Selective Current Harmonic Suppression for High-Speed PMSM Based on High-Precision Harmonic Detection Method

Liu, Gang; Chen, Baodong; Wang, Kun; Song, Xinda

doi:10.1109/tii.2018.2873652

Cited by 98 publications

(32 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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).

show abstract

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

View full text Add to dashboard Cite

show abstract

“…The inverter nonlinearity with dead-time voltages is modeled and estimated in [6,7] for inverters with different numbers of legs. To eliminate current harmonics, study [8] uses low-pass filters (LPFs) to obtain harmonics from winding currents. By using these obtained harmonics, the disturbance injection can be implemented.…”

Section: Introductionmentioning

confidence: 99%

Eliminations of Low-frequency Current Harmonics for Five-phase Open-end Winding Non-sinusoidal Machine Drives applying Neural Networks

Nguyen

Semail

2020

IECON 2020 the 46th Annual Conference of the IEEE Industrial Electronics Society

View full text Add to dashboard Cite

This study aims at eliminating unwanted harmonics in current control of a five-phase non-sinusoidal permanent magnet synchronous machine (PMSM) in an openend winding configuration. The machine is supplied by two voltage source inverters (VSIs) using a single DC-bus voltage. High-frequency harmonics, caused by the zero-sequence current with the inverter switching frequency, have been significantly reduced by using a proper pulse width modulation (PWM) strategy. Meanwhile, low-frequency current harmonics are generated by unwanted harmonics of the back electromotive force (back-EMF) and by the inverter nonlinearity. In this study, the low-frequency current harmonics are nullified by simple adaptive linear neural networks (ADALINEs) in rotor reference frames combined with the back-EMF compensation. As a result, the quality of current control is improved. The effectiveness of the proposed strategies is verified by numerical results.

show abstract

“…Techniques such as power factor correction rectifiers are also used but do not consider total harmonic processing on the grid [5]. The detection and processing technology of grid harmonics must be studied [6]. Relevant harmonic suppression technology is proposed and improved continuously [7].…”

Section: Introductionmentioning

confidence: 99%

Grid-Friendly Active Demand Strategy on Air Conditioning Class Load

Zhu¹,

Gu²,

Wu³

2020

Applied Sciences

View full text Add to dashboard Cite

The growing number of accessed energy-efficient frequency conversion air conditioners is likely to generate a large number of harmonics on the power grid. The following shortage in the reactive power of peak load may trigger voltage collapse. Hence, this conflicts with people’s expectations for a cozy environment. Concerning the problems mentioned above, an active management scheme is put forward to balance the electricity use and the normal operation of air conditioning systems. To be specific, first, schemes to suppress the low voltage ride through (LVRT) and harmonic are designed. Second, to deaden the adverse effects caused by nonlinear group load running on the grid and prevent the unexpected accidents engendered from grid malfunction, the dynamic sensing information obtained by an online monitor is analyzed, which can be seen as an actively supervised mechanism. The combined application of active and passive filtering technology is studied as well. Third, the new energy storage is accessed reliably to cope with peak-cutting or grid breaking emergencies, and the fuzzy control algorithm is researched. Finally, system feasibility is verified by functional modules co-operation simulation, and active management target is achieved under scientific and reasonable state-of-charge (SOC) management strategy.

show abstract

Selective Current Harmonic Suppression for High-Speed PMSM Based on High-Precision Harmonic Detection Method

Cited by 98 publications

References 32 publications

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

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

Eliminations of Low-frequency Current Harmonics for Five-phase Open-end Winding Non-sinusoidal Machine Drives applying Neural Networks

Grid-Friendly Active Demand Strategy on Air Conditioning Class Load

Contact Info

Product

Resources

About