Multi Level Voltage Space Phasor Generation for an Open-End Winding Induction Motor Drive Using a Dual Inverter Scheme with Asymmetrical DC-Link Voltages

Somasekhar, V. T.; Shivakumar, E. G.; Gopakumar, K.; Pittet, A.

doi:10.1080/09398368.2002.11463508

Cited by 48 publications

(45 citation statements)

References 4 publications

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“…The open-end four-level topology has predominantly been investigated for three-phase drives [6][7][8][9][10], in conjunction with the space vector modulation (SVM) technique. The SVM algorithm developed in [6] requires large look-up tables in order to identify the sector in which the reference is positioned and the switching sequences to be applied.…”

Section: Introductionmentioning

confidence: 99%

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Decoupled modulation techniques for a four-level five-phase open-end winding drive

Jones

Darijevic

Levi

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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AbstractThe paper studies pulse width modulation (PWM) techniques for a five-phase multilevel open-end winding drive with two inverters supplied with unequal dc-link voltages, which are in the ratio 2:1. It is shown in the paper that application of in-phase disposition modulation (PD-PWM), often used in multiphase multilevel converters, results in overcharging of the capacitor in the dc-link of the converter intended to operate at the lower dc voltage. The voltage space vector combinations which lead to the overcharging are identified and two decoupled modulation techniques which do not activate the troublesome vector combinations are proposed. The performance of the developed modulation techniques is investigated using simulations and an experimental prototype, and the results are presented in the paper.

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Section: Introductionmentioning

confidence: 99%

“…The SVM algorithm developed in [6] requires large look-up tables in order to identify the sector in which the reference is positioned and the switching sequences to be applied. This makes the scheme difficult to implement.…”

Section: Introductionmentioning

confidence: 99%

Decoupled modulation techniques for a four-level five-phase open-end winding drive

Jones

Darijevic

Levi

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…The use of the continuous modulating signal with common level shifting carrier signals produces a conventional continuous modulating signal based PWM technique as discussed in [21].…”

Section: Conventional Continuous Modulating Signal Based Scalar mentioning

confidence: 99%

“…This setup is called a dual inverter configuration, which is popular in high power applications (e.g., submarine, electric vehicles, and electric locomotives). This particular configuration can be classified into symmetrical [20] and asymmetrical [21] configurations (Fig. 2) based on the application of input DC voltage.…”

Section: Introductionmentioning

confidence: 99%

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Reduction of Common Mode Voltage in Asymmetrical Dual Inverter Configuration Using