Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter

Lim, Jeong-Woo; Bu, Hanyoung; Cho, Younghoon

doi:10.3390/electronics8010092

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…Dead time creates a nonlinear converter feature that distorts the stator voltage. In other words, it produces a set of low-order harmonics in the stator voltage of the drive inverter, leading to additional losses, particularly at high switching frequencies [ 24 ]. To address this distortion and make the model more feasible, the effect of the dead time and voltage drop of inverter switching devices must be taken into account through practical modeling of the inverter.…”

Section: Introductionmentioning

confidence: 99%

“…To address this distortion and make the model more feasible, the effect of the dead time and voltage drop of inverter switching devices must be taken into account through practical modeling of the inverter. While much research has been conducted on sensorless IM drives based on the EKF using an inaccurate ideal model of the inverter [ 24 , 25 , 26 ], there is relatively little literature on practical state estimation.…”

Section: Introductionmentioning

confidence: 99%

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Digital Twin Model of Electric Drives Empowered by EKF

Ebadpour

Jamshidi

Talla

et al. 2023

Sensors

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Digital twins, a product of new-generation information technology development, allows the physical world to be transformed into a virtual digital space and provide technical support for creating a Metaverse. A key factor in the success of Industry 4.0, the fourth industrial revolution, is the integration of cyber–physical systems into machinery to enable connectivity. The digital twin is a promising solution for addressing the challenges of digitally implementing models and smart manufacturing, as it has been successfully applied for many different infrastructures. Using a digital twin for future electric drive applications can help analyze the interaction and effects between the fast-switching inverter and the electric machine, as well as the system’s overall behavior. In this respect, this paper proposes using an Extended Kalman Filter (EKF) digital twin model to accurately estimate the states of a speed sensorless rotor field-oriented controlled induction motor (IM) drive. The accuracy of the state estimation using the EKF depends heavily on the input voltages, which are typically supplied by the inverter. In contrast to previous research that used a low-precision ideal inverter model, this study employs a high-performance EKF observer based on a practical model of the inverter that takes into account the dead-time effects and voltage drops of switching devices. To demonstrate the effectiveness of the EKF digital twinning on the IM drive system, simulations were run using the MATLAB/Simulink software (R2022a), and results are compared with a set of actual data coming from a 4 kW three-phase IM as a physical entity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Digital Twin Model of Electric Drives Empowered by EKF

Ebadpour

Jamshidi

Talla

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…This strategy, however, suffers from the drawback of potential error between the actual and reference current as well as its suitability for only closed-loop control of current. Some have devised a strategy of calculating the current polarity angle and place a high significance on the angle between the current vector and rotor flux angle [18].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Power Converters Performance by an Efficient Use of Dead Time Compensation Technique

et al. 2020

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The advent of renewable energy resources and distributed energy systems herald a new set of challenges of power quality, efficient distribution, and stability in the power system. Furthermore, the power electronic converters integration has been increased in interfacing alternate energy systems and industries with the transmission and distribution grids. Owing to the intermittency of renewable energy resources and the application of power electronic converters the power distribution faces peculiar challenges. The dead-time effects are among the main challenges, which leads to the distortion of third harmonics, phase angle, torque pulsation, and induction motor current, causing severe quality problems for power delivery. To tackle these problems, this paper proposes a novel dead time compensation technique for improving the power quality parameters and improving the efficiency of power converters. The proposed model is simulated in MATLAB and the parametric equations are plotted against the corresponding parametric values. Furthermore, by implementing the proposed strategy, significant improvements are attained in the torque pulsation, speed, and total harmonic distortion of the induction motor. The comparisons are drawn between with and without dead time compensation technique, the former shows significant improvements in all aspects of the power quality parameters and power converters efficiency.

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“…The switching devices of the inverters such as IGBT and MOSFET are not ideal switches, they have finite turn-ON/turn-OFF times which may provide shoot-through on the DC link [1]. To overcome this issue, the deadtime is introduced, which assures that the switches of one leg are not closed at the same time.…”

Section: Introductionmentioning

confidence: 99%

Improved dead-time elimination method for three-phase power inverters

Aboelsaud

Ibrahim

Garganeev

et al. 2020

IJPEDS

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In real inverters' operations, it is essential to insert delay time in the pulses provided to the inverter switches to protect the DC link against the short circuits. From this situation, the dead time phenomenon is introduced that causes undesirable performance and distortion of the output signal. Previously, researchers have proposed various schemes for compensating or eliminating dead-time. In this paper, a new dead-time elimination (DTE) scheme is proposed with a guarantee algorithm to eliminate dead-time and overcome the issues produced at the zero-currents-crossing point (ZCC). This method does not require additional hardware or filters to determine the polarity of the output current, and its principle is very simple to implement. The developed DTE method completely removes the dead-time issues on the magnitude and phase of the output voltage, and avoid the problems which can be induced around the ZCC. The results confirm the effectiveness and safety of this method.

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Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter

Cited by 8 publications

References 20 publications

Digital Twin Model of Electric Drives Empowered by EKF

Digital Twin Model of Electric Drives Empowered by EKF

Improvement of Power Converters Performance by an Efficient Use of Dead Time Compensation Technique

Improved dead-time elimination method for three-phase power inverters

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