933 results about "Current regulation" patented technology

The invention discloses an energy storage battery pack equalization control method, which belongs to the field of energy storage battery packs, and comprises the following steps: S1, constructing a multi-physics field-aging coupling model; s2, based on a multi-physical field-aging coupling model, space-time-frequency domain joint state estimation and unbalanced pattern recognition are realized; s3, formulating optimal equalization topology and control parameters according to space-time-frequency domain joint state estimation and an unbalanced mode recognition result; s4, establishing an electric-thermal-fluid multi-physics field coupling control model, and optimizing equalization current regulation and control, liquid cooling flow velocity and cooling fan rotating speed based on the optimal equalization topology and control parameters; and S5, optimizing the full life cycle of the digital twin drive. By adopting the equalization control method for the energy storage battery pack, the efficient coordination of the energy storage battery pack from dynamic modeling, accurate state estimation and intelligent equalization decision to full life cycle management is realized, and the equalization efficiency and the system reliability are remarkably improved.

The invention discloses an intelligent regulation and control method and system for full-amount resource collaborative power grid power flow, and relates to the technical field of resource collaborative power grid power flow, and the method comprises the steps: obtaining a plurality of partition groups, and combining the partition groups with a power grid topology; obtaining a plurality of voltage grades, and randomly combining the partition groups with the voltage grades to obtain a plurality of efficiency optimization groups; voltage fluctuation data and power flow burden data in the power flow regulation and control process are obtained, and a power flow evaluation model is constructed based on a long-short-term neural network; and matching and constructing a point cloud grid model according to the output of the power flow evaluation model and the efficiency optimization group, performing surface analysis on the point cloud grid model to obtain the selected efficiency optimization group, and applying the selected efficiency optimization group to power grid power flow regulation and control, thereby solving the problems of contradiction between power grid power flow calculation precision and regulation and control efficiency and insufficient dynamic adaptability.

The invention discloses a control method for improving the utilization rate of renewable energy sources in real time, particularly relates to the technical field of voltage collapse protection of a direct-current power distribution network, and is used for solving the problems of voltage collapse spreading and renewable energy source utilization rate reduction caused by photovoltaic sudden drop. The method comprises the following steps: monitoring photovoltaic output, bus voltage and load current in real time; predicting a voltage collapse spreading path; identifying an active migration source according to the time sequence difference between the voltage drop and the load current abrupt change; calculating a current increment upper limit of the active migration source cluster; generating a cross-region compensation instruction based on the current increment and the energy storage adjustable power; issuing a compensation instruction to the energy storage unit and synchronously locking the current regulation authority of the active migration source; through dynamic coupling of collapse path prediction and migration source identification, cooperative control of cross-regional power reverse compensation and local load behavior freezing is realized, voltage collapse chain propagation is blocked, and the photovoltaic local consumption rate is improved.

The invention discloses a new energy commercial vehicle fast charging working condition thermal management control method and system, and relates to the technical field of new energy vehicle thermal management and fast charging control, and the method comprises the following steps: collecting the temperature, voltage and current data of each subarea of a battery in a fast charging process, forming a time synchronization sequence, and based on the sequence, obtaining a new energy commercial vehicle fast charging condition; calculating internal thermal resistance and thermal capacity parameters of the battery in real time by using an online identification algorithm, updating a basic thermal model to obtain a corrected thermal dynamic model reflecting actual thermal characteristics of the current battery, importing the corrected model into a model prediction controller, constructing a multi-objective optimization function, and performing rolling solution in a prediction time domain to obtain a prediction model; and outputting an optimal target charging current instruction and a cooling total demand, adjusting the charging power according to the target current, and combining the temperature difference distribution of each partition. Accurate prediction and partition cooperative control of the thermal state of the battery in the fast charging process are achieved, the temperature rise and the temperature difference are effectively restrained while the charging efficiency is guaranteed, the service life of the battery is prolonged, and the system safety is improved.

