Extending the Linear Modulation Range to Full Base Speed Independent of Load Power Factor for a Multilevel Inverter Fed IM Drive

Majumder, Mriganka Ghosh; Roy, R.; Imthias, Mohammed; Gopakumar, K.; Umanand, L.; Jarzyna, Wojciech

doi:10.1109/tie.2019.2956373

Cited by 11 publications

(4 citation statements)

References 20 publications

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“…Thus, the magnitude of output voltage could be increased by 13.1% in the linear region. This improvement could be achieved without any topological change demanding more switches as that in [19], demonstrating the usefulness of the proposed scheme. Table 5 essentially gives a comparison with other 5-level inverters which attempts linear modulation range extension.…”

Section: Resultsmentioning

confidence: 77%

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Effective DC Link Utilization of Multilevel Dual Inverter With Single Source in the Maximal Distention Mode

Vasuda,

Johny,

Mathew

2024

IEEE Access

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This paper presents an effective voltage control scheme for an open-end winding (OEW) inverter topology with a single DC supply. The proposed configuration consists of a 3-level flying capacitor inverter at one end, and a floating capacitor fed 2-level inverter at the other end. This dual inverter configuration is operated in the maximal distention mode. i.e. the voltage ratio of the inverters is maintained at 4:1 to get the largest number of effective pole voltage levels. Maximal distention mode has the advantage of good power quality and low voltage stress. A major drawback of open-end winding inverter topology with a single source in maximal distention mode is the inability to charge balance the floating capacitor in the full space vector region, which limits the battery utilization as well as the magnitude of output voltage. In this work, a modified modulation technique is proposed to maintain the floating capacitor at the desired level, attaining a 13.1% increase in the output voltage magnitude, resulting in an improvement in the battery utilization in the same proportion, yielding a smaller and less expensive system. Simulation and experimental results corroborate the proposed modulation technique and voltage control scheme on a 3HP, 3-phase, 415V, 1440 rpm open-end winding induction motor.

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Section: Resultsmentioning

confidence: 77%

“…This uses only 21 switches as compared to that in [17], but extension achieved is only upto 0.945V dc . In [19], an OEWIM scheme capable of extending the linear modulation range to 0.955V dc is presented. However, this configuration requires a large number of switches (24 nos.)…”

Section: Introductionmentioning

confidence: 99%

Effective DC Link Utilization of Multilevel Dual Inverter With Single Source in the Maximal Distention Mode

Vasuda,

Johny,

Mathew

2024

IEEE Access

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“…In other words, the operation of an inverter in both the linear modulation and overmodulation modes requires two independent methods. Attractive overmodulation methods for two-level and multilevel inverters are proposed in literature [20][21][22][23][24] recently. Generally, these methods are performed through complex real-time calculation or lookup table implementation.…”

Section: Introductionmentioning

confidence: 99%

Level vector pulse width modulation for multilevel inverters

Qanbari

Tousi

Farhadi‐Kangarlu

2023

Circuit Theory & Apps

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SummaryIn this paper, a novel method named as level vector pulse width modulation (LVPWM) is proposed for multilevel inverters. Similar to the conventional space vector pulse width modulation (SVPWM), the proposed method is a vector‐based method in the α–β frame. Unlike the SVPWM, the variables of each of the α and β axes are considered separately. Instead of space vectors, level vectors are considered for the synthesis of the reference vectors. There is no need to consider multiple switching states, vectors, and large lookup tables in the algorithm. The appropriate switching states for the synthesis of the reference vectors are determined using simple computations at each sampling time. Generality for different inverter topologies, online implementation, simplicity of the algorithm and computations, independency of the algorithm complexity from the number of switching states, and easy extension to overmodulation region are the advantages of the proposed method. Implementation of the LVPWM in different inverter topologies is studied. The validation of the proposed modulation strategy is carried out by simulation and experimental results.

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“…voltage DC bus where WIPS has been taken as the case study in [22]. However, regardless of different DC-link voltages, greater utilization of the power inverters is highly expected [23]. A larger speed without field weakening could allow the machine to minimize its weight and volume considerately, which can be beneficial for MEA applications [24], [25].…”

mentioning

confidence: 99%

Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications

Huang

Yang

Giangrande

et al. 2022

IEEE Trans. Transp. Electrific.

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Extending the Linear Modulation Range to Full Base Speed Independent of Load Power Factor for a Multilevel Inverter Fed IM Drive

Cited by 11 publications

References 20 publications

Effective DC Link Utilization of Multilevel Dual Inverter With Single Source in the Maximal Distention Mode

Effective DC Link Utilization of Multilevel Dual Inverter With Single Source in the Maximal Distention Mode

Level vector pulse width modulation for multilevel inverters

Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications

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