Implementation of selective harmonic minimization PWM on seven-level cascaded h-bridge inverter with improved inverter performances and equal power sharing among cells

Kundu, Sourabh; Burman, Arka Deb; Giri, Santu Kr.; Mukherjee, Sahana; Banerjee, Subrata

doi:10.1109/icpedc.2017.8081113

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…The weighted value of THD (WTHD) is proposed as a method to compare various modulation algorithms. The expression of WTHD is shown in (8). In it, the lower portion of the frequency spectra is weighted more heavily…”

Section: Develop Ga-pso For Optimising Svpwm Sequencesmentioning

confidence: 99%

“…The 5th, 7th, 13th, 17th, 22th, and 23th harmonic components by GA-PSO② are >0.5%, but only the 5th, 7th, 17th, and 23th harmonic components by GA-PSO③ are >0.5%. According to (8), the lower the harmonic frequency, the greater the weight coefficient, and the influence on WTHD value is greater. Therefore, the WTHD by GA-PSO③ is smaller than GA-PSO②.…”

Section: Optimal Svpwm Sequencesmentioning

confidence: 99%

“…In [6], a novel SVPWM strategy was proposed for two-level three-phase VSI, which could eliminate the harmonics nearby PWM frequency. In [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], probabilistic optimisation algorithm was applied for harmonic control. In their work, the authors in [10][11][12] optimised SVPWM sequences to improve harmonic performance, and the authors in [12][13][14][15][16][17][18][19][20][21][22][23][24][25] controlled harmonics using PSO.…”

Section: Introductionmentioning

confidence: 99%

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GA–PSO approach for optimising space‐vector PWM control sequence

Ning¹,

Dai²,

Peng³

2019

IET Power Electronics

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Space-vector pulse width modulation (SVPWM) provides several degrees of freedom, which can be optimised to improve the harmonic performance of the three-phase inverter. Genetic algorithm (GA) and immune algorithm (IA) are the two classical probabilistic optimisation algorithms, which are simple in structure and do not need an accurate mathematical model. However, the optimisation accuracy and reliability are low when they optimise the high-dimensional non-linear problem, such as SVPWM control sequence of the three-phase inverter. To cope with these problems, a genetic algorithm-particle swarm optimisation (GA-PSO) is proposed here, which introduces the mutation of GA into discrete PSO. The global and local optimisation ability of the algorithm is greatly improved by the introduction of mutation operation. The results of MATLAB/ SIMULINK simulation show that the weighted total harmonic distortion (WTHD) by the optimal SVPWM control sequence based on GA-PSO is 0.199%, which is much better than that of the PSO, IA, and GA. The average generation number of GA-PSO is only 1/500 of IAs. Further experimental data verify that the WTHD by the optimal SVPWM control sequence based on GA-PSO is lower than that of conventional SVPWM and IA.

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Section: Develop Ga-pso For Optimising Svpwm Sequencesmentioning

confidence: 99%

Section: Optimal Svpwm Sequencesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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GA–PSO approach for optimising space‐vector PWM control sequence

Ning¹,

Dai²,

Peng³

2019

IET Power Electronics

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“…It ensures even power‐sharing between each H‐bridge cells, but it is unable to meet the grid code limits because it can mitigate low‐order harmonics up to 17th order. Thus, it is a challenging task to satisfy the power quality standards CIGRE WG 36‐05 and EN 50160 as well as ensuring even power‐sharing between the H‐bridge cells with the least number of switching instances …”

Section: Introductionmentioning

confidence: 99%

“…Thus, it is a challenging task to satisfy the power quality standards CIGRE WG 36-05 and EN 50160 as well as ensuring even power-sharing between the H-bridge cells with the least number of switching instances. 38 This paper presents an improved SHM-PWM scheme to tackle aforesaid drawbacks. The proposed SHM-PWM exhibits some advantages as mentioned below:…”

mentioning

confidence: 99%

An improved SHM‐PWM scheme for three‐phase seven‐level CHB inverter to improve power quality by fulfilling CIGRE WG 36‐05 and EN 50160 and sharing equal power between the H‐bridge cells

Kundu

Banerjee

2019

Int Trans Electr Energ Syst

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Summary This paper presents an improved selective harmonic minimization (SHM)‐pulse width modulation (PWM) scheme using three‐phase seven‐level cascaded H‐bridge (CHB) inverter suitable for medium‐voltage distribution systems by achieving high‐quality voltage waveform with least number of switching instances (ie, each power semiconductor devices switched once in a quarter period). Here, each isolated DC voltage sources have been taken as variable and unequal for the CHB inverter. The efficacy of the proposed SHM‐PWM scheme over selective harmonic elimination (SHE)‐PWM scheme and existing SHM‐PWM scheme has been verified through a comparative inverter performance analysis with equal number of switching instances. Both simulation and experimental results prove that the proposed SHM‐PWM scheme ensures equal percentage of power‐sharing between the H‐bridge cells, achieves desired fundamental voltage component, minimizes each individual odd nontriplen harmonics, and limits %total harmonic distortion (THD) up to 25th‐order harmonics such that, it satisfies the power quality standards CIGRE WG 36‐05 and EN 50160 for the entire modulation index range. It is also seen that the proposed scheme requires least no of switching (three) than other reported SHE‐/SHM‐PWM schemes to meet the aforesaid power quality standards. It also results lower inverter losses and improves efficiency compared with conventional schemes. Finally, the scheme is applied to a closed‐loop control of induction motor driven by back‐to‐back PWM‐controlled converter.

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