362 results about "Dc control" patented technology

To make effective use of multi-access session.SOLUTION: In a mobile communication system including a core network connected to a plurality of radio access networks, the core network includes a network device for transmitting DC control information for a multi-access session indicating a combination of base stations that prohibit DC (Dual Connectivity) for a user terminal to a base station of a radio access network to which the user terminal is connected when a multi-access session to be established between the user terminal and the core network satisfies a specific multi-access session condition, and the base station includes a DC control unit for controlling DC for the user terminal based on the DC control information for the multi-access session.SELECTED DRAWING: Figure 1

The invention discloses a direct current control method and system for improving transient stability of a grid-connected converter, and the method comprises the steps: judging whether a power angle out-of-limit-based fault judgment module or a voltage out-of-limit-based fault judgment module has a voltage drop or phase jump fault or not when any one module judges that a power grid has a voltage drop or phase jump fault; processing an angular velocity control signal of a synchronous control link through a direct current port transient energy correction module, and performing temporary storage unbalanced power-oriented lifting and inertia correction-oriented lifting on a direct current voltage reference value; the voltage value of the direct-current port capacitor is compared with a direct-current voltage reference value, and is processed by the steady-state direct-current voltage control module to obtain a direct-current voltage control reference value; the output data of the converter at the common coupling point obtains a synchronous control signal according to a synchronous control link; and based on the synchronous control signal, an internal potential reference value is obtained according to an internal potential control link, and then a converter driving signal is generated. According to the invention, the stability problem of the grid-connected converter when the power grid has a transient fault can be effectively solved.

The invention discloses an intelligent optical storage integrated AC / DC control method based on an energy management and control algorithm. The method comprises the following steps: acquiring and monitoring first data in real time; the working state of the photovoltaic module is dynamically adjusted through a maximum power point tracking algorithm, so that the photovoltaic module can output maximum power under various environmental conditions; according to the first data monitored in real time, the electric energy of photovoltaic power generation is dynamically distributed; acquiring a power grid fault state, switching an operation mode according to the power grid fault state, and controlling electric energy balance in the system; deploying an intelligent sensing system, collecting system operation state parameters in real time, and adjusting an energy management and power control strategy based on real-time data to enable the energy management and power control strategy to adapt to environment and load changes; monitoring faults and abnormal states, identifying fault types and positions, and intervening to recover normal operation of the system. The technical method for realizing optimal management and seamless operation switching of energy has the advantages of high system stability, high energy utilization efficiency and timely fault processing.

A metasurface array comprises a plurality of electronic control metasurface units, and each electronic control metasurface unit comprises a patch layer, a first dielectric substrate layer, a floor layer, a bonding layer, a second dielectric substrate layer and a bias line layer from top to bottom; the patch layer comprises four square double-ring metal patch structures and a dipole arm structure provided with a pin diode, a central metal through hole penetrating downwards to be connected with the offset line layer is formed in the crossed position, and corresponding to the diameter of the central metal through hole, only the diameter of an opening in the floor layer is large, and the other layers are the same; a peripheral metal blind hole penetrating through the first dielectric substrate layer is downwards formed in the central point of each square double-ring metal patch structure; the bias line layer is of a fan-shaped branch knot structure; under the cooperation of the feed source antenna, the electric control metasurface unit realizes the on-off of a pin diode through phase distribution coding under the control of the direct current control circuit board and the ARDUINO microprocessor, and realizes beam scanning in a specified direction. The antenna is wide in frequency band and low in cost.

Circuits and methods for increasing the long-term reliability and performance of phase change material (PCM) switches. To overcome the effects of electromigration damage of the resistive heater(s) of a PCM switch and of the PCM itself, and thus improve long-term performance and reliability, embodiments apply an AC control pulse of equal power to a conventional DC control pulse. An embodiment encompasses a PCM switch, including a PCM region including first and second signal ports configured to be coupled to a signal source; a resistive heater adjacent the PCM region and including first and second heater control signal ports; and a source of AC control pulses coupled to the first and second heater control signal ports, the AC control pulses having a first power profile to transform the PCM region into a low resistance state and a second power profile to transform the PCM region into a high resistance state.

