93 results about "Current loop control" patented technology

The invention belongs to the technical field of new energy, and particularly relates to a fault voltage ride-through optimization method and system for a network construction type energy storage converter. Carrying out positive and negative sequence separation and Clark-Park coordinate transformation on the three-phase power grid voltage and the inversion current, calculating active power and reactive power of the network-forming type energy storage converter, and carrying out power loop control to obtain three-phase reference voltage and angular velocity; performing voltage loop control, and dynamically adjusting a positive sequence active current and a positive sequence reactive current according to whether a low-voltage-crossing indication signal exists or not; performing positive-sequence current loop control and negative-sequence current loop control, and then performing inverse Clark-park conversion to obtain positive-sequence three-phase reference voltage and negative-sequence three-phase reference voltage; and superposing the positive-sequence three-phase reference voltage and the negative-sequence three-phase reference voltage for PWM (Pulse Width Modulation). According to the invention, when the power grid voltage is unbalanced due to a fault, the oscillation of the direct current side voltage and power caused by the negative sequence component is eliminated, and the power angle stability is improved and the fault current is suppressed by dynamically adjusting the related reference value during the fault voltage ride-through period.

The application belongs to the technical field of motor drive control, and discloses a permanent magnet synchronous motor current loop control method based on a predictive nonlinear active disturbance rejection, which comprises the following steps: step 1, establishing a permanent magnet synchronous motor control system model considering time delay; step 2, establishing a current loop extended state observer with time delay compensation; and step 3, designing a nonlinear current feedback control law based on finite time convergence. The application establishes a discrete domain extended model for the current loop of the permanent magnet synchronous motor, and proposes a high-performance nonlinear active disturbance rejection current control method for the permanent magnet synchronous motor. The high-frequency response current controller designed by the application is composed of a predictive extended state observer and a nonlinear current feedback control law, and can solve the problem that the frequency response of the permanent magnet synchronous motor drive is limited due to the digital delay in the motor digital control system and the low-pass filter delay in the current feedback channel, and improve the anti-disturbance performance when the motor parameters change.

The invention discloses a servo driver based on a heterogeneous computing architecture, and relates to the field of servo drive control, and the servo driver comprises a first processing unit which is configured to execute an upper-layer control loop and a real-time communication protocol of a servo system; the second processing unit is a heterogeneous processor integrated with a processing system and programmable logic, the processing system is used for executing system management and man-machine interaction tasks, and the programmable logic is configured to realize lower-layer current loop control, pulse width modulation signal generation and hardware acceleration calculation; and the high-speed parallel data interface is connected with the first processing unit and the second processing unit and is used for realizing bidirectional interaction of the control data and the state data. According to the scheme, through collaborative optimization of a heterogeneous computing architecture and a hardware acceleration mechanism, the comprehensive performance of the servo driver is remarkably improved.

The application discloses an inverter grid-connected current harmonic suppression method and system, collects inverter bridge arm current and grid-connected point voltage, carries out operation on the inverter bridge arm current and the grid-connected point voltage to obtain grid-connected current, carries out harmonic suppression on the grid-connected current through a harmonic suppression ring to obtain harmonic suppression ring output value, obtains feedforward value of the grid-connected point voltage and fundamental wave current loop control output value, takes a negative value of the harmonic suppression ring output value and superimposes the feedforward value of the grid-connected point voltage and the fundamental wave current loop control output value, obtains modulation voltage of the inverter, carries out PWM modulation on components of the modulation voltage to generate a switching signal for driving the grid-connected inverter to work. The application estimates the grid-connected current, suppresses specific harmonics in the grid-connected current, makes the grid-connected current harmonic suppression effect better, adopts feedforward on the grid-connected point voltage, makes the inverter have better dynamic performance and stability under strong grid or weak grid, and reduces the grid-connected current harmonic suppression difficulty.

The application discloses a motor system efficiency improving system, device and vehicle permanent magnet synchronous motor. The motor system efficiency improving system comprises a CAN communication transceiving module, a torque coordination module, a variable frequency control module and a motor control module. The application receives instruction information sent by a vehicle controller through the CAN communication transceiving module, analyzes the instruction information, processes the analyzed instruction information through the torque coordination module, obtains target instruction information, processes the target instruction information through the variable frequency control module, obtains frequency information and current loop control parameter information, switches the motor control mode according to the target instruction information through the motor control module, and improves the motor efficiency according to the frequency information and the current loop control parameter information. The application realizes closed-loop control of the motor according to the current loop control parameter information through the motor control module, and improves the motor efficiency according to the frequency information.

