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This paper presents an extended back electromotive force (EMF)-based discrete sliding-mode observer (SMO) for rotor position/speed sensorless control of interior permanent magnet synchronous machines (IPMSMs). Normally, the dead-time effects in voltage source inverters are often ignored or assumed to be fully compensated when designing a position observer. However, for high-voltage and high-power...
Robust rotor position observer is one of the key issues in the position sensorless interior permanent magnet synchronous machine (IPMSM) drive system design. Several model-based observers have been proposed to estimate rotor position and speed without mechanical sensors. However, because of unmodeled nonlinearities, e.g., inverter dead-time effect, inductance cross saturation, as well as other machine...
Sliding-mode observers (SMOs) offer a promising solution for sensorless control of interior permanent magnet synchronous machines (IPMSMs) due to their excellent robustness to system structure and parameter uncertainty. However, in practical applications, it is challenging for an SMO to achieve a perfect estimation for the back electromagnetic force (EMF) using a finite or relatively lower sampling...
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