The invention discloses a method for quantitatively evaluating the immune level of subsequent commutation failure of an AC-DC hybrid system, and the method comprises the steps: carrying out the analysis of the transient process of the system based on the transient reactive dynamic characteristics of the AC-DC hybrid system on the basis of achieving the cross-regional power transmission through a high-voltage DC power transmission technology; the essential relation among the electrical quantities in the transient process is obtained; and deducing an online evaluation index GCFII for reflecting the immune level of the subsequent commutation failure of the system in combination with known system parameters and electrical signals acquired by the PMU. According to the method, the influence of the direct current control mode is considered by obtaining the online evaluation index GCFII, and real-time updating can be carried out along with the change of system operation parameters, so that the requirements of real-time performance and accuracy can be met, a theoretical basis is provided for power grid construction and operation of operation personnel, and safe operation of a power grid is effectively ensured.

The invention relates to a modular multilevel voltage converter (10) comprising three arms (a, b, c), each comprising an upper half-arm and a lower half-arm, wherein each half-arm comprises a chain of individually controllable submodules of formula (I), and wherein the converter further comprises a control unit (30) comprising at least one AC control module (40), a DC control module (52), and a modulation member (58) that is configured to deliver modulation signal setpoints for controlling the control members of the submodules of the upper and lower half-arms, wherein the modulation signal setpoints are delivered on the basis of voltages across the terminals of the capacitors of the submodules of the upper and lower half-arms and on the basis of modulation voltage setpoints applied to the upper and lower half-arms, and wherein the modulation voltage setpoints depend on a modulation voltage alternating component setpoint delivered by the AC control module, a modulation voltage common-mode component setpoint delivered by the DC control module, and a modulation voltage homopolar common-mode component setpoint, which depends on the voltages across the terminals of the capacitors of the submodules of the upper and lower half-arms.

A smart variable inductor based on magnetorheological materials comprises an "EE"-shaped iron core, two DC control coils, one AC coil, and a magnetorheological material gap. The magnetorheological material gap is located on the central column of the "EE"-shaped iron core. The two DC control coils and the AC coil are wound around the two side columns and the central column of the "EE"-shaped iron core, respectively. By controlling the DC current in the DC control coil, the magnetic saturation of the side columns can be changed, thus achieving intelligent wide-range adjustment of the inductance of the AC coil. The beneficial effects of this patent are: the provided smart variable inductor based on magnetorheological materials, due to the higher permeability of magnetorheological materials than air, which decreases with increasing magnetic field strength, has advantages such as a wide inductance adjustment range and low diffusion flux. When used in LLC resonant converters, it can achieve intelligent wide-range adjustment of input / output voltage and load, as well as intelligent current sharing control in multi-parallel converters.

The present application provides an all-digital multi-phase DC-DC controller. The digital DC-DC controller includes time-based analog-to-digital converters (ADCs) for converting analog voltage signals into digital-domain signals so as to benefit from gate length scaling without limited by the low voltage swing. Also, the DC-DC controller further includes a digital control circuit and a time-based modulator. The digital control circuit can control the time-based modulator in a digital domain, thereby reducing the affection caused by process, voltage and temperature (PVT) variation. Also, the time-based modulator can adjust the timing of the PWM signals and avoid the performance degradation caused by circuit mismatch. Since the digital control circuit can be fully synthesizable, it allows implementations in all kinds of digital CMOS processes with a small chip area.