The invention provides an aviation permanent magnet generator power control system and method, and the method comprises the steps: enabling a result obtained after the difference value between a given rotating speed and feedback power from a power calculation module passes through a PI controller to serve as the input of a current loop control signal, and enabling an output value of a modulation ratio weak magnetic module to serve as the input of the current loop control signal, two-phase current sampling is carried out through a phase current detection circuit, a dq rotating coordinate system is obtained through Clarke and Park conversion, a first result is obtained through subtracting an input and a feedback value of a current loop, a second result is obtained through subtracting the input and the feedback value of the current loop, and the first result is output through a current PI controller. And a second result is output through a current PI controller, a sum is obtained through Park inverse transformation, six paths of control signals are output through an SVPWM module to drive an inverter to work, and a generator outputs target power. The method can be used for power control of any aviation permanent magnet power generation control system.

This application discloses a current loop control method, related devices, and a permanent magnet synchronous motor (PMSM), relating to the field of motor control. By feeding forward a disturbance voltage characterizing the voltage change caused by parameter variations in the PMSM, an ideal stator current equation is obtained. The transfer function of the PMSM is obtained by combining the vector expressions of stator voltage and stator current in an orthogonal coordinate system. The first current loop transfer function is determined by combining the first controller transfer function. The coefficient values ​​of each control element are determined by tuning the first current loop transfer function. Then, based on the obtained second controller transfer function and the compensation term for the current loop delay, a control voltage calculation model corresponding to the target coordinate axis is determined. The first control voltage is determined based on the control voltage calculation model and fused with the disturbance voltage to obtain the final control voltage. This achieves high-precision current decoupling control of the PMSM, improving control accuracy and efficiency.

The invention provides a control method and a controller of an uninterruptible power supply (UPS), the control method is used for controlling the UPS to switch from a mains supply mode to a battery mode, the control method comprises voltage loop control and current loop control, the voltage loop control provides a current control signal based on the comparison of a bus voltage sampling value and a bus voltage given value of the UPS, and the current loop control provides a current control signal based on the comparison of the bus voltage sampling value and the bus voltage given value of the UPS. The current loop control provides a PWM control signal for operation of the battery mode based on a comparison of a battery current sampling value and a current given value, and the control method comprises the following steps: in a first control period of the current loop control, determining the current given value based on the current control signal and a battery current calculated value, the battery current calculation value is in direct proportion to the inversion output power of the UPS; and determining the current set value only based on the current control signal in a subsequent control period of the current loop control, the current control signal of each control period in the subsequent control period being directly related to the current set value of the previous control period.

The invention discloses a manipulator cooperative control system and method based on a servo motor, and relates to the technical field of manipulator control, and the method comprises the following steps: injecting a frequency-adjustable reference excitation signal into a servo driver ground wire of each servo shaft in a manipulator, and constructing a coupling observation basic sequence; when reference excitation signal injection is executed, ground wire instantaneous potentials of servo drivers of all servo shafts are synchronously collected in parallel, and a complete multi-shaft potential response matrix is constructed based on a coupling observation basic sequence. According to the method, the frequency-adjustable excitation signal is introduced, sparse cross-correlation and adaptive Kalman filtering are combined, identification and modeling of a cross-axis potential interference path are realized, and servo current loop control parameters are dynamically corrected, so that parasitic current interference is effectively inhibited, synchronism, stability and anti-interference robustness of multi-axis cooperative control are improved, and the method is suitable for large-scale popularization and application. The problems of response lagging and out-of-step of a traditional method are solved.

The application discloses a single-input multi-output modular multi-port power supply and a control method thereof. The power supply comprises an AC-DC conversion module, a first DC conversion module comprising a plurality of parallel first DC conversion units for providing an output in a four-quadrant operation mode, a second DC conversion module comprising a plurality of parallel second DC conversion units for providing an output in a two-quadrant operation mode, and a third DC conversion module comprising a plurality of parallel third DC conversion units for providing an output in a single-quadrant operation mode. The input ends of the first DC conversion module, the second DC conversion module and the third DC conversion module are connected in parallel to a DC bus at the output end of the AC-DC conversion module. The control method performs collaborative optimization of voltage loop control parameters, current loop control parameters and power distribution coefficients by using a multi-objective evolutionary algorithm. The application effectively improves the flexibility, expandability and stability of the multi-port modular power supply.

