5results about How to "Fast power" patented technology

The invention provides a new energy unit transient stability optimization method and system based on active feed-forward, and belongs to the field of new energy power generation. The system includes a current command generator and a current controller. The method comprises the steps of collecting terminal voltage and current of a unit, calculating active power and detecting a transient fault; when a fault is detected, generating an active current instruction through active feed-forward control based on power grid voltage information obtained by an active power signal, a fault voltage amplitude signal and phase locking; meanwhile, a reactive current instruction is generated; a current reference instruction is synthesized, and a converter is driven through closed-loop control to provide power support. According to the method, an active feed-forward mechanism is introduced, so that the new energy unit can respond to the power shortage of the power grid in advance, active and reactive support is quickly provided, frequency drop and power oscillation in the transient process are effectively inhibited, and the transient stability of the power system under the access of high-proportion new energy is remarkably improved.

The embodiment of the invention relates to a photovoltaic equipment control method and device, photovoltaic equipment and a storage medium, and the method comprises the steps: determining a power difference value between the photovoltaic output power of the photovoltaic equipment and the load power of the photovoltaic equipment when the photovoltaic equipment is determined to be in a reverse power state; determining the charging current of a capacitive energy storage module of the photovoltaic equipment according to the power difference value; and charging the capacitive energy storage module according to the charging current and the charge state of the capacitive energy storage module, and adjusting the load power according to the charge state. Therefore, the charging current can be determined based on the power difference value, and energy storage charging and load power can be synchronously adjusted in combination with the charge state of the capacitive energy storage module, so that the system can realize rapid and accurate energy absorption and power distribution when reverse power occurs, reverse power delivery is effectively avoided, and the overall regulation and control efficiency and stability are improved.

The application provides a fast charging circuit of an energy storage device and a charging method and a charger thereof, wherein the charging circuit comprises a forward conversion module, the forward conversion module outputs a first stable current or a second stable current to the energy storage device through a transformer; an energy storage capacitor is electrically connected to an output power supply of the forward conversion module, and the energy storage capacitor is electrically connected to the energy storage device through a control switch; when the output of the charging circuit is switched from the first stable current to the second stable current, the control switch is closed, the energy storage capacitor charges the energy storage device, so as to accelerate the switching process from the first stable current to the second stable current; the energy storage capacitor is electrically connected to an output port of the transformer, the output port of the transformer is allowed to be switched, so as to maintain the voltage of the energy storage capacitor at a preset voltage. The application can generate continuous current and high-quality pulse current, and the charging efficiency is high.

The application discloses an atmospheric water mist polarization power generation device and belongs to the technical field of clean energy power generation. The application solves the problems of the existing renewable energy power generation, such as dependence on light and wind speed, insufficient all-weather capability, low efficiency and difficulty in engineering. The device comprises an atmospheric water mist collection and regulation system, a polarization power generation core array, an electric energy conversion and grid connection system, an intelligent monitoring and protection system and an auxiliary system. The core array adopts 1m*1m standard units in series and parallel connection, and couples four effects of water mist polarization, nanometer pore channel charge separation and the like, so that stable power generation is realized under the environment of RH greater than or equal to 30% and-30 DEG C to +60 DEG C, and the system efficiency is greater than or equal to 18%. The device is suitable for all-weather zero-emission power supply in the scenes of distributed grid-connected / off-grid power stations, remote areas, islands and the like.

The application discloses a kind of automatic polishing device and process of transmission housing, including rotary reciprocating feeding table, product temporary storage table, broken station, deburring station, handling robot and electrical control cabinet and manual reciprocating feeding table, the action arm of the handling robot is equipped with handling gripper;The broken station is composed of tray, hydraulic cylinder and edge trimmer, and the manual reciprocating feeding table is connected with the broken station;The deburring station is composed of four-axis clamp and polishing robot, and the mechanical arm of the polishing robot is provided with polishing gripper.The application uses handling robot to grab loading and unloading, and three actions of punching, edge trimming and breaking can be completed in the working bin of broken station, which is completed once in the broken station, low in cost, high in efficiency, stable in quality, reliable in product consistency and suitable for batch production mode;Using polishing robot can reduce labor intensity, improve product quality, and the appearance of products polished by machine is consistent and stable.