787 results about "Current sharing" patented technology

The invention discloses a storage battery capacity attenuation trend prediction method, and belongs to the technical field of storage battery prediction. By collecting voltage, current and temperature data of each monomer in real time and combining historical capacity attenuation and internal resistance growth data, the method identifies a voltage and capacity difference value, evaluates cyclic stress non-uniform distribution, and determines a current sharing proportion and a load unbalance degree. Identifying an abnormal mode of new battery overload and aged battery deep discharge, constructing a mixing abnormal working condition identification mode, if the unbalance degree exceeds the standard, adaptively adjusting the charging and discharging time and the current switching frequency, establishing a load balance control framework, predicting the capacity attenuation rate and the residual cycle index of each monomer, and determining the capacity matching degree and the life matching degree; finally, a comprehensive residual life estimation value and a credibility interval are generated through fusion; the performance balance of the mixed battery pack is remarkably improved, the overall service life is prolonged, and the method is suitable for real-time monitoring of a battery management system.

The invention discloses a low-output-ripple automatic-current-sharing interleaving buck converter and a control method thereof.The converter comprises a main power circuit and an auxiliary compensation circuit, and the main power circuit adopts two interleaving main branches to achieve voltage conversion and energy transmission; automatic current sharing of the circuit is realized through the integrated network switch module and PWM signal control; the auxiliary compensation circuit adopts a current mirror image compensation principle, and adjusts the magnitude of the compensation current by comparing the difference between the output current of the main power circuit and the reference current, so as to effectively suppress the output current ripple; the control method comprises the steps of output voltage monitoring, PI adjustment, duty ratio modulation and a complementary control mechanism, current ripple phase offset is ensured, and the system stability and efficiency are improved. Compared with the prior art, the method has the advantages that the complexity of a control system is reduced, the working efficiency is improved, the current ripples are effectively eliminated, and the method has relatively high practical value and popularization prospect.

The invention belongs to the technical field of semiconductor device packaging, and discloses a power semiconductor module three-dimensional stacking vertical commutation low-inductance packaging structure. The two vertical commutation structures are stacked and integrated on the same substrate; different from traditional two-dimensional packaging in which all elements are laid on a two-dimensional plane, three-dimensional stacked packaging suitable for power devices is proposed for the first time, and power loops are stacked and integrated; the magnetic fluxes of the stacked power loops are cancelled, so that ultra-low inductance (pH level) integration is realized; under the condition that the areas of the substrates are the same, the capacity of the module is doubled; meanwhile, dynamic current sharing design is considered, and one driving chip simultaneously drives eight GaN chips to realize parallel dynamic current sharing for the first time; the method is suitable for various topological structures including half-bridge structures, full-bridge structures, three-level ANPC structures and the like; the method is suitable for various packaging schemes, including PCB on DBC packaging, DBC substrate welding / sintering packaging and embedded packaging. Taking the packaging of the half-bridge module double-sided parallel PCB on DBC as an example, low-inductance, low-thermal-resistance and high-power-density integration is realized.

The invention discloses a parallel current sharing precision improvement method and system under multiphase heterogenous input. The method comprises the following steps: constructing a current sharing bus signal network; a PI controller is adopted to output a current-sharing adjustment amount VCS to carry out current-sharing loop control, the output amplitude limiting range of the current-sharing loop is set to be 0-+ VCSMAX, and VCSMAX = 2.5% * rated output voltage VOUTNOM; a digital delay compensation technology is added to ensure synchronization of a current-sharing bus network sampling signal and an output current sampling signal; performing moving average filtering on the current-sharing bus network sampling signal and the output current sampling signal after delay compensation by adopting a short-time domain fixed window filtering parameter; a bias error symmetric amplitude limiting mechanism is introduced, a set bias value delta Ihys is subtracted from the original current sharing error, delta Ierrbias = delta Ierr-delta Ihys is used as an effective adjusting signal, and + / -delta Ihys amplitude limiting is applied to delta Ierrbias; an asymmetric integral coefficient adjustment strategy is implemented, when the VCS needs to be increased, a low-speed adjustment coefficient Kup is adopted, when the VCS needs to be reduced, a rapid adjustment coefficient Kdown is adopted, and Kdown is larger than or equal to 2Kup; the steady-state high current sharing precision and the parallel current sharing capability can be realized.