The invention provides a novel magnetically controlled reactor, and relates to the technical field of reactors. The novel magnetically controlled reactor comprises a square iron core, a packaged alternating current coil and a packaged direct current coil, the six square-shaped iron cores are divided into two columns and three rows and are vertically arranged at intervals; the packaged alternating current coils are respectively arranged around the inner vertical part of the square-shaped iron core, the inner ends of the two packaged alternating current coils in each row are connected in series, and the outer ends of the two packaged alternating current coils in each row are respectively used as an input end and an output end; the packaged direct current coils are arranged in the hollow parts of the two columns of square iron cores in a penetrating mode and surround the two columns of packaged alternating current coils at intervals. According to the invention, the technical problem of how to significantly suppress the starting impact current and effectively improve the efficiency of adjusting the saturation and impedance of the iron core by the DC control current based on the high-voltage load is solved.

The utility model provides an integrated structure of a distributed energy storage system, which comprises an energy storage cabinet, a battery module, a fire fighting system, a power distribution and control system, a PCS module, a heat dissipation air duct, a heat management air conditioner and a direct current control box are integrated in the energy storage cabinet, and a battery fixing assembly is fixedly installed on the inner wall of the energy storage cabinet. According to the utility model, the battery module is conveniently mounted in the energy storage cabinet in a loading and unloading manner through the battery fixing assembly, and the left and right clamping mechanisms are matched with the elastic structure to clamp and limit the battery module from the left and right directions; the upper and lower bearing mechanisms are arranged to be matched with the traction structure, so that the battery module can be supported from the bottom, meanwhile, auxiliary fixing can be conducted from the top of the battery module, and bottom rollers in the upper and lower bearing mechanisms can be driven in the assembling and disassembling processes of the battery module; in the assembling and disassembling process, the stability is ensured, and meanwhile, the bolts do not need to be repeatedly disassembled, so that a worker can conveniently install or replace the battery module.

The invention belongs to the technical field of communication, and particularly relates to a 3-bit phase reconfigurable metasurface. The metasurface comprises a two-dimensional array formed by metasurface units and a direct-current bias network formed by bias lines of the metasurface units. Each unit is composed of three metal layers and two dielectric layers, the top layer is used for receiving and radiating electromagnetic waves, the middle layer serves as a ground layer, and the bottom layer serves as a phase shifter to achieve a 3-bit reconfigurable function. The phase shifter is divided into three parts which respectively realize 45-degree, 90-degree and 180-degree phase shifting functions, and eight phase states are realized through combined work of the three parts; the three parts are respectively controlled by a direct-current bias line, the direct-current bias lines of the units form a bias network, and independent regulation and control of the units are realized by loading direct-current control voltage from an external field FPGA (field programmable gate array) for the phase shifter. By changing the phase array coding of the metasurface, the functions of invisible cloak and RCS reduction can be realized. The metasurface has the characteristics of high precision, low loss and multiple functions.

The invention, which relates to the technical field of hybrid power supply, discloses a flexible AC / DC hybrid power supply system comprising an AC power supply module used for power supply and electric energy processing; the voltage transformation compensation module is used for voltage compensation and voltage transformation; the photovoltaic conversion module is used for photoelectric conversion, electric energy conversion, electric energy superposition and providing compensation electric energy; the direct current control module is used for electric energy conversion and voltage compensation; the transmission control module is used for controlling an electric energy transmission path and supplying power to the alternating current bus module to obtain the transformation compensation module; the energy storage control module is used for energy storage and discharge control; the alternating-current bus module is used for electric energy gathering and power distribution; the photovoltaic detection module is used for setting a low-voltage threshold value and a high-voltage threshold value and carrying out voltage detection; the energy storage detection module is used for setting a low-power threshold value and a full-power threshold value, carrying out electric quantity detection and judging a power supply state; and the central control module is used for signal receiving and module control. The flexible alternating-current and direct-current hybrid power supply system can improve the energy utilization rate and the power supply stability.