The invention relates to a frequency converter control method, a frequency converter, a readable storage medium and a program product. The method comprises the following steps: acquiring a power supply phase current under an alpha-beta coordinate system; determining a power supply phase voltage according to the power supply phase current; acquiring a reference voltage and a bus voltage of the output end of the rectification inverter; performing voltage loop control according to the reference voltage and the bus voltage to obtain voltage loop current; performing power control according to the voltage loop current, the power supply phase voltage and the power supply voltage, and determining a reference phase current; the power supply voltage is determined according to the power supply phase voltage; performing current loop control according to the reference phase current and the power supply phase current to obtain a target phase voltage; the target phase voltage is used for adjusting the voltage output by the rectification inverter. By adopting the method, the voltage control is accurate.

The invention provides a control system and an anti-disturbance method of an electromagnetic bearing, a rotor position outer ring is controlled by a non-singular fast terminal sliding mode controller, external disturbance borne by the system is estimated in real time by introducing a non-linear disturbance observer, and an estimation result is fed back to a position controller for compensation; the input of the position controller is the difference value between the given position and the feedback position of the magnetic bearing rotor, and the output value is the reference value of the current loop control current; a stator coil inner ring is controlled by a nonsingular fast terminal sliding mode controller, input values of the controller comprise a current bias value + a current reference value output by a position ring and a current bias value-a current reference value output by the position ring, and an output quantity is a driving PWM signal duty ratio of a magnetic bearing stator coil; driving the PWM signal to be output to the power amplifier; the power amplifier supplies power to the stator coil; the axial thrust load sudden change anti-disturbance capability can be enhanced, it is ensured that when the thrust load suddenly changes, the magnetic bearing maintains stable suspension of the rotor, and anti-disturbance control is achieved.

The application belongs to the technical field of electric power, and provides a DC micro-grid system and a secondary control method of the DC micro-grid. The voltage compensation module, the droop control module, the steady-state current distribution compensation module, the dynamic current distribution compensation module and the voltage and current loop control module of the DC micro-grid system work cooperatively to ensure the accurate distribution of load current among different distributed power generation units, and improve the power quality and robustness of the DC micro-grid. The DC micro-grid system introduces compensation voltage to be used for bus voltage recovery and offsetting the influence of line resistance on the steady-state current distribution accuracy. The voltage and current loop control module adopts a cascaded voltage and current loop control mode to ensure that the output voltage of the distributed power generation unit converter closely tracks the reference output voltage, so as to realize the accurate distribution of load current among the distributed power generation units and improve the power quality of the DC micro-grid.

This invention discloses a control method for an energy storage inverter coupled to a diesel generator, including a harmonic suppression step, a reactive power compensation step, and a bus adjustment step. The harmonic suppression step includes: dynamically adjusting the proportional control parameters of the current loop control based on the diesel generator voltage, and introducing a filtering module in the feedforward signal processing. The reactive power compensation step includes: actively outputting reactive power compensation based on load characteristics to offset the influence of capacitive loads on the diesel generator power factor. The bus adjustment step includes: real-time detection of whether the AC side voltage exhibits characteristics of the diesel generator; if so, adjusting the bus reference voltage value to a safe range close to the overvoltage protection value. This invention's control method for an energy storage inverter coupled to a diesel generator improves the adaptability of the energy storage inverter to different diesel generators.

The application discloses a rectifier current loop control system based on a fractional order phase-locked loop observer, which comprises a rectification module, a phase-locked loop module, a coordinate transformation module, a fractional order phase-locked loop control module and a PWM modulation module; the input end of the rectification module is connected with a three-phase power grid voltage, and the output end outputs a direct current voltage; the input end of the phase-locked loop module is connected with the three-phase power grid voltage, and the output end outputs an electric angle and is connected with the input end of the coordinate transformation module and the input end of the PWM modulation module; the input end of the coordinate transformation module is connected with the output end current of the rectification module, and the output end is connected with the input end of the fractional order phase-locked loop control module; the fractional order phase-locked loop control module is connected with the PWM modulation module; and the PWM modulation module is connected with the rectification module. Compared with a traditional linear extended state observer, the fractional order phase-locked loop observer designed in the application has more obvious effects of suppressing resonance peaks and reducing current harmonic content, and has strong adaptability to parameter changes of the system.