Aiming at the stability problem caused by harmonic resonance of multiple parallel photovoltaic inverters, the invention provides a parallel inverter micro-grid-oriented adaptive virtual impedance remodeling harmonic resonance suppression method, which comprises a virtual impedance remodeling unit of a grid-connected inverter, a parameter adaptive adjustment unit and a power grid impedance online detection unit. The virtual impedance remodeling unit can improve the output impedance characteristic of the grid-connected inverter and inject a certain damping component into the micro-grid; and the parameter adaptive adjustment unit adaptively adjusts control parameters in the virtual impedance remodeling unit and the current adjustment controller according to the impedance parameters of the power grid so as to maintain the stability of a system control loop. The power grid impedance online detection unit provides power grid equivalent impedance as the input of the parameter adaptive adjustment unit. The three units work cooperatively to form a self-adaptive virtual impedance remodeling multi-inverter micro-grid harmonic resonance suppression strategy, so that the characteristics of a current loop are improved, the inverters can be kept stable under various grid impedance conditions, and the reliability of a multi-inverter micro-grid system is improved.

The invention relates to a COB LED self-adaptive thermal management system, and aims to improve the heat dissipation performance and prolong the service life of a COB LED through an intelligent temperature monitoring and adjusting means. The system comprises an infrared thermal imaging module which is used for obtaining real-time thermal images of a COB LED packaging substrate and an LED unit; the image processing module is used for analyzing the acquired thermal image and identifying a hot spot area; and the current adjusting module is used for dynamically adjusting the driving current of the corresponding LED unit according to the identified hot spot area so as to slow down the generation of hot spots. If the current adjustment cannot sufficiently reduce the hot spot temperature, the cooling mechanism control module starts a cooling mechanism, including adjusting the fan speed, prompting a user to optimize external environment heat dissipation conditions, or partially shutting down the LED unit in extreme cases to reduce heat generation. According to the system, by combining real-time thermal imaging, intelligent current regulation and cooling mechanisms, the COB LED system is ensured to maintain a stable temperature in a high-efficiency working state, so that the overall light output efficiency is improved, and the service life of the LED is prolonged.

The invention discloses a current harmonic disturbance suppression method and suppression system for a permanent magnet synchronous motor. The method comprises the following steps: acquiring voltage and current signals of an electrical loop phasor test in the operation of the motor; an inductance identification algorithm based on high-frequency response is adopted, high-frequency excitation signals are injected, current response is monitored, and stator inductance parameters are calculated; constructing a multi-synchronous rotating coordinate system based on the parameter, and decomposing the current signal to obtain each harmonic current component; building a fuzzy full-order sliding mode observer, inputting an inductance parameter, voltage data and a harmonic current component, and dynamically adjusting a sliding mode surface parameter to observe the position and the rotating speed of a rotor; independently controlling each harmonic current adjusting channel under a multi-coordinate system in combination with observation information, and generating a compensation control signal; and the synthesized master control signal is output to the driving circuit. The system comprises six units, and the method and the system can accurately obtain parameters, efficiently decompose harmonic waves, accurately observe states, realize multi-frequency harmonic disturbance suppression, and improve motor operation stability and efficiency.

The invention relates to the technical field of charging piles, and provides a power factor correction method and system for a high-power charging module, and the method comprises the steps: obtaining a power grid input voltage, a power grid input current and an output load current, constructing an input power fluctuation map and a load dynamic response map, carrying out the subgraph matching and joint convolution, and obtaining a power factor correction result; and obtaining a response change index table and a fitting weight vector, generating a dynamic current regulation vector by using the response change index table and the fitting weight vector, and performing phase correction and waveform reconstruction on the power grid input current according to the dynamic current regulation vector. Through phase correction and waveform reconstruction, the amplitude and phase information of the power grid input current are strictly aligned, the power factor of the high-power charging module is improved, the harmonic interference of the input side is reduced, the electric energy transmission efficiency and the module operation stability are improved, and the problem that in a complex power grid environment, the power consumption of the high-power charging module is reduced is solved. The problem that the correction effect of the power factor is not stable due to the fact that fast-changing input current and voltage are difficult to deal with is solved.

The invention provides a power factor correction method and system for AC-DC conversion of a server power supply, and relates to the technical field of server power supplies, and the method comprises the steps: collecting an input AC signal and a DC bus output signal, calculating a real-time power factor value, constructing a compensation function based on the power factor value, and calculating a deviation value; and generating a compensation parameter matrix through recursive calculation, processing a direct current output signal by adopting an adaptive filtering algorithm, fusing the direct current output signal with the compensation parameter matrix, calculating to obtain a current adjusting signal and a duty ratio adjusting signal, and accurately adjusting a power factor.