The invention discloses a circuit and a method for realizing current sharing through master-slave parallel connection, and the method is characterized in that a master machine and a plurality of slave machines are connected in parallel, and are respectively connected to a current sharing control bus through an isolation chip, a TTL and differential mutual conversion unit and an information gating switch in sequence, thereby forming a parallel current sharing circuit; comprising a host issuing current reference circuit and a processing circuit after a slave receives a current reference signal from the host. After a plurality of instrument power supplies are connected in parallel, a user sets a master-slave parallel mode on a front panel of the power supplies and selects a master computer, and other computers are slave computers; when a plurality of power supplies work in parallel, the host issues a current reference signal to the current sharing control bus through the current reference generation circuit, and the slave outputs a corresponding current value according to the current reference signal issued by the host. One of a plurality of power supply modules can be randomly selected as a main module, the flexibility is high, the stability is good, and the power supply has the characteristics of simplicity in wiring and control, low transmission loss of control signals, difficulty in interference of the control signals, balanced output control of all the power supply modules and the like.

The invention discloses a control method of an interleaved parallel bidirectional DCDC converter. A circuit of the converter comprises three pairs of MOSFET switch tubes, three inductors and an output capacitor. The phase difference of PWM waves of the three pairs of MOSFET switch tubes is 120 degrees, and the phase difference is used for effectively reducing current ripples through staggered complementation of currents of all phases. Double closed-loop control is adopted, the DSP chip is responsible for current inner loop control, and the FPGA chip is responsible for voltage outer loop and power outer loop control. The current sharing precision is high, through flexible configuration of multiple proportionality coefficients and zero points, input fluctuation and load abrupt change interference can be accurately restrained, oscillation is avoided, stable output is ensured, and when load abrupt change or mode switching is carried out, output can be rapidly adjusted, transition time can be shortened, and overshoot can be reduced. And high dynamic response and strong robustness of the system are realized, so that complex and changeable application requirements are met.

The invention discloses a multi-tube parallel power device phase shift type current sharing and crosstalk suppression drive circuit which is composed of a crosstalk suppression unit, a current balancing unit, a control response unit and a function switching unit. Wherein the crosstalk suppression unit generates a control signal for suppressing the crosstalk voltage of the parallel power device and shields the interference of the current balancing unit; the current balancing unit generates a control signal for balancing the dynamic current of the parallel power device and shields the interference of the crosstalk suppression unit; the control response unit is used for realizing crosstalk active clamping or current active equalization; and the mode switching unit realizes automatic switching of a crosstalk suppression function or a current equalization function according to configuration. Parallel device grid driving signal feedback is introduced, crosstalk voltage active clamping and dynamic current active balancing are achieved through a logic circuit, and the parallel expansibility is high; an exclusive-OR gate is adopted to accurately identify synchronous or asynchronous information of driving signals of the parallel devices, and various different gate sequential modes in parallel application of the hybrid devices can be compatible.

The invention relates to the technical field of packaging, in particular to a double-end power supply and double-face heat dissipation packaged parallel half-bridge power module, which is characterized in that a SiC MOSFET chip and a diode chip are arranged between an upper DBC board and a lower DBC board, the bottom ends of the SiC MOSFET chip and the diode chip are connected with the lower DBC board through solder layers, and the lower DBC board is connected with the lower DBC board through solder layers. The top end of the SiC MOSFET chip and the top end of the diode chip are respectively connected with a conducting strip through a solder layer, and the conducting strip is connected with the upper DBC board through the solder layer. According to the invention, the two DBC boards and the buffer conducting strip realize electrical connection of all parts in the module, so that the whole packaging structure of the module is simplified; two-sided heat dissipation of the SiC MOSFET and the diode chip is realized through the copper-clad layers arranged on the surfaces of the two DBC boards, the problem of heat flow concentration of the SiC chip under the high-frequency working condition is effectively solved, and the problem of'heat-electric stress' coupling of the module under the high-frequency working condition is solved through system coupling current balance and two-sided heat dissipation capability, so that the module has multi-unit self-current-sharing, and the service life of the module is prolonged. The high-frequency switch stress is inhibited and balanced; and the power density is improved.

