Analysis of cascaded multilevel inverters for active harmonic filtering in distribution networks

Panda, Anup Kumar; Patnaik, Sushree Sangita

doi:10.1016/j.ijepes.2014.10.034

Cited by 42 publications

(20 citation statements)

References 29 publications

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“…However, the capacitor design deals with the power factor constraint. The filter design constraint in Equation (16) limits the size of the capacitor. 10f g << f res << 0.5f s (15)…”

Section: Lcl Filter Designmentioning

confidence: 99%

Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM

2017

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Three-phase two-level voltage source converters are used for distribution static compensator (DSTATCOM) applications and can be replaced by a multilevel inverter. In this paper, an LCL filter interfaced cascaded H-bridge multilevel inverter-based (CHBMLI) DSTATCOM is simulated and its performance is analyzed considering the system parameters. The analysis considers factors including the switching frequency, modulation index, and filter parameters of a DSTATCOM system. The LCL filter design and analysis for the low switching frequency operation of CHBMLI is proposed in this paper. Phase shift pulse-width modulation is used for the generation of switching signals. The reference current is generated using synchronous reference frame theory (SRFT) for reactive power and harmonic compensations. The simulation model of the CHBMLI-based DSTATCOM system is developed in MATLAB Simulink. The results are demonstrated for a linear/non-linear load under unbalanced conditions, considering the voltage sag and swell in the system due to a disturbance in the load.

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“…However, the capacitor design deals with the power factor constraint. The filter design constraint in Equation (16) limits the size of the capacitor. 10f g << f res << 0.5f s (15)…”

Section: Lcl Filter Designmentioning

confidence: 99%

Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM

2017

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“…However, multi‐level inverter (MLI) operates with lesser switching frequency, and the harmonic elimination capability is quite high compared with these two level inverters. So, MLIs are preferable to operate as a SAF and extend effective performance in high power applications . so it has been commonly recognized by researchers and industrialists.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a cascaded transformer coupled multilevel inverter-based shunt active filter under different grid voltage conditions

Dash

Panda

Patel

et al. 2018

Int Trans Electr Energ Syst

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Summary The paper describes the design aspect and control logic of a cascaded multilevel inverter‐based shunt active filter by employing single‐phase toroidal core transformers in cascaded manner which enable to operate with a single DC‐link capacitor. The presented topology uses a single DC‐link capacitor, thus minimizing the number of sensors and controller for voltage balancing. The induction of cascaded toroidal core transformer makes the system highly reliable as it minimizes the failure possibility of the DC‐link capacitor. For reference current generation, a perfect harmonic cancelation (PHC) control technique is implemented which is insensitive to distorted input condition and frequency deviation. To verify the effectiveness of the PHC controller, it is compared with a well‐known id‐iq control technique under ideal and non‐ideal supply main conditions. Furthermore, the developed topology is validated through MATLAB simulation and its prototype along with a well‐known DSP‐based FPGA controller.

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“…Various multilevel inverters configurations are proposed and used in the harmonics elimination and reactive power compensation, such as the multilevel Cascade H-bridge Inverter [11][12][13][14], Flying Capacitor Multilevel Inverter [15][16][17], and the multilevel neutral-point-clamped (NPC) Inverter [18][19][20][21][22][23]. The NPC inverters are the most widely used topology and successfully employed in medium and high power applications in the harmonics elimination and reactive power compensation for electrical networks [18].…”

Section: Introductionmentioning

confidence: 99%

“…Some other works use a conventional three-level three dimensional space vector modulation strategy (C3L-3DSVM) for a fourleg NPC inverter [29][30][31][32], this strategy have been widely used in generation of gate switching pulses for three-level four leg NPC inverter based SAPF and DSTATCOM, as this strategy can fixed switching frequency, reduce commutation losses and harmonic contents of output voltage [14,15], and can obtain higher amplitude modulation indexes and high quality of output SAPF voltages waveforms. The drawback of these strategies is the unbalance of dc bus voltage capacitors for three-level four leg NPC inverters, this unbalanced is affected the loading of certain capacitor and unloading the other capacitor and causing harmful effects, such as the inverter output voltages distorted and from deteriorating any further in the level of inverter is increase, because of the proliferation midpoints between the capacitors.…”

Section: Introductionmentioning

confidence: 99%

“…In all of them publications, have confirmed that the SAPF with SRF theory has simple structure, easy to realized and good harmonics extracting than others theories. The Synchronous Reference Frame theory is analyzed for three leg two level SAPF, Shunt Hybrid Active Power Filter (SHAPF) [35,37], and the DSTATCOM [38,39], and in four leg two level SAPF and DSTATCOM [3,14]. This concept has been extended by simulation studies to three-level NPC three and four leg SAPFs [30,40] using the same loads model presented in [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A new balancing three level three dimensional space vector modulation strategy for three level neutral point clamped four leg inverter based shunt active power filter controlling by nonlinear back stepping controllers

Chebabhi

Fellah

Kessal³

et al. 2016

ISA Transactions

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Analysis of cascaded multilevel inverters for active harmonic filtering in distribution networks

Cited by 42 publications

References 29 publications

Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM

Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM

Design and implementation of a cascaded transformer coupled multilevel inverter-based shunt active filter under different grid voltage conditions

A new balancing three level three dimensional space vector modulation strategy for three level neutral point clamped four leg inverter based shunt active power filter controlling by nonlinear back stepping controllers

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