System design considerations for a high-power aerospace resonant link converter

Jahns, T.M.; Doncker, Rik W. De; Radun, A.V.; Szczesny, P.M.; Turnbull, Fred G.

doi:10.1109/apec.1992.228348

Cited by 14 publications

(13 citation statements)

References 8 publications

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“…There is an increased interest in four-leg inverters for their use under unbalanced load conditions [1,2] especially in UPS and power systems applications. This paper deals with the comparison of space vector modulation schemes for a four-leg inverter with respect to: 1) total harmonic distortion (THD), and 2) switching losses.…”

Section: Introductionmentioning

confidence: 99%

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

Prasad

Borojevic²,

Zhang³

Proceedings of APEC 97 - Applied Power Electronics Conference

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Section: Introductionmentioning

confidence: 99%

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

Prasad

Borojevic²,

Zhang³

Proceedings of APEC 97 - Applied Power Electronics Conference

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“…Various modulation techniques have been introduced for four-leg inverter. A pulse-density modulation method for the resonant DC-link four-leg inverter was introduced in [7]. A three-level hysteresis modulator was proposed in [8] which leads to a variable switching frequency [6].…”

Section: Introductionmentioning

confidence: 99%

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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“…An established way to provide the neutral point for a fourwire inverter is to add an additional fourth leg, called a neutral leg to the conventional three-leg inverter [8], as shown in Fig. 1(b).…”

mentioning

confidence: 99%

“…Thus, the generation of a balanced neutral point in a simple and effective manner has become an important problem. Although dc to three-wire threephase electronic power converters have been widely studied in recent years [6], [7], dc to four-wire three-phase converters have received relatively little attention [8]- [10].…”

mentioning

confidence: 99%

$H^infty$Control of the Neutral Point in Four-Wire Three-Phase DC–AC Converters

Zhong

Liang

Feng

et al. 2006

IEEE Trans. Ind. Electron.

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Abstract-Inverters used as the interface for a distributed generator in a three-phase four-wire system sometimes operate with a large neutral current because of unbalanced loads and singlephase (possibly nonlinear) loads. Voltage balance within the dc-link of the inverter is important for proper operation of the inverter, and the neutral current is a significant disturbance to this. It is preferable to use fast acting control rather than dissipative balancing or large-valued capacitors. This paper develops a linear model of an actively balanced split dc-link and applies H ∞ control design to provide high-bandwidth robust control. The approach is developed for a conventional two-level inverter, but it remains valid (without change) for a three-level neutral-point clamped inverter. The controller achieves very small deviations of the neutral point (better than 0.5 in 800 V) from the midpoint of the dc source despite the large neutral current (32 A RMS ). The controller design is described and verified first in a PSCAD simulation and second in experimental testing of a 30-kW 415-V (line) inverter.Index Terms-DC-AC power converter, dc-link balancing, fourwire three-phase power system, H ∞ control, multilevel inverter, neutral line.

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System design considerations for a high-power aerospace resonant link converter

Cited by 14 publications

References 8 publications

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

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

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

$H^infty$Control of the Neutral Point in Four-Wire Three-Phase DC–AC Converters

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