The present application relates to the technical field of double three-phase permanent magnet synchronous motor harmonic current control, and discloses a double three-phase permanent magnet synchronous motor harmonic current control method and device, the present application is through to the motor voltage equation implementation modeling domain conversion and discretization processing, constructs the harmonic current loop controlled object of adaptation digitization control, complex vector current regulator and low pass filter discrete domain model, combines current signal multi-dimension pretreatment and accurate regulation transformation, fully compensates the delay of digital control, effectively offsets the influence of harmonic coupling and speed correlation. Compared with the prior art, the present application avoids the adaptive deviation of continuous domain design and digital control, solves the system instability problem caused by low pass filter delay and discretization error, and ensures that the motor has high harmonic current control precision and fast dynamic response in the full speed range.

The invention discloses a buck-boost topology-based power stabilizing power converter, which comprises a direct-current voltage-stabilized power supply, a battery pack and a control circuit, and is characterized in that a buck-boost two-path circuit is connected in parallel between the direct-current voltage-stabilized power supply and the battery pack and is connected with the control circuit, and the buck-boost two-path circuit is connected with the direct-current voltage-stabilized power supply and the battery pack. The control circuit adopts double closed-loop control or single current loop control of a voltage outer loop and a current inner loop to realize a forward boost discharge control mode or a reverse buck charge control mode of the power converter; according to the power stabilizing power supply converter, the use amount of power devices is reduced, the overall cost and loss of the power stabilizing power supply converter are reduced, the rated working efficiency of the power stabilizing power supply converter is improved, and the power stabilizing power supply converter has a boost and buck control function; and after the voltage of the battery pack reaches a set value, constant-voltage charging is adopted, so that the battery pack is prevented from being overcharged or not fully charged.

The invention discloses a single-input multi-output modular multi-port power supply and a control method thereof. The power supply comprises an alternating current-direct current conversion module; the first direct current conversion module comprises a plurality of first direct current conversion units which are connected in parallel and is used for providing output of a four-quadrant operation mode; the second direct-current conversion module comprises a plurality of second direct-current conversion units which are connected in parallel and is used for providing output of a two-quadrant operation mode; the third direct-current conversion module comprises a plurality of third direct-current conversion units which are connected in parallel and is used for providing output of a single-quadrant operation mode; the input ends of the first DC conversion module, the second DC conversion module and the third DC conversion module are connected in parallel with a DC bus at the output end of the AC-DC conversion module. According to the control method, collaborative optimization of a voltage loop control parameter, a current loop control parameter and a power distribution coefficient is carried out by adopting a multi-objective evolutionary algorithm. The flexibility, the expandability and the stability of the multi-port modular power supply are effectively improved.

The invention relates to a distributed servo motor control architecture and method based on a cloud License. The problem that in the prior art, a servo system cannot achieve balance between real-time performance and flexible subscription is solved. The system comprises an integrated intelligent motor, a motor main body, an encoder, a power conversion module and a current loop control unit are integrated in the integrated intelligent motor, and the current loop control unit executes current closed-loop operation in a first period; the integrated intelligent motor is in communication connection with the edge gateway and executes position loop or speed loop operation in a second period; the edge gateway is in communication connection with the cloud controller through a 6G network interface or a time sensitive network TSN, the cloud controller issues an advanced control algorithm or a control parameter to the edge gateway in a License packet form, and the edge gateway is provided with a local verification module. The method has the advantages of thoroughly getting rid of the network delay constraint, reducing the one-time purchase cost of a user, realizing non-stop when the network is disconnected, and meeting the harsh availability requirement of an industrial field.

The application discloses a kind of time-sharing drive control method and system of double-winding motor, belong to motor drive technical field, method includes: each PWM period is divided into the first time period and the second time period of equal length;In the first time period, main controller executes the time-sharing drive control of main winding;In the second time period, slave controller executes the time-sharing drive control of slave winding.Adopt time-sharing drive mechanism, main winding and slave winding alternate work each occupies half PWM period, main and slave winding are all involved in output, average share work, can make full use of the output capacity of two windings, avoid the waste of the ability of standby winding, while it can avoid local overheating, thermal balance is good;At the same time, adopt time-sharing drive mechanism, main and slave winding asynchronous output, avoid current imbalance problem, without complex current loop control, reduce system cost and control algorithm is simple.

