Abstract
The commonly used converter topology in the flywheel energy storage system(FESS) is the back-to-back converter. However, due to the intermediate DC link electrolytic capacitor, the converter is bulky. The electrolytic capacitor also brings problems such as DC voltage control, life and maintenance cost. To solve the above problems, the matrix converter is used to drive the FESS and the benefits of the matrix converter can be effectively integrated into FESS, avoiding the issues associated with the back-to-back converter. Based on the theoretical analysis of the system principle and considering the limit of voltage transfer ratio of the matrix converter, the operating range of the matrix converter-based FESS is derived. The relationship between the FESS system power and flywheel velocity is obtained by theoretical analysis, and then the FESS control is realized by the scheme of the outer speed control loop combined with the inner current control loop. The model predictive control is employed for the inner control loop to control the matrix converter, thus realizing the charging and discharging control of FESS. The correctness of the operating range analysis and the effectiveness of the proposed control strategy are verified by the simulation results obtained in Matlab/Simulink.
| Translated title of the contribution | Model Predictive Control Strategy of Flywheel Energy Storage System Based on Matrix Converter |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 26-33 |
| Number of pages | 8 |
| Journal | Journal of Electrical Engineering (China) |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jun 2024 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electrical and Electronic Engineering