The invention relates to the field of electrical engineering, and discloses a high-luminous-efficiency LED street lamp based on multi-chip combination and a luminous flux improving method thereof, and the method comprises the steps: obtaining photoelectric parameter data, carrying out the classification modeling of chips, and constructing a light source feature database; self-adaptive parameter extraction is carried out on the light source feature database, a cooperative work model is constructed, the chip load state is adjusted through a current sharing control strategy, and the chip heat distribution change condition is monitored in real time; whether the working state is stable or not is judged based on the heat distribution change condition, and if the working state is stable, stage change data of luminous flux output is recorded, and a chip driving strategy is corrected; according to the corrected chip driving strategy, spatial distribution regulation and control and energy efficiency optimization are carried out on output luminous flux, regulation factors are extracted, a light emitting path and heat dissipation intensity are adjusted, and luminous efficiency balance improvement is carried out; and evaluating the luminous flux output effect based on the luminous efficiency balance improvement result, and generating a working state evaluation report and a luminous flux improvement suggestion.

The invention discloses a parallel double-fracture collaborative breaking structure and method of a vacuum circuit breaker, and belongs to the technical field of circuit breaker structures. The structure comprises a spring operating mechanism, a current sharing mechanism, a transmission mechanism and a double-fracture circuit breaker assembly; the spring operating mechanism is arranged outside a sealed gas box of the gas insulated switchgear, and the spring operating mechanism is connected with the current sharing mechanism and drives the current sharing mechanism to move; the transmission mechanism comprises an upper motion guide rod and a lower motion guide rod, one ends of the upper motion guide rod and the lower motion guide rod are connected with the current sharing mechanism, the other ends are connected with the double-break circuit breaker assembly, and the motion consistency of the transmission mechanism is driven and controlled through the current sharing mechanism; the double-break circuit breaker assembly is connected with the transmission mechanism, and the transmission mechanism drives the double-break circuit breaker assembly to move and is used for switching on and switching off the vacuum circuit breaker switch. According to the invention, the current nonuniformity of the parallel multi-break vacuum circuit breaker in the opening and closing process can be effectively and structurally reduced, and the safety and reliability of power grid operation are improved.

The invention relates to the technical field of power cables, and discloses a parallel power cable current sharing optimization method and device based on a magnetic ring current equalizer, and the method comprises the steps: carrying out the simulation of a three-dimensional finite element model, and determining first simulation impedance; obtaining an equivalent circuit model, determining theoretical impedance according to the equivalent circuit model, and determining current impedance according to the theoretical impedance and the first simulation impedance; obtaining an electromagnetic field coupling model, determining a magnetic ring compensation parameter, and simulating the electromagnetic field coupling model according to the magnetic ring compensation parameter and the current impedance to determine an impedance compensation mapping relation; and determining an impedance compensation sensitivity matrix according to the impedance compensation mapping relation, and setting values of magnetic ring compensation parameters so as to perform current sharing optimization on the parallel power cables. According to the invention, the mapping relation between the magnetic ring compensation parameter and impedance compensation of the magnetic ring current equalizer can be quantified, thereby accurately generating an optimal compensation scheme, greatly improving the reliability of the parallel power cable, and facilitating the realization of power transmission safety.