The application discloses a control circuit and a control method of a power factor correction circuit, and relates to the field of power converters.The control circuit comprises a current reference signal generating circuit, a current sampling circuit, a first subtractor, a first calculation unit, a current loop and a control signal generating circuit.The current reference signal generating circuit generates a current reference signal, the current sampling circuit outputs a current sampling signal, the first subtractor generates a first error signal according to the current sampling signal and the current reference signal, the first calculation unit generates a first parameter and a second parameter according to the current reference signal, the current loop generates a current loop control signal according to the first error signal, the first parameter and the second parameter, and the control signal generating circuit generates a driving control signal according to the current loop control signal.The gradual control of the first parameter and the second parameter of the control circuit can overcome the contradiction between ITHD and input current peak oscillation, improve ITHD and avoid the problem of peak oscillation.

A three-level DCDC parallel positive and negative current sharing control method and device and storage medium, the method comprising: each DCDC takes the current average value of the first pole inductor as the target to obtain the current sharing compensation value of the first pole inductor by tracking the current sampling value of the first pole inductor, adds it to the given of the current inner loop, and generates the first driving signal based on the output value of the current inner loop; taking the current sampling value of the first pole inductor as the target to obtain the current error compensation value between the two pole inductors by tracking the current sampling value of the second pole inductor, adding the current error compensation value and the output value of the current inner loop, and generating the second driving signal based on the addition result; in this way, the DCDC driving signal is generated by taking the current inner loop control of the first pole inductor current as the leading role and the current sharing loop control of the second pole inductor current as the auxiliary role, solving the positive and negative pole current imbalance problem in the operation process of multiple DCDCs, and avoiding the oscillation caused by the control conflict of multiple current loop control.

The invention discloses a permanent magnet synchronous motor field-weakening control method based on power regulation, and relates to the technical field of motor field-weakening control. The method comprises the following steps: acquiring three-phase current and performing coordinate system conversion; acquiring an actual rotating speed based on motor rotor position information; establishing a power-current mapping relation; constructing an active power ring and a reactive power ring; starting of a reactive power loop is controlled through a threshold range, alpha-beta-axis current reference given is calculated, dq-axis current reference given is obtained through conversion, and the permanent magnet synchronous motor is driven to operate through current loop control and PWM wave generation. A current reference track is obtained through a power mapping relation, a traditional voltage control loop is omitted, a PI controller is adopted to construct a power control loop, good compatibility and execution efficiency are achieved, and field weakening and position-free cooperative operation can be achieved.

The application provides a redundant current loop control train method, device and electronic equipment, and the method comprises the following steps: when the train needs to be controlled by the polarity, the polarity information output by the train automatic operation system is sent to the current loop by a main channel, and the current information of the current loop is collected by the train automatic operation system, wherein the current loop is used for controlling the train by the polarity; when the current information represents that the current loop is abnormal, the polarity information is forwarded to the train automatic protection system through a backup channel; and the polarity information is transmitted to the train by the train automatic protection system, so that the train is controlled by the polarity according to the polarity information. Through the application, the technical problem that the current loop control train architecture in the prior art cannot take emergency measures when detecting that the current loop is abnormal, is limited to the logic of manual processing, and once a fault occurs, manual intervention is needed, which causes waste of human resources and brings hidden dangers to safe driving.

The application particularly relates to a control method and system of a three-phase rectifier, and belongs to the technical field of power electronic rectifier control. The application determines the maximum amplitude phase voltage of three-phase voltage amplitudes by acquiring the three-phase voltage input of the three-phase rectifier, reconstructs the voltage into two-phase voltage with the same maximum amplitude phase voltage and keeps the phase unchanged under the shaft, converts the reconstructed two-phase voltage under the shaft into three-phase reconstructed voltage, balances and adjusts the three-phase reference current on the alternating current side based on the reconstructed three-phase voltage, obtains the approximately balanced three-phase reference current, improves the voltage imbalance state, carries out current loop control to determine the control signal of the three-phase rectifier and control the three-phase rectifier, makes the direct current side stably output the expected voltage under the input unbalanced phase voltage working condition, and improves the performance and stability of the three-phase rectifier.

