Sensorless Control of PMSM for the Whole Speed Range Using Two-Degree-of-Freedom Current Control and HF Test Current Injection for Low-Speed Range

Seilmeier, Markus; Piepenbreier, Bernhard

doi:10.1109/tpel.2014.2353215

Cited by 102 publications

(42 citation statements)

References 27 publications

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“…Since the mechanical position sensors, such as resolvers and encoders, are vulnerable to strong vibration, high operating temperature and humid atmosphere, sensorless control of PMSM has been the research focus by extracting the position information from terminal voltages and currents, which can be separated into saliency-and model-based sensorless methods [4,5]. The saliency-based highfrequency signal injection methods, which exploits rotor position dependent inductance properties, are appropriate only for low and zero speeds due to the constraints of constant DC voltage and high-frequency noise [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Sensorless Control of Permanent Magnet Synchronous Motors with Compensation for Parameter Uncertainty

Yang¹,

Mao²,

Chen³

2017

Journal of Electrical Engineering and Technology

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-Estimation errors of the rotor speed and position in sensorless control systems of Permanent Magnet Synchronous Motors (PMSM) will lead to low efficiency and dynamic-performance degradation. In this paper, a parallel-type extended nonlinear observer incorporating the nominal parameters is constructed in the stator-fixed reference frame, with rotor position, speed, and the load torque simultaneously estimated. The stability of the extended nonlinear observer is analyzed using the indirect Lyapunov's method, and observer gains are selected according to the transfer functions of the speed and position estimators. Taking into account the parameter inaccuracies issue, explicit estimation error equations are derived based on the error dynamics of the closed-loop sensorless control system. An equivalent flux error is defined to represent the back Electromotive Force (EMF) error caused by the inaccurate motor parameters, and a compensation strategy is designed to suppress the estimation errors. The effectiveness of the proposed method has been validated through simulation and experimental results.

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Section: Introductionmentioning

confidence: 99%

Sensorless Control of Permanent Magnet Synchronous Motors with Compensation for Parameter Uncertainty

Yang¹,

Mao²,

Chen³

2017

Journal of Electrical Engineering and Technology

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“…The first one is represented by the fundamental excitation techniques [1][2][3][4][5][6], which estimate the rotor speed and position exploiting the back electromotive force generated by the permanent magnet. The second one corresponds to the saliency tracking techniques [7][8][9][10][11][12][13][14], which, injecting a persistent highfrequency signal, exploit the rotor anisotropy to reconstruct its position. The former methods do not require any additional signal injection, but, in case of techniques based on the estimation of the back electromotive force (EMF), they hardly operate at low speeds and surely not at standstill due to the lack of useful information.…”

Section: Introductionmentioning

confidence: 99%

Sensorless Finite-Control Set Model Predictive Control for IPMSM Drives

Rovere

Formentini

Gaeta³

et al. 2016

IEEE Trans. Ind. Electron.

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-This paper investigates the feasibility of a sensorless field oriented control (FOC) combined with a finite control set model predictive current control (FCS-MPC) for an interior permanent magnet synchronous motor (IPMSM). The use of a FCS-MPC makes the implementation of most of the existing sensorless techniques difficult due to the lack of a modulator. The proposed sensorless algorithm exploits the saliency of the motor and the intrinsic higher current ripple of the FCS-MPC to extract position and speed information using a model-based approach. This method does not require the injection of additional voltage vectors or the periodic interruption of the control algorithm and consequently it has no impact on the performance of the current control. The proposed algorithm has been tested in simulation and validated on an experimental setup, showing promising results.

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“…The precision of the estimated position is highly affected especially at low-speed operation by the accuracy in motor parameters and nonlinearity in inverter output voltage such as dead-time effect [5]. The magnitude of the back-EMF at low-speed range is small, in which the back-EMF based sensorless method is primarily useful at medium-speed or higher [6].…”

Section: Introductionmentioning

confidence: 99%

Sensorless Scheme for Interior Permanent Magnet Synchronous Motors with a Wide Speed Control Range

Hong¹,

Lee²,

Lee³

2016

Journal of Power Electronics

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Permanent magnet synchronous motors (PMSMs) have higher torque and superior output power per volume than other types of AC motors. They are commonly used for applications that require a large output power and a wide range of speed. For precise control of PMSMs, knowing the accurate position of the rotor is essential, and normally position sensors such as a resolver or an encoder are employed. On the other hand, the position sensors make the driving system expensive and unstable if the attached sensor malfunctions. Therefore, sensorless algorithms are widely researched nowadays, to reduce the cost and cope with sensor failure. This paper proposes a sensorless algorithm that can be applied to a wide range of speed. The proposed method features a robust operation at low-speed as well as high-speed ranges by employing a gain adjustment scheme and intermittent voltage pulse injection method. In the proposed scheme the position estimation gain is tuned by a closed loop manner to have stable operation in tough driving environment. The proposed algorithm is fully verified by various experiments done with a 1 kW outer rotor-type PMSM.

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Sensorless Control of PMSM for the Whole Speed Range Using Two-Degree-of-Freedom Current Control and HF Test Current Injection for Low-Speed Range

Cited by 102 publications

References 27 publications

Sensorless Control of Permanent Magnet Synchronous Motors with Compensation for Parameter Uncertainty

Sensorless Control of Permanent Magnet Synchronous Motors with Compensation for Parameter Uncertainty

Sensorless Finite-Control Set Model Predictive Control for IPMSM Drives

Sensorless Scheme for Interior Permanent Magnet Synchronous Motors with a Wide Speed Control Range

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