The invention relates to a bridge tower component reinforcing steel bar intelligent hoisting control method, which belongs to the technical field of bridge construction, and comprises component reinforcing steel bar butt joint, and specifically comprises the following steps: S601, conical permanent magnet array modules are circumferentially embedded in the end surfaces of component reinforcing steel bars, and annular electromagnet array modules are correspondingly arranged on the end surfaces of embedded reinforcing steel bars; on the basis of the fusion parameter set in the step S2, obtaining the distance value between the embedded steel bar and the component steel bar, and then triggering an electromagnet to be powered on; s602, closed-loop feedback adjustment is conducted, the pose deviation and contact pressure of the component reinforcing steel bars and the embedded reinforcing steel bars are monitored in real time through a multi-mode sensing unit, and data are transmitted back to the edge computing nodes; and S603, electromagnetic parameter dynamic optimization is conducted, the current intensity of the annular electromagnet array is dynamically adjusted according to the pose deviation and the spacing value, and the magnetic attraction force is enhanced. Efficient and accurate butt joint of the component reinforcing steel bars and the embedded reinforcing steel bars is achieved through magnetic butt joint and dynamic current adjustment.

The invention relates to the technical field of motors, and discloses a high-temperature-resistant direct-current coreless gear motor and a test system, and the system comprises a temperature monitoring module, a current regulation and control module, a heat dissipation optimization module, a load response module, a cloud analysis module and a virtual verification module. By arranging the temperature monitoring module, multi-dimensional temperature data during operation of the motor can be acquired in real time, and a temperature distribution diagram can be generated, so that the system can comprehensively sense the internal thermal state of the motor and accurately identify local overheating risk points, thereby improving the operation reliability and safety of the motor under a high-temperature working condition; through cooperative operation and closed-loop control of the current regulation and control module, the heat dissipation optimization module and the load response module, according to real-time temperature and load changes, driving current parameters and heat dissipation resource distribution can be dynamically adjusted, and the heat dissipation efficiency is improved. And the output performance and the torque stability of the motor under high-temperature and high-load conditions are ensured.

A device includes a battery current sense circuit configured to generate a battery current feedback voltage based on a current provided to a battery, a current regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable battery current reference voltage, and a precharge regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable precharge reference voltage. The device also includes a processor configured to set the battery current reference voltage to a first value and set the precharge current reference voltage to a second value. The first value is less than the second value during a transition state.

The invention discloses a dual-channel millimeter wave transmitter, a receiver and a transceiver system. The transmitter comprises a baseband signal processing circuit, a local oscillator signal processing circuit and a radio frequency front-end circuit comprising a high-frequency channel power amplifier, a low-frequency channel power amplifier and a signal synthesis switching circuit. The radio frequency front-end circuit selectively outputs signals of a high-frequency channel or a low-frequency channel through the signal synthesis switching circuit, and a current adjusting circuit is arranged in the baseband signal processing circuit and used for adjusting mismatch of a switching tube in the mixer. The disclosure also provides a dual-channel millimeter wave receiver and transceiver system based on the same concept. According to the invention, the problem of performance bottleneck of a single-channel transceiver in broadband application is solved, the system linearity is improved, the processing capability of high-order modulation signals is improved, and high power efficiency and high integration level are maintained through optimized circuit design.

A multipurpose wordline underdrive circuit includes a wordline driver and a pulldown network. The pulldown network includes a first current-carrying terminal electrically coupled to the wordline driver and a second current-carrying terminal electrically coupled to a control signal. The pulldown network also includes a current-regulation terminal electrically coupled to an additional control signal. Various other devices, systems, and methods are also disclosed.

The invention discloses a circuit breaker integrated with an adjustable hydraulic release. The circuit breaker comprises a circuit breaker body, wherein the adjustable hydraulic release, a release transmission mechanism and a main contact system are arranged in the circuit breaker body. The adjustable hydraulic release comprises a release body and an intelligent control module; the tripper body is provided with an oil cup, an oil cup iron core capable of axially moving, a pole shoe, a first coil and an armature, and the armature is linked with the tripping transmission mechanism. When the first coil is electrified, a first electromagnetic force is generated to push the oil cup iron core to move towards the pole shoe and finally attract the armature to trigger a tripping action so as to break a circuit. The intelligent control module is located at the end of the oil cup and can generate second electromagnetic force in the same direction or reverse direction as the first electromagnetic force to act on the oil cup iron core, and rated current adjustment and overload protection adjustment are achieved. According to the design, the problem that the protection characteristic of a traditional hydraulic electromagnetic release is fixed is solved, the number of synthesized ampere turns is equivalently changed through controllable second electromagnetic force, the rated current is flexibly adjusted, and the requirements of different devices are met.