The invention provides a current sharing method for multiple power supply racks, which can be applied to the technical field of server power supply current sharing. The current sharing method comprises the following steps: a master controller detects the number of first current power supply units in a plurality of first power supply units and a first total current output quantity, receives the number of second current power supply units in a plurality of second power supply units from a slave controller and a second total current output quantity, and determines a current mean value, a current-sharing signal including a current average value is synchronously issued to the master controller and the plurality of slave controllers; the main processor detects a heartbeat signal of the main controller, controls the first switch module to disconnect the electric connection between the main controller and the plurality of first power supply units and controls the second switch module to disconnect the electric connection between the main controller and the fourth switch module under the condition that the heartbeat signal is not detected within a preset time period; and the second switch module is electrically connected with the plurality of first power supply units and the fourth switch module so as to realize the function of the main controller.

The invention provides a current sharing device, a current sharing control method and electronic equipment, and belongs to the technical field of computers, and the current sharing device comprises a current sharing module which is connected with a power supply and a power utilization assembly, and comprises at least two target transmission channels, and the current sharing module is used for distributing corresponding channel transmission current to each target transmission channel based on the input current of the power supply, each target transmission channel is used for transmitting current to the power utilization component transmission channel, and the target transmission channels are mutually independent. According to the current sharing module, the input current can be uniformly distributed to each target transmission channel, uniform receiving and uniform distribution of the current are realized, current overload of a certain transmission channel is avoided, and the overall safety is improved.

The invention relates to an IGBT parallel current sharing control circuit and method for turn-off transient current change rate detection, and the circuit employs a PCB Rogowski coil probe to carry out the non-contact detection of the turn-off current change rate of a parallel device, thereby accurately judging the non-current sharing characteristic of the parallel device. The problem of integrated design of a traditional detection scheme in large-current and high-power-density application is effectively solved; meanwhile, by designing a current change rate peak holding circuit, the holding time of a peak signal is remarkably prolonged, and the performance requirement on the ADC sampling rate is greatly reduced; a reset branch is additionally arranged for the peak holding circuit, and the peak output value in the last period is zeroed in the turn-on transient state by using a driving signal, so that the charge accumulation effect is effectively eliminated, and the sampling precision of the system is guaranteed; the regulation and control part of each parallel branch only needs to be additionally provided with two passive elements including the control switch and the capacitor, current sharing control can be achieved by adjusting the access time of the bypass branch, the structure is simple, cost is low, and good popularization applicability is achieved.

The embodiment of the invention provides a current sharing control method and an AC-DC conversion system, the current sharing control method is applied to a current sharing controller, the current sharing controller is used for controlling the working state of an AC-DC converter, the AC-DC converter comprises at least two rectification units, and the at least two rectification units adopt a combination of a bridge topology structure and an LLC resonant tank; comprising the steps of determining a target adjustment phase according to absolute values of three-phase input voltage instantaneous values of at least two rectification units; according to the current sampling values of the at least two rectification units, a target duty ratio of a target adjustment phase in each rectification unit is determined, and the target duty ratio is used for indicating adjustment of the voltage gain of the LLC resonant tank; and adjusting the duty ratio of the control signal of the switching tube in each rectification unit according to the target duty ratio of the target adjustment phase in each rectification unit. According to the embodiment of the invention, the gain of the LLC is changed by adjusting the pulse width of the switching tube control signal in the rectification unit and adjusting the amplitude distribution of the input voltage of the resonant tank, so that the output current of the LLC is controlled, and the purpose of current sharing is achieved.

An automatic current sharing control method for an interleaved BUCK converter belongs to the technical field of power electronics, and comprises the following steps: step S1, obtaining an output voltage and a given output voltage of a load end of the interleaved BUCK converter; obtaining the current of each phase of inductor; s2, obtaining an average value of the inductive current of each phase, and averaging the average value of the inductive current of each phase as a reference value of a current loop; s3, calculating a duty ratio signal through a current loop; s4, calculating a duty ratio signal through a voltage loop; and S5, superposing the duty ratio signal of the current loop operation of each phase with the duty ratio signal of the voltage loop operation. According to the invention, the inductive current of each phase follows the average inductive current of three phases in real time, high-precision current-sharing control is realized, and the control reliability is improved, so that the output current is controlled at an average level.

