RT Journal Article T1 Enhanced DC-Link Voltage Utilization for Sliding-Mode-Controlled PMSM Drives A1 Repecho, Victor A1 Sierra-Gonzalez, Andres A1 Ibarra, Edorta A1 Biel, Domingo A1 Arias, Antoni AB Sliding mode control (SMC) can be considered for torque regulation of permanent magnet synchronous machines (PMSMs) when fast transient response and/or robustness under parameter uncertainties are required. In some particular applications, a voltage harmonic injection technique that enhances the dc-link voltage utilization should be incorporated into the controller to operate at high speeds. Although this is straightforward for pulsewidth modulated (PWM) drives, a convenient definition of the sliding surfaces and an appropriate injection procedure must be implemented when using SMC. In this work, a novel approach to generate zero-sequence voltage harmonic injection in surface-mounted (SM) PMSM drives controlled by a fixed switching frequency first-order SMC is proposed. A theoretical analysis is provided verifying the sliding mode existence and demonstrating the system stability when the sliding mode is reached. Finally, experimentation is carried out in an off-the-shelf PMSM drive, where two voltage injection patterns are tested. In both cases, the dc-link voltage utilization is extended by a 15%, confirming the validity of the proposal. SN 2168-6777 YR 2021 FD 2021-06 LA eng NO Repecho , V , Sierra-Gonzalez , A , Ibarra , E , Biel , D & Arias , A 2021 , ' Enhanced DC-Link Voltage Utilization for Sliding-Mode-Controlled PMSM Drives ' , IEEE Journal of Emerging and Selected Topics in Power Electronics , vol. 9 , no. 3 , 9141274 , pp. 2850-2857 . https://doi.org/10.1109/JESTPE.2020.3009522 NO Publisher Copyright: © 2013 IEEE. NO Manuscript received March 30, 2020; revised June 5, 2020; accepted June 27, 2020. Date of publication July 15, 2020; date of current version May 28, 2021. This work was supported in part by the Government of Spain through the Agencia Estatal de Investigación under Project DPI2017-85404-P, in part by the Generalitat de Catalunya under Project 2017 SGR 872, in part by the European Commission within the EU H2020 Project FITGEN under Grant Agreement 824335, and in part by the Government of the Basque Country within the fund for research groups of the Basque University System IT978-16 and within the research program ELKARTEK as the project ENSOL2 under Grant KK-2020/00077. Recommended for publication by Associate Editor Dian Guo Xu. (Corresponding author: Víctor Repecho.) Víctor Repecho, Domingo Biel, and Antoni Arias are with the Institute of Industrial and Control Engineering, Universitat Politècnica de Catalunya, 08034 Barcelona, Spain (e-mail: victor.repecho.del@upc.edu; domingo.biel@upc.edu; antoni.arias@upc.edu). DS TECNALIA Publications RD 2 sept 2024