A Control Strategy Based on Small Signal Model for Three-Phase to Single-Phase Matrix Converters

Si Chen; Hongjuan Ge; Wenbin Zhang; Song Lu

A Control Strategy Based on Small Signal Model for Three-Phase to Single-Phase Matrix Converters

Vol. 15, No. 6, pp. 1456-1467, Nov. 2015

10.6113/JPE.2015.15.6.1456

Closed-loop control

Power decoupling

Small signal model

Three-phase to Single-phase Matrix Converter

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Abstract

This paper presents a novel close-loop control scheme based on small signal modeling and weighted composite voltage feedback for a three-phase input and single-phase output Matrix Converter (3-1MC). A small non-polar capacitor is employed as the decoupling unit. The composite voltage weighted by the load voltage and the decoupling unit voltage is used as the feedback value for the voltage controller. Together with the current loop, the dual-loop control is implemented in the 3-1MC. In this paper, the weighted composite voltage expression is derived based on the sinusoidal pulse-width modulation (SPWM) strategy. The switch functions of the 3-1MC are deduced, and the average signal model and small signal model are built. Furthermore, the stability and dynamic performance of the 3-1MC are studied, and simulation and experiment studies are executed. The results show that the control method is effective and feasible. They also show that the design is reasonable and that the operating performance of the 3-1MC is good.

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Cite this article

[IEEE Style]

S. Chen, H. Ge, W. Zhang, S. Lu, "A Control Strategy Based on Small Signal Model for Three-Phase to Single-Phase Matrix Converters," Journal of Power Electronics, vol. 15, no. 6, pp. 1456-1467, 2015. DOI: 10.6113/JPE.2015.15.6.1456.

[ACM Style]

Si Chen, Hongjuan Ge, Wenbin Zhang, and Song Lu. 2015. A Control Strategy Based on Small Signal Model for Three-Phase to Single-Phase Matrix Converters. Journal of Power Electronics, 15, 6, (2015), 1456-1467. DOI: 10.6113/JPE.2015.15.6.1456.