Compensation for Asymmetries and Misalignment in a Hall-Effect Position Observer Used in PMSM Torque-Ripple Control

Beccue, P.; Pekarek, Steve; Deken, B.; Koenig, Andreas

doi:10.1109/tia.2006.889883

Cited by 54 publications

(16 citation statements)

References 27 publications

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“…Hence, for reasonable control performance with a cost-effective way, Hall sensors with binary-type, which generate square waveform signals that correspond to N and S poles in the rotor, are mainly employed [2]. Various studies to obtain precise position information from the low-resolution square wave signals of Hall sensors have been carried [3][4][5][6][7]. [3][4][5] proposed a position calculation method based on the zero-order Taylor algorithm, and the configuration is simple and easy to implement.…”

Section: Introductionmentioning

confidence: 99%

“…Various studies to obtain precise position information from the low-resolution square wave signals of Hall sensors have been carried [3][4][5][6][7]. [3][4][5] proposed a position calculation method based on the zero-order Taylor algorithm, and the configuration is simple and easy to implement. However, as the position value is obtained by integrating the average speed and the calculation of average speed is sensitive to inaccuracies in mechanical installation and non-uniformity in electrical parts, the resultant accuracy is insufficient when there exists an error in the average speed.…”

Section: Introductionmentioning

confidence: 99%

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Position Estimator Employing Kalman Filter for PM Motors Driven with Binary-type Hall Sensors

Lee¹

2016

Journal of Electrical Engineering and Technology

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-Application of vector control scheme for consumer products is enlarging to improve control performance. For the field-oriented control, accurate position detection is essential and generally requires expensive sensors. On the other hand, cost-reduction is important in home appliances, so that binary-type Hall-effect sensors are commonly used rather than using an expensive sensor such as an encoder. The control performance is directly influenced by the accuracy of the position information, and there exist non-uniformities related to Hall sensors in electrical and mechanical aspects, which result in distorted position information. Therefore, to get high-precision position information from low-resolution Hall sensors, this paper proposes a new position estimator consisting of a Kalman filter and feedforward compensation scheme, which generates a linearly changing position signal. The efficacy of the proposed scheme is verified by simulation and experimental results carried out with a 48-pole permanent magnet motor.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Position Estimator Employing Kalman Filter for PM Motors Driven with Binary-type Hall Sensors

Lee¹

2016

Journal of Electrical Engineering and Technology

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“…PMSM(Permanent Magnet Synchronous Motor)은 고 효율 특성과 높은 토크 및 우수한 제어성으로 인하여 산업용, 가정용 및 로봇 응용 분야에 널리 적용되고 있 다 [1][2][3][4][5][6][7][8] . 특히, 최근에는 로봇 및 전기 자동차의 구동 장 치로 그 활용도가 점점 확대되고 있다 [1][2][3][4][5][6][7][8][9][10] .…”

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“…특히, 최근에는 로봇 및 전기 자동차의 구동 장 치로 그 활용도가 점점 확대되고 있다 [1][2][3][4][5][6][7][8][9][10] . PMSM은 전 동기의 설계 특성상 영구자석이 고정자의 슬롯을 지나 는 부분에서 코깅(cogging) 현상에 의한 토크 리플이 존 재하게 되며, 이러한 코깅 토크는 속도 리플을 발생하게 된다.…”

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“…또한, 인가되는 기계적 부하에 의해서도 주기적인 속도리플을 발생하게 된다. 외란 부하에 따른 비규칙적 인 토크 리플을 억제하기 위한 토크 관측기나 토크 보 상기는 부하에 대한 응답성을 높이고, 빠르게 속도오차 를 수렴하게 하는 제어 방식으로 널리 적용되고 있다 [5][6][7][8][9][10][11][12] . 하지만, 코깅 토크에 의한 토크 리플은 전기적 주 파수가 빠르고, 관측기에 의해 추정토크를 연산하는 경 우 연산의 지연과 주기적인 리플로 인하여 그 오차를 보상하기가 매우 어렵다.…”

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Design of the Modified PID Speed Controller to Reduce the Speed Ripple

Kim¹,

Choo²,

Lee

2012

The Transactions of the Korean Institute of Power Electronics

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-PMSM(Permanent Magnet Synchronous Motor) has periodic torque ripple from the cogging torque and load conditions. This paper proposes the modified PID speed controller to reduce the speed ripple of the PMSM. The proposed modified PID controller uses a selective D(Differential) control term according to the speed error and the differential of the speed error. The proposed speed controller produces an additional torque reference such as torque compensator based on PI controller according to the speed error and the differential of the speed error, and it can reduce the vibration of the conventional D-control term with reduced speed ripple. Since the additional torque reference of the proposed speed controller is changed by the sign of the speed error and the differential of the speed error, a simple function to determine the sign of the error is used to produce the compensated torque. The proposed control scheme is verified by the computer simulation and the experiments.

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An economical and simple strategy for overcoming the Hall sensor faults in three phase brushless DC motor drive

Verma,

Mitra,

Bhat

et al. 2024

Circuit Theory & Apps

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SummaryBrushless DC motors (BLDCs) are highly efficient and have the least maintenance requirement due to which they have replaced many conventional AC motors in various applications like electric vehicles, fans, water pumps, and home appliances. However, like all conventional motors, performance degradation of the BLDC motors can occur due to faults like Hall sensors failure, commutation switch failure, and stator‐winding failure. Among all these failures, this paper focuses on Hall sensor failures and the execution of fault tolerant control. Hall sensors produce an output after every 60° of rotation of the rotor, generating six sequences in one electrical cycle. In this study, each sequence is defined as a sector, which corresponds to the rotor position. Based only on this sector information in each electrical cycle, this paper proposes an uncomplicated detection strategy for Hall sensor fault, which is independent of motor loading and high‐performance processing unit. Along with the diagnosis, an improved faulty signal reconstruction is implemented, which bypasses the fault and continues a smooth performance of the motor. The proposed detection and reconstruction strategies have been simulated in MATLAB Simulink 2020, and the experimental analysis has been conducted to validate the proposed strategies.

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Compensation for Asymmetries and Misalignment in a Hall-Effect Position Observer Used in PMSM Torque-Ripple Control

Cited by 54 publications

References 27 publications

Position Estimator Employing Kalman Filter for PM Motors Driven with Binary-type Hall Sensors

Position Estimator Employing Kalman Filter for PM Motors Driven with Binary-type Hall Sensors

Design of the Modified PID Speed Controller to Reduce the Speed Ripple

An economical and simple strategy for overcoming the Hall sensor faults in three phase brushless DC motor drive

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