Sensorless Direct Flux Vector Control of Synchronous Reluctance Motors Including Standstill, MTPA, and Flux Weakening

Yousefi-Talouki, Arzhang; Pescetto, Paolo; Pellegrino, Gianmario

doi:10.1109/tia.2017.2679689

Cited by 94 publications

(52 citation statements)

References 28 publications

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“…It must be noted that for high currents this position estimation technique will present error due to cross-saturation effect [14], especially for high anisotropy motors. The expected error due to cross-saturation effect Δ can be estimated as:…”

Section: A Position Detection Techniquementioning

confidence: 99%

“…Due to the differential inductance variability, also Δ is a function of the working point in the dq current plane. The literature proposes several methods to overcome this position error [14], [15], but the correction requires the knowledge of the flux maps, that is not available at this stage of the self commissioning procedure.…”

Section: A Position Detection Techniquementioning

confidence: 99%

“…On the other hand, in the test performed with the On-Off excitation is immune from cross-coupling effects, but the shaft slightly moved from its equilibrium position during de-excitation for test currents higher than 8 A. Once obtained enough points in the dq current plane, the value of was extrapolated using (14) for each set of measured data. Moreover, a further value for was obtained putting together all the data measured in sensorless with continuous and with On-Off excitation.…”

Section: B Evaluation Ofmentioning

confidence: 99%

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Sensorless magnetic model and pm flux identification of synchronous drives at standstill

Pescetto

Pellegrino

2017

2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)

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Abstract-This paper proposes a sensorless self-commissioning technique for PM-assisted synchronous reluctance motors. The identification of the machine's flux maps is performed at standstill without any position transducer and with no need of rotor locking. The machine is first excited with alternated high voltage pulses, injected in the estimated d and q directions of the rotor to determine its saturation curves. Then, direct current values are applied in a fixed stator direction so that the rotor aligns in specific positions giving information on the PM flux linkage. Experimental results are provided on a PM-assisted synchronous reluctance motor prototype, confirming the validity of the proposed method. The key original feature of the proposed work is the estimation of magnet flux linkage at standstill. For the motor under test, the magnet flux linkage was sensorless estimated at standstill with an error lower than 3%.

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Section: A Position Detection Techniquementioning

confidence: 99%

Section: A Position Detection Techniquementioning

confidence: 99%

Section: B Evaluation Ofmentioning

confidence: 99%

See 1 more Smart Citation

Sensorless magnetic model and pm flux identification of synchronous drives at standstill

Pescetto

Pellegrino

2017

2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)

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“…This method is based on the salient pole effect of the motor, which is mainly used in zero and low speed domains. The second one is called back EMF based methods [10][11][12][13][14][15][16][17][18][19], which utilizes the estimated back EMF signals to obtain the position information of the motor. Because the magnitude of back EMF is in proportion to the speed of the motor, the performance of back EMF based methods at ultra-low and zero speed is extremely poor [11].…”

Section: Introductionmentioning

confidence: 99%

“…Because the magnitude of back EMF is in proportion to the speed of the motor, the performance of back EMF based methods at ultra-low and zero speed is extremely poor [11]. Hence, back EMF based methods and signal injection methods are usually combined to achieve sensorless control for a whole speed range [12][13][14]. Back EMF based methods primarily includes the model adaptive method (MRAS) [16], the Kalman filtering method (EKF) [17], and the sliding mode observer (SMO) [2,18,19], etc.…”

Section: Introductionmentioning

confidence: 99%

Sensorless Control for IPMSM Based on Adaptive Super-Twisting Sliding-Mode Observer and Improved Phase-Locked Loop

Chen

Zhang

et al. 2019

Energies

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In traditional sensorless control of the interior permanent magnet synchronous motors(IPMSMs) for medium and high speed domains, a control strategy based on a sliding-mode observer(SMO) and phase-locked loop (PLL) is widely applied. A new strategy for IPMSM sensorless controlbased on an adaptive super-twisting sliding-mode observer and improved phase-locked loop isproposed in this paper. A super-twisting sliding-mode observer (STO) can eliminate the chatteringproblem without low-pass filters (LPFs), which is an effective method to obtain the estimated backelectromotive forces (EMFs). However, the constant sliding-mode gains in STO may causeinstability in the high speed domain and chattering in the low speed domain. The speed-relatedadaptive gains are proposed to achieve the accurate estimation of the observer in wide speed rangeand the corresponding stability is proved. When the speed of IPMSM is reversed, the traditionalPLL will lose its accuracy, resulting in a position estimation error of 180°. The improved PLL basedon a simple strategy for signal reconstruction of back EMF is proposed to ensure that the motor canrealize the direction switching of speed stably. The proposed strategy is verified by experimentaltesting with a 60-kW IPMSM sensorless drive.

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A reference stator flux linkage calculation method for realizing maximum efficiency operation in direct‐torque‐controlled IPMSM drives

Shinohara,

Maemura,

Yamamoto

2024

Electrical Engineering Japan

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In this paper, a reference stator flux linkage calculation method is proposed for realizing maximum efficiency operation in direct‐torque‐controlled interior permanent magnet synchronous motor (IPMSM) drives. The proposed method is based on the solutions of a quartic equation, a motor model in the d‐q rotating frame widely used for synchronous motor controllers, and a well‐known equation for maximum efficiency operation. Therefore, the proposed method uses neither any approximation function nor any look‐up table that depends on the parameters of the motor, which has to be created in advance. Simulation results validate that the proposed methods can achieve maximum efficiency operation in IPMSM drives.

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Sensorless Direct Flux Vector Control of Synchronous Reluctance Motors Including Standstill, MTPA, and Flux Weakening

Cited by 94 publications

References 28 publications

Sensorless magnetic model and pm flux identification of synchronous drives at standstill

Sensorless magnetic model and pm flux identification of synchronous drives at standstill

Sensorless Control for IPMSM Based on Adaptive Super-Twisting Sliding-Mode Observer and Improved Phase-Locked Loop

A reference stator flux linkage calculation method for realizing maximum efficiency operation in direct‐torque‐controlled IPMSM drives

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