• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2023, Vol. 44 ›› Issue (2): 110-121.doi: 10.12204/j.issn.1000-7229.2023.02.011

• New Energy Power Generation • Previous Articles     Next Articles

Control System of Photovoltaic Energy Storage Quasi-Z-source Grid-connected Inverter Applying Lyapunov Control Strategy

ZHENG Huaihua1(), MAO Yu1(), CHENG Qiming2(), CHEN Haiyan3()   

  1. 1. Zhejiang Power Transmission and Transformation Engineering Co., Ltd., Hangzhou 310016, China
    2. College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China
    3. Shanghai Automation Instrument Co., Ltd., Shanghai 200070, China
  • Received:2022-07-17 Online:2023-02-01 Published:2023-01-30
  • Supported by:
    National Natural Science Foundation of China(61905139)


The use of energy storage quasi-Z-source inverter (qZSI) in photovoltaic power generation can reduce power fluctuations, but for nonlinear energy storage qZSI, linear PI control strategy is often used, which is difficult to achieve the ideal control performance. Therefore, an energy storage qZSI control system based on nonlinear Lyapunov control is proposed in this paper. Firstly, the energy management system of energy storage unit is designed to meet load power requirement. Then, according to Lyapunov theory, the energy storage function and control law are designed for energy storage qZSI system, and the appropriate Lyapunov control gain is selected. Finally, on Matlab/Simulink simulation platform, the performance of Lyapunov control system and traditional PI control system are simulated and compared under four different working conditions. The results show that Lyapunov control system has faster response, higher control accuracy and stronger robustness.

Key words: photovoltaic, energy storage qZSI, energy management system, Lyapunov control, PI control

CLC Number: