103results about How to "Small ripple" patented technology

The invention relates to an LED light source brightness homogenization control method, device and equipment. The method comprises the following steps: acquiring driving current, PWM duty ratio and light intensity signals of each LED unit in an LED array, and establishing an LED characteristic data set; carrying out working state feature extraction to obtain LED working state data, and inputting the LED working state data into an LED brightness prediction model to carry out light intensity value prediction to obtain a predicted light intensity value; performing spectral analysis and resampling calculation on the predicted light intensity value and the actually measured light intensity value to obtain a state judgment result of the LED unit; dividing the LED array into a plurality of driving groups, and performing current sharing control on each driving group through energy adjustment of an energy storage capacitor to obtain an LED driving current parameter; and performing compensation region division on the LED array to obtain a plurality of compensation regions, and performing calculation through a BSA algorithm to obtain a brightness homogenization compensation parameter of each compensation region. According to the invention, the overall display quality and operation reliability of the LED array are improved.

The invention provides a high-power high-reliability voltage retainer used for an automobile starting and stopping system. The high-power high-reliability voltage retainer is higher in power and reliability and smaller in size and ripple. The high-power high-reliability voltage retainer comprises a through circuit module (1), a booster circuit module (2), a reversed polarity circuit module (3), a CAN transceiver (4), a CPU (5), a DSP (digital signal processor) (6) and a battery. A battery input port and a battery output port are formed in the through circuit module (1), a battery input port and a battery output port are formed in the booster circuit module (2), and the reversed polarity circuit module (3) is electrically connected with the booster circuit module (2); the CAN transceiver (4), the CPU (5) and the DSP (6) are sequentially and electrically connected; the CPU (5) is electrically connected with the through circuit module (1), and the DSP (6) is electrically connected with the through circuit module (1); the DSP (6) is electrically connected with the booster circuit module (2).

The invention relates to the technical field of electronic circuits, and discloses a step-down switching converter group and a converter chip in a fixed on-time mode. The converter group comprises N step-down switching converters which are connected in parallel, wherein each converter comprises a main circuit; the output end of the trigger is connected with the grid electrodes of the upper and lower power tubes of the main circuit; the clock input ends of the first phase shift circuit and the second phase shift circuit are respectively connected with the S end and the R end of the trigger, and the phase shift angle of the phase shift circuit is adjusted to 360 degrees / N. The first converter further comprises a pulse modulation control circuit, the first input end and the second input end of the pulse modulation control circuit are respectively connected with the output end and the feedback point of the main circuit, and the output end is connected with the S end; and the input end and the output end of the timing circuit are respectively connected with the output end and the R end of the trigger, and the timing circuit is used for controlling the fixed conduction time of the upper power tube. Multi-phase operation is carried out through multiple phases, enough load current needed by engineering application can be provided, inductive current ripples are offset, and output voltage ripples are smaller.

The embodiment of the invention relates to the technical field of electric power, in particular to a converter control circuit, a converter and a charging pile. The converter control circuit and the converter comprise the coupling unit, the power conversion unit, the bus unit and the control unit, one path of input of alternating current is converted into two paths or multiple paths of output by additionally arranging the coupling unit, in the multiple paths of output, current is isolated and equally divided, and the output current of the power conversion unit is improved. Meanwhile, the internal structure of the coupling unit suppresses the circulating current in the converter, and the circulating current loss in the power conversion unit is reduced. Furthermore, the power conversion unit is provided with a plurality of T-shaped three-level inversion units, so that a multi-level technology is realized, multi-voltage level is provided, and multi-level output can remarkably reduce harmonic content of output voltage and current, reduce current ripples and improve electric energy quality.

The invention discloses a peak current and valley current controlled three-mode buck-boost converter, which comprises a power level circuit, an error amplifier, a slope compensation module, a current sampling module, a PWM (Pulse Width Modulation) comparator, a mode control module and a switching control module, and is characterized in that the power level circuit obtains an output voltage according to an input voltage and outputs a sampling voltage; the error amplifier outputs a control signal according to a comparison result of the sampling voltage and the reference voltage; the mode control module outputs different enable signals according to the states of the input voltage and the output voltage; the slope compensation module outputs different compensation voltages when the converter is in different modes; the current sampling module collects the voltage of peak current or valley current according to different modes; the PWM comparator generates a PWM control signal; the switching control module generates a driving signal according to the PWM control signal and different enable signals so as to switch different modes. The mode switching efficiency can be improved, the duty ratio can be reduced, and then output voltage ripples are reduced.