The invention relates to the technical field of multi-column lightning arresters, in particular to a multi-column lightning arrester parallel matching method, which comprises the following steps of S1, performing aging screening and energy tolerance testing on zinc oxide resistor discs of the same batch; s2, measuring the direct-current reference voltage Uref of the resistor discs, the leakage current I0 under 0.75 Uref, the impact residual voltage UL under the lightning wave and the operation residual voltage US under the operation wave one by one; s3, screening the resistor discs for three times; and S4, high-low matching is carried out by taking the operation residual voltage US as a main matching basis, so that the operation residual voltage deviation of each column of series resistor disc group is smaller than a first preset value, and the direct current reference voltage numerical value deviation is smaller than a second preset value. The strict screening process ensures the consistency of the performance of the resistor discs, and the reasonable grouping mode makes the electrical performance of each column resistor disc group more balanced, thereby achieving the effect of improving the operating wave endurance capability and the current sharing characteristic of the multi-column lightning arrester, and reducing the probability of faults caused by uneven current distribution of the MOV.

The invention provides a direct-current boost collection converter of an offshore wind power full-direct-current sending-out system, and the converter can quickly suppress residual direct-current fault current, so that quick direct-current fault isolation is realized by utilizing a direct-current switch. And the fault clearing time is obviously shortened from about 500ms to below 14ms, so that rapid system recovery is realized. The working principle of the topology under the conditions of normal operation and direct-current fault is elaborated, and enhanced power equalization control is provided, so that direct-current voltage and current equalization among sub-modules of the topology is realized. In addition, after interleaving control is adopted, the number of direct-current reactors of the topology is remarkably reduced. A simulation result verifies the effectiveness of the hybrid DC / DC converter and the control scheme thereof in the aspects of blocking fault residual current and promoting direct current fault ride-through by using the DCS.

The invention provides a power supply circuit and a dual-plane redundant power supply system, which can be applied to the technical field of power supply current sharing. The current sharing control circuit comprises an output voltage generation module used for converting an output current provided by a power supply circuit to a load into an output voltage; the current-sharing control module is used for generating a current-sharing control voltage for adjusting the reference voltage of the far-end sampling point according to a comparison result obtained by comparing the current sensing voltage with the current-sharing voltage of the current-sharing bus; the feedback voltage generation module is used for generating a feedback voltage according to the far-end feedback voltage, the near-end feedback voltage and the resonant voltage; and the voltage regulation module is used for regulating the reference voltage according to the current sharing control voltage, comparing the feedback voltage with the regulated reference voltage to obtain error voltage, and regulating the output voltage of the power supply circuit according to the error voltage.

The invention discloses a silicon carbide MOSFET parallel current sharing system and method for a pulse power supply, and belongs to the technical field of SiC MOSFET parallel current sharing, the system comprises a main power circuit connected with a plurality of SiC MOSFETs in parallel and an active driving circuit, when the SiC MOSFETs are turned on, a source inductor generates an induced voltage in direct proportion to the current rising rate, and when the SiC MOSFETs are turned on, the active driving circuit drives the main power circuit to rotate; current sharing when a plurality of SiC MOSFETs are connected in parallel is realized through an in-phase amplification circuit used for detecting and amplifying an induced voltage, a differential amplification circuit used for detecting and comparing an induced voltage value, and a proportional current source circuit is controlled to extract a SiC MOSFET gate drive current. By adopting the method, the unbalanced current can be suppressed, the balance of the current flowing through each branch of the parallel SiC MOSFETs is ensured, the SiC MOSFET device in the high-voltage pulse power supply is effectively protected, and the working reliability of the circuit is improved.

