Direct Current Control of a Synchronous Machine in Field Coordinates

Nemec, Mitja; Drobnic, Klemen; Nedeljkovic, D.; Ambrozic, V.

doi:10.1109/tie.2009.2028354

Cited by 34 publications

(14 citation statements)

References 30 publications

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“…In reality, both resistances and inductances are not constant, but this change does not significantly influence the predictive method used in this paper as shown in [38]. Angular speed ω el and stator currents i Sd and i Sq are measurable values, while voltages v Sd and v Sq can be determined by the switching states of transistors and the DC-link voltage.…”

Section: Predictive Sopf Detection Methodsmentioning

confidence: 99%

Single Open-phase Fault Detection with Fault-Tolerant Control of an Inverter-fed Permanent Magnet Synchronous Machine

et al. 2014

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In this paper first a current predictive method for single open-phase fault detection in a three phase drive with a permanent magnet synchronous machine is presented. The proposed method is based on a predictive stator current calculation. For each sampling interval the difference between the actual stator current and its predicted value in a previous sampling interval is calculated. To identify the location of a single open-phase fault, an identification method is presented which is based on the analysis of the stator current vector angle. After the single open-phase fault is detected and identified it is desirable for the electrical machine to continue operating with a reduced number of phases. For this purpose, a modified direct torque control algorithm for the fault-tolerant control is implemented. In order to improve the performance of the drive, a pre-firing angle is additionally introduced. All proposed methods have been simulated in Matlab/Simulink and verified on an experimental model. Detekcija odspojene faze i na kvarove otporno upravljanje pretvaračem napajanim sinkronim motorom s permanentnim magnetima. Učlanku je prvo predstavljena metoda za detekciju kvara odspojene faze u trofaznom elektromotornom pogonu sa sinkronim motorom s permanentim magnetima zasnovana na predikciji struja statora. U svakom koraku uzorkovanja računa se razlika izmeu trenutne mjerene struje statora i prediktirane vrijednosti iz prethodnog koraka. U svrhu odreivanja lokacije odspojene faze, predstavljena je metoda identifikacije zasnovana na analizi kuta vektora struje statora. Nakon otkrivene i utvrene odspojene faze, poželjno je nastaviti rad električnog stroja sa smanjenim brojem faza. U ovu svrhu implementiran je izmijenjeni algoritam izravnog upravljanja momentom za postizanje na kvarove otpornog upravljanja. Da bi se unaprijedilo vladanje sustava elektromotornog pogona, dodatno je uveden kut prethoenja aktivacije impulsa. Sve predložene metode simulirane su u Matlab/Simulink okruženju i provjerene na eksperimentalnom postavu.Ključne riječi: Sinkroni motor s permanentnim magnetima, na kvarove otporan sustav, kvar jedne odspojene faze, na kvarove otporno upravljanje, kut prethoenja aktivacije impulsa

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Section: Predictive Sopf Detection Methodsmentioning

confidence: 99%

Single Open-phase Fault Detection with Fault-Tolerant Control of an Inverter-fed Permanent Magnet Synchronous Machine

et al. 2014

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“…Consider 1-TR/L in matrix F in (5) and (6). As the control period of current loop is typically around 100 s, motor resistance is about a few hundred milli-ohms and motor inductance is several milli-henries, 1-TR/L is much smaller than 1.…”

Section: Pwm Predictive Controlmentioning

confidence: 99%

Improved predictive current control with static current error elimination for permanent magnet synchronous machine

Wang

Yang

Niu

et al. 2014

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society

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This paper presents a novel algorithm to eliminate d-q axis static current error of PMSM predictive current control when the model in predictive controller has parameter mismatch with real system. The relationship between current error and parameter mismatch is analyzed numerically, and the static current error is eliminated by introducing current error integration in d-axis current control while dynamically adjusting the parameter of controller flux according to the q-axis current error. The algorithm is quite suitable for industrial application and is verified through simulation and experiment on a 3.3kW PMSM servo platform.

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“…metal rolling, mine hoisting, ship propulsion and locomotive traction, owing to their advantages such as a high efficiency, as well as a high and adjustable power factor [1]- [3]. The switching frequency of the power semiconductors is limited to below 1kHz to reduce the switching losses and to improve the output power of the converters [4]- [9].…”

Section: Introductionmentioning

confidence: 99%

Control of Electrically Excited Synchronous Motors with a Low Switching Frequency

Yuan¹,

Wu²,

Dai³

et al. 2012

Journal of Power Electronics

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The switching frequency of the power electronic devices used in large synchronous motor drives is usually kept low (less than 1 kHz) to reduce the switching losses and to improve the converter power capability. However, this results in a couple of problems, e.g. an increase in the harmonic components of the stator current, and an undesired cross-coupling between the magnetization current component (i m ) and the torque component (i t ). In this paper, a novel complex matrix model of electrically excited synchronous motors (EESM) was established with a new control scheme for coping with the low switching frequency issues. First, a hybrid observer was proposed to identify the instantaneous fundamental component of the stator current, which results in an obvious reduction of both the total harmonic distortion (THD) and the low order harmonics. Then, a novel complex current controller was designed to realize the decoupling between i m and i t . Simulation and experimental results verify the effectiveness of this novel control system for EESM drives.

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Direct Current Control of a Synchronous Machine in Field Coordinates

Cited by 34 publications

References 30 publications

Single Open-phase Fault Detection with Fault-Tolerant Control of an Inverter-fed Permanent Magnet Synchronous Machine

Single Open-phase Fault Detection with Fault-Tolerant Control of an Inverter-fed Permanent Magnet Synchronous Machine

Improved predictive current control with static current error elimination for permanent magnet synchronous machine

Control of Electrically Excited Synchronous Motors with a Low Switching Frequency

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