Position Sensorless Control Method at Zero-Speed Region for Permanent Magnet Synchronous Motors Using the Neutral Point Voltage of Stator Windings

Iwaji, Yoshitaka; Takahata, Ryoichi; Suzuki, Takahiro; Aoyagi, Shigehisa

doi:10.1109/tia.2016.2582118

Cited by 19 publications

(7 citation statements)

References 11 publications

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“…Many efforts have been made to diminish the undesirable audible noise caused by HF signal injection [2,17,18,[20][21][22]. In [21], a pulsating square-wave injection method based on zerosequence voltage measurement was proposed.…”

Section: Introductionmentioning

confidence: 99%

Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Alaei

Nejad

Gieras

et al. 2019

IET Power Electronics

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In saliency-based sensorless methods, the amplitude of the injected voltage cannot be reduced to levels below its specified value because of the reasonable signal required for the noise ratio. Increasing the injection signal amplitude increases not only the acoustic noise and high-frequency (HF) losses, but also the total harmonic distortion (THD) of the output voltage and current ripples. A new pulsating semi-impulse signal injection method based on the current sensing technique is proposed for the sensorless control of interior permanent magnet synchronous motors (IPMSMs). The proposed method aims to control the motor speed and reduce some problems due to the HF signal injection involving acoustic noise, HF losses and THD of the output voltage. Taking into account the premium injection angle, these problems are reduced significantly as compared to those in conventional square-wave methods. Hence, the proposed method increases the sensorless driver efficiency and its application scope. The effectiveness of the proposed method is then confirmed with computer simulation and experimental tests. Experimental comparisons at the same injection frequency and injection effective voltage show that the performance of the proposed method is beneficial. All experiments were performed on a IPMSM with V-shaped PMs which is used in a refrigerator compressor.

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Section: Introductionmentioning

confidence: 99%

Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Alaei

Nejad

Gieras

et al. 2019

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…This first version of the technique was designed for brushless DC machines (BLDC), that are typically driven by means of block commutation (while Brushless AC Machines, BLAC, rely on sinusoidal commutation). Thus, a modified version of this technique for BLAC was later on proposed in [34]. The authors show that this technique can operate also with magnetically saturated machines and, although it resembles closely the DFC technique, the utilised PWM patterns differ significantly.…”

Section: Introductionmentioning

confidence: 99%

Influence and compensation of the stator flux on the direct flux control sensorless technique for PMSMs

Grasso

Palmieri

Mandriota

et al. 2021

J. eng.

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Several techniques exploiting machines anisotropies have been proposed in literature for sensorless control of synchronous machines. Among them, the direct flux control (DFC) technique allows estimating the electrical rotor position by exploiting the zero-sequence voltage of the machine. This work aims at analysing the effects of magnetic saturation on the application of the DFC technique to permanent magnet synchronous machines. This effect is present when stator flux is controlled during machine operation, leading to an error in the estimation of the electrical rotor position. Starting from an analytical model of the machine phase inductances, a complete mathematical description of the DFC technique is derived and presented. The proposed mathematical model shows how the estimated electrical rotor position is biased when operating under load conditions. Moreover, the result of the analysis of the DFC technique allows to refine the obtained estimate and to reduce the electrical rotor estimation error. Experimental results on a test motor are provided in order to verify and support the proposed mathematical model and technique.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Another interesting usage of the zero-sequence voltage for sensorless operation of PMSMs is reported, firstly, in [24], where the machine is operated by exciting two machine phases and by measuring the induced voltage caused by magnetic saturation (IVMS) allowing for the estimation of the rotor position. This technique presented the limitation of allowing only block-commutation so, in order to overcome this limitation, this technique was further developed and proposed in [25]. This technique is capable of operating with magnetically saturated machines and resembles the DFC technique, however the PWM pulse shifting pattern differs.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Application of the Direct Flux Control Sensorless Technique to Low-Power PMSMs

et al. 2020

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In the field of sensorless control of permanent magnet synchronous motors (PMSMs), different techniques based on machine anisotropies have been studied and implemented successfully. Nevertheless, most proposed approaches extract the rotor position information from the measured machine currents, that, when applied to low-power machines, might require high-bandwidth current sensors. An interesting alternative is given by sensorless techniques that exploit the star-point voltage of PMSMs, such as the direct flux control technique. This work aims at analyzing the conditions of applicability of such technique by considering a more thorough description of the machine inductance matrix. After a comprehensive mathematical description of the technique and characterization of the machine anisotropy information that is extracted from the star-point voltage, simulation as well as experimental results conducted on a test machine are presented and discussed in order to validate the proposed theory.

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Position Sensorless Control Method at Zero-Speed Region for Permanent Magnet Synchronous Motors Using the Neutral Point Voltage of Stator Windings

Cited by 19 publications

References 11 publications

Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Influence and compensation of the stator flux on the direct flux control sensorless technique for PMSMs

Analysis and Application of the Direct Flux Control Sensorless Technique to Low-Power PMSMs

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