The invention discloses a dual-channel bidirectional DC / DC power supply module capable of realizing multiphase interleaved parallel connection, and belongs to the field of power supply management. The dual-channel bidirectional DC / DC power supply module comprises a dual-channel bidirectional DC / DC controller, a switch tube, an energy storage inductor, an energy storage capacitor, a sampling resistor and a peripheral auxiliary resistor capacitor, in addition, two channel high-voltage ports, two channel low-voltage ports, two channel enabling ports, a direction control port, a current configuration port, a clock output port, a clock input port and a multi-phase operation phase configuration port are arranged. Two-channel bidirectional energy flow can be realized by using four switching tubes, phase configuration can be performed on a multi-power module system to realize multi-phase interleaving parallel operation, output voltage ripples are reduced, output power is improved, single-channel current can be configured through a current configuration port, and automatic current sharing of multi-phase interleaving parallel operation is realized. The size of a power system is reduced, complexity and cost of a power control system are reduced, and power supply reliability is improved.

The invention discloses a multi-channel symmetrical CLLC topological structure and a power balance control method thereof, and the structure comprises a multi-channel symmetrical CLLC converter main circuit loop, a high-precision sampling module, a phase shift angle controller module, an input capacitor, an output capacitor and an equivalent load. And more efficient electric energy conversion and power management control are realized. According to the power balance control method, phase shift control is carried out on a secondary side switching tube control signal of a power loop through a fundamental wave analysis method, a forward gain formula under the control method is derived, and output gain regulation and control are carried out on converters with power errors in the multi-path symmetrical CLLC converters. And thus, the power balance control among the multi-path symmetrical CLLC converters is realized.

According to the optical fiber laser constant-current driving circuit and the optical fiber laser, through the combined design of the front-stage BUCK voltage reduction module and the rear-stage linear constant-current control module, the working efficiency of a driving power supply can be effectively improved, and ripples in output current can be remarkably reduced. The preceding stage BUCK voltage reduction module realizes efficient voltage reduction through switch control, ensures voltage stability, and reduces energy loss at the same time. And the backward-stage linear constant-current control module keeps the constancy of the current by accurately adjusting the output current, so that the current ripple is further reduced, and the high requirement of the fiber laser on constant-current driving is met. The design ensures that the circuit outputs stable and low-ripple constant current while efficiently converting voltage, and the performance and reliability of the fiber laser driving power supply are greatly improved.

The invention relates to the technical field of three-phase three-level NPC converter control, in particular to a three-level converter full control set model prediction control method, which comprises the following steps: constructing a first prediction model of a three-level converter based on an electrical physical quantity; equally dividing each control period into n identical state intervals to form a full control set; converting the full control set after the redundant vector is removed into an alpha-beta coordinate system; obtaining a second prediction model under the alpha-beta coordinate system under the action of the full control set; constructing a midpoint potential difference prediction model; establishing a cost function by using the two prediction models; and carrying out hierarchical optimization on the cost function, removing redundant vectors from the full control set, carrying out cost function calculation, and selecting a state vector which enables the cost function to be minimum from the full control set as an optimal vector of a corresponding control period. According to the three-level converter neutral-point potential balancing method, a hierarchical optimization method is utilized, the neutral-point potential balancing problem of the three-level converter is solved, meanwhile, the tedious weight factor design step is eliminated, and the calculation burden is reduced.

The invention provides a novel high-power low-ripple-output hydrogen production converter and a control method. The novel high-power low-ripple-output hydrogen production converter comprises a six-pulse conversion unit, a filter circuit and a three-phase stacked interleaved Buck circuit. The six-pulse commutation unit is connected in series with the filter circuit, then is connected in series with the three-phase stacked interleaved parallel Buck circuit 3, and finally is connected with a load. And the direct-current voltage of the converter is changed by controlling the phase of the trigger pulse of the thyristor valve so as to realize six-pulse direct-current power transmission. The main branch of the three-phase stacked interleaved parallel auxiliary branch is used for realizing power transmission, and the auxiliary branch is used for eliminating output current ripples. A voltage-current double closed-loop control strategy can ensure that each phase of the main branch realizes a good current sharing effect; alternating current component complementation and ripple complementation of the current IAX and the current IdcMain can be achieved by controlling the auxiliary branch switching tubes SAX1 and SAX2, then zero ripple of the output current Idco of the converter is achieved, and control over the auxiliary branch is completed. According to the invention, high-power low-current ripple output can be realized in a low-voltage high-current scene.

The invention relates to the technical field of electronic power transmission, and provides a power conversion circuit and a power supply system, and the power conversion circuit comprises a transformer which comprises a primary coil and a secondary coil; the primary side interface is used for accessing excitation current; the transformer is configured in the mode that when excitation current is connected to the primary side coil, the secondary side coil generates initial induction current; the secondary side interface is used for outputting induced current; the control unit is connected with the primary coil and the primary interface; the control unit is configured to control the primary side coil to access the excitation current from the primary side interface based on the first control signal; the output unit is connected with a secondary interface of the secondary coil; the output unit is configured to output induced current to the secondary side interface according to the initial induced current, and the induced current is continuous current; the embodiment of the invention is used for reducing the ripple of the output current of the power factor correction circuit (PFC).

The embodiment of the invention provides a boost power supply device, a power amplification device, a signal processing system, a power supply control method and electronic equipment. The boost power supply device comprises: a boost power supply unit for supplying power to a power amplifier according to boost power supply parameters, the boost power supply parameters at least comprising a power supply output voltage and a switching clock frequency; and the monitoring unit is electrically connected with the boosting power supply unit, detects the current amplitude of an input signal of the power amplifier, and dynamically adjusts a boosting power supply parameter corresponding to the current amplitude according to the power supply output voltage and the positive correlation between the switching clock frequency and the current amplitude. And the adjusted boost power supply parameters are provided for the boost power supply unit.

The invention relates to a band-gap reference voltage circuit based on channel length modulation effect compensation. The circuit comprises a Zener voltage stabilization source module which is used for carrying out preliminary step-down on external input voltage to generate primary reference voltage; the linear voltage stabilization source module is coupled to the Zener voltage stabilization source module and is used for generating a linear voltage stabilization source; the first-order band-gap reference circuit module is coupled to the linear voltage stabilization source module and is used for generating a first current subjected to first-order temperature compensation; the lambda modulation effect high-order compensation circuit module is respectively coupled to the Zener voltage stabilization source module and the linear voltage stabilization source module, and the lambda modulation effect high-order compensation circuit module generates a second current with a high-order nonlinear temperature coefficient through a channel length modulation effect; and the starting circuit module is used for providing starting voltage and driving current in the power-on process of the band-gap reference voltage circuit. According to the invention, the reference voltage with an ultralow temperature coefficient can be realized.

The present invention discloses a hybrid mode charging circuit, system and charging method. The hybrid mode charging circuit includes a power conversion module and an output module, which is compatible with non-paired adapters and paired adapters, and can realize pre-charging / constant current charging / constant voltage charging. When working in different working modes, all or part of the switch tubes in the power conversion module are reused for power conversion, and when working in the second working mode, two channels work in the same phase, which can save devices, save costs, reduce solution area, facilitate integration, and maintain high efficiency. When working in the first working mode, each switch branch works in a staggered phase to reduce ripple and improve efficiency.

The application discloses an embedded voltage-stabilized heat-dissipation PCB structure with a thermoelectricity synergic regulation layer and a preparation method thereof. The structure comprises at least one PCB inner layer and a chip power supply pad arranged on the inner layer, and a ring-shaped or C-shaped thermoelectric material pattern (ZT>0.5 at room temperature) is embedded in a region corresponding to the chip power supply pad directly below the inner layer. A first end of the thermoelectric material pattern is electrically connected to a power supply layer, and a second end is electrically connected to a grounding layer or a heat-dissipation through hole. The application utilizes the temperature difference during the operation of a chip to drive the thermoelectric material to generate a reverse electromotive force to inhibit power supply ripple, and simultaneously utilizes the Peltier effect to actively pump heat, so that the inner layer is integrated with voltage stabilization and heat dissipation. The power supply ripple can be reduced by 25% to 42% and the surface temperature of the chip can be reduced by 11 DEG C to 14 DEG C by using the PCB structure. The application directly integrates the thermoelectric function in the PCB inner layer, does not occupy the surface layer area, and is suitable for the packaging substrate of high-performance computing chips.

