge power module, comprising a substrate, a base island located on a first surface of the substrate, the base island comprising a first base island, a second base island and a third base island, a first power device, a second power device, a third power device and a fourth power device, the first power device and the second power device forming a first half-bridge unit, the third power device and the fourth power device forming a second half-bridge unit, the first half-bridge unit and the second half-bridge unit forming a single-phase full-bridge unit, the first power device and the third power device being located on the first base island, the second power device being located on the second base island, the fourth power device being located on the third base island, and the first base island semi-enclosing the second base island and the third base island. The single-phase full-bridge power module provided by the application adopts a reasonable layout to package power devices, reduces parasitic parameters, and improves the dynamic performance and loss of a circuit.

The application belongs to the technical field of low-voltage metering boxes, and particularly relates to a single-phase multi-meter-position non-metal low-voltage metering box, which comprises a box body and further comprises: a mounting strip arranged in the box body and provided with a supporting long groove; a wire arranging groove arranged in the box body and located directly below the mounting strip; a guide rail square frame arranged on the side of the wire arranging groove close to the mounting strip; a plurality of meter body supporting members movably arranged between the guide rail square frame and the mounting strip; the two ends of the supporting long strip are respectively arranged in the guide long groove and the locking sliding groove, the end of the supporting long strip extending into the locking sliding groove is provided with a locking block, the end of the supporting long strip extending into the sliding guide groove is provided with a threaded block, and the locking block and the threaded block are both provided with screw thread holes matched with screws; the number of electric energy meters in the metering box can be increased or reduced according to needs, so that the universality of the low-voltage metering box is improved.

The application discloses a TN-C-S low-voltage power distribution system single-phase ground fault identification method, and belongs to the technical field of power system fault characteristics and relay protection. The single-phase ground fault identification method effectively solves the inadaptability problem of traditional single residual current protection by collecting residual current and zero sequence current and the fault current approximately separated by the algorithm of the application. The application collects residual current, zero sequence current data and three-phase power supply voltage data respectively, relies on the short-time invariability of the neutral point grounding resistance and the repeated grounding resistance, proposes to separate the fault current by using the residual current and the zero sequence current, then compares the fault current with the setting threshold to identify the single-phase high-resistance ground fault, and obtains the fault phase according to the matching of the phase of the separated fault current and the phase of the power supply voltage, so that the single-phase high-resistance fault identification and phase selection identification are realized.

The present invention relates to a plasma power supply device for improving harmonic distortion under light-load conditions, and a control method, the device comprising: a power supply unit for supplying single-phase or three-phase alternating current power; a boost converter for controlling an input voltage; a bridge circuit, which receives the voltage controlled by the boost converter in order to provide output power; and a control unit for controlling the operation of the bridge circuit to operate in a first mode or a second mode according to load power required in a load electrically connected to the bridge circuit, wherein the control unit fixes a duty ratio of the first mode at a first load power so as to control the output power, controls the duty ratio of the first mode at a second load power, which is lower than the first load power, so as to control the output power, and switches to the second mode at a third load power, which is lower than the second load power, so as to control the bridge circuit.

The embodiment of the invention provides a low-voltage transformer area user phase determination method and device, equipment and a medium. The method comprises the following steps: firstly, acquiring a first power supply radius of a power user in a target low-voltage transformer area and first three-phase voltage data of the power user in a first preset duration; determining a second power supply radius of the at least one three-phase user and third three-phase voltage data corresponding to the at least one single-phase user, and then determining a user proportion value corresponding to a target three-phase user of which the second power supply radius of the at least one three-phase user is greater than a first preset threshold value; and finally, determining the phase of the at least one single-phase user according to the third three-phase voltage data corresponding to the at least one single-phase user, the user proportion value and a second preset threshold. According to the method provided by the invention, the determination of the user phase of the low-voltage transformer area is realized, and the identification efficiency and the identification accuracy of the user phase are improved.

This invention relates to the field of single-phase power regulation technology, and more particularly to a multifunctional single-phase power regulator, comprising: a main circuit module for connecting the power supply and load and setting power regulation devices in series; an internal power supply and voltage regulation module that draws power from the main circuit and performs current limiting, rectification, and voltage regulation; a control and regulation module that generates control signals based on input signals and main circuit parameters under its power supply; a trigger suppression and synchronous start module that prohibits triggering before the power supply is stable or synchronization conditions are met; a protection monitoring module for monitoring main circuit parameters and prohibiting triggering in case of abnormalities; and a heat dissipation and maintenance module with an independent disassembly and assembly structure. In this invention, by drawing power from the main circuit and uniformly supplying power to the control and trigger modules for coordinated operation, control conditions are synchronously established when the main circuit is turned on, thereby improving the problem of false triggering and inconsistent start-up that easily occurs in traditional single-phase power regulators due to asynchronous power supply between the main control and the main circuit.