Robust Magnet Polarity Estimation for Initialization of PM Synchronous Machines With Near-Zero Saliency

Raca, D.; Harke, M.C.; Lorenz, Robert D.

doi:10.1109/tia.2008.926195

Cited by 80 publications

(42 citation statements)

References 12 publications

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“…Compared with (2a), the additional term with sin 2 α in (3a), resulting from the interaction between the injected carrier voltage and the saturation saliency, is referred to as the secondary carrier current component. It can be used to identify the magnetic polarity information [12]- [16]. From (3a), the signals corresponding to magnetic polarity detection can be calculated as follows, …”

Section: B Secondary Harmonics Based Methodsmentioning

confidence: 99%

“…However, under the condition of low speed and standstill, the fundamental model of machine usually results in the failure of sensorless control. To solve this problem, saliency-tracking based methods are developed [5] [8]- [16]. Based on the machine saliency property, which results from either geometrical rotor saliency or magnetic saturation saliency, the rotor position information can be estimated effectively even at standstill condition.…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic polarity information can be obtained based on transient short pulses injection [8]- [11] or secondary harmonics due to magnetic saturation effect [12]- [16]. Although short pulses injection method has robust and reliable identification performance due to good signal to noise ratio (SNR), the magnetic polarity identification should be performed as an independent process, which is difficult to be integrated with sensorless algorithm, thus giving rise to computational complexity [11].…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic saturation effect can be clearly observed on the d-axis flux linkage when positive d-axis current is applied to the machine. In practical implementation, the magnetic polarity information can be obtained based on transient short pulses injection [8]- [11] or secondary harmonics of carrier current response [12]- [16].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Robust initial rotor position estimation of permanent magnet brushless AC machines with carrier signal injection-based sensorless control

Zhu

2012

2012 IEEE Energy Conversion Congress and Exposition (ECCE)

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In sensorless control of permanent magnet brushless AC machines, it is necessary to identify the initial rotor position prior to start-up the machine. Although saliency tracking based sensorless techniques are proven to be a good candidate to estimate the initial rotor position in sensorless control, magnetic polarity identification is another important issue. Since the machine saliency undergoes two cycles in single electrical period, the estimated position information based on machine saliency has an angle ambiguity of π. With the aid of magnetic saturation effect, this paper proposes a robust initial rotor position estimation scheme, which utilizes both d-and q-axis carrier current, instead of only q-axis carrier current in conventional pulsating carrier signal injection based sensorless control algorithm. Finally, the experimental results confirm the effectiveness and robustness of the proposed method.Index Terms --Carrier signal injection, initial rotor position, permanent magnet machine, sensorless.

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Section: B Secondary Harmonics Based Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Robust initial rotor position estimation of permanent magnet brushless AC machines with carrier signal injection-based sensorless control

Zhu

2012

2012 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…These saliencies can be classified into primary and secondary saliencies. The saliency with the maximum magnitude is used for position estimation, and is referred to as the primary saliency [5]. The other saliencies are grouped into secondary saliencies.…”

Section: Introductionmentioning

confidence: 99%

Decoupling of the Secondary Saliencies in Sensorless PMSM Drives using Repetitive Control in the Angle Domain

Wu¹,

Chen²,

Qi³

et al. 2016

Journal of Power Electronics

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To decouple the secondary saliencies in sensorless permanent magnet synchronous machine (PMSM) drives, a repetitive control (RC) in the angle domain is proposed. In this paper, the inductance model of a concentrated windings surface-mounted PMSM (cwSPMSM) with strong secondary saliencies is developed. Due to the secondary saliencies, the estimated position contains harmonic disturbances that are periodic relative to the angular position. Through a transformation from the time domain to the angle domain, these varying frequency disturbances can be treated as constant periodic disturbances. The proposed angle-domain RC is plugged into an existing phase-locked loop (PLL) and utilizes the error of the PLL to generate signals to suppress these periodic disturbances. A stability analysis and parameter design guidelines of the RC are addressed in detail. Finally, the proposed method is carried out on a cwSPMSM drive test-bench. The effectiveness and accuracy are verified by experimental results.

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Saliency Tracking‐Based Sensorless Control Methods—Issues and Solutions

2023

Sensorless Control of Permanent Magnet Synchronous Machine Drives

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Robust Magnet Polarity Estimation for Initialization of PM Synchronous Machines With Near-Zero Saliency

Cited by 80 publications

References 12 publications

Robust initial rotor position estimation of permanent magnet brushless AC machines with carrier signal injection-based sensorless control

Robust initial rotor position estimation of permanent magnet brushless AC machines with carrier signal injection-based sensorless control

Decoupling of the Secondary Saliencies in Sensorless PMSM Drives using Repetitive Control in the Angle Domain

Saliency Tracking‐Based Sensorless Control Methods—Issues and Solutions

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