Power supply energy storage device

Abstract

The invention relates to a power supply energy storage device, and the device comprises an energy storage unit which is electrically connected to a common connection point between a power supply and aload, and is used for storing the output electric energy of at least part of the power supply or supplying power to the load; a signal conversion unit which is electrically connected between the energy storage unit and the common connection point and is used for converting the alternating current signal output by the power supply into a direct current signal and inputting the direct current signal into the energy storage unit, or converting the direct current signal output by the energy storage unit into an alternating current signal and inputting the alternating current signal into a load; and a control unit which is used for controlling the output power of the signal conversion unit based on the output parameter of the power supply and the input parameter of the load. The control unit controls the output power of the signal conversion unit; therefore, the energy storage unit absorbs or releases electric energy according to a power smoothing algorithm, the later use cost is reduced,the dynamic performance of the power supply when the external load changes can be improved, the power supply can be matched with various power supplies such as various types of diesel generating sets,and the capacity and power can be adjusted according to actual requirements.

Description

technical field [0001] The invention relates to the field of power supplies, in particular to a power supply energy storage device. Background technique [0002] Diesel generator set is a kind of temporary power supply widely used at present. It has the effect of stable performance and easy use. Because of its low initial investment, it is widely used, such as areas without electricity, mines, temporary power supply for construction, and important load backup. Diesel generator sets are used in power supply, marine electricity and other occasions. The "fuel consumption rate" of diesel generator sets is a key item in the performance indicators of diesel generator sets, and it is also an indicator that users are very concerned about. It is directly related to the life time of diesel generator sets and the fuel consumption cost in the later period. [0003] Generally, the "fuel consumption rate" declared by diesel generator set manufacturers is the fuel consumption rate of the ...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a power storage device with an economical load rate for maintaining the voltage, aiming at the problem that the voltage and frequency stability of the temporary power output is affected due to the sudden increase and decrease of the load during application. Reduce the fuel consumption rate of the power supply, reduce the cost of later use, and improve the dynamic performance of the power supply when the external load changes

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