What is the role of supercapacitor modules?

What is the role of supercapacitor modules?

The modular technology of supercapacitors is a key technology in supercapacitor energy storage systems, which is of great significance in improving the efficiency and energy utilization of supercapacitor energy storage systems, and enhancing the reliability of energy storage systems. This article conducts in-depth research on the model and parameter identification method of supercapacitors, energy transfer voltage balancing technology of supercapacitors, modular technology of small and medium power supercapacitors, and modular technology of supercapacitors in the field of strong pulse discharge applications.

On the basis of in-depth analysis of existing models, a new method for identifying model parameters of supercapacitors in small and medium power and strong pulse discharge applications is proposed, which expands the application range of the model and verifies it through simulation and experiments. And combined with the model of supercapacitors, the relationship between the charging and discharging current, charging and discharging time interval, and supercapacitor losses was analyzed and discussed.

A series voltage balancing control model for energy transfer type supercapacitors was proposed, using capacitors and inductors as energy storage devices for voltage balancing of supercapacitors. Voltage balancing methods for flyover capacitors and inductors were proposed, and parameter determination principles and control strategies for voltage balancing methods for single flyover capacitors and multiple flyover containers were provided, The average inductance energy storage voltage balancing method and the adjacent comparison inductance energy storage voltage balancing method were proposed. In the article, simulation analysis and experiments were conducted on the voltage balancing methods of flying capacitors and inductive energy storage, and a comparative analysis was conducted on these voltage balancing methods. Their technical characteristics and applicable scenarios were given.

Based on the characteristics of low-power supercapacitor energy storage modules, in-depth research was conducted on switch resistor voltage balancing methods and series parallel switching techniques. A topology structure of low-power supercapacitor modules using switch resistor voltage balancing circuits and series parallel switching circuits was proposed. A mathematical model for the charging loss of the switch resistor voltage balancing module during the charging process was established, and a parameter design method for a low loss switch resistor voltage balancing circuit was proposed. It can ensure the reliable operation of the supercapacitor module while reducing the loss of voltage balancing.

A classification scheme for supercapacitor voltage balancing technology modules is proposed based on the characteristics of medium power supercapacitor energy storage modules, which solves the problems of slow voltage balancing speed, low efficiency, and difficult power supply in medium power voltage balancing circuits. Based on this scheme, two hierarchical voltage balancing topologies were proposed, namely the combination of inductance and flying capacitor, and the combination of inductance and switch resistance. Simulation analysis and experiments were conducted separately.

The feasibility of applying supercapacitors in the field of strong pulse discharge was analyzed and studied. A supercapacitor module model for strong pulse discharge applications was established, and a management plan for the supercapacitor energy storage system was provided. A method of using supercapacitors instead of high-voltage pulse capacitors as energy storage devices to establish a strong pulse magnetic field was proposed in the application design of explosive magnetohydrodynamic generators. The strong pulse discharge simulation analysis was conducted on the supercapacitor module and the high-voltage pulse capacitor module, and the simulation results were compared. Finally, the strong pulse discharge performance of the supercapacitor was experimentally verified.