A modulation technique for four-leg voltage source inverter without needing the look-up table

Ebrahimzadeh, Esmaeil; Farhangi, Sh.; Iman‐Eini, Hossein

doi:10.1109/pedstc.2014.6799376

Cited by 2 publications

(4 citation statements)

References 12 publications

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“…Considering the above points, the authors have proposed a modulation technique in [17]. In fact, this modulation technique simplifies the implementation of the conventional technique, while it does not need a look-up table and complex calculations; as well as reduces the computational burden.…”

Section: Introductionmentioning

confidence: 99%

“…However, this technique has the following problems: It requires a look‐up table that occupies a lot of memory space. For determination of a reference vector, the functions integer (INT)( x ) and sign( x ) are used which make the calculations more complex and increase the computational burden. In practice, a dead time must be inserted between turn‐on and the turn‐off of the power switch in a leg. In this technique, the dead time is not considered. Considering the above points, the authors have proposed a modulation technique in [17]. In fact, this modulation technique simplifies the implementation of the conventional technique, while it does not need a look‐up table and complex calculations; as well as reduces the computational burden.…”

Section: Introductionmentioning

confidence: 99%

“…In the literature, different sequencing schemes have been discussed and compared in various aspects such as total harmonic distortion (THD), switching loss and common‐mode issues [6, 18, 19]. However, the proposed approach in [17] has only been developed for Class II – falling‐edge aligned scheme. Furthermore, it has not been validated through experimental results.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, it has not been validated through experimental results. In this paper, the proposed technique in [17] is extended to various kinds of sequencing schemes and experimental results are provided to confirm the validity of the new method.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modulation technique for Four‐Leg Voltage Source Inverter without a Look‐Up Table

Ebrahimzadeh

Farhangi

Iman‐Eini

et al. 2016

IET Power Electronics

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Three-dimensional space-vector modulation (3D SVM) has more popularity among the other modulation techniques of the four-leg inverter due to higher DC-link voltage utilisation. Sequencing schemes of the switching vectors in the 3D SVM are divided into Class I and II categories. Each of these classes itself has four kinds: (a) risingedge aligned, (b) falling-edge aligned, (c) symmetrically aligned and (d) alternative sequence. In this study, implementation of the conventional 3D SVM technique in abc-coordinate for four-leg voltage source inverters is simplified, while it can be so easily adopted in all kinds of sequencing schemes. Unlike conventional techniques, the proposed technique needs no switching vector determination and duty ratio calculation as well as reduces the computational burden. In this technique, turn-on interval of the upper switches, in every switching period, is calculated without need of a look-up table and complex equations. Applying the dead time by software is very straightforward in the proposed technique. In addition, by simplification of the proposed modulation technique, it can be applied to the three-leg inverters. Simulation results in PSCAD/EMTDC environment confirm the validity and effectiveness of the proposed technique. Experimental results are also provided to confirm the validity of the new approach.

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Section: Introductionmentioning

confidence: 99%