An Exponential Reaching Law Sliding Mode Observer for PMSM in Rotating Frame
نویسنده
چکیده
Abstract: In order to solve chattering problem of conventional sliding mode observer (SMO), this paper proposes a exponential reaching law sliding mode observer (ERL-SMO) for a permanent magnet synchronous motor (PMSM) which substitutes exponential reaching law for constant reaching law. The ERL-SMO estimates the rotor position and the angular velocity from the back electromotive force (EMF) based on rotating frame instead of fixed frame. A phase locked loop (PLL) replaces low-pass filter which commonly leads to a phase delay. The stability of the proposed exponential reaching law was verified using the Lyapunov function. The simulation results show that ERL-SMO hasn’t only achieved a precise identification of PMSM speed and position, but also significantly weakened the signal chattering.
منابع مشابه
An Improved Flux Observer for Sensorless Permanent Magnet Synchronous Motor Drives with Parameter Identification
This paper investigates an improved stator flux linkage observer for sensorless permanent magnet synchronous motor (PMSM) drives using a voltage-based flux linkage model and an adaptive sliding mode variable structure. We propose a new observer design that employs an improved sliding mode reaching law to achieve better estimation accuracy. The design includes two models and two adaptive estimat...
متن کاملPMSM Sliding Mode Control Based on a Reaching law
The speed loop of the AC servo system used to apply PI control method, it makes the system vulnerable to the volatile motor parameters and load disturbances. Sliding mode control(SMC) has successfully overcome the above-mentioned defects of PI control method and is expected to be widely used in high-performance servo systems. The id=0 control method is adopted in this paper and a reaching law s...
متن کاملA Current-Based Output Feedback Sliding Mode Control for Speed Sensorless Induction Machine Drive Using Adaptive Sliding Mode Flux Observer
This paper presents a new adaptive Sliding-Mode flux observer for speed sensorless and rotor flux control of three-phase induction motor (IM) drives. The motor drive is supplied by a three-level space vector modulation (SVM) inverter. Considering the three-phase IM Equations in a stator stationary two axis reference frame, using the partial feedback linearization control and Sliding-Mode (SM) c...
متن کاملNew Adaptive Sliding-mode Observer Design for Sensorless Control of Pmsm in Electric Vehicle Drive System
In this study, a new adaptive sliding-mode observer is proposed to estimate the rotor position and speed for sensorless control of permanent-magnet synchronous motor (PMSM) in an electric vehicle drive system. This observer can effectively reduce the estimation errors caused by the inherent chattering phenomenon for a conventional sliding-mode observer and the stator resistance uncertainty due ...
متن کاملAn Adaptive Nonlinear Controller for Speed Sensorless PMSM Taking the Iron Loss Resistance into Account (RESEARCH NOTE)
In this paper, an adaptive nonlinear controller is designed for rotor Surface Permanent Magnet Synchronous Motor (SPMSM) drive on the basis of Input-Output Feedback Control (IOFC), and Recursive Least Square (RLS) method. The RLS estimator detects the motor electromechanical parameters, including the motor iron loss resistance online. Moreover, a Sliding-Mode (SM) observer is developed for onli...
متن کامل