The invention discloses a method for suppressing low-frequency secondary ripples of a single-phase UPS (Uninterrupted Power Supply) system adopting an active filter circuit, and relates to the technical field of filter circuits. Comprising the following steps: acquiring voltages at two ends of a support capacitor in an active filter circuit, a filter inductor current and a total output current of a storage battery pack in real time, and processing by a controller to generate a voltage loop control component; superposing the component with the total current in the current inner loop to form a comprehensive reference signal, comparing the comprehensive reference signal with the actual inductive current, and then generating a current loop control component through a current controller; and after carrying out per-unit processing, superposing a minimum boost duty ratio Dmin required by calculation, and carrying out comparison modulation with a carrier signal to generate a PWM (Pulse Width Modulation) driving signal for controlling a switching tube in the bidirectional Buck / Boost circuit. According to the invention, the bidirectional Buck / Boost active filtering is introduced to effectively suppress the low-frequency secondary ripple current of the DC side of the single-phase UPS system. The risk that when the load power changes, especially when the load is heavy, the voltage fluctuation of the supporting capacitor is aggravated, and the voltage valley value is too low, so that the system works abnormally is solved.

The invention relates to the technical field of electric power steering, and provides a rotor zero deviation determination method, a motor current loop control method and electronic equipment. The rotor zero deviation determination method comprises the steps of outputting d-axis current and a target positive rotation speed to a motor, tracking an actual positive rotation speed of a rotor by using a PI controller, and obtaining a first deviation angle of the rotor according to proportional term output and integral term output of the PI controller when the rotor reaches a stable positive rotation speed; d-axis current and the target negative rotating speed are output to the motor, the actual negative rotating speed of the rotor is tracked through the PI controller, and a second deviation angle of the rotor is obtained according to proportional term output and integral term output of the PI controller when the rotor reaches the stable negative rotating speed; and obtaining an actual deviation angle of the rotor according to the first deviation angle and the second deviation angle. The method does not depend on a hardware circuit, the high-precision rotor zero deviation is obtained through the efficient and low-cost software self-adaptive adjustment process, the algorithm accuracy is high, and the robustness is good.

The invention discloses a micro-grid harmonic current distribution method and electronic equipment, and the method comprises the steps: obtaining the terminal voltage and the grid-side current of each micro-source inverter in a micro-grid, and calculating the actual power through conjugate operation; a second-order generalized integrator is adopted to extract a fundamental current component from the grid-side current, harmonic current is obtained, and an effective value is calculated; calculating the residual capacity of each inverter according to the rated capacity and the actual power; calculating a weight coefficient and a global consistency control quantity through a consistency algorithm based on the residual capacity, and further calculating harmonic virtual impedance; the harmonic virtual impedance and the fundamental wave virtual impedance are superposed and then applied to voltage loop and current loop control, and harmonic current is proportionally distributed according to the residual capacity. Reasonable distribution of harmonic current in the new energy high-permeability grid-forming type micro-grid is achieved, overload of the inverter is avoided, the electric energy quality is improved, the implementation scheme is simple, a multi-harmonic sub-resonance controller is not needed, the operand is small, engineering deployment is easy, and the method is suitable for off-grid and grid-connected operation scenes.

The invention discloses a high-speed motor continuous terminal sliding mode current decoupling method based on an adaptive observer, and belongs to the technical field of motor control. The method comprises the following steps: constructing a rapid continuous terminal sliding mode surface based on a hyperbolic tangent function for permanent magnet synchronous motor current loop control so as to improve the convergence speed and suppress buffeting; a linear expansion state observer based on adaptive parameters is designed, and d-axis and q-axis currents and total disturbance are accurately observed in real time; and performing feedforward compensation on the observed disturbance value to a voltage control law derived from the sliding mode surface. The method effectively solves the problems that a traditional control method is slow in convergence, large in buffeting, weak in anti-interference capacity and incomplete in decoupling, and the dynamic response speed, control precision and robustness of the system under parameter change and external disturbance are remarkably improved.

The invention relates to the technical field of switching power supplies, in particular to a programmable driving power supply which comprises a transformer T1, a primary module electrically connected with the primary side of the transformer T1 and a secondary output module electrically connected with the secondary side of the transformer T1. The device further comprises a voltage loop control module, a reference source, a current loop control module and a photoelectric coupler OPT2. The voltage loop control module is externally connected with a voltage editing signal, the voltage loop control module is electrically connected with the secondary output module, the voltage loop control module is electrically connected with the reference source, the voltage loop control module is externally connected with a current editing signal, the current loop control module is electrically connected with the reference source, and the current loop control module is electrically connected with the secondary output module. The voltage loop control module and the current loop control module are electrically connected with the primary module through a photoelectric coupler OPT2; the problem that a driving power supply cannot be externally connected and intervene in adjustment of output current, output voltage and power is solved.