The invention discloses an adjustable oil damping electromagnetic release applied to a circuit breaker, and belongs to the technical field of release. Comprising an oil cup, an oil cup iron core capable of moving in the axial direction, a pole shoe arranged at the end of the oil cup and a first coil wound around the outer wall of the oil cup, and when the first coil is powered on, first electromagnetic force driving the oil cup iron core to move towards the pole shoe is generated; and the intelligent control module is arranged at the end part of the oil cup and is used for outputting controllable direct current to generate second electromagnetic force in the same direction or opposite direction as the first electromagnetic force, and the release has a rated current adjusting function and an overload protection adjusting function by adjusting the magnitude and the direction of the second electromagnetic force. The controllable second electromagnetic force is introduced into a traditional oil damping electromagnetic release, the rated current specification can be adjusted, the release action time can be adjusted, the advantage that the temperature stability of the oil damping release is good is reserved, and meanwhile the defect that the protection characteristic of the oil damping release cannot be adjusted is overcome.

The invention discloses a board card test load circuit and equipment, and the circuit comprises a regulation and sampling module, a synchronous switch module, a feedback comparison module, a first instrument amplification module, a second instrument amplification module, and a microprocessor. A first four-pin sampling resistor and a second four-pin sampling resistor are configured on a large-current branch, the measurement precision can be improved, a microprocessor controls synchronous switching of a single-path switch unit and a multi-path gating switch unit through a synchronous control unit of a synchronous switch module in measurement so as to adapt to large-current and small-current test application scenes, and the measurement precision is improved. The microprocessor performs signal acquisition through the first instrument amplification module and the second instrument amplification module to realize feedback adjustment, and adjusts control signals of the current regulation and control unit and the synchronous control unit according to error calibration data stored in the storage module and detection data from the DMM module. Precise control of the load pulling current is realized, and the test precision is improved.

The invention relates to the technical field of motor current regulation, in particular to a synchronous reluctance motor induction load change automatic regulation output energy-saving current system, which comprises a load control unit for selecting a starting mode according to a load condition by monitoring load data of a motor in real time and predicting a change trend of a load; the compensation isolation unit performs sampling and real-time compensation according to the change trend to obtain accurate data; the dynamic protection unit is connected with the compensation isolation unit, and key components are modularly designed, so that the starting stability of the motor is improved, the high efficiency in the running process of the motor is ensured, the impact on a power grid and the motor during starting can be remarkably reduced through a soft starting mode, the service life of the motor is prolonged, and the running stability of the motor is improved. The sampling precision is improved, it is ensured that current adjustment and load control are more accurate, the reliability of the system is greatly improved through an over-current and over-temperature protection mechanism, and equipment damage or shutdown caused by faults is avoided.

The invention belongs to the technical field of electronic information, and provides a method for optimizing the stability of a photoelectric information conversion assembly in a severe environment, which comprises the step of optimizing the stability of the photoelectric information conversion assembly in the severe environment. The method comprises the following steps of: synchronously acquiring environment parameters such as temperature, humidity and illumination and equipment current data in a high-temperature and high-humidity environment to construct a multi-dimensional time sequence group; analyzing the coupling degree of each environment parameter and the current sequence, and after locking the high coupling relationship between illumination and current, judging whether the current response has delay or not when the illumination suddenly changes; if the delay exists, further analyzing the current response sensitivity, if the sensitivity deviates from expectation, constructing an illumination-current prediction model, and calculating the current regulation quantity in advance by predicting the illumination abrupt change amplitude to realize pre-regulation; and finally, collecting the adjusted data iteration optimization model, and improving the dynamic response performance and stability of the assembly in a complex environment.

The utility model discloses a flexible load regulation and control framework based on a three-port flexible multi-state switch. The flexible load regulation and control framework comprises the three-port flexible multi-state switch, a first power grid module, a second power grid module and a third power grid module, the first power grid module, the second power grid module and the third power grid module are electrically connected with one another through a three-port flexible multi-state switch; the three-port flexible multi-state switch at least comprises a state A, a state B, a state C and a state D; in the A state, the first power grid module, the second power grid module and the third power grid module are mutually independent; in the B state, one power grid module in the three power grid modules is independent, and the other two power grid modules are in bidirectional power flow transfer connection; in the C state, two power grid modules in the three power grid modules are connected with the other power grid module in a tidal current transfer mode; in the D state, one power grid module in the three power grid modules is connected with the other two power grid modules in a tidal current transfer mode; and the power flow regulation and control flexibility and flexible load power supply reliability of the power distribution network are improved.

