Dead-Time and Semiconductor Voltage Drop Compensation for Cascaded H-Bridge Converters

Mora, Andrés; Juliet, Jorge; Santander, Alex; Lezana, Pablo

doi:10.1109/tie.2016.2563378

Cited by 40 publications

(12 citation statements)

References 24 publications

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“…The switches and the diodes are analyzed with ideal components. However, in reality, the required dead time depends on the turn-off characteristics of the used semiconductor switches [12]. When the dead-time length is chosen, the changes in the switch characteristics with load current and temperature must be considered [13].…”

Section: Dead-time Effectmentioning

confidence: 99%

Nonlinear Effect of Dead Time in Small-Signal Modeling of Power-Electronic System Under Low-Load Conditions

Berg

Roinila

2020

IEEE J. Emerg. Sel. Topics Power Electron.

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Section: Dead-time Effectmentioning

confidence: 99%

Nonlinear Effect of Dead Time in Small-Signal Modeling of Power-Electronic System Under Low-Load Conditions

Berg

Roinila

2020

IEEE J. Emerg. Sel. Topics Power Electron.

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“…For circuits with bridge structures such as single-phase PWM rectifiers, there is still a problem, that is, zero-current clamping effects will arise from the addition of deadtime. After adding the dead-time, the current waveform will be distorted at zero crossing, reducing the current sinusoidal degree and increasing the current THD [29][30][31]. However, the above literatures on model predictive control did not consider the impact of deadtime when establishing predictive models, so the established predictive models were not accurate enough.…”

Section: Introductionmentioning

confidence: 99%

Model Predictive Current Control with Fixed Switching Frequency and Dead-Time Compensation for Single-Phase PWM Rectifier

et al. 2021

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The research object of this paper is single-phase PWM rectifier, the purpose is to reduce the total harmonic distortion (THD) of the grid-side current. A model predictive current control (MPCC) with fixed switching frequency and dead-time compensation is proposed. First, a combination of an effective vector and two zero vectors is used to fix the switching frequency, and a current prediction equation based on the effective vector’s optimal action time is derived. The optimal action time is resolved from the cost function. Furthermore, in order to perfect the established prediction model and suppress the current waveform distortion as a consequence of the dead-time effect, the dead-time’s influence on the switching vector’s action time is analyzed, and the current prediction equation is revised. According to the experimental results, the conclusion is that, firstly, compared with finite-control-set model predictive control, proportional-integral-based instantaneous current control (PI-ICC) scheme and model predictive direct power control (MP-DPC), the proposed MPCC has the lowest current THD. In addition, the proposed MPCC has a shorter execution time than MP-DPC and has fewer adjusted parameters than PI-ICC. In addition, the dead-time compensation scheme successfully suppresses the zero-current clamping effects, and reduce the current THD.

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“…However accurate motor parameters and complex calculations are major downsides to this approach. The effects of parasitic capacitances of power devices are also important in the context of the compensation method [26]. The dead-time causes an error in the modulation voltage.…”

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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Dead-Time and Semiconductor Voltage Drop Compensation for Cascaded H-Bridge Converters

Cited by 40 publications

References 24 publications

Nonlinear Effect of Dead Time in Small-Signal Modeling of Power-Electronic System Under Low-Load Conditions

Nonlinear Effect of Dead Time in Small-Signal Modeling of Power-Electronic System Under Low-Load Conditions

Model Predictive Current Control with Fixed Switching Frequency and Dead-Time Compensation for Single-Phase PWM Rectifier

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

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