New “D-State-Observer”-Based Vector Control for Sensorless Drive of Permanent-Magnet Synchronous Motors

Tuovinen, T. (2018)Abstract-This paper deals with the speed and position estimation for synchronous reluctance motors (SyRMs) and interior permanent-magnet synchronous motors (IPMs). A unified design and analysis framework for a class of back-electromotive-force (back-EMF)-based observers is developed and the links between apparently different estimation methods are brought out. State observers equipped with a speed-adaptation law are shown to be mathematically equivalent to voltage-model-based flux observers equipped with a position-tracking loop. The error signal driving the adaptation law or the tracking loop is presented in a generalized form. Using the framework, a stabilizing gain design is reviewed and detailed design guidelines are given. Selected observer designs are experimentally evaluated using a 6.7-kW SyRM drive and a 2.2-kW IPM drive.

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“…The change of the state variable,î = L −1 (ψ − ψ f ), reveals that (17a) is mathematically equivalent to (6) …”

Section: Equivalent Structures and Existing Designsmentioning

confidence: 99%

“…A state observer, operating in estimated rotor coordinates, is augmented with a speed-adaptation loop in [4], [5]. In order to simplify the gain selection, a modified state variable is used to form a D-state observer in [6] and a minimum-order flux observer in [7].…”

Section: Introductionmentioning

confidence: 99%

Observers for Sensorless Synchronous Motor Drives: Framework for Design and Analysis

Hinkkanen

Saarakkala

Awan

et al. 2018

IEEE Trans. on Ind. Applicat.

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“…An off-line detection method called "D-the Module" flux observation method was proposed in Ref. [48]; the method can respond to a change in the permanentmagnet chain. An improved back-electromotive force (EMF) method was presented in Ref.…”

Section: Condition Monitoring Of Rotors Of Pmsgsmentioning

confidence: 99%

“…Off-line detection methods [48] The method of "D-the Module" flux observation was proposed. The method can respond to the changing flux linkage, but it can only observe fluctuations in the flux amplitude in a fixed direction [49] An improved back-EMF method was proposed.…”

Section: Supervisory Control and Data Acquisition (Scada)mentioning

confidence: 99%

Overview of condition monitoring and operation control of electric power conversion systems in direct-drive wind turbines under faults

Huang

Xiao

et al. 2017

Front. Mech. Eng.

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Electric power conversion system (EPCS), which consists of a generator and power converter, is one of the most important subsystems in a direct-drive wind turbine (DD-WT). However, this component accounts for the most failures (approximately 60% of the total number) in the entire DD-WT system according to statistical data. To improve the reliability of EPCSs and reduce the operation and maintenance cost of DD-WTs, numerous researchers have studied condition monitoring (CM) and fault diagnostics (FD). Numerous CM and FD techniques, which have respective advantages and disadvantages, have emerged. This paper provides an overview of the CM, FD, and operation control of EPCSs in DD-WTs under faults. After introducing the functional principle and structure of EPCS, this survey discusses the common failures in wind generators and power converters; briefly reviewed CM and FD methods and operation control of these generators and power converters under faults; and discussed the grid voltage faults related to EPCSs in DD-WTs. These theories and their related technical concepts are systematically discussed. Finally, predicted development trends are presented. The paper provides a valuable reference for developing service quality evaluation methods and fault operation control systems to achieve high-performance and high-intelligence DD-WTs.

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“…The current or the stator flux has been used as a state variable of the observer [3]- [8]. An observer design using the stator flux error as a state variable has also been proposed [9]. The structure of the observer becomes more complicated if an extended EMF [10] is selected as a state variable.…”

Section: Introductionmentioning

confidence: 99%

Analysis of an Adaptive Observer for Sensorless Control of Interior Permanent Magnet Synchronous Motors

Piippo¹,

Hinkkanen²,

Luomi³

2008

IEEE Trans. Ind. Electron.

176

110

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Abstract-This paper deals with a speed and position estimation method for the sensorless control of permanent magnet synchronous motors. The method is based on a speed-adaptive observer. The dynamics of the system are analyzed by linearizing both the motor model and the observer, and the observer gain is selected to give improved damping and noise suppression. At low speeds, the observer is augmented with a signal injection technique, providing stable operation down to zero speed. The experimental results, obtained using a 2.2-kW interior magnet motor, are in agreement with the results of the analysis.

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New “D-State-Observer”-Based Vector Control for Sensorless Drive of Permanent-Magnet Synchronous Motors

Cited by 45 publications

References 8 publications

Observers for Sensorless Synchronous Motor Drives: Framework for Design and Analysis

Observers for Sensorless Synchronous Motor Drives: Framework for Design and Analysis

Overview of condition monitoring and operation control of electric power conversion systems in direct-drive wind turbines under faults

Analysis of an Adaptive Observer for Sensorless Control of Interior Permanent Magnet Synchronous Motors

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