5results about How to "Stabilize bus voltage" patented technology

The application relates to a crimping IGBT three-level power unit structure based on phase change cooling, wherein a phase change cooling power assembly and a supporting capacitor assembly are arranged in sequence from front to back, a three-level valve string is horizontally placed, power devices are arranged between adjacent phase change cooling radiators, the phase change cooling radiators are vertically placed, phase change working medium connecting pipes are arranged at the upper part and the lower part of the three-level valve string, a valve string direct current connection row is arranged at the rear end of the three-level valve string, the connection terminals of the valve string direct current connection row are located above the three-level valve string and are in a leading direction, an output row is arranged at the front end of the three-level valve string, and the connection terminals of the output row are located on the side of the three-level valve string. The application has the advantages that the valve string direct current connection row and the valve string capacitor connection row of the supporting capacitor assembly are overlapped on the top between the phase change cooling power assembly and the supporting capacitor assembly, the connection terminals of the valve string capacitor connection row are in a leading direction, the phase change cooling power assembly can be disassembled on the front side of a cabinet body, and maintenance is easy.

The invention relates to a photovoltaic output control method for an energy storage system, and the method comprises the steps: setting a photovoltaic panel to be connected with a load to form a power loop and connected with a battery to form a charging and discharging loop, enabling the power loop and the charging and discharging loop to be connected to a bus in parallel, obtaining the operation data of a photovoltaic energy storage off-grid system, and carrying out the control of the photovoltaic output of the photovoltaic energy storage off-grid system based on the operation data and battery parameters. And determining an expected output power upper limit, an expected output power lower limit and actual operation power of MPPT control, increasing the bus voltage by adopting a positive step length under the condition that the actual operation power is smaller than the expected output power lower limit, and reducing the bus voltage by adopting a negative step length under the condition that the actual operation power is larger than the expected output power upper limit. According to the invention, the problem of low energy utilization rate of the optical storage system is solved, the upper and lower limits of the expected output power are determined through the operation data and the battery parameters, battery overcharge is avoided, and the energy utilization rate is improved under the condition of ensuring battery safety.

This invention relates to the field of control technology for hybrid compressed air and flywheel energy storage, and particularly to a method and system for coordinated power control of impulsive loads in an islanded microgrid. The method includes the following steps: real-time monitoring of the microgrid bus power and calculation of the bus power change rate; when the bus power change rate is greater than a first preset threshold, controlling the output power of the flywheel energy storage system to smooth power fluctuations caused by impulsive loads; when the bus power change rate is less than a second preset threshold, implementing a coordinated control strategy for the compressed air energy storage system and the flywheel energy storage system; when the bus power change rate is less than the first preset threshold but greater than the second preset threshold, controlling the compressed air energy storage system to handle normal load fluctuations, and controlling the flywheel energy storage system to operate continuously. This invention achieves smooth power switching through the balanced adjustment of the compressed air energy storage system and the flywheel energy storage system, effectively maintaining the stability of the microgrid bus voltage and frequency.

The invention relates to the technical field of unmanned aerial vehicle power distribution, and particularly discloses a hybrid power unmanned aerial vehicle power distribution device and method, and the device comprises an energy management module which comprises an energy management computer, a pair of battery management units, and a pair of generator controllers; the pair of bus bars are used for collecting energy output by the pair of high-voltage battery packs and the pair of generators, the two bus bars are connected through a first contactor, and each bus bar is provided with a plurality of load interfaces; the load management module comprises a plurality of load management units, the input end of each load management unit is connected with one load interface, and the output port of each load management unit is connected with one load; and the communication module is respectively connected with the flight management computer and the electric load through a communication bus. The generator is used as a main power supply, the bus voltage is maintained through voltage stabilization control of the generator controller, and the high-voltage battery pack is used as a current following assembly, so that the stability of the bus voltage is ensured, and the quick response characteristic of the high-voltage battery pack can be reasonably utilized.

This invention relates to a rule-based coordinated control method for wave energy independent power generation, storage, and utilization in a wave energy independent power generation system. It is applicable to the fields of wave energy power generation and electrochemical energy storage. The technical solution adopted in this invention is: a rule-based coordinated control method for wave energy independent power generation, storage, and utilization in a wave energy independent power generation system, characterized in that: the wave energy independent power generation system includes a power generation unit, an energy storage unit, an energy consumption unit, and a system coordination controller; the power generation unit includes a power generation branch, a power consumption branch, and a power generation unit controller; the energy storage unit includes an energy storage branch and an energy storage unit controller; the energy consumption unit includes a non-self-consumption AC / DC load branch and a load controller; the power generation branch of the power generation unit is connected to the power consumption branch, the energy storage branch, and the non-self-consumption AC / DC load branch via a DC bus.