The application relates to the technical field of LED circuit, in particular to a lamp color adjusting circuit with a thyristor light modulation module, which comprises a rectifier circuit, a multi-grade dial code color adjusting circuit, a frequency flash removing circuit, a thyristor current discharge circuit and a constant current light modulation circuit. The rectifier circuit converts an alternating current power supply into a direct current voltage to supply power to a circuit system. The multi-grade dial code color adjusting circuit adjusts the current distribution of LED lamp beads through a dial code switch and a second group of resistors, generates a color adjusting signal, carries out low-pass filtering and dynamic compensation on the color adjusting signal, and outputs a pure control signal to the thyristor current discharge circuit. The thyristor current discharge circuit adjusts a current path according to the control signal to provide a smooth and adaptive power supply for the constant current light modulation circuit. The constant current light modulation circuit realizes constant current output. The design significantly reduces the hardware cost and the complexity of the circuit system, effectively suppresses electromagnetic interference in combination with the low-frequency modulation characteristics of the thyristor, and realizes the balance between light modulation precision and the stability of the circuit system.

The present invention provides an adaptive regulation method, system and storage medium of a DCDC converter. Firstly, the output voltage is corrected by taking the first current information and the first temperature information as interference coefficients to obtain the voltage closed-loop regulation compensation information; secondly, the voltage closed-loop regulation parameter information is determined according to the voltage closed-loop regulation compensation information to obtain the voltage closed-loop output information, and the current closed-loop regulation compensation information is calculated in combination with the second current information; then, the current closed-loop regulation parameter information is determined according to the current closed-loop regulation compensation information to obtain the current closed-loop output information; finally, the voltage output compensation information is determined according to the first voltage information and the second voltage information, and the voltage output regulation amount is calculated in combination with the current closed-loop output information to adjust the output voltage value; the effects of improving the control output accuracy, the dynamic response speed and reducing the ripple of the output voltage are achieved.

The present invention discloses a waveguide coupling transmission structure of D band, including two coupler chips, which are connected by dielectric waveguides; each of the coupler chips includes a coupler body, a coupler feeder and a GSG pad; the coupler body includes a coupler bottom plate, a wedge-shaped waveguide top plate and a mode converter top plate; the mode converter top plate is rectangular, and the wedge-shaped waveguide top plate is a wedge-shaped plate with a gradually narrowing width from near to far; a first metal via array is arranged between the two side edges of the mode converter top plate and the coupler bottom plate, thereby forming a mode converter of the coupler body; a second metal via array is arranged between the two side edges of the wedge-shaped waveguide top plate and the coupler bottom plate, thereby forming a wedge-shaped waveguide of the coupler body. The present invention uses two couplers and dielectric waveguides to complete the design of the signal transmission structure, which increases the working bandwidth and reduces the in-band ripple within the working bandwidth.

The present invention discloses a high-stability, low-ripple high-voltage DC converter. The high-voltage DC converter includes a full-bridge inverter circuit, a resonant filter circuit, a transformer, and a voltage doubler rectifier circuit connected in sequence: wherein the voltage doubler rectifier circuit is formed by cascading a plurality of voltage doubler modules; the output ends of a plurality of the voltage doubler modules are connected in series to form a high-voltage DC output; each of the voltage doubler modules is formed by connecting a plurality of voltage doubler units in parallel and output in series and then connecting them in parallel with a bus capacitor; all bus capacitors are connected in series in sequence and then connected to the load. The voltage doubler rectifier circuit in the scheme of the present invention reduces the average current value and voltage variation on the capacitor and reduces the output ripple without increasing the device voltage level; at the same time, it reduces the total output voltage variation when the load changes, reduces the voltage regulation range of the resonant cavity, and improves the output voltage stability.

The invention discloses an integrated modulation method and system for a parallel ANPC three-level inverter, and the method comprises the steps: carrying out the modeling of a common-mode voltage of a parallel ANPC three-level inverter system based on a five-level vector space, and selecting a parallel voltage vector which is zero in the common-mode voltage as a system voltage vector of a synthetic reference voltage vector; re-dividing six sectors through the system voltage vector, and judging the action time of the system voltage vector and a parallel system switch sequence according to the sectors; converting the five-level switch sequence generated by the parallel system into a three-level switch sequence and sending the three-level switch sequence to each ANPC three-level inverter; the redundant switching states in the ANPC three-level inverter are alternately used in two switching periods; according to the invention, the system voltage vector is distributed to the inverter, so that the system common-mode voltage is zero and the output current ripple effect is reduced; a redundant O state selection mode of the ANPC inverter is optimized, different O states are alternately used in a modulation period, and the effect of balanced distribution of switching loss is achieved.

