A new technique to reject DC-link voltage ripple for inverters operating on programmed PWM waveforms

Enjeti, P.N.; Shireen, Wajiha

doi:10.1109/63.124589

Cited by 110 publications

(25 citation statements)

References 7 publications

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“…The opposite holds for (13), where the positive-sequence component appears as a second harmonic and the negative-sequence component appears as dc. The dc components of (12) and (13) are extracted with the use of a low-pass filter.…”

Section: A D-statcom Mathematical Model For Unbalanced Conditionsmentioning

confidence: 86%

“…The positive-and negative-sequence load currents are calculated from three-phase currents with the use of the transformation into the positive-and negative-sequence reference frames [(12) and (13)] as presented in Section III, part A. The second harmonic component in (12) and (13) is filtered with a halfperiod sliding window filter.…”

Section: E Reference Currents and DC Voltage Determinationmentioning

confidence: 99%

“…The outputs of the controller are the required converter voltages, which makes the algorithm suitable for high-power applications. The problem of dc-voltage distortion is solved with an appropriate modulation of the switching function [13] so that in comparison with traditional solutions, the dc-side capacitor does not have to be overrated. The algorithm is tested by means of simulation where two cases are observed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved D-StatCom control for operation with unbalanced currents and voltages

Blažič

Papič

2006

IEEE Trans. Power Delivery

105

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This paper presents a new D-StatCom control algorithm which enables separate control of positive-and negative-sequence currents and decoupled control of -and -axes current components. The algorithm is based on the developed mathematical model in the -coordinates for a D-StatCom operating under unbalanced conditions. The problem of dc-side voltage ripple and ac-side harmonics generation due to unbalanced voltages/currents is solved by using switching function modulation, enabling the use of a relatively small capacitor on the dc side. The control algorithm is also suitable for high-power applications using multipulse voltage-source converters. The algorithm is tested by means of detailed simulation using PSCAD, where the performance is validated in the case of severe network fault and in the case of unbalanced load compensation. The compensator voltages are generated by means of pulsewidth modulation.

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Section: A D-statcom Mathematical Model For Unbalanced Conditionsmentioning

confidence: 86%

Section: E Reference Currents and DC Voltage Determinationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improved D-StatCom control for operation with unbalanced currents and voltages

Blažič

Papič

2006

IEEE Trans. Power Delivery

105

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“…A minimization method was proposed in [16], in order to find the complete sets of solutions for two-level, three-phase converters where the dc-bus voltage is assumed to be constant. In [17], an active feed-forward method was proposed to immune the dc-bus voltage ripple from creating low-order harmonics on the motor-side.…”

Section: Introductionmentioning

confidence: 99%

DC-bus capacitorless rectifier-inverter motor drive with online optimized harmonic controlled PWM

Flourentzou

Konstantinou

Agelidis

2010

2010 IEEE International Conference on Industrial Technology

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A dc-bus capacitorless rectifier-inverter motor drive is discussed in this paper. Two three-phase, two-level voltage-source converters (VSCs) are connected back-to-back to form an AC-AC regenerative converter. Only the motoring operation of the regenerative converter is studied in this paper. The lack of a dc-bus capacitor results in low-frequency dc voltage ripple following the rectification of the ac utility source and such ripple would cause low-order harmonics being fed to the motor. These harmonics are eliminated by a method based on selective harmonic elimination pulse-width modulation (SHE-PWM) being further optimized online. Simulations and experimental results are presented in order to confirm the validity of the proposed motor drive.

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“…The most significant harmonic 0885-8977/$26.00 © 2010 IEEE introduced to the dc-side voltage spectrum by an unbalanced three-phase ac-network is the 2nd harmonic [9]. Inverters with 2nd harmonic on the dc bus generate the third harmonic on the ac side [10]. The elimination of inverter low-order harmonics with fluctuating input voltage is described in [11].…”

mentioning

confidence: 99%

Optimized Modulation for AC–DC Harmonic Immunity in VSC HVDC Transmission

Flourentzou

Agelidis

2010

IEEE Trans. Power Delivery

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Control methods based on selective harmonic elimination pulse-width modulation (SHE-PWM) techniques offer the lowest possible number of switching transitions. This feature also results in the lowest possible level of converter switching losses. For this reason, they are very attractive techniques for the voltage-source-converter-(VSC) based high-voltage dc (HVDC) power transmission systems. The paper discusses optimized modulation patterns which offer controlled harmonic immunity between the ac and dc side. The application focuses on the conventional two-level converter when its dc-link voltage contains a mix of low-frequency harmonic components. Simulation and experimental results are presented to confirm the validity of the proposed switching patterns.

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A new technique to reject DC-link voltage ripple for inverters operating on programmed PWM waveforms

Cited by 110 publications

References 7 publications

Improved D-StatCom control for operation with unbalanced currents and voltages

Improved D-StatCom control for operation with unbalanced currents and voltages

DC-bus capacitorless rectifier-inverter motor drive with online optimized harmonic controlled PWM

Optimized Modulation for AC–DC Harmonic Immunity in VSC HVDC Transmission

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