Proposal of a Fault-Tolerance Technique for 1-ph Open Circuit Fault in Resolvers

Bahari, M.; Tootoonchian, F.

doi:10.1109/jsen.2021.3076173

Cited by 20 publications

(9 citation statements)

References 15 publications

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“…Though position sensors are a crucial element in reliable operation of a PMSM system, position sensor failure modes are an under addressed topic [14]. Resolver single phase fault tolerant approach is proposed [15], where the faulted signal is reconstructed based on healthy signals. Authors of [16] proposes position and speed estimation approach that combines high frequency injection with discrete hall sensor inputs.…”

Section: Figure 1 Position Sensor Offset Error From a Motor Cross-sec...mentioning

confidence: 99%

Modeling and Detection of Dynamic Position Sensor Offset Error in PMSM Drives

Kuruppu¹,

Abeyratne²,

Hettiarachchi³

2023

Preprint

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<p> Rotor position information obtained through a position sensor is crucial for proper field-oriented control (FOC) of permanent magnet synchronous machine based high dynamic energy conversion applications. In applications such as transportation and industrial, PMSM energy conversion systems are subjected to harsh environmental conditions such as vibration, shock, and thermal shock causing mechanical interfaces holding positions sensors to fail, introducing error to the position measurement. A dynamic position sensor offset error (DPSOE), being such a failure mode has the potential to degrade system torque output or more adversely, reverse machine torque output that may cause catastrophic outcomes. This paper evaluates different DPSOE scenarios, presents an approach to model the failure mode for analysis and proposes two novel and robust DPSOE detection methods for PMSM drive systems. The proposed detection methods are analytically proven and supported by simulation and experimental results under multiple operating conditions proving robustness. </p>

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Section: Figure 1 Position Sensor Offset Error From a Motor Cross-sec...mentioning

confidence: 99%

Modeling and Detection of Dynamic Position Sensor Offset Error in PMSM Drives

Kuruppu¹,

Abeyratne²,

Hettiarachchi³

2023

Preprint

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“…1-Since the number of turns in winding A in √ 3 times greater than the number of turns in winding B (see Table I), smaller APE and MPE can be obtained by smaller defined k w in the Eq. (21).…”

Section: E Some Important Notes For Accuracy Improvementmentioning

confidence: 99%

“…By noticing the performed researches, there are four conventional methods for the resolvers analysis. Magnetic Equivalent Circuit (MEC) [5], [6], [16], [19], [20], Winding Function Approach (WFA) [21], [22], subdomain method [13], [15], and Finite Element Method (FEM) [18] are used by researchers for designing, optimizing, or analyzing the resolver models. Although FEM is a powerful method, the iterative simulations make the process less suitable compared to a flexible MEC method.…”

Section: Introductionmentioning

confidence: 99%

A Novel Linear Resolver Proposal and Its Performance Analysis Under Healthy and Asymmetry Air-Gap Fault

Naderi

Ramezannezhad

Vandevelde

2022

IEEE Trans. Instrum. Meas.

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A novel linear resolver is proposed in this paper. The excitation and signals windings are placed on the mover, and the stator structure is designed by a certain number of teeth/slots per the mover length. Therefore, the proposed structure is more simple compared to other resolver types and causes a low price structure. A flexible Magnetic Equivalent Circuit (MEC) is used for analysis thanks to its capability, introducing various structures. The resolver performance under healthy and faulty cases is evaluated, where the position error under asymmetry air-gap fault is obtained. Performed analysis shows that the proposed resolver has less than 100 µm position error. Hence it can be a proper alternative as an accurate position sensor. The simple structure and high-accurate position estimation are the advantages of the proposed resolver compared to other types. Finally, the effectiveness of the proposed resolver is validated by experimental results.

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“…Therefore, for the control of 2-DOF electrical machines in different applications, such as industrial and medical field robots [3], drilling [4], industrial production [5], ship propulsion [6], artillery turrets, and aerospace vehicles, 2-DOF position sensors are recommended. Considering the intrinsic future of resolvers, such as good accuracy in polluted environments [7,8] and robust performance in applications with wide temperature variation and vibration [9], resolvers are good candidate for 2-DOF position sensors.…”

Section: Introductionmentioning

confidence: 99%

“…Considering the linear displacement, the tubular resolver is proposed with a long stator and a short mover configuration. The distribution of the signal windings (so-called sine and cosine windings) on the ith tooth is [8]:…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of helical motion resolver based on accurate modelling of longitudinal end effect

Zare

Nasiri‐Gheidari

2022

IET Electric Power Appl

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Using multiple position sensors in the control system of Two-Degrees of Freedom (2-DOF) motors causes it more complicated than that of conventional 1-DOF ones. However, employing a 2-DOF position sensor in comparison with two independent sensors, reduces the complexity, mass and volume of the system. The common 2-DOF sensors are able to determine the position in linear, rotational, and helical motion. Yet, they suffer from accuracy reduction due to the longitudinal end effect. Therefore, analytical modelling and the relevant compensation methods are discussed. The accuracy of the model is approved by comparing its results with those of 3D time transient finite element method. Afterwards, the model is used for compensating the end effects. Finally, the optimised 2-DOF resolver is prototyped and tested. The result of experimental test shows the proposed resolver's success.

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Proposal of a Fault-Tolerance Technique for 1-ph Open Circuit Fault in Resolvers

Cited by 20 publications

References 15 publications

Modeling and Detection of Dynamic Position Sensor Offset Error in PMSM Drives

Modeling and Detection of Dynamic Position Sensor Offset Error in PMSM Drives

A Novel Linear Resolver Proposal and Its Performance Analysis Under Healthy and Asymmetry Air-Gap Fault

Improving the performance of helical motion resolver based on accurate modelling of longitudinal end effect

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