The invention discloses a 2-bit multi-polarization reconfigurable electric control metasurface antenna which comprises a linear polarization feed source horn and a reflection type metasurface. The reflective metasurface comprises a plurality of metasurface units arranged periodically, and each metasurface unit comprises a first metal layer, a first dielectric plate, a second metal layer, a prepreg layer, a third metal layer, a second dielectric plate and a fourth metal layer which are sequentially and coaxially stacked from top to bottom. And two pairs of p-i-n diodes are integrated on each metasurface unit and are used for regulating and controlling linearly polarized waves from the feed source. According to the metasurface antenna, the radiation capacity of dual linear polarization and dual circular polarization is achieved through the single linear polarization feed source and the single reflection type metasurface at the same time, the beam scanning capacity of + / -60 degrees is achieved, and the aperture efficiency is high. In addition, a direct-current control circuit for controlling a p-i-n diode switch is designed on the back surface of the reflective metasurface, so that the integration level of the metasurface system is greatly improved. The metasurface antenna has the advantages of being simple in structure, large in polarization number, low in structural complexity and high in integration degree.

The invention discloses an extra-high voltage direct current transmission system sending end transient overvoltage calculation and suppression method considering the influence of multiple control links, and the method specifically comprises the steps: analyzing the operation characteristics and transient voltage influence factors of an LCC-HVDC system, and revealing that direct current is a key factor affecting the transient voltage change of a bus; the method comprises the following steps: decomposing the whole process of transient direct current under commutation failure according to direct current change characteristics in an operation curve of a direct current control system, and deducing an approximate analytical expression of the direct current after the fault occurs; respectively calculating voltage drops on equivalent resistance and reactance on the line, substituting the voltage drops into a direct current analytic expression, and deducing a quantitative calculation expression of transient overvoltage of the converter bus at the sending end; according to the transient overvoltage upper limit value, the allowable direct current minimum value is obtained, and the transient overvoltage suppression method under the commutation failure for improving the VDCOL link minimum current instruction value is provided. According to the invention, the quantitative analysis of the transient voltage is realized, and the transient overvoltage level of the converter bus at the sending end is effectively reduced.

The invention discloses a self-adaptive photovoltaic power supply system, and relates to the field of photovoltaic power supply, the self-adaptive photovoltaic power supply system comprises a frequency converter and a photovoltaic direct current controller, the input end of the photovoltaic direct current controller is adaptively connected with a photovoltaic array, and the output end of the photovoltaic direct current controller is connected with the direct current input end of the frequency converter through a frequency converter direct current bus; the frequency converter is connected with a load; when the photovoltaic array works, a direct-current input voltage is generated and input to the photovoltaic direct-current controller, and the photovoltaic direct-current controller converts the direct-current input voltage into a direct-current output voltage matched with the direct-current bus voltage of the frequency converter so as to supply power to the frequency converter. The system can realize adaptive DC coupling of the photovoltaic DC controller and the frequency converter, and improves the efficiency of a photovoltaic power supply system.

The invention provides a European standard direct current charging control device and a charging method thereof, the device comprises a plurality of European standard direct current controllers, a plurality of charging communication controllers and a plurality of direct current charging guns, and the European standard direct current controllers are connected with one or two charging communication controllers through CAN buses. The charging communication controller is connected with the direct current charging gun through a PLC bus, and the plurality of European standard direct current controllers are mutually connected through network cables. The functional modules are combined flexibly and can be expanded automatically according to specific requirements, and multiple power distribution modes can be selected. The high-voltage part realizes reinforced insulation, the low-voltage part realizes basic insulation, a high-voltage and low-voltage isolation design mode is adopted, the stability of the charging control system is improved, and the anti-interference capability is high. The system has the advantages of low cost, comprehensive functions, wide acquisition range, high precision, stable and reliable performance, strong anti-interference capability, flexible combination mode and the like.

