Pseudo derivative feedback current controlled sensorless PMSM drive with flux-torque based mras estimator for low speed operation

Karthikeyan, A.; Prabhakaran, K. K.; Perumal, B. Venkatesa; Nagamani, C.

doi:10.1109/sled.2017.8078440

Cited by 10 publications

(8 citation statements)

References 11 publications

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“…It performs well at standstill, low‐speed regions and robust with respect to machine parameter variations. Also, there is no design complexity involved as it eliminates computation of stator flux [1, 2, 4], back‐EMF and programmable low‐pass filters.…”

Section: Structure Of the Proposed Mras Speed Estimatormentioning

confidence: 99%

“…Sensorless rotor speed and position estimation schemes are broadly grouped as: fundamental excitation methods, saliency and signal injection methods. In fundamental excitation method, the model reference adaptive system (MRAS) based methods discussed in [3, 4] for rotor speed and position estimation have drawn attention due to their simplicity. MRAS speed estimators based on stator current, stator flux, back electromotive force (back‐EMF) and reactive power have been proposed for vector control of PMSM drive.…”

Section: Introductionmentioning

confidence: 99%

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Laboratory implementation of electromagnetic torque based MRAS speed estimator for sensorless SMPMSM drive

2019

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This Letter proposes a simple electromagnetic torque based model reference adaptive system (MRAS) speed estimator for sensorless surface mount permanent magnet synchronous motor (SMPMSM) drive. The proposed estimator is formed using instantaneous measured and estimated electromagnetic torque. The proposed estimator is implemented for 1.5 kW laboratory prototype SMPMSM drive using field programmable gate array ALTERA cyclone II. Experimental results demonstrate the efficacy of the proposed scheme under different test conditions viz. different low-speed regions and standstill at different load conditions with uncertainty in machine parameters. Results show that the estimator is stable in low-speed regions and exhibits robustness against uncertainties in machine parameters.

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Section: Structure Of the Proposed Mras Speed Estimatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laboratory implementation of electromagnetic torque based MRAS speed estimator for sensorless SMPMSM drive

2019

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“…In order to improve the disturbance rejection of the system, Xing et al combined the reduced-order load torque observer with the PDF controller used Phelan tuning method, but this design ignored some influence factors such as PWM update delay [23]. To achieve sensorless control of PMSM, Karthikeyan et al developed PDF controller by using MARS estimator [24], and Li et al designed PDF controller to improve the robustness of the system [25]. However, none of them gave a clear method to tune PDF parameters.…”

Section: Introductionmentioning

confidence: 99%

FPGA-Based High-Performance Double-Loop PDF Control Strategy for PMSM

Dong

Xiao

et al. 2021

IEEE Access

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Due to the large overshoot and poor disturbance rejection impact the control accuracy of the permanent magnet synchronous motor (PMSM) in the proportional-integral-derivative (PID) control mode. In this paper, we propose an optimal double-loop pseudo-derivative feedback (PDF) control strategy. Firstly, to obtain high-precision feedback current and minimize the influence of sampling delay, a double-feedback PDF control structure is configured based on the Σ-Δ sampling modulation and Sinc3 filter. Secondly, we adopt an instant-sampling and instant-update (ISIU) strategy based on a field-programmable gate array (FPGA), which can reduce the update delay of the pulse-width modulation (PWM), and design the hardware timing diagram, accordingly. Then, based on the influence of the closed-loop pole position on the dynamic performance of the system and the saturation characteristics of the power device, the PDF parameters tuning method of the current loop and speed loop is proposed. Finally, the system performance under different control strategies is compared and analyzed through simulations and experiments. The results show that the optimal double-loop PDF control strategy proposed in this paper can considerably expand the bandwidth of the current loop and has better disturbance rejection.INDEX TERMS Permanent magnet synchronous motor (PMSM), PDF control strategy, Σ-Δ sampling update strategy, double-feedback structure.

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“…Time error signals are generated directly from the different phase voltages. In [16] the abilities of pseudo derivative feedback controller to improve the performance of PMSMs at standstill and low speed regions are discussed. A predictive current control for torque ripple reduction of a PMSM with variable switching frequency is addressed in [17].…”

Section: Introductionmentioning

confidence: 99%

A Novel Harmonic Current Control Algorithm

Ebrahimi¹

2018

Preprint

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This paper presents a novel control algorithm forhigh-torque low-speed permanent magnet synchronous motorsfor direct drive applications. A new induced voltage basedformulation of the electromagnetic torque is developed and anovel current control algorithm is designed to reduce the torqueripples which are originated from the flux harmonics. Aprototype motor with relatively high induced voltage harmonicsis designed and constructed and the experiment results of theHarmonic control algorithm are compared to the results of aconventional Field Oriented Control.

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Pseudo derivative feedback current controlled sensorless PMSM drive with flux-torque based mras estimator for low speed operation

Cited by 10 publications

References 11 publications

Laboratory implementation of electromagnetic torque based MRAS speed estimator for sensorless SMPMSM drive

Laboratory implementation of electromagnetic torque based MRAS speed estimator for sensorless SMPMSM drive

FPGA-Based High-Performance Double-Loop PDF Control Strategy for PMSM

A Novel Harmonic Current Control Algorithm

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