Comparative study between different SVPWM algorithms for NPC inverters in terms of common mode voltage reduction

Ezzeddine, Kawther; Hamouda, Mahmoud; Al‐Haddad, Kamal

doi:10.1109/iecon.2017.8217125

Cited by 8 publications

(11 citation statements)

References 21 publications

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“…. This method is referred to LMZV method [42,43]. Another CMVR method can completely eliminate the CMV through the application of two medium vectors and one zero vector, since the latter produce a zero CMV.…”

Section: Topology Schematic Representation Features Limitationsmentioning

confidence: 99%

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A Comprehensive Review on Space Vector Based-PWM Techniques for Common Mode Voltage Mitigation in Photovoltaic Multi-Level Inverters

Ben Mahmoud,

Khedher

2024

Energies

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Nowadays, transformer-less photovoltaic (PV) multi-level inverters (MLIs) are commonly employed in both industrial and residential settings. This structure has attracted increased attention due to its unique advantages, such as higher efficiency, lower cost and size, better waveform quality, and inherent fault tolerance. However, due to the removal of the transformer, the common mode voltage (CMV) becomes one of the crucial issues in transformer-less PV MLIs. The high-frequency variation in CMV results in a leakage current that deteriorates the line current quality, increases the PV power system losses, leads to severe electromagnetic emissions (EMI), reduces the PV array lifespan, and causes personal safety problems. In this regard, this paper presents a review of the existing and recent research on modulation techniques based on space vector pulse width modulation (SVPWMs) that overcome this issue in transformer-less three-level NPC-MLIs (3L-NPC-MLIs). The reduced CMV-SVPWM (RCMV-SVPWM) can be mainly categorized as an RCMV-SVPWM based on the vector type, based on virtual vectors, and based on the two-level SVPWM (2L-SVPWM). Their features and their limitations in terms of several main criteria are discussed. In the final section of this paper, some challenges and future trends for this research area are projected.

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Section: Topology Schematic Representation Features Limitationsmentioning

confidence: 99%

“…This CMVR method is denoted as 2M1ZV [44]. However, three nearest active medium vectors are applied to synthesize the reference vector in three medium vectors (3MV) method [42,44]. Virtual Space Vector PWM (VSVPWM) introduces a fresh concept for addressing the CMV issue.…”

Section: Topology Schematic Representation Features Limitationsmentioning

confidence: 99%

A Comprehensive Review on Space Vector Based-PWM Techniques for Common Mode Voltage Mitigation in Photovoltaic Multi-Level Inverters

Ben Mahmoud,

Khedher

2024

Energies

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“…The CMV in a grid-connected 3L-NPC inverter is usually defined as the potential between the neutral point 'n' of the grid and the negative DC bus rail 'N' such that [17]…”

Section: In the 3l-npc Invertermentioning

confidence: 99%

“…The CMV in a grid‐connected 3L‐NPC inverter is usually defined as the potential between the neutral point ‘ n ’ of the grid and the negative DC bus rail ‘N’ such that [17]

v_{CM} = v_{n N} = \frac{1}{3} (v_{a N} + v_{b N} + v_{c N}) - (v_{a n} + v_{b n} + v_{c n}),

v_{a n}

v_{b n}

, and

v_{c n}

are the inverter's poles voltages referred to the neutral point ‘ n ’ of the grid.

v_{a N}

v_{b N}

, and

v_{c N}

are the inverter's poles voltages referred to the negative DC bus rail ‘N’.…”

Section: Conventional Dpc Algorithm For 3l‐npc Inverter and CMV Issuesmentioning

confidence: 99%

“…Indeed, due to the lack of galvanic isolation, the high-frequency variation of this voltage induces a leakage current that may circulate to the ground through the leakage capacitor that links the PV cells to the grounded frame. This current worsens the quality of the line current, increases the power conversion system's loss and electromagnetic emissions (EMI), and would shorten the life time of the PV cells [1,[15][16][17]. According to the German standards VDE-0126-1-1, the recommended leakage current amplitude is limited to 300 mA in transformerless PV systems [3].…”

Section: Introductionmentioning

confidence: 99%

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Direct power control with common mode voltage reduction of grid‐connected three‐level NPC inverter

Mahmoud

Hamouda

Khedher

2019

IET Power Electronics

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This paper proposes three new direct power control (DPC) algorithms which minimise the variation of the common mode voltage (CMV) provided by a transformerless grid-connected three-level neutral point clamped (3L-NPC) inverter. The proposed techniques make use of three reduced switching tables designed with the aim to control the active and reactive powers and to minimise the variation of the CMV. The first switching table uses large, medium and zero vectors of the space vector diagram; it is therefore named large medium zero vectors DPC. The second table uses the medium and zero vectors. It is referred to as medium zero vectors DPC. The third one namely medium vectors DPC, uses only medium vectors. Numerical simulations and experimental tests carried out on a laboratory prototype of the 3L-NPC inverter confirm the feasibility and effectiveness of the proposed algorithms.

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SVPWM based double loop control method of a three phase inverter for Microgrid Application

Ram Prasad Reddy,

Deepak,

Rami Reddy

et al. 2024

E3S Web of Conf.

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Many AC Microgrids required an inverter for converting power from DC to AC. Many control techniques are available and need a flexible control method which can able to regulate both the voltage at DC and AC side. The DQ method is developed in this paper by incorporated with space vector pulse width modulation (SVPWM) technique. A distribution generator (DG) is considered in this paper for connecting to utility grid through an inverter controlled by proposed double loop control technique. One voltage controlled loop and one current controlled loop are used in proposed control method to regulate both voltage and current. This paper showcases comprehensive findings using MATLAB/Simulink.

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Comparative study between different SVPWM algorithms for NPC inverters in terms of common mode voltage reduction

Cited by 8 publications

References 21 publications

A Comprehensive Review on Space Vector Based-PWM Techniques for Common Mode Voltage Mitigation in Photovoltaic Multi-Level Inverters

A Comprehensive Review on Space Vector Based-PWM Techniques for Common Mode Voltage Mitigation in Photovoltaic Multi-Level Inverters

Direct power control with common mode voltage reduction of grid‐connected three‐level NPC inverter

SVPWM based double loop control method of a three phase inverter for Microgrid Application

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