Analysis and comparison of space vector modulation schemes for a four-leg voltage source inverter

Prasad, V.H.; Borojevic, D.; Zhang, R.

doi:10.1109/apec.1997.575747

Cited by 87 publications

(50 citation statements)

References 5 publications

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“…A three-phase VSI has been implemented topologically by using either a three-phase three-leg inverter with split DC link capacitors or a three-phase four-leg inverter. In this study, the topology corresponding to the power circuit used in the simulations and real-time applications of the three-phase four-leg VSI is the same as the one given in [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Optimal digital control of a three-phase four-leg voltage source inverter

Özdemir¹,

Erdem²

2016

Turk J Elec Eng & Comp Sci

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This paper presents a three-dimensional (3-D) space vector pulse width modulation (SVPWM) technique via a 4 × 4 orthonormal transformation matrix that has been used as a new approach in controlling a three-phase four-leg voltage source inverter (VSI). A fully optimal digital control scheme for the closed-loop regulation of the three-phase four-leg VSI has been used to synthesize a sinusoidal waveform with the help of the proposed method. Discrete-time modelling of each phase has been obtained independently in abc reference frame, and its optimal controller has been designed using a predefined performance index. A DSP-based controlled three-phase four-leg prototype VSI has been designed to verify the proposed discrete time modelling and the control scheme. The simulations and the real-time experiments show that satisfactory results have been obtained for the modelling of the three-phase four-leg VSI in abc reference frame and the 3-D SVPWM technique via 4 × 4 orthonormal transformation matrix at 20 kHz switching frequency.

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Section: Introductionmentioning

confidence: 99%

Optimal digital control of a three-phase four-leg voltage source inverter

Özdemir¹,

Erdem²

2016

Turk J Elec Eng & Comp Sci

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“…It was then in the late 1990's that Space Vector Modulation techniques for these inverters were introduced [25]. This was around the same time that Zhang et al [2,13] introduced a new 3-Dimensional Space Vector Modulation technique which allowed the independent control of each of the 3 main output phases with respect to the neutral. The concepts which were introduced by Zhang were then later expanded upon by Ryan, Lorenz and De Doncker [11,12] who produced a mathematical grounding for this new SVM technique.…”

Section: The 4-leg Invertermentioning

confidence: 96%

“…However, once the neutral voltage is shifted from its mid point the simple PWM control of the 3-Leg 4-wire inverter is no longer enough, as and shift in the neutral voltage needs to be reflected in changes to all 3 phase voltages. As such, the Space Vector Modulation technique which is commonly used in 3-wire inverters was extended by Zhang et al in 1997 [2,13] to allow the control of the 4-Leg inverter. This method is briefly described below, after a short introduction to how Space Vector Modulation on a more normal 3-leg inverter.…”

Section: Space Vector Modulation Of the 4-leg 4-wire Invertermentioning

confidence: 99%

“…Now, while it is a relatively straightforward task to then calculate the duty cycles for those switching states for the 3-leg inverter, it becomes somewhat harder for the 4-leg inverter due to the number of different possible tetrahedrons. The solution proposed by Zhang is to use a lookup table which would define a matrix [2,13] that could be used to directly calculate the duty cycles, so for the example shown in Figure 2.6, the demand vector would be in Prism IV and Tetrahedron 1, and the duty cycles would be calculated as …”

Section: Space Vector Modulation Of the 4-leg 4-wire Invertermentioning

confidence: 99%

“…Extending this in the case of the matrix converter would result in a 3x4, or four-leg, matrix converter as shown in With the introduction of the fourth leg, this adds another output variable that needs to be controlled, and so the modulation techniques why apply to the 3x3 matrix converter [3][4][5][6] are no longer valid, and so a new modulation strategy needs to be formulated for this new arrangement. After the work by Huber and Borojevic [7][8][9][10] and later Casadei [3,4] on adapting space vector modulation (SVM) for use with the 3x3 matrix converter, and then Ryan and De Doncker [11,12] along with Zhang at al [2,13,14] for the work on 3-dimensional SVM for the 4-leg inverter, these both proved as useful pointers towards how a successful technique could be derived for the 4-leg Matrix Converter. Therefore, this work sets out to explore the design of a Space Vector Modulation technique that is capable of controlling a 4-leg matrix converter, and then goes on to detail the building and testing of such a converter.…”

Section: Introductionmentioning

confidence: 99%

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Space Vector Modulation for a 4-Leg Matrix Converter

Wheeler

Clare

Mason

IEEE 36th Conference on Power Electronics Specialists, 2005.

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THIS thesis covers the investigation into the use of Space Vector Modulation for the control of a 4-leg matrix converter, which is capable of providing a 3-phase plus neutral supply from a standard balanced 3-phase source. Traditional 3x3 matrix converters have limited use in this application as they are only capable of supplying a balanced three-phase load. It would be desirable to be able to power unbalanced and nonlinear loads, requiring that the converter provides a neutral connection. As with voltage source inverters, this goal can be achieved by extending the number of output legs in the matrix converter to four. In this thesis, a new Space Vector Modulation technique is proposed for this 4-leg, or 3x4, matrix converter. This technique is an extension of the method currently in use on 3x3 matrix converters, and so it allows the de-coupled control of both the input and output. The thesis then goes onto cover the build of a demonstration converter, looking at the different aspects which make up a converter, to finally go on to prove the theory, and a set of results are presented to validate this.ii

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Performance evaluation of continuous and discontinuous pulse width modulation techniques for grid-connected PWM converter

Fahem

Chariag

Sbita

2018

Int Trans Electr Energ Syst

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Summary Power quality has become an important issue as the number of nonlinear loads and power electronic equipment connected to the grid is continuously growing. Grid‐connected PWM converters have been largely exploited in many industrial applications; they still present an interesting research subject in terms of improving current waveform quality and providing an accurate DC‐link voltage. Besides the different control strategies proposed in the literature corresponded to a specific requirement performance, the modulation techniques also present a critical aspect in the design of the control system. In this paper, several modulation techniques including continuous and discontinuous modulations have been studied and analyzed for the control of grid‐connected PWM converter. An extensive simulation and experimental tests have been carried out in order to investigate the influence of the studied modulation techniques on the harmonic current distortion delivered by the converter under different unbalanced grid conditions.

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Analysis and comparison of space vector modulation schemes for a four-leg voltage source inverter

Cited by 87 publications

References 5 publications

Optimal digital control of a three-phase four-leg voltage source inverter

Optimal digital control of a three-phase four-leg voltage source inverter

Space Vector Modulation for a 4-Leg Matrix Converter

Performance evaluation of continuous and discontinuous pulse width modulation techniques for grid-connected PWM converter

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