A simplified vector control system without speed and voltage sensors—effect of setting errors of control parameters and their compensation

Okuyama, T.; Fujimoto, Noboru; Fujii, Hiroshi

doi:10.1002/eej.4391100415

Cited by 17 publications

(9 citation statements)

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“…Moreover, q-axis current is controlled by speed feedback. The method proposed by Okuyama et al [39] has been applied for induction machine. The variation of the rotor flux linkage is estimated by observer and updated online.…”

Section: Figure 2 Power Coefficient and Tip Speed Ratio Curvementioning

confidence: 99%

MRAS Tabanlı Çoklu-Parametre Tahmini ile Güçlendirilmiş İleri Beslemeli Stator Gerilim Tahminine Dayanan Sensörsüz Sürekli Mıknatıslı Senkron Generatör Kontrolü

Öztürk

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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A simple and efficient position sensorless control method based on feedforward voltage estimation for PMSG improved with multi-parameter estimation using MRAS is proposed in this paper. The dynamically enhanced stator feedforward dq-axes voltages that are derived from steady-state PMSG model are modified for the sensorless drive. In direct-drive wind turbine systems, because of low back-EMF amplitude in the generator output at very low speed operation, the rotor flux linkage cannot be predicted correctly. Vector control is often used in PMSG control, because it has a simple structure and is suitable for various industrial systems. In the power equation, maximum power is obtained as a function of torque and speed. In the proposed method, a variable-speed wind turbine system with back to back converter structure is connected to common DC-link. In this paper, the proposed sensorless control scheme has been implemented with 1 kW PMSG drive controlled by a TMS320F28335 DSP for low speed at 0.1 p.u. (300 rpm) is achieved under multi-parameter variations. Keywords

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Section: Figure 2 Power Coefficient and Tip Speed Ratio Curvementioning

confidence: 99%

MRAS Tabanlı Çoklu-Parametre Tahmini ile Güçlendirilmiş İleri Beslemeli Stator Gerilim Tahminine Dayanan Sensörsüz Sürekli Mıknatıslı Senkron Generatör Kontrolü

Öztürk

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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“…Okuyama accomplished this by eliminating the PI control on the flux current and using the error in the flux current to adjust the stator resistance [8]. Consider the steady state d-axis stator voltage equation (1).…”

Section: Rs Lmmentioning

confidence: 99%

“…Another approach by Okuyama, Fujimoto, and Fujii adjusts the stator resistance based on the error between the commanded flux current and the feedback component. As indicated in their paper, however, the algorithm is best suited for low frequency operation [8]. Another solution to the corruption of the voltage feedback by the stator resistance has been through reactive power adaptive techniques [9].…”

Section: Introductionmentioning

confidence: 99%

A new flux and stator resistance identifier for AC drive systems

Kerkman¹,

Seibel²,

Rowan³

et al. 1996

IEEE Trans. on Ind. Applicat.

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The effect of stator resistance on AC drive performance is analyzed for flux vector and indirect field oriented controllers. A new technique-the back electromagnetic force (BEMF) detector-for reducing the adverse effects of stator resistance on field oriented control is presented and evaluated through simulation and experimental results. The BEMF detector is shown to reduce the impact of the stator resistance and provides a stator resistance estimate. The detector is compatible with most control strategies and with or without position feedback.

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“…In a transient condition, the slip angular frequency 0, is formulated by equation (10) on the basis of substituting equation (9) to equation (3). As a result,w, can he obtained by According to equation (lo), not only proportional term of torque current component 4, hut also differential term of torque current component i,, will be influenced to W, .…”

Section: T = P M ( I~9~i D -I L D~i )mentioning

confidence: 99%

“…winding windings K , in equation (7) is the gain of slip angular frequency CO,, and is given by the following equation (8). Under these conditions, W, is calculated from the torque current components ilq by rewriting equation (3) and the velocity of induction motor could he coincided wi% the reference value of. the stator frequency adding w, to speed reference W, .…”

Section: T = P M ( I~9~i D -I L D~i )mentioning

confidence: 99%

Sensorless induction motor drive incorporating vector controlled scheme PWM inverter-fed with autotuning machine parameter estimation strategy

Soshin¹,

Okamura²,

Ahmed³

et al.

IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.

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Absiract-This paper presents a feasible development on a highly accurate quick response adjustable speed drive implementation for general purpose induction motor which operates on the basis of sensorless slip frequency type vector controlled sine-wave PWM inverter with an automatic tuning machine parameter estimation schemes. The dynamic speed response performances for largely changed load torque disturbances as well as steady state speed vs. torque characteristics of this induction motor control implementation are illustrated and discussed from an experimental point of new.

show abstract

A simplified vector control system without speed and voltage sensors—effect of setting errors of control parameters and their compensation

Cited by 17 publications

References 0 publications

MRAS Tabanlı Çoklu-Parametre Tahmini ile Güçlendirilmiş İleri Beslemeli Stator Gerilim Tahminine Dayanan Sensörsüz Sürekli Mıknatıslı Senkron Generatör Kontrolü

MRAS Tabanlı Çoklu-Parametre Tahmini ile Güçlendirilmiş İleri Beslemeli Stator Gerilim Tahminine Dayanan Sensörsüz Sürekli Mıknatıslı Senkron Generatör Kontrolü

A new flux and stator resistance identifier for AC drive systems

Sensorless induction motor drive incorporating vector controlled scheme PWM inverter-fed with autotuning machine parameter estimation strategy

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