The invention discloses a welding device for a direct current control cabinet production cabinet body, and particularly relates to the technical field of welding devices.The welding device comprises a base, a welding mechanical arm is fixedly installed at the upper end of the base, a control terminal is fixedly installed at the upper end of the base, and a rotating structure is fixedly installed at the upper end of the base; the inner surface of the rotating structure is slidably connected with a supporting and positioning structure, and the rotating structure, the supporting and positioning structure and the welding mechanical arm are all connected with the control terminal through cables. According to the welding device for the direct-current control cabinet production cabinet body, the supporting and positioning structure is used for positioning and fixing the main beam and the cross beam of the steel frame, the rotating structure and the supporting and positioning structure are matched so that the steel frame can move along a preset track and move to a preset position, a welding mechanical arm can conveniently weld the steel frame and the cross beam, and the welding efficiency is improved. The supporting and positioning structures are used for positioning the main beams and the cross beams, so that deviation caused by impact of a welding gun in the welding process can be avoided, the welding precision is guaranteed, and the quality and strength of finished products are improved.

The present invention discloses a DC control method and system for improving the transient stability of a grid-connected converter. The method includes: when any one of a power angle over-limit fault judgment module and a voltage over-limit fault judgment module determines that a voltage drop or phase jump fault has occurred in the power grid, the angular velocity control signal of the synchronization control link is processed by a DC port transient energy correction module, and the DC voltage reference value is raised for temporary unbalanced power storage and for inertia correction; the voltage value of the DC port capacitor is compared with the DC voltage reference value, and processed by a steady-state DC voltage control module to obtain a DC voltage control reference value; the output data of the converter at the common coupling point is used to obtain a synchronization control signal according to the synchronization control link; based on the synchronization control signal, an internal potential reference value is obtained according to the internal potential control link, and then a converter drive signal is generated. The present invention can effectively solve the stability problem of the grid-connected converter when a transient fault occurs in the power grid.

The invention relates to a fault chain searching method and device for a power grid containing a flexible direct access receiving end and a medium, and relates to the field of power grid safety, and the method comprises the steps: S1, constructing an electromagnetic electromechanical joint simulation model; s2, simulation is carried out based on the electromagnetic electromechanical joint simulation model, and comprehensive vulnerability indexes of all alternating-current lines in the receiving-end power grid are obtained through calculation based on simulation data, the comprehensive vulnerability index is obtained by a hybrid multi-infeed short-circuit ratio variable quantity, a DC commutation failure voltage recovery capability metric value, a node voltage offset and a power flow transfer entropy; and S3, sorting all the alternating-current lines according to the comprehensive vulnerability indexes from large to small, selecting the first alternating-current line as a starting point of a fault chain, and searching in combination with an electromagnetic-electromechanical joint simulation model to obtain the fault chain. Compared with the prior art, the method has the advantages of reflecting the response process of the conventional DC control system and the flexible DC control system, improving the fault chain search accuracy and the like.

The invention relates to an impedance modeling method and device and computer equipment. Comprising the steps that disturbance voltage is injected to the alternating current side of a main circuit, a first relation between a modulation small signal and an alternating current small signal is obtained through alternating current control topology, the disturbance voltage and a phase angle small signal are correlated through a phase-locked loop, and a second relation between the modulation small signal and an alternating voltage small signal is determined; injecting disturbance voltage to the direct current side of the main circuit, and determining a third relationship between the modulation small signal and the alternating current small signal and a fourth relationship between the direct current small signals based on the alternating current control topology and the direct current control topology; and finally, impedance modeling is carried out in combination with a frequency small-signal model, so that self-impedance and coupling impedance characteristics of an alternating current side and a direct current side can be accurately reflected, and a basis is provided for analyzing system stability and optimizing a control strategy.

