Fault tolerance for PWM rectifiers based on basic voltage space vector model

Chao Sun; Yingning Qiu

Fault tolerance for PWM rectifiers based on basic voltage space vector model

Chao Sun

Yingning Qiu

Vol. 22, No. 7, pp. 1112-1119, Jul. 2022

10.1007/s43236-022-00420-2

Open circuit faults

Basic voltage space vector model

Fault Tolerance

Reconstructed basic voltage space vectors

Abstract

A new basic voltage space vector model-based fault tolerance method from new perspective of vector reconstruction for generator side converter open circuit faults is proposed in this paper. In the space vector model, changes of voltage space vectors under single and multiple switch open-circuit fault conditions are summarized in mathematical expressions. The corrected voltage space vectors under fault conditions are essentially linear superpositions of normal voltage space vectors and the changes introduced by their corresponding faulty switches. The new fault tolerance method, which is developed based on a basic voltage vector model, uses reconstructed basic voltage space vectors to compensate the reference voltage vector. It realizes full-scale fault-tolerant compensation. The feasibility and superiority of the proposed fault-tolerant method are tested and compared on an experimental platform. The achieved superior system performance of the proposed fault tolerance method sufficiently demonstrates its effectiveness as well as the voltage vector deviation principle presented in this paper. It provides important insights into the fault tolerance control of power converters.

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Cite this article

[IEEE Style]

C. Sun and Y. Qiu, "Fault tolerance for PWM rectifiers based on basic voltage space vector model," Journal of Power Electronics, vol. 22, no. 7, pp. 1112-1119, 2022. DOI: 10.1007/s43236-022-00420-2.

[ACM Style]

Chao Sun and Yingning Qiu. 2022. Fault tolerance for PWM rectifiers based on basic voltage space vector model. Journal of Power Electronics, 22, 7, (2022), 1112-1119. DOI: 10.1007/s43236-022-00420-2.