Projection value‑based smooth adaptive control strategy of single‑phase DC‑AC converters

Wenxun Xiao; Huiting Huang; Jiankun Mao; Fan Xie; Bo Zhang; Yanfeng Chen; Dongyuan Qiu

Projection value‑based smooth adaptive control strategy of single‑phase DC‑AC converters

Vol. 24, No. 4, pp. 529-539, Apr. 2024

10.1007/s43236-024-00768-7

Smooth projection adaptive strategy

DC-AC converter

Sampled-data based switching law

Abstract

State-space modeling is often used to design power converters so that the performance of the closed-loop control system can meet design requirements. However, single-phase DC-AC converters based on constant state feedback control have some issues, including long response times and unpredictable robustness. To solve these problems, a novel control strategy based on state feedback control (SFC), called the smooth projection adaptive strategy (SPAS), is developed by adaptively changing the state feedback coefficient according to the projection value of the system. First, a state space model of the DC-AC converter with the adaptive state feedback control law is established. Then based on the SPAS and considering parameters perturbation, two control laws named current-mode control (CMC) and voltage-mode control (VMC) are proposed, and their robustness are further discussed. Furthermore, the design method of the proposed control system in the digital control framework is presented. Finally, experiments on a 400 W prototype, and comparative analyses among the proposed control laws and the conventional PI control method are carried out. The results show that the proposed CMC has apparent superiority in terms of both static and dynamic performance.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

W. Xiao, H. Huang, J. Mao, F. Xie, B. Zhang, Y. Chen, D. Qiu, "Projection value‑based smooth adaptive control strategy of single‑phase DC‑AC converters," Journal of Power Electronics, vol. 24, no. 4, pp. 529-539, 2024. DOI: 10.1007/s43236-024-00768-7.

[ACM Style]

Wenxun Xiao, Huiting Huang, Jiankun Mao, Fan Xie, Bo Zhang, Yanfeng Chen, and Dongyuan Qiu. 2024. Projection value‑based smooth adaptive control strategy of single‑phase DC‑AC converters. Journal of Power Electronics, 24, 4, (2024), 529-539. DOI: 10.1007/s43236-024-00768-7.