A circuit includes an amplifier having a first input, a reference input, and an output. A pulse width modulator (PWM) controller has an input coupled to the output of the amplifier. A first switch has a control terminal coupled to an output of the PWM controller. A second switch has a second terminal coupled to the second terminal of the first switch, and has a control terminal coupled to the output of the PWM controller. An input of a current sensor is coupled to the second terminal of the first switch and is coupled to a second terminal of the second switch. An output of the current sensor is coupled to the first input of the amplifier. A duty cycle monitoring and reference signal adjustment circuit has an input coupled to the output of the PWM controller and has an output coupled to the reference input of the amplifier.

The invention discloses a servo system control method based on frequency domain self-tuning and linear active disturbance rejection, and relates to the technical field of servo control and motor control. Comprising the following steps: based on a mathematical model of a permanent magnet synchronous motor, establishing a double-inertia model suitable for a large-inertia servo system, and constructing an equivalent mathematical expression of an electrical and mechanical transmission system; in a three-stage cascade control architecture composed of a current loop, a speed loop and a position loop, the current loop is used for current adjustment, the speed loop is used for dynamic response adjustment, and the position loop is used for displacement target tracking. Based on a frequency domain performance index and a rule method, PI controller parameters of a speed loop and a position loop are set respectively, and the frequency domain index comprises an open-loop cut-off frequency and a phase margin; and establishing a frequency domain equivalent mapping relation between the PI controller and the LADRC controller. The method has the advantages that the method does not depend on accurate modeling and manual interference, automatic parameter setting can be achieved, non-overshoot dynamic response is achieved, and the remarkable disturbance suppression capacity is shown.

The invention discloses a driving control method, a driving control circuit and electronic equipment. The driving control method comprises the following steps: acquiring a power supply output voltage, an energy storage characteristic voltage and an energy storage characteristic current in an energy storage compensation circuit; performing first filtering processing on the power supply output voltage to obtain a target output voltage; obtaining a feedback regulation output value by using the target output voltage and the power supply output voltage; obtaining an energy storage adjustment output value by using the target energy storage voltage and the energy storage characteristic voltage; obtaining a voltage regulation output value by using the feedback regulation output value and the energy storage regulation output value; obtaining a current regulation output value by using the energy storage characteristic current and the voltage regulation output value; generating a driving control signal by using the current regulation output value; and the driving control signal is sent to the energy storage compensation circuit so as to adjust the power supply output voltage. According to the driving control method, the time delay of dynamic compensation of the power supply output of the energy storage compensation circuit is short, the response is quicker, and the structure is simpler.

The invention provides an anti-over-temperature protection method and system for a battery of a two-wheeled vehicle of a battery changing cabinet in the technical field of battery safety management of the battery changing cabinet. The method comprises the following steps: S1, setting a threshold parameter; s2, collecting the temperature value and the real-time SOC of each battery in the charging process, and calculating the temperature rise rate; s3, when the temperature value is smaller than the temperature early warning value and the temperature rise rate is smaller than or equal to a first temperature rise rate threshold value, a minute-level monitoring mode is triggered; s4, when the temperature value is larger than or equal to the temperature early warning value or the temperature rise rate is larger than a second temperature rise rate threshold value, a second-level monitoring mode is triggered, and the initial charging current is adjusted based on a three-level current regulation and control strategy; s5, performing current recovery operation on the reduced charging current; s6, executing fusing protection based on the triggering times of the three-level current regulation and control strategy; and S7, when the real-time SOC reaches the SOC upper limit, stopping charging of the battery. The power conversion cabinet has the advantage that the charging safety of the power conversion cabinet is greatly improved.

The invention discloses a condenser dynamic heat exchange regulation and control method and system based on multi-dimensional perception and AI, and relates to the technical field of intelligent heat exchange regulation and control. The condenser dynamic heat exchange regulation and control method and system based on multi-dimensional perception and AI comprises the steps that S1, condenser heat exchange perception data are collected and preprocessed; s2, performing two rounds of data screening on the sampling points, realizing emergency regulation and control instruction issuing and abnormal point data processing, and constructing an effective condenser operation data set; s3, the heat exchange adaptation degree of the condenser is evaluated, the load state category is recognized, and a regulation and control instruction is output; and S4, the regulation and control instruction is executed, execution feedback data is collected, the heat exchange execution performance of the condenser is evaluated, whether the current regulation and control instruction needs to be adjusted or not is judged based on the evaluation result, and the execution feedback data and the evaluation result are returned for threshold value updating and regulation and control strategy optimization. The problems that due to fixed heat exchange control of the condenser, phase change is limited under load change, and energy consumption is too high are solved.

The present teaching relates to method and system for charging a rechargeable battery deployed in an electric apparatus. The system resides in the electric apparatus. The system comprises a motor, an inverter, an output rectifier, a configurator, and a controller. The motor comprises a stator having a plurality of stator teeth and a plurality of stator windings wounded on the plurality of stator teeth. The inverter comprises a plurality of power switch devices. The configurator has contactors coupled with the plurality of stator windings and the plurality of power switch devices. The controller controls the plurality of power switch devices and the plurality of contactors, configuring the system to operate in one of a traction mode and a charging mode, where in the charging mode a voltage and / or current regulation occurs using the plurality of power switch devices.

In order to solve the technical problems that an existing wireless communication system based on magnetic coupling needs to be additionally provided with a foreign matter detection unit, so that the system is complex, the cost is high, the dynamic adjustment capability is lacked and the anti-interference performance is poor, the invention provides a wireless communication system and method with foreign matter detection and anti-interference functions. Impedance data of the transmitting coil module are used for foreign matter detection, detected foreign matter distribution information is coded into binary codes to be embedded into communication frames to be transmitted together with the communication frames, and data interaction delay among functional units is eliminated; the working mode switching module predicts the working mode of the wireless communication system at the next moment in real time based on the detected foreign matter distribution data, the actually measured energy efficiency ratio and the channel quality data, and triggers the current regulation and control unit to perform cooperative control on each coil unit of the transmitting coil module when the anti-interference mode needs to be started. And foreign matter detection and efficient information anti-interference transmission are synchronously realized.

The embodiment of the invention discloses a constant current control circuit, a fast charging chip, fast charging equipment and a constant current control method, the circuit comprises a current comparison module, a control module and a voltage loop module, the current comparison module is used for outputting a first control signal when the output current of the fast charging equipment is greater than a preset reference current, and the control module is used for outputting a second control signal when the output current of the fast charging equipment is greater than the preset reference current; when the output current is smaller than the reference current, a second control signal is output; the voltage loop module responds to the output voltage and adjusts the feedback voltage to be equal to the reference voltage when the feedback voltage is larger than or smaller than the preset reference voltage; the control module responds to the first control signal or the second signal and correspondingly adjusts the reference voltage or the feedback voltage so that the output current can be kept within the preset current range. According to the embodiment of the invention, the control module is arranged, the reference voltage or the feedback voltage is adjusted according to the output current, and then the output voltage is controlled, so that constant-current output is realized, the design of a current loop can be omitted, and the circuit is simplified.

A logarithmic detector based on input frequency dynamic compensation comprises a logarithmic amplifier for receiving a radio frequency signal, performing logarithmic conversion and outputting a first current; the frequency discriminator determines first frequency information according to a radio frequency signal, and the first frequency information indicates a first frequency of the radio frequency signal; the control module is used for generating a first control signal and a second control signal based on the first frequency information; wherein the first control signal is used for controlling the magnitude of the second current; the second control signal is used for controlling the magnitude of the third current; the temperature compensation circuit comprises a first transistor with a temperature coefficient and a current adjusting circuit; the first transistor is used for generating a second current changing along with the temperature; the current adjusting circuit adjusts the magnitude of the second current based on the first control signal; and the intercept compensation circuit outputs a corresponding third current based on the second control signal.

The invention provides a control method of a converter, a power conversion device and an energy storage power supply system. Wherein the input end of the converter is used for connecting a first power supply, the output end of the converter and the output end of a second power supply are connected to an AC bus in parallel, the AC bus is used for connecting a load, and the power supply priority of the first power supply is higher than that of the second power supply. The control method comprises the steps of firstly obtaining a load current value and a preset adjustment coefficient, then calculating a current adjustment value according to the load current value and the preset adjustment coefficient, and then calculating a reference voltage value of the converter according to a reference output current value of the converter, the current adjustment value, an actual output current value of the converter and an alternating current bus voltage value, and finally generating an output control signal according to the reference voltage value and the input voltage value of the converter to control the output of the converter. According to the control method, the situation that the current of the converter flows back to the second power supply due to sudden change of the load can be avoided.