Mixed PWM for Dead-Time Elimination and Compensation in a Grid-Tied Inverter

Wang, Yong; Gao, Qiang; Cai, Xu

doi:10.1109/tie.2011.2112313

Cited by 83 publications

(36 citation statements)

References 16 publications

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“…In the past, various methods have been proposed, especially for single and three-phase systems, where dead-time compensation has been made possible by the means of calculating and compensating the voltage error [13][14][15], or by the use of current control methods [10], [16] knowledge of the system parameters and the phase current polarity, which causes difficulties in implementation. An interesting modification of the method was presented in [17] where the output from the d-axis PI controller was used to estimate the voltage error that needs to be compensated.…”

Section: B Dead-time Compensationmentioning

confidence: 99%

Current Control Methods for an Asymmetrical Six-Phase Induction Motor Drive

Seng

Levi

Jones

et al. 2014

IEEE Trans. Power Electron.

241

188

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Abstract-Using the vector space decomposition (VSD) approach, the currents in a multiphase machine with distributed winding can be decoupled into the flux and torque producing α-β components, and the loss-producing x-y and zero-sequence components. While the control of α-β currents is crucial for flux and torque regulation, control of x-y currents is important for machine/converter asymmetry and dead-time effect compensation. In this paper, an attempt is made to provide a physically meaningful insight into current control of a six-phase machine, by showing that the fictitious x-y currents can be physically interpreted as the circulating currents between the two three-phase windings. Using this interpretation, the characteristics of x-y currents due to the machine/converter asymmetry can be analysed. The use of different types of x-y current controllers for asymmetry compensation and suppression of dead time induced harmonics is then discussed. Experimental results are provided throughout the paper, to underpin the theoretical considerations, using tests on a prototype asymmetrical six-phase induction machine.

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Section: B Dead-time Compensationmentioning

confidence: 99%

Current Control Methods for an Asymmetrical Six-Phase Induction Motor Drive

Seng

Levi

Jones

et al. 2014

IEEE Trans. Power Electron.

241

188

View full text Add to dashboard Cite

show abstract

“…A drawback is that, the control error between the current reference and the real output current may cause serious current zero-crossing distortions. In [17], a fundamental period of the current is divided into the nonzero-crossing zone and the zero-crossing zone, where the dead-time elimination PWM and the conventional PWM are respectively applied, so that the accuracy requirement of the current-polarity detection can be reduced. Similarly, an immune-algorithm-based dead-time elimination scheme was proposed in [18] for the single-phase inverter, and applying different schemes in nonzero-crossing and zero-crossing zones.…”

Section: Introductionmentioning

confidence: 99%

A DSOGI-FLL-Based Dead-Time Elimination PWM for Three-Phase Power Converters

Yan

Zhao

Yuan

et al. 2019

IEEE Trans. Power Electron.

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“…These effects are more pronounced at high switching frequencies. The effects of dead time for two-level voltage-source converters have been comprehensively studied, and different solutions have been proposed [4]- [7]. However, majority of the proposed dead time compensation schemes in the literature operate under limited modulation index to avoid the saturation of the gating pulses.…”

Section: Introductionmentioning

confidence: 99%

Vector based dead-time compensation for a three-level T-type converter

Xiong

Düşmez

Akin

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper proposes a new vector based dead time compensation method for a three-level T-type converter. The origin of the dead time voltage error is analyzed in detail under different switch commutation processes and load conditions. Based on the dead time voltage error for each phase, an error voltage vector is defined to indicate the effect of the dead time on the reference voltage vector from vector synthesis point of view. To cancel the dead time error voltage vector, the reference voltage vector is adjusted accordingly based on load current directions. Different from the studies presented in literature, the operation of the proposed dead time compensation method can be extended to over modulation region. The effectiveness and the advantages of the proposed vector based dead time compensation method are verified by both simulation and experimental results.978-1-4799-6735-3/15/$31.00 ©2015 IEEE

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Mixed PWM for Dead-Time Elimination and Compensation in a Grid-Tied Inverter

Cited by 83 publications

References 16 publications

Current Control Methods for an Asymmetrical Six-Phase Induction Motor Drive

Current Control Methods for an Asymmetrical Six-Phase Induction Motor Drive

A DSOGI-FLL-Based Dead-Time Elimination PWM for Three-Phase Power Converters

Vector based dead-time compensation for a three-level T-type converter

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