The invention discloses a multiphase dynamic scheduling adaptive conduction time control Buck converter based on phase interpolation. The converter comprises a self-adaptive turn-on time control module, a phase interpolation control module and a dynamic phase scheduling module, the number of working phases can be dynamically adjusted according to load current changes, a multi-phase clock signal is generated through a phase interpolation method, and high-precision multi-phase current-sharing control is achieved. According to the invention, the output ripple of the system is reduced, the bandwidth and dynamic response performance of the system are improved, the energy efficiency under a light-load working condition is remarkably improved, and the method is suitable for a high-performance chip power supply system.

The invention belongs to a DC-DC boost conversion technology, and discloses an ultrahigh-gain photovoltaic converter for a high-voltage charging system. According to the ultra-high gain photovoltaic converter, a boost unit is additionally arranged in a traditional two-phase interleaving Boost converter, the first end of the boost unit is connected with the midpoint of one bridge arm of the traditional two-phase interleaving Boost converter, and the second end of the boost unit is connected between an intermediate capacitor and an output diode. The ultra-high gain photovoltaic converter provided by the invention can realize more than 20 times of boost under the condition of a relatively small duty ratio, and has the advantages of automatic current sharing of an input inductor, small input current ripple, and small voltage stress of a switching tube and a diode.

The invention relates to the technical field of display, and discloses an electronic paper display device and a driving method thereof.The electronic paper display device comprises a co-stage electrode module which is arranged on the color film substrate side of an electronic paper module and comprises N independent electrode blocks forming a whole-surface co-stage electrode, the area or resistance value of each independent electrode block is equal, and N is larger than or equal to 2; the current sharing circuit module is used for dynamically adjusting the charging and discharging current of each independent electrode block according to the dynamic adjusting instruction and controlling the current difference of each branch within a preset fluctuation range; the driving control module is used for receiving the balanced current signal output by the current sharing circuit module and sending a dynamic adjusting instruction to the current sharing circuit module through a control signal line; and the driving control module is also used for outputting charging and discharging pulses to each independent electrode block according to a preset time-sharing sequence. According to the device and the driving method thereof, the charging and discharging current difference is reduced, and the reliability of the electronic paper in a high-temperature environment is improved.

The present invention provides a dynamic current-sharing technology based on series capacitor charge balancing and a three-phase series capacitor Buck converter device thereof, belonging to the field of power electronics. This control method ensures that the three-phase series capacitor Buck converter maintains good steady-state accuracy while rapidly responding to sudden changes in load current. This control method simplifies and solves the problem of ensuring that all state variables reach new steady-state values ​​simultaneously at the end of a transient process when implementing charge balancing control in a three-phase series capacitor Buck converter. This control method offers the advantages of a constant switching frequency, independence from converter circuit parameters, zero steady-state error, and rapid load transient response.

The invention provides a current sharing control method and an AC-DC conversion system. The method comprises the steps that the method is applied to a current sharing controller, the current sharing controller is used for controlling the working state of an AC-DC converter, the AC-DC converter comprises at least two rectification units, and the at least two rectification units adopt the combination of a bridge topology structure and an LLC resonant tank; the method comprises the following steps: acquiring current sampling values of at least two rectification units; according to the current sampling values of the at least two rectification units, a target phase shift angle of each rectification unit is determined, and the target phase shift angle is used for indicating the duration when the input voltage of the LLC resonant tank is in a 0-level state; and according to the target phase shift angle of each rectification unit, controlling a control signal of a target switch tube in the bridge topology structure of each rectification unit to perform phase shift. According to the embodiment of the invention, the input voltage of the LLC resonant tank is 0 level by adjusting the phase shift angle of the switching tube in the rectification unit, so that the output current of each rectification unit is controlled, and the effect of current sharing of the outputs of the plurality of rectification units is achieved.