The utility model provides an optical storage, charging and inspection integrated cabinet. The optical storage, charging and inspection integrated cabinet comprises a cabinet body, a power distribution cabin, a battery cabin and a DC cabin, the battery cabin and the DC cabin are respectively positioned on the left side and the right side of the power distribution cabin in the cabinet body; a water cooling cabin is arranged at the bottom of the power distribution cabin close to the battery cabin; a plurality of layers of liquid cooling electric boxes connected in series are mounted in the battery cabin, and a water cooling unit is mounted in the water cooling cabin; a transformer module, a DC control module and a multi-layer DC / DC module are sequentially mounted in the DC cabin from bottom to top; a main control box, a photovoltaic controller and an energy storage converter are mounted in the power distribution cabin; the utility model further provides an optical storage, charging and inspection station which comprises the optical storage, charging and inspection integrated cabinet, a liftable tray and a plurality of charging piles. The plurality of charging piles and the optical storage, charging and detection integrated cabinet are detachably installed on the tray and are connected through cables. According to the utility model, multiple functions are integrated, and meanwhile, the portable disassembly, assembly and transportation are realized.

The Electric Vehicle Supply Equipment (EVSE) described herein is designed for Vehicle-to-Load (V2L) power transfer, enabling the delivery of electrical power from an electric vehicle to an external electrical load. The EVSE includes an output connector for connecting to a vehicle connector via an output cord, an electronic controller, and a power supply. The power supply is capable of receiving a direct current (DC) control pilot signal transmitted through the vehicle connector via the output connector and supplying DC electrical power to the electronic controller based on the received control pilot signal. This innovative EVSE system facilitates efficient and controlled power transfer between electric vehicles and external loads, enhancing the versatility and functionality of electric vehicle charging infrastructure.

The invention discloses a fault power loss cooperative calculation method and system for a DC power transmission system of a parallel converter topology, and electronic equipment. The method comprises the following steps: establishing communication between a stability control device and DC control and protection equipment of the DC power transmission system; the stability control device judges that the fault-caused locking of the current converter comprises fault-caused locking of the current converter on the side, fault-caused locking of the current converter on the opposite side and locking faults of double sets of crashed fault-pole current converters on the basis of a signal sent by the direct-current control and protection system; according to the direct current pole control mode, whether the sound current converter has the power conversion capability or not when the intra-pole single current converter breaks down is judged, and the direct current fault power loss amount is calculated based on the maximum transmittable power of the remaining sound current converter after the fault. According to the method, the problem of inaccurate fault power loss calculation under complex working conditions of opposite-side single converter locking, bipolar control crash and the like is solved, the effect of accurately calculating the fault power loss amount is achieved, and the method is of great significance to fault analysis, reliability evaluation and safe and stable control of the parallel converter topology direct-current power transmission system.

This invention discloses a method and system for extracting and associating physical and logical circuits in a DC control and protection system. The method includes: constructing physical circuits based on engineering design drawings and optical cable documents; parsing the graphical program of the DC control and protection device to extract communication-related symbol information and constructing logical circuits; and representing the circuit data using a directed graph to associate the physical and logical circuits. This invention can efficiently realize the automatic construction and association of communication circuits, improving the efficiency of communication circuit diagnosis, debugging, and operation and maintenance in ultra-high voltage DC control and protection systems.

The invention discloses a rapid commutation failure identification method and system for an anticipated fault set example, and the method comprises the steps: employing a rapid classification commutation failure identification method integrating analysis and numerical simulation, carrying out the recognition and analysis of a first-level rapid commutation failure, and carrying out the analysis of a direct current of which the extinction angle or critical voltage does not meet the commutation failure requirement, but the subsequent commutation failure risk exists; if yes, further numerical simulation is carried out, second-layer grading fast commutation failure identification analysis is carried out according to the change of the extinction angle and the voltage, at most four-stage fast commutation failure identification analysis is carried out, the coupling influence of direct current control protection and an alternating current network is considered under the electromechanical simulation scale, and less numerical simulation iteration is adopted, so that the identification accuracy is improved. The direct current which may have the commutation failure within four cycles of the anticipated fault is quickly recognized stage by stage, so that the recognition robustness is effectively considered on the basis of quick commutation failure recognition analysis.

The present invention relates to a method, device, and medium for searching for fault chains in a receiving-end power grid containing flexible direct current (FDC), and relates to the field of power grid security. The method comprises: step S1: constructing an electromagnetic, electromechanical, and mechanical co-simulation model; step S2: performing simulation based on the electromagnetic, electromechanical, and mechanical co-simulation model, and calculating, based on the simulation data, a comprehensive vulnerability index for each AC line in the receiving-end power grid, wherein the comprehensive vulnerability index is obtained by the change in the hybrid multi-infeed short-circuit ratio, a DC commutation failure voltage recovery capability metric, a node voltage offset, and a power flow transfer entropy; and step S3: sorting all AC lines from largest to smallest according to the comprehensive vulnerability index, selecting the first AC line as the starting point of the fault chain, and searching for the fault chain using the electromagnetic, electromechanical, and mechanical co-simulation model. Compared with the prior art, the present invention has the advantages of reflecting the response process of conventional DC and flexible DC control systems and improving the accuracy of fault chain search.

The invention relates to the technical field of power control, in particular to an active regulation space quantitative evaluation method considering active voltage coupling influence, and the method comprises the steps: firstly constructing a steady-state power flow equation containing DC control characteristics, correcting a Jacobian matrix through introducing a commutation bus power correction, and building a voltage active sensitivity index; probabilistic load flow calculation is carried out in combination with a new energy output probability model, and a voltage weak node is accurately identified by using an impedance mode margin index; and generating a PV curve by adopting a continuous power flow method, superposing a static voltage safety constraint condition, and performing intersection operation on a unit output interval and a reserve capacity interval in a safe operation range to obtain an effective active power regulation space, thereby accurately quantifying the actual regulation capability on the premise of ensuring the voltage safety, and further realizing high-precision voltage regulation. And the safety and the economical efficiency of system operation are effectively improved.

The invention discloses a photovoltaic power generation control system, a control method, equipment, a medium and a product, and relates to the technical field of photovoltaic power generation, in the control system, the working mode of a photovoltaic array is determined through a front-stage DC / DC control module according to the maximum available power of the photovoltaic array, the actual output power of the photovoltaic array and the power of the power grid side; the pulse duty ratio is adjusted according to the working mode of the photovoltaic array, and a pulse width modulation signal is generated to control the DC-DC boost converter; transient power suppression is carried out through a post-stage DC / AC control module according to power grid side power and actual output power of a photovoltaic array, direct-current bus extra reference voltage is generated, and PI adjustment is carried out according to the direct-current bus reference voltage and an error value between the direct-current bus extra reference voltage and the direct-current bus voltage. And according to a result output by the second PI regulator and a voltage phase signal, a voltage signal and a current signal of a power grid side, a space vector pulse width modulation signal is generated to control the DC-AC inverter, so that efficient, stable and intelligent management of photovoltaic power generation is realized, and powerful technical support is provided for wide application of photovoltaic energy.

The invention discloses an integrated control method for an aircraft power supply system. The method comprises the following steps: directly and electrically connecting an engine controller with a generator output contactor, a transformer output contactor, a storage battery output contactor, a transformer rectifier and a storage battery; the engine controller receives the temperature signal, the output voltage signal and the output current signal of the transformer rectifier in real time, judges the working state of the transformer rectifier, and carries out output control and fault protection on the transformer rectifier according to the working state of the transformer rectifier; and the generator controller receives the temperature signal, the voltage signal and the current signal of the storage battery in real time, judges the working state of the storage battery, and performs output control and fault protection on the storage battery according to the working state of the storage battery. The types and the number of airborne equipment are reduced, three different types of controllers, namely a generator controller, a direct current control protector and a storage battery controller, are combined into a whole, and the economical efficiency of a development stage and an external field use and maintenance stage is improved.