The present application belongs to the technical field of power supply and distribution. A parallel three-level inverter modulation method, system, product, medium and equipment are proposed, which equivalent double parallel three-level inverters as a whole five-level inverter, inject zero sequence components to the initial three-phase reference signal to obtain the reference signal, identify the resultant vector through rounding and remainder operation, and then adjust the reference signal according to the sum of the three-phase state of the initial resultant vector to output a five-segment switching sequence, and then decompose the equivalent five-level reference signal into two sets of three-level reference signals, allocate the reference signals by dividing the half-carrier period and compare them with the triangular carrier to obtain a three-level vector sequence combination. The present application realizes the comprehensive optimization of common-mode voltage, zero-sequence circulating current and output current ripple, avoids complex sector judgment and duty cycle calculation, and reduces the implementation complexity and computational burden.

This invention provides a model predictive control method for a six-phase electric drive reconfigurable on-board charging system, belonging to the field of power electronics and electric drive technology. It solves the problems of high current ripple and heavy computational burden on the system. The technical solution includes the following steps: S1: Obtaining the q-axis current setpoint; S2: Obtaining the real-time 0 / 1 axis current setpoint; S3: Acquiring the six-phase current of the six-phase symmetrical permanent magnet synchronous motor; S4: Calculating the predicted current for the next cycle; S5: Selecting the voltage vector for the next cycle; S6: Obtaining the on / off state of the switching transistors in the next cycle; S7: Realizing the operation mode of the six-phase electric drive reconfigurable on-board charging system based on the drive signal of the six-phase inverter. The beneficial effects of this invention are: it can improve the dynamic and steady-state performance of the system while reducing the computational burden and lowering zero-sequence current ripple, and has broad application prospects.

The invention relates to the technical field of power electronics, in particular to a diesel generator test system control method based on a moving average filter, and the method comprises the steps: collecting an output voltage instantaneous value of a diesel generator in real time, and obtaining a voltage sampling sequence; inputting the voltage sampling sequence into a pre-constructed moving average filter; performing moving average processing on the input voltage sampling sequence through a moving average filter to obtain an output signal; generating a current command signal based on an output signal of the moving average filter; and according to the current instruction signal, driving the diesel generator test system to simulate a load with a specific power factor through current closed-loop control, and carrying out load simulation test on the diesel generator. The moving average filter is directly used for generating a current instruction of the test system, and the lag angle of the current instruction is linearly adjusted by adjusting the point number of the filter through the linear phase-frequency characteristic of the filter, so that the accurate and convenient control of the simulation load power factor of the diesel generator test system is realized.

The invention relates to a battery heating method, device and equipment, a storage medium, a system and a vehicle, and relates to the technical field of electric vehicles. The method is applied to a battery heating system. The battery heating system comprises a power battery, a motor controller power module, a three-phase motor, an inductance module and cooling liquid. Cooling liquid sequentially flows through the motor controller power module, the three-phase motor, the inductance module and the power battery. The method comprises the following steps: receiving a heating request message sent by a battery controller; and in response to the heating request message, controlling any one of the first power switch, the second power switch and the third power switch to be switched on in the current period, and controlling the other two power switches to be switched off. Thus, no electromagnetic force is generated in the stator winding of the three-phase motor, and torque output can be effectively avoided. Meanwhile, the motor controller power module, the three-phase motor and the inductance module can heat the power battery in a cooling liquid heating mode.

The invention discloses a naval vessel laser inertial navigation equipment power supply device, and relates to the technical field of military affairs, the naval vessel laser inertial navigation equipment power supply device comprises a power supply case, a UPS power supply module is arranged in the power supply case, and the UPS power supply module is switched to a battery mode to supply power to a servo power supply module, an inertial power supply module, an excitation power supply module and a programmable power supply module when external power is cut off; through reasonable configuration of filtering parameters in a plurality of output filtering units, power supply ripples are reduced, the protection capability on power supply switch noise and electromagnetic interference is enhanced, the power supply output performance quality is optimized, the servo power supply module carries out redundancy design on power supply output, the reliability of a single machine is improved, and the reliability of the single machine is improved. Two circuits which are identical in composition are connected in parallel and jointly act on an output port, when one circuit breaks down, stable operation of equipment can be guaranteed, and the excitation power supply module generates stable sine waves through a Wien bridge oscillation circuit which is jointly composed of two power amplifiers, so that the power supply device can stably work with loads for a long time.

