Design and real-time implementation of a sliding mode observer utilizing voltage signal injection and PLL for sensorless control of IPMSMs

Autor: Ertugrul Ates, Burak Tekgun, Gunyaz Ablay, Murat Barut
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Engineering Science and Technology, an International Journal, Vol 59, Iss , Pp 101873- (2024)
Druh dokumentu: article
ISSN: 2215-0986
DOI: 10.1016/j.jestch.2024.101873
Popis: In this study, a sliding mode observer (SMO) based on high-frequency (HF) voltage signal injection and a phase-locked loop (PLL) is proposed for estimating the extended electromotive force (EEMF), rotor position, and rotor velocity of an interior permanent magnet synchronous machine (IPMSM). This approach addresses real-time estimation challenges associated with standard SMO and PLL at very low speeds and standstill. A reliable and accurate sensorless speed control system for IPMSM is then developed and implemented in real time using the proposed SMO and PLL, covering a wide range of speeds, including low-speed and standstill conditions. The SMO effectively estimates the EEMF, while the PLL extracts the rotor velocity and position based on these estimates. Compared to conventional SMO and PLL methods, real-time results from an 8-pole, 0.4 kW IPMSM demonstrate the superior efficiency of the proposed system.
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