The invention aims to provide a lithium iron phosphate battery pack parallel current sharing control method and system, and aims to solve the problem of non-uniform current distribution caused by dynamic change of internal resistance of lithium iron phosphate batteries in the prior art, and the technical problems that a traditional PI controller is slow in response speed, and current impact and voltage fluctuation are easily generated during load sudden change. According to the technical scheme provided by the invention, by establishing a virtual impedance adaptive adjustment mechanism based on depth model predictive control and combining with the adaptive PID controller optimized by reinforcement learning, accurate balance control on the current of each parallel battery pack is realized, and meanwhile, the method has fault detection and reconstruction capabilities and ensures stable operation of the system under various working conditions.

The invention discloses an active current sharing circuit and a control method thereof. The active current sharing circuit comprises a signal processing circuit, a driving circuit and a grid voltage adjusting circuit. The control method corresponds to the active current sharing circuit. According to the application, the switching speed of the power device is adjusted through the auxiliary driving current applying circuit, and the dynamic current balance degree of the parallel power device can be effectively improved; through a method of connecting a high-precision resistor in series with a source electrode loop of the power device, simple and accurate measurement of the current of the power device can be realized, and an analog current signal is converted into a pulse signal containing current information through a hardware circuit; the auxiliary driving current and the auxiliary driving current applying circuit grid voltage are calculated through the active current sharing control algorithm, dynamic current balancing of the parallel power devices can be achieved in a short switching period, the control method is simple, the response speed is high, and the method is not affected by line transmission delay.

The invention belongs to the field of power electronic technology and new energy grid-connected control, and particularly relates to a cooperative control system and method for parallel operation of multiple new energy inverters. The method comprises the following steps: firstly, establishing a small signal model of an inverter parallel system, and analyzing dynamic characteristics of the system under power disturbance; secondly, realizing power decoupling and current sharing control based on a frequency-power droop characteristic; furthermore, coordinated operation of multiple energy sources such as photovoltaic energy and energy storage is realized by monitoring the phase of the direct-current bus voltage and the alternating-current side voltage in real time; the method has high engineering applicability, and high-speed real-time communication between parallel units is not needed; the virtual impedance parameters Rv and Lv have clear physical significance and are easy to preliminarily set according to line parameters; the calculation of the dynamic matching self-adjusting module is linear operation, the requirement for the computing power of a processor is low, and integration and implementation on an existing inverter control platform are facilitated.

The invention relates to the field, and discloses a parallel power supply efficiency optimization method and system, and the method comprises the steps: collecting the output current of each power supply module in real time through a current sensor of each power supply module, and collecting the total output current of a parallel power supply system, and the input voltage and output voltage of each power supply module; calculating a current sharing error of each power supply module, and adjusting a proportionality coefficient, an integral coefficient and a differential coefficient of a fuzzy PID controller through a fuzzy inference rule; the voltage regulator is used for regulating the power supply module through the control signal; calculating the efficiency of each power supply module according to the input voltage, the output voltage and the output current of each power supply module, and determining the optimal working point of each power supply module and adjusting the input power of each power supply module according to the efficiency and the load condition of each power supply module so as to complete the efficiency optimization of the whole parallel power supply; according to the invention, the working state of the power supply module can be adjusted in real time under different working conditions, and the method has high adaptability and stability.

The invention discloses a power supply modular combination method and system based on a standardized interface. The method comprises the following steps: step 1, collecting data through a sensor; 2, the central control hub fuses data and establishes a four-dimensional collaborative model; 3, the MOSFET driving circuit carries out adjustment according to a control instruction of the central control hub; and 4, the AI prediction current sharing module predicts the load change trend of the current power supply system and the performance degradation condition of each module through a built-in machine learning model, and dynamically adjusts the current distribution of each module based on the prediction result in combination with a target current value in an instruction, thereby realizing the current distribution of the power supply system. The system comprises a central control hub, a sensor unit, an AI prediction current sharing module and an MOSFET drive circuit. The method has the advantages that dynamic impedance matching and current sharing control closed loop are achieved, AI prediction current sharing is achieved through a machine learning model, output impedance and current distribution of a power module are accurately controlled, load changes are dynamically adapted, and current sharing precision and system stability are improved.