The utility model discloses an artillery azimuth firing range steering limiting circuit which comprises a single chip microcomputer, a power panel, a data acquisition board, a storage circuit and a steering circuit. The data acquisition board is connected to an input pin of the single-chip microcomputer, the storage circuit is connected to the input pin of the single-chip microcomputer, the steering circuit is connected to an output pin of the single-chip microcomputer, and the power board is connected to a power pin of the single-chip microcomputer. A power supply circuit is arranged on the power supply board, a unilateral diode is added to the input end of the power supply circuit, circuit burning caused by reverse connection of the positive electrode and the negative electrode of the power supply input end can be effectively prevented, and the power supply stops working once the positive electrode pin and the negative electrode pin of the power supply input end are connected reversely. And the output end of the power supply circuit is filtered by using the capacitor, so that output voltage ripples can be effectively reduced, the output stability of the power supply is ensured, and the anti-interference performance of the whole circuit is further improved.

The application discloses a BOOST internal ripple compensation circuit based on COT control and relates to the field of power supply design.The BOOST internal ripple compensation circuit comprises a conduction time control module TON, a driving module Driver, a ripple injection circuit and a comparator COMP; when the conduction time control module TON is in a conduction state, the comparator COMP is used for performing ripple compensation on the square wave generated by the ripple injection circuit, so that the BOOST system is guaranteed to be stable.The application does not need an equivalent resistor in series with an output capacitor, the ripple compensation is performed by the internal ripple injection circuit, the ripple of the output voltage is greatly reduced, meanwhile, the problem that the change trend of the ripple of the output capacitor is inconsistent with the change trend of the inductor current ripple is solved by the ripple injection circuit, the transient response is enhanced, compared with the traditional RC filter which needs a large capacitor and a resistor, the application only needs to select a small capacitor and a resistor to realize the ripple compensation, and the area of a chip is reduced.

The invention discloses an electric vehicle charging pile control method based on generalized second-order differential, and belongs to the technical field of electrics. The charging pile topology comprises a three-phase alternating current power grid, a filter inductor L, a three-phase VIENNA rectifier, a full-bridge three-level DC / DC converter, an LC filter circuit and a load resistor R. The control method comprises the steps of sampling, rectifier control and converter control. Wherein the three-phase VIENNA rectifier adopts common PI control based on voltage and current double closed loops, and the full-bridge three-level DC / DC converter adopts double-loop control based on a generalized second-order differential PID (Proportion Integration Differentiation) controller. The generalized second-order differential function not only retains the phase lead compensation differential effect on a specific frequency range, but also eliminates the inherent high-frequency noise amplification effect of the traditional differential function. According to the control method, the dynamic performance of the system can be effectively improved, the output signal ripple is small, and the control speed is high.

This invention discloses a hybrid model predictive control method and device for a three-level energy storage converter. The method determines candidate voltage vectors based on voltage vector transformation rules; calculates the cost function value of each candidate voltage vector using a cost function; and selects the voltage vector corresponding to the minimum cost function value as the first... k The pre-optimal voltage vector for the first control cycle; based on the first... k The preliminary optimal voltage vector and midpoint voltage of the first control cycle are combined to determine the first control cycle. k The optimal voltage vector in the first control cycle; in the second... k Calculate the control cycle. k -1 and k The duty cycle of the optimal voltage vector is determined; the gate drive signal corresponding to the optimal voltage vector and its duration is applied to the power electronic semiconductor devices of the T-type three-level energy storage converter. This invention combines the advantages of intuitive and simple finite set model predictive control and high current quality of continuous set model predictive control, enabling current ripple attenuation and current quality optimization of the T-type three-level energy storage converter.

The present invention discloses a control method for a continuous current mode of a flyback converter. When the flyback converter operates in a critical current mode, the transformer current peak value is recorded as i pk1 And the corresponding off time T off1 , recorded as the first cycle; if the current peak value i of a certain cycle pk No higher than i pk1 , after the original shutdown logic is completed, the flyback switch is turned on, which is recorded as the second cycle; if the current peak value i pk Higher than i pk1 , when the difference is Δi, the switch is controlled to reduce the off time of the cycle to T off1 ‑k•Δi, the current cannot return to zero at the end of the cycle and enters the continuous current mode, which is recorded as the third cycle; after that, the current peak value i pk To determine the condition, the flyback converter switches between a discontinuous current mode (DCM) and a continuous current mode (CCM). The present invention can stably control and adjust the duty cycle of the flyback converter entering CCM, and take into account the output average current calculation.