A Review of Multilevel Selective Harmonic Elimination PWM: Formulations, Solving Algorithms, Implementation and Applications

Dahidah, Mohamed; Konstantinou, Georgios; Agelidis, Vassilios G.

doi:10.1109/tpel.2014.2355226

Cited by 489 publications

(253 citation statements)

References 118 publications

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“…SHE-PWM algorithms avoid generation of low order harmonics due to the switching operation [34], [35]. Hence, SHE-PWM is suitable to avoid the excitation of power system resonances.…”

Section: A Selective Harmonic Elimination Pwmmentioning

confidence: 99%

“…Hence, SHE-PWM is suitable to avoid the excitation of power system resonances. SHE is achieved by a optimum (off-line) selection of switching modulation patterns, which strongly depends on the power converter topology (number of levels), modulation index and grid phase-angle [35]. Real time implementation of SHE-PWM algorithms is challenging as it requires complex techniques, such as the use of look-up tables with precalculated firing angles [35] or the implementation of timedependent carriers [34].…”

Section: A Selective Harmonic Elimination Pwmmentioning

confidence: 99%

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Harmonic resonances in Wind Power Plants: Modeling, analysis and active mitigation methods

Freijedo

Chaudhary

Teodorescu

et al. 2015

2015 IEEE Eindhoven PowerTech

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Abstract-This work reviews the state-of-the-art in the field of harmonic resonance problems in Wind Power Plants (WPPs). Firstly, a generic WPP is modeled according to the equivalent circuits of its passive and active components. Main focus is put on modeling active components, i.e. the ones based on power converters. Subsequently, pros and cons of frequency and time domain analysis methods are outlined. The next sections are devoted to mitigation methods implemented in the power electronics converters. From the wind turbine perspective, different techniques to enhance the robustness of the controller are analyzed. Subsequently, the suitability for active damping of harmonics using STATCOM devices is assessed, with focus both on control techniques and power converter technologies.

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“…SHE-PWM algorithms avoid generation of low order harmonics due to the switching operation [34], [35]. Hence, SHE-PWM is suitable to avoid the excitation of power system resonances.…”

Section: A Selective Harmonic Elimination Pwmmentioning

confidence: 99%

Section: A Selective Harmonic Elimination Pwmmentioning

confidence: 99%

Harmonic resonances in Wind Power Plants: Modeling, analysis and active mitigation methods

Freijedo

Chaudhary

Teodorescu

et al. 2015

2015 IEEE Eindhoven PowerTech

View full text Add to dashboard Cite

show abstract

“…A minimisation process for the ZSCC was demonstrated in [12], however, if a formulation of the circulating current is not explicitly set within the equations, then i circ,x and the ZSCC cannot be accurately controlled. The SHE-PWM problem is defined as a single system of equations throughout the whole modulation index (m a ) range [11].…”

Section: Selective Harmonic Elimination Pwm a Problem Formulatimentioning

confidence: 99%

“…The five-level formulation needs to consider both the number of transitions within the quarter period (N ) as well as their distribution (N 1 /N ) in the different levels of the waveforms [11], as shown in Fig. Fig.…”

Section: Selective Harmonic Elimination Pwm a Problem Formulatimentioning

confidence: 99%

“…Selective harmonic elimination pulse-width modulation (SHE-PWM) offers tight control of the low-order voltage harmonics and is well-suited for high-power, low switching frequency applications [11]. However, exact elimination of harmonics is critical to the timing of transitions and deviation from the pre-calculated patterns can have an adverse effect on the accuracy of the method.…”

Section: Introductionmentioning

confidence: 99%

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Reducing circulating currents in interleaved converter legs under selective harmonic elimination pulse-width modulation

Konstantinou

Pou

Capella

et al. 2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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Abstract-Interleaving of voltage source converter legs enables higher output currents per phase, effectively increasing the power rating without increasing semiconductor ratings. Different switching patterns between the converter legs increase the number of Thevenin output voltage levels and, hence, the quality of the waveform but also generate circulating currents within one phase. This paper proposes a controller for interleaved converter legs under selective harmonic elimination pulse-width modulation (SHE-PWM) aimed at reducing the circulating current within the legs of each phase. The controller is used in combination with optimally selected SHE-PWM patterns to minimise the peak value of the circulating current. The proposed controller is applied in two interleaved three-level active neutral-pointclamped converters and simulation results demonstrate their performance.

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Neutral‐Point‐ClampedDC–ACPower Converters

Busquets‐Monge

2018

Wiley Encyclopedia of Electrical and Electronics Engineering

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This article reviews the fundamentals of multilevel multiphase neutral‐point‐clampedDC–ACpower converters. These converters are configured with one or more legs and a commonDC‐link. Each leg is functionally equivalent to a single‐pole multiple‐throw switch (n ≥ 3 positions) and it is implemented with a combination of only power semiconductor devices. The main leg topologies are initially presented, both active(transistor) clamped and passive(diode) clamped, for any number of levels. The leg switching states enabling all possible leg positions are subsequently discussed. Then, the set of all possible converter switching states and their standard representation in the converter space vector diagram is systematically derived, starting from the simplest converter (single‐phase single‐leg) up to the most complex converter with an arbitrary number of phases. The space vector diagram is illustrated for three‐, four‐, andn‐levels in the usual single‐phase and three‐phase cases. Once the converter states have been characterized, the most common converter control approaches are introduced on the basis of the space vector diagram, including space vector control, space vector modulation, programmed pulse width modulation, hysteresis control, and predictive control. These control strategies are illustrated in simple and conventionalDC–ACconverter configurations. Finally, the article discusses theDC‐link capacitor voltage balance problem, which is inherent to these topologies whenever theDC‐link is configured with a capacitive voltage divider. The basics of the different solutions to guarantee the balancing are presented, both through the inclusion of additional hardware and through the application of a suitable converter control strategy.

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A Review of Multilevel Selective Harmonic Elimination PWM: Formulations, Solving Algorithms, Implementation and Applications

Cited by 489 publications

References 118 publications

Harmonic resonances in Wind Power Plants: Modeling, analysis and active mitigation methods

Harmonic resonances in Wind Power Plants: Modeling, analysis and active mitigation methods

Reducing circulating currents in interleaved converter legs under selective harmonic elimination pulse-width modulation

Neutral‐Point‐ClampedDC–ACPower Converters

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