A current harmonics suppression method for permanent magnet synchronous motor drives

Xinhai, Jin; Li, Baisong; Xu, Dianguo

doi:10.1109/itec-ap.2017.8080934

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…Comparing (21) to (22), it is apparent that the desired resonant frequency will deviate from the actual resonant frequency. Online calculation of trigonometric function consumes a lot of resources.…”

Section: Resonant Controller In Harmonic Subspacementioning

confidence: 99%

“…However, it is only limited to the condition that the d ‐axis current must be a constant value. In [21, 22], disturbance observers are adopted to estimate the compensation voltage, which is independent of the phase current polarities and parameters of inverter. However, it relies on the machine parameters and it is not easy to get the observer gains.…”

Section: Introductionmentioning

confidence: 99%

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Current harmonic elimination method for asymmetric dual three‐phase permanent magnet synchronous motor

Zhu

et al. 2020

IET Electric Power Applications

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Four‐dimension current control for asymmetric dual three‐phase permanent magnet synchronous motor based on vector space decomposition approach can eliminate the harmonic currents induced by the nonlinear characteristics of inverter. This study proposes a control strategy which uses a combination of the dead‐time compensation scheme and current harmonic elimination algorithm together to eliminate the harmonic currents. The dead‐time compensation is calculated based on the analysis of the non‐linear characteristics of the inverter. Besides, a resonant controller which takes into account the pole correction caused by the discretisation process is employed in harmonic subspace as the feedback current control loop to generate the compensation voltage. In addition the phase lag caused by the pulse width modulation update and inductive load is also considered to ensure the stability of resonant controller. The experimental results demonstrate the superior performance of the proposed scheme.

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Section: Resonant Controller In Harmonic Subspacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Current harmonic elimination method for asymmetric dual three‐phase permanent magnet synchronous motor

Zhu

et al. 2020

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…Therefore, essential compensation measurements must be carried out to improve the sensorless control performance. Proper harmonic compensation often requires accurate real-time harmonic extraction or harmonic filtering, which can be generally categorized into two kinds: time-domain methods and frequency-domain methods [14], [15]. Usually, harmonic extraction can be carried out in the frequency domain, in which the discrete Fourier transform and its extension strategies are preferred [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Low Speed Sensorless Control Based on an Improved Sliding Mode Observation and the Inverter Nonlinearity Compensation for SPMSM

Yuan

Yang

et al. 2020

IEEE Access

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It is a difficult to accurately estimate the rotor position in a surface permanent magnet synchronous motor (SPMSM), especially for low speed conditions because the back electromotive force (EMF) is almost zero. In this paper, an improved sliding mode observer (SMO) with a continuous sliding mode switching function (which could reduce the chattering effect) is proposed to estimate the real-time rotor position at a low speed. Through the introduction of an intermediate variable H , the back EMF is extended at low speed, which could improve the estimation accuracy for the rotor position. In addition, the chattering phenomenon is reduced by redesigning the sliding switching function. On the other hand, inverter nonlinearity also results in torque ripple and deteriorates the drive performance because of the harmonic components in the three-phase stator current. Here, a generalized sliding discrete Fourier transform (GSDFT) strategy is studied to extract the harmonic components, which can then be compensated with the corresponding compensation voltage calculated from the motor mathematical model. With the proposed strategy, the estimation accuracy can be apparently restricted when the rotor speed is lower than 50 rpm, while the chattering effect is also improved. With the nonlinearity compensation, the total harmonic distortion obviously decreases, which can improve the rotor estimation and the torque performance. In addition, the GSDFT algorithm executes in approximately half the time of the SDFT compensation method. INDEX TERMS Surface permanent magnet synchronous motor (SPMSM), low speed, sliding mode observer (SMO), inverter nonlinearity compensation, generalized sliding discrete fourier transform (GSDFT).

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A current harmonics suppression method for permanent magnet synchronous motor drives

Cited by 2 publications

References 7 publications

Current harmonic elimination method for asymmetric dual three‐phase permanent magnet synchronous motor

Current harmonic elimination method for asymmetric dual three‐phase permanent magnet synchronous motor

Low Speed Sensorless Control Based on an Improved Sliding Mode Observation and the Inverter Nonlinearity Compensation for SPMSM

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