A 3-D space vector modulation generalized algorithm for multilevel converters

Prats, M.M.; Franquelo, Leopoldo G.; Portillo, R.; Leon, Jose I.; Galván, E.; Carrasco, J.M.

doi:10.1109/lpel.2004.825561

Cited by 97 publications

(69 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 together with the proposed voltage balance controller have been implemented and executed under PSCAD environment. The modulation strategy introduced to generate the gating signals of the converter is the space vector modulation presented in [46]. The values of the system parameters considered in the simulation are summarized in Table 2.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Besides, the same system parameters described in Table 2 as well as the modulation strategy considered in the previous section have been used in the experiments. It is worth noticing that due to the low computational cost of the modulation strategy considered [46], there is no need of special software optimization of the controllers, so they can be directly implemented in the system.…”

Section: Experimental Verificationmentioning

confidence: 99%

See 1 more Smart Citation

Voltage balancing in three-level neutral-point-clamped converters via Luenberger observer

Umbría

Gordillo

Gómez-Estern

et al. 2014

Control Engineering Practice

View full text Add to dashboard Cite

This paper addresses the problems associated with the dc-link capacitor voltages of the three-level neutral-point-clamped power converter: the imbalance of the capacitor voltages as well as the presence of an ac-voltage low-frequency oscillation in the dc link of the converter. In order to cope with them, a mathematical analysis of the capacitor voltage difference dynamics, based on a direct average continuous model, is carried out, considering a singular perturbation approach. The analysis leads to a final expression where a sinusoidal disturbance appears explicitly. Consequently, the two problems can be handled together using the ordinary formulation of a problem of regulating the output of a system subject to sinusoidal disturbances, applying classical control theory to design the controller. In this way, the controller is designed including the disturbance estimate provided by a Luenberger observer to asymptotically cancel the disturbance, while keeping also balanced the capacitor voltages. Experiments for a synchronous threelevel neutral-point-clamped converter prototype are carried out to evaluate the performance and usefulness of the converter working as a grid-connected inverter under the proposed control law.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

Section: Experimental Verificationmentioning

confidence: 99%

Voltage balancing in three-level neutral-point-clamped converters via Luenberger observer

Umbría

Gordillo

Gómez-Estern

et al. 2014

Control Engineering Practice

View full text Add to dashboard Cite

show abstract

“…In the industry, it usually uses the following three methods: sinusoidal-triangular carrier modulation [2][3][4], space vector modulation combined with three-dimensional algorithm [5][6][7], the specific harmonic elimination method [8][9][10].It has the following characteristics: power switching devices bear the voltage stress is small; It requires a large number of clamp diodes while clamping the use of diodes to increase the total loss, reducing the conversion efficiency; There is a problem of DC capacitor voltage imbalance; It is difficult to ensure of the capacitor pressure the DC side; Its circuit structure is simple; It is more used in the UPS and photovoltaic inverter; It is mainly 3-level circuit, generally not more than five levels.…”

Section: Figure I Diode-clamped 3-level Topologymentioning

confidence: 99%

Research on Multi-level Inverter of Multi-terminal Switch Network and Extension Topology

Lei¹,

Xie²,

Li³

et al. 2018

Proceedings of the 2017 2nd International Conference on Electrical, Control and Automation Engineering (ECAE 2017)

View full text Add to dashboard Cite

Abstract-Due to multilevel inverters can have more levels of output voltage at the output waveform, closer to sine waves, and with small output waveform THD, and low voltage stress, low system advantages of EMI, multilevel inverters are widely recognized, and get a certain application. Based on the analysis of the characteristics of the basic multi-level inverter topology and the scope of application, this paper explores the idea and method of multi-level inverter topology using multi-terminal switch network. By comparing the new topology and basic topology, it can be seen that this new multi-level inverter topology is easy to expand, requiring small filter inductance volume and inductance, loss and low cost, which is an important direction for the development of topological circuits. The new multi-level topology has broadened the research scope of multi-level inverter topology and created new ideas and directions for multi-level topology research, which provides theoretical guidance for further scientific research and engineering applications.

show abstract

“…For example; the node that has the switching pattern (3,0,-1) means that the H-Bridges in phase a generates +3V, in phase b generates 0V and in phase c generates -V. The same output voltage of the inverter can be generated by other switching patterns for example (2,-1,-2) and (1,-2,-3). Many methods proposed in using space vector modulation of multilevel inverter [11,12,13].The method that is adopted in this work is proposed in [11], as it has the following feature:  It is very simple and effective.  The output voltage contains minimum distortion.…”

Section: Space Vector Modulation For 7-level Invertermentioning

confidence: 99%

Modelling and Simulation of a Sensorless Control of a True Asymmetric Cascade H-Bridge Multilevel Inverter PMSM Drives

Saleh¹,

Sumner²

2016

IJPEDS

View full text Add to dashboard Cite

This paper introduces a new method to track the saliency of an AC motor fed by a multilevel converter through measuring the dynamic current response of the motor line currents due the IGBT switching actions. The method uses only the fundamental PWM waveform (i.e there is no modification to the operation of the multilevel converter) similar to the fundamental PWM method proposed for a 2-level converter. Simulation results are provided to demonstrate the performance of the complete sensorless speed control of a PM motor driven by such a converter over a wide speed range. Finally the paper introduces a comparison between the 2-level converter and the multilevel converter in terms of the reduction of the total harmonic distortion (THD) using the fundamental PWM method in both cases.

show abstract

A 3-D space vector modulation generalized algorithm for multilevel converters

Cited by 97 publications

References 5 publications

Voltage balancing in three-level neutral-point-clamped converters via Luenberger observer

Voltage balancing in three-level neutral-point-clamped converters via Luenberger observer

Research on Multi-level Inverter of Multi-terminal Switch Network and Extension Topology

Modelling and Simulation of a Sensorless Control of a True Asymmetric Cascade H-Bridge Multilevel Inverter PMSM Drives

Contact Info

Product

Resources

About