Comparative study of a sliding-mode observer and Kalman filters for full state estimation in an induction machine

Chen, F.; Dunnigan, Matthew W.

doi:10.1049/ip-epa:20020018

Cited by 120 publications

(42 citation statements)

References 10 publications

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“…Incorrect covariance matrices will reduce the robustness to parameter uncertainty and external noise [69]. The practical implementation of Extended Kalman Filter (EKF) involves significant numerical complexity [69]. The traditional sliding mode observer has no robustness to uncertainty in system parameters.…”

Section: Thesis Objectivesmentioning

confidence: 99%

“…The Kalman filter robustness to parameter uncertainty depends on the accurate value of the process and the measurement noise covariance matrices. Incorrect covariance matrices will reduce the robustness to parameter uncertainty and external noise [69]. The practical implementation of Extended Kalman Filter (EKF) involves significant numerical complexity [69].…”

Section: Thesis Objectivesmentioning

confidence: 99%

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Sliding mode observation of capacitor voltage in multilevel power converters

Almaleki

Wheeler

Clare

2010

5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010)

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Smart power supply grids may be required to link future energy production and consumers.Multilevel converters are a building block for smart grids. There are several structures of multilevel converters, for example the Neutral Point Clamped (NPC), the Flying Capacitor Circuit and the Cascaded H-Bridge (CHB) converter. The modular structure of the CHB multilevel converter makes it one of the best options for smart grids. Using modular converter structures reduces production and maintenance costs.Implementation of efficient and fast controllers for multilevel converters requires accurate measurement of the voltages and currents for the system feedback loops. Knowledge of the DC link voltages is necessary to construct voltage control loops. In a typical CHB multilevel converter there are many DC links which means that a lot of voltage transducers maybe required.Voltage transducers at medium voltage are not easy to implement and add to system cost. This thesis presents an efficient way to observe the DC link voltages and hence eliminate the cost associated with voltage transducers. A "Sliding Mode Observer (SMO) using the Equivalent Control Method" has been chosen because of its robustness against system uncertainties.Simulation and practical work has been performed on a three-phase, three-cell multilevel converter to validate the use of this observer.ii

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Section: Thesis Objectivesmentioning

confidence: 99%

Section: Thesis Objectivesmentioning

confidence: 99%

Sliding mode observation of capacitor voltage in multilevel power converters

Almaleki

Wheeler

Clare

2010

5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010)

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“…And, in order to reduce torque ripple, the expected voltage vector linear combination are established by two adjacent non-zero switching voltage vectors and zero voltage vectors. Take the example of figure 2, when * s u is in sector I, the adjacent non-zero voltage vectors 4 U , 6 U and zero voltage vectors should be selected. The action time of the non-zero voltage vector and the zero vector as shown in formula (8).…”

Section: The Basic Principle Of Svpwm-dtcmentioning

confidence: 99%

Application of a new speed control strategy in Tank Gun Control System

Zhou¹,

Liu²,

Lin³

et al. 2017

Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017)

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“…In addition, sliding mode techniques have advantages over Kalman filter approaches for electric power systems. One of these advantages is that robustness of the sliding-mode observer to parameter uncertainties and external noise can be guaranteed [26,27]. State estimation and sliding mode control for a special class of stochastic dynamic systems, semi Markovian jump systems, is presented in [28].…”

Section: Introductionmentioning

confidence: 99%

Robust sliding‐mode observers for large‐scale systems with application to a multimachine power system

Mohamed

Yan

Spurgeon³

et al. 2017

IET Control Theory & Applications

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In this paper, a class of interconnected systems with structured and unstructured uncertainties is considered where the known interconnections and uncertain interconnections are nonlinear. The bounds on the uncertainties are employed in the observer design to enhance the robustness when the structure of the uncertainties is available for design. Under the condition that the structure distribution matrices of the uncertainties are known, a robust sliding mode observer is designed and a set of sufficient conditions is developed to guarantee that the error dynamics are asymptotically stable. In the case that the structure of uncertainties is unknown, an ultimately bounded approximate observer is developed to estimate the system states using sliding mode techniques. The results obtained are applied to a multimachine power system, and simulation for a two machine power system is presented to demonstrate the feasibility and effectiveness of the developed methods.

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Comparative study of a sliding-mode observer and Kalman filters for full state estimation in an induction machine

Cited by 120 publications

References 10 publications

Sliding mode observation of capacitor voltage in multilevel power converters

Sliding mode observation of capacitor voltage in multilevel power converters

Application of a new speed control strategy in Tank Gun Control System

Robust sliding‐mode observers for large‐scale systems with application to a multimachine power system

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