Design of DC bus voltage high dynamic performance control for single‑phase converters

Xiaowei Zhang; Jiqing Cui; Jinghua Zhou

Design of DC bus voltage high dynamic performance control for single‑phase converters

Xiaowei Zhang

Jiqing Cui

Jinghua Zhou

Vol. 25, No. 3, pp. 480-487, Mar. 2025

10.1007/s43236-024-00907-0

Single-phase inverter

Rapidity

Double-frequency

DC voltage extraction

Abstract

The DC bus voltage in single-phase converters inherently exhibits a second harmonic ripple. To accurately track the current reference value, notch fi lters are typically incorporated into the software control loop for suppression. However, traditional notch filters suff er from slow response times and significant oscillations. This paper presents an enhanced DC bus voltage extraction algorithm that estimates the second harmonic component in the DC bus voltage using system parameters and variables, without modifying the basic circuit structure or adding additional notch filters to the bus voltage control loop. By redesigning the voltage outer loop, the algorithm aims to reduce the overshoot and oscillations during voltage adjustments, improving the response speed. When integrated with a quasi-PR regulator-based current inner loop, this dual-loop control strategy effectively minimizes the overshoot and oscillations during voltage adjustments, enhances the response speed, and improves system stability. The effectiveness and validity of the proposed control strategy are demonstrated through MATLAB simulations and prototype experiments.

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Cite this article

[IEEE Style]

X. Zhang, J. Cui, J. Zhou, "Design of DC bus voltage high dynamic performance control for single‑phase converters," Journal of Power Electronics, vol. 25, no. 3, pp. 480-487, 2025. DOI: 10.1007/s43236-024-00907-0.

[ACM Style]

Xiaowei Zhang, Jiqing Cui, and Jinghua Zhou. 2025. Design of DC bus voltage high dynamic performance control for single‑phase converters. Journal of Power Electronics, 25, 3, (2025), 480-487. DOI: 10.1007/s43236-024-00907-0.