Online harmonic elimination pulse width modulation technique for modular multilevel cascade converter

Amjad, Abdul Moeed; Mehran, Kamyar; Gadoue, Shady; Blaabjerg, Frede

doi:10.1016/j.ijepes.2021.107242

Cited by 4 publications

(7 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, they increase the power rating thanks to their increased output-modulated voltages since the blocking voltage of each switch is one-half that of the DC link voltage [9][10][11][12]. Furthermore, their output voltage waveform is improved and, consequently, the voltage harmonic content is reduced compared to that of two-level converters with the same switching frequency [13,14].…”

Section: Introductionmentioning

confidence: 99%

A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation

Ghennam,

Belhadji,

Rizoug

et al. 2024

Energies

View full text Add to dashboard Cite

Wind power systems, which are currently being constructed for the electricity worldwide market, are mostly based on Doubly Fed Induction Generators (DFIGs). To control such systems, multilevel converters are increasingly preferred due to the well-known benefits they provide. This paper deals with the control of a standalone DFIG-based Wind Energy Conversion System (WECS) by using a three-level Neutral-Point-Clamped (NPC) converter. The frequency and magnitude of the stator output voltage of the DFIG are controlled and fixed at nominal values despite the variable rotor speed, ensuring a continuous AC supply for three-phase loads. This task is achieved by controlling the DFIG rotor currents via a PI controller combined with a new Simplified Direct Space Vector Modulation strategy (SDSVM), which is applied to the three-level NPC converter. This strategy is based on the use of a line-to-line three-level converter space vector diagram without using Park transformation and then simplifying it to that of a two-level converter. The performance of the proposed SDSVM technique in terms of controlling the three-level NPC-converter-based standalone WECS is demonstrated through simulation results. The whole WECS control and the SDSVM strategy are implemented on a dSPACE DS 1104 board that drives a DFIG-based wind system test bench. The obtained experimental results confirm the validity and performance in terms of control.

show abstract

Section: Introductionmentioning

confidence: 99%

A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation

Ghennam,

Belhadji,

Rizoug

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…Hence, real-time implementation of these algorithms is not always realistic. Recently, various online solution techniques of HEPWM method have been presented to address these problems [11], [12], [13], [14], [15], [16], [17].…”

Section: Introductionmentioning

confidence: 99%

“…However, the solution process is not fast enough as it requires computational time of tens of fundamental time period. A rapid online differential evolution-Newton Raphson (DE-NR) algorithm is presented in [14] to solve HEPWM equations. DE-NR algorithm is a combination of DE and NR algorithms.…”

Section: Introductionmentioning

confidence: 99%

“…Solution process is completed in less than a fundamental time period, which depicts the faster behavior of DE-NR algorithm. However, in these algorithms [12], [13], [14], input voltages of SMs are considered equal (termed as symmetric HEPWM), which contradicts the real-time operation of MMCCs where dynamic operating conditions lead to unequal magnitude of input voltage sources (asymmetric HEPWM). Hence, these methods are prone to underperformance, and their application for the online solution of asymmetric HEPWM needs to be discussed.…”

Section: Introductionmentioning

confidence: 99%

“…Compact table obtained during the offline solution is utilized to present a novel online solution framework for the symmetric and asymmetric HEPWM methods. Rapid convergence of the online M-EO-LM algorithm compared with the online DE-NR algorithm [14] is also established. Simulation and online experimental results are presented, which verify the applicability of the M-EO-LM algorithm for the online solution of HEPWM method.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Complete Online Solution of Harmonic Elimination PWM Method Using Modified-Equilibrium Optimizer-Levenberg- Marquardt Algorithm

2023

Self Cite

View full text Add to dashboard Cite

This paper proposes a novel online solution, i.e. Modified-Equilibrium Optimizer-Levenberg-Marquardt (M-EO-LM) algorithm, for the symmetric and asymmetric harmonic elimination pulse width modulation (HEPWM) methods of the modular multilevel cascaded converters. A detailed comparison of the proposed M-EO-LM algorithm with nine state-of-the-art algorithms is also presented for twenty-nine unimodal, multimodal and composite benchmark test functions. M-EO-LM has proven its effectiveness by outperforming these algorithms. EO algorithm is first introduced for the solution of HEPWM method. Its comparison with several state-of-the-art algorithms depicts its superiority; but it gets stuck in the local minima. Modified-EO (M-EO) solves the problem by enhancing its exploration ability, and is then attached to a rapid calculus-based LM method to form the novel M-EO-LM algorithm. M-EO-LM algorithm initiates the solution process by solving the HEPWM equations for nine angles (N = 9 and 0.78 ≤ M ≤ 6.86) offline in only two iterations, depicting its remarkable convergence ability. Solution angles are then divided into several groups, serving as the search space for the online M-EO-LM algorithm. A comparison between HEPWM and nearest level modulation methods based on the output voltage THD values is provided to report the maximum number of solvable HEPWM angles for a complete online solution. These angles (N = 8 and 0.78 ≤ M < 5.18) are then solved online using the M-EO-LM algorithm. Comparing the computational times of the proposed online algorithm with differential evolution-Newton Raphson algorithm proves the rapid solution behavior of the M-EO-LM algorithm, validated through the simulation and realtime experimental results.INDEX TERMS Harmonic elimination PWM, modular multilevel cascade converter, fundamental voltage control, harmonic control, equilibrium optimizer, Levenberg-Marquardt algorithm.

show abstract

A Fast Electromagnetic Transient Modeling for Modular Multilevel Converter

Wang,

Yue,

Zhang

et al. 2024

2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia)

View full text Add to dashboard Cite

Online harmonic elimination pulse width modulation technique for modular multilevel cascade converter

Cited by 4 publications

References 30 publications

A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation

A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation

A Complete Online Solution of Harmonic Elimination PWM Method Using Modified-Equilibrium Optimizer-Levenberg- Marquardt Algorithm

A Fast Electromagnetic Transient Modeling for Modular Multilevel Converter

Contact Info

Product

Resources

About