Sensorless field-orientation control of an induction machine by high-frequency signal injection

Park, Yong Ha; Sul, Seung-Ki

doi:10.1109/28.740844

Cited by 250 publications

(7 citation statements)

References 18 publications

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“…At the same time, direct axis excitation inductance is equal to quadrature axis excitation inductance, so that linkage flux linkage is equal to the space vector of excitation flux linkage. Under rotating coordinate system, the electromagnetic torque is given [11][12]:…”

Section: Spmsm Control Mathematic Modelmentioning

confidence: 99%

Initial Rotor Position Detection of SPMSM with High-frequency Signal Injection

Liu¹,

Gu²,

Cai³

et al. 2023

J. Phys.: Conf. Ser.

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The accuracy of initial rotor position detection is important for senseless control, meanwhile, high frequency signal injection takes its advantages for its simple principle, small calculation amount and good real-time performance. In this paper, the principle of high frequency signal injection is analysed and systematically studied from position information error reading and the direction of d-axis. Besides, factors which may lead to the error of position information error reading is also studied, the second-order notch filter is added to get higher accuracy. Finally, the model of high frequency signal injection is set up to verify the effectiveness of the method, the result shows that method can run well at 0 speed and effectively estimate the actual rotor position.

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Section: Spmsm Control Mathematic Modelmentioning

confidence: 99%

Initial Rotor Position Detection of SPMSM with High-frequency Signal Injection

Liu¹,

Gu²,

Cai³

et al. 2023

J. Phys.: Conf. Ser.

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“…Numerous position estimators for the standstill and extremely‐low speed operations are based on the high‐frequency voltage injection [7, 13–15] to excite the magnetic saliency due to the rotor structure of IPMSM, which means that the inductance in the d ‐axis is smaller than that in the q ‐axis. Therefore, the current trajectory for high‐frequency voltage is ellipsoidal [2], as shown in Figs. 1 a and b , in which the

γ_{m}

–

δ_{m}

axes are placed at

45^{\circ}

from the

γ

–

δ

axes.…”

Section: Fast Position Estimator For Ipmsms Utilising Comb Filtersmentioning

confidence: 99%

“…Heterodyne‐based demodulation method is to detect the high‐frequency current components from the measured current. The authors in [2, 3] have proposed the rotor position by the following estimation method: first, the high‐frequency squarewave voltage is injected to the

γ

‐axis (the estimated d ‐axis) shown in Figs. 1 a and b , and then the stator currents are detected in

γ

–

δ

axes.…”

Section: Fast Position Estimator For Ipmsms Utilising Comb Filtersmentioning

confidence: 99%

“…Position‐sensorless positioning control of IMPMSs has been energetically researched for high reliability and cost reduction. For the position‐sensorless control for IPMSMs, the back electromotive force (EMF) is used [1] or high‐frequency signal is injected [2, 3]. The former methods fail at a low speed in standstill operations since the back‐EMF is too small for stabilisation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Position‐sensorless adaptive positioning control system for IPMSMs

Kawamura

Hasegawa

Liu

et al. 2018

IET Electric Power Applications

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Position-sensorless positioning control system of interior permanent magnet synchronous motors (IPMSMs) has been energetically researched for high reliability and cost reduction. To achieve fast response of positioning servo systems, accurate parameters of IPMSMs are required. The parameters vary due to temperature and/or ageing, which results in degradation of the positioning control performance. Thus, this study proposes a position-sensorless adaptive positioning control system for IPMSMs using the dynamic certainty equivalence principle for stable parameter identification. In addition, comb filters are used for fast estimation instead of low-pass filters. Experiments are demonstrated to validate the effectiveness and the feasibility of the proposed method. (a) High-frequency current (Δθ re ≠ 0), (b) High-frequency current (Δθ re = 0), (c) Construction of position estimator based on PLL, (d) Algorithm for amplitude computation

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“…However, BEMF tends to have low values at low speeds, which leads to poor performance at low-speed region. In the case of salient-pole electric machines, there is a technique that estimates the rotor angle by tracking the saliency of rotor through high-frequency injection [17][18][19]. This method can estimate the angle in all regions, including low-speed region.…”

Section: Introductionmentioning

confidence: 99%

Sensor-Less Drive of Ultra-Low Inductance SPMSM With DC-Link Single Current Sensor

Hwang,

Chae,

Choi

2024

IEEE Access

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This article presents a single current sensing method that achieves minimal current reconstruction errors, even at extremely low-speed region. In vector control applications, a drive system that combines single current sensor with position sensorless techniques is attractive as it minimizes the use of sensors. The current reconstruction method using the DC current measurement method introduces current reconstruction errors because of the sampling timing of single current sensor method. Moreover, current dc current measurement method has a dead zone where current reconstruction is not possible, leading to pronounced current ripple during the avoidance process. In the case of ultra-low inductance motors, the increase in current ripple exacerbates the drive performance, especially at low speeds. When the single current sensor method and sensorless drive are applied to an ultra-low inductance non-salient pole synchronous motor, it can lead to operational failures due to high current ripple and current reconstruction errors at low-speed region. This article proposes a technique to improve the performance in the low-speed region when current reconstruction method using dc current sensor and sensorless techniques are used together by eliminating dead zone in the low-speed region minimizing current reconstruction errors with a model-free method. The current reconstruction performance, sensorless startup, and operation performance have verified through experiments.

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Sensorless field-orientation control of an induction machine by high-frequency signal injection

Cited by 250 publications

References 18 publications

Initial Rotor Position Detection of SPMSM with High-frequency Signal Injection

Initial Rotor Position Detection of SPMSM with High-frequency Signal Injection

Position‐sensorless adaptive positioning control system for IPMSMs

Sensor-Less Drive of Ultra-Low Inductance SPMSM With DC-Link Single Current Sensor

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