6results about How to "Optimize power distribution" patented technology

The utility model relates to vehicle energy recovery device technical field especially discloses a hybrid device with power recovery function, including engine, the drive shaft that coordinates with engine and the electric power generation all -in -one that is connected with drive shaft, electric power generation all -in -one is connected with electric energy storage module, still include worm and worm mechanism, shunt hybrid mechanism and transmission mechanism, transmission mechanism linkage shunt hybrid mechanism and worm and worm mechanism parallel operation hybrid mechanism and electric power generation all -in -one, the input of worm and worm mechanism is connected with the output of engine, shunt hybrid mechanism has two shunt input ends that are connected with worm and worm mechanism and electric power generation all -in -one coordination respectively, shunt hybrid mechanism is driven axle and vehicle's wheel system transmission connection, in the process that vehicle decelerates or brakes, the inertia braking moment of wheel system is driven electric power generation all -in -one and generates electricity via shunt hybrid mechanism, and the electric energy that electric power generation all -in -one generates is stored via electric energy storage module.

The embodiment of the invention provides a 5G-Advanced sensing communication collaborative resource scheduling method and system for a smart substation, and belongs to the technical field of power system operation and maintenance. The method comprises the steps that a 5G-Advanced cellular-free unmanned aerial vehicle communication and sensing integrated network architecture is constructed, the network architecture comprises a passive sensing layer, an air-ground cooperative access layer and a centralized processing layer, and deep integration of sensing, energy supply and communication functions is achieved; establishing a system model based on the network architecture, wherein the system model comprises a network topology model, a communication and inductance integrated transmission model and a constraint optimization problem model; a cross-CPU dynamic resource scheduling algorithm based on MADDPG is designed, and joint optimization of user association, power distribution and load balancing is achieved through a centralized training-distributed execution mechanism; based on a scheduling algorithm and a system model, substation global real-time sensing, data transmission and operation and maintenance performance collaborative guarantee are achieved. The sensing fusion and coverage capability is greatly improved, the dynamic scene adaptability is better, and the sensing-operation and maintenance collaboration value is higher.

The application provides a static SVG device suitable for heavy load of a locomotive, relates to the field of railway power supply, and comprises a three-phase MMC converter, the three-phase MMC converter comprises three-phase bridge arms, each phase bridge arm is composed of an upper bridge arm and a lower bridge arm, the upper bridge arm comprises a plurality of cascaded half-bridge sub-modules, and the lower bridge arm comprises a plurality of cascaded half-bridge sub-modules, wherein the energy storage elements of the half-bridge sub-modules at least comprise super capacitors; further comprising: a voltage balancing module, which is used for determining the number of real-time input half-bridge sub-modules of the upper bridge arm and the lower bridge arm of each phase bridge arm, and determining the real-time input half-bridge sub-modules of the upper bridge arm and the lower bridge arm of each phase bridge arm based on the number of real-time input half-bridge sub-modules of the upper bridge arm and the lower bridge arm of each phase bridge arm; a network-forming voltage source control module, which is used for active control, reactive control and virtual impedance control, has the advantages of adapting to heavy load of a locomotive and improving the stability of power system operation.

The application relates to the technical field of semiconductor devices, in particular to a high-efficiency SiP power module which comprises a ceramic substrate, a metal frame, a metal cover plate and a plurality of power units; each power unit comprises a MOSFET, a transformer, a high-voltage capacitor and a high-voltage diode, an NTC thermistor, a PTC thermistor, an electrically-controlled variable resistor, a voltage-dividing resistor, a filter capacitor and a micro MCU; the NTC thermistor is connected in series on a source path of the MOSFET and is connected through a voltage-dividing circuit and the micro MCU; the PTC thermistor is connected in parallel with the source and the drain of the MOSFET; the micro MCU outputs a resistance value adjustment amount of the electrically-controlled variable resistor by analyzing voltage and resistance change conditions in the circuit, and adjusts the resistance value of the electrically-controlled variable resistor by using the resistance value adjustment amount. The application improves the heat management capability of the SiP power module and avoids local temperature imbalance.

The invention discloses a coordination control method for a multi-machine parallel system of an energy storage inverter of a water-based sodium-ion battery. The method comprises the following steps: estimating the state of charge (SOC) of an energy storage module; calculating the average value of the SOC; calculating a difference value between the current state of charge (SOC) of each energy storage module and the obtained SOC average value, and calculating a balance coefficient of each energy storage module in combination with a deviation adjustment coefficient; calculating the given active power of each energy storage module, and carrying out the balance adjustment of the output of the corresponding energy storage module through the given active power. According to the method, the problems that a unit with high SOC continuously discharges at high power and a unit with low SOC prematurely quits operation due to traditional VSG control or droop control are solved, simulation display shows that after SOC equalization is added, the SOC of each energy storage unit gradually approaches, the initial module with high SOC descends faster, the module with low SOC descends slower, equalization is finally realized, and compared with traditional control, the method has the advantages that the control efficiency is improved, and the cost is reduced. And the service life and the stability of the whole system can be improved.

The application provides a kind of grid-side electrochemical energy storage power station energy management system control method, it is related to grid-side electrochemical energy storage power station technical field, energy management system includes monitoring host computer, coordination controller and energy storage battery group, control method includes: monitoring host computer receives the power scheduling instruction issued by grid dispatching system, and power scheduling instruction is passed to coordination controller;Wherein, power scheduling instruction includes active scheduling instruction and reactive scheduling instruction;After coordination controller receives power scheduling instruction, generate control rule, and control rule is sorted according to preset priority rule, obtain target rule;Coordination controller executes target rule, obtains initial control result;The state of charge of energy storage battery group is acquired, based on initial control result and the state of charge of energy storage battery group, determine the power distribution demand of energy storage battery group;Based on allocation demand, energy management system is controlled, so that energy storage power station can be efficiently controlled.