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Energy storage voltage-sharing charge and discharge control system for super capacitor set and charged state estimation method

A supercapacitor group, charge and discharge control technology, applied in charge equalization circuits, battery circuit devices, safety/protection battery circuits, etc., can solve the problem of large capacity error of supercapacitor cells

Active Publication Date: 2016-07-20
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Application Information

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Problems solved by technology

[0005] Aiming at the problems in the prior art such as the relatively large error in the capacity of a single supercapacitor, the present invention proposes a supercapacitor bank energy storage voltage equalization charge and discharge control system and a method for estimating the state of charge

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  • Energy storage voltage-sharing charge and discharge control system for super capacitor set and charged state estimation method
  • Energy storage voltage-sharing charge and discharge control system for super capacitor set and charged state estimation method
  • Energy storage voltage-sharing charge and discharge control system for super capacitor set and charged state estimation method

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Embodiment Construction

[0078] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0079] The invention provides a supercapacitor bank energy storage voltage equalization charging and discharging control system, such as figure 1 As shown, the microprocessor control module 1, the switch drive module 3, the supercapacitor switch array module 4, the supercapacitor array module 5, and the DC charging power supply module 7 are connected in sequence, and the supercapacitor array module 5, the supercapacitor bank measurement module 2, and the SOC The module 8, the human-computer interaction module 6, and the microprocessor control module 1 are connected in sequence, and the supercapacitor group measurement module 2 and the SOC module 8 are respectively connected to the microprocessor control module 1.

[0080] figure 2 It is the overall structure of the supercapacitor bank hierarchical voltage balance. In the figure, the whole capacitor is divided into p sub-...

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Abstract

The invention belongs to the technical field of energy storage control of a power system, and especially relates to an energy storage voltage-sharing charge and discharge control system for a super capacitor set and a charged state estimation method. The system comprises a microprocessor control module, a super capacitor set measuring module, a switch driving module, a super capacitor switch array module, a super capacitor array module, a man-machine interaction module, a DC charging power module and a SOC module. The method comprises the steps of obtaining an observed value through an observation equation based on state prediction and minimum mean squared error estimation, and correcting real state variables. Information is obtained through sensors based on probability theory and circuit theory, and the optimal working state of an entire super capacitor set energy storage system is ensured through the control strategy and SOC state estimation, so that the system charges and discharges safely. Compared with conventional super capacitor array charging and discharging technology, the system is simple, effective, rapid and energy-saving. Reference for maintaining super capacitor arrays is also provided.

Description

technical field [0001] The invention belongs to the technical field of power system energy storage control, and in particular relates to a supercapacitor bank energy storage voltage equalization charging and discharging control system and a charge state estimation method. Background technique [0002] Supercapacitor is a new type of electric energy storage device that appeared at the beginning of this century. The capacitance of a supercapacitor is extremely large, up to thousands of farads. It not only has the advantage of high discharge power of an electrostatic capacitor, but also has a large charge storage capacity like a battery. In addition, supercapacitors also have the advantages of flexible capacity configuration, easy modular design, long cycle life, wide operating temperature range, environmental friendliness, and maintenance-free, making them more suitable for harsh working environments. [0003] Due to the low terminal voltage of supercapacitors in existing cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00G06F17/11G06F17/16
CPCG06F17/11G06F17/16H02J7/0019H02J7/0026H02J7/345
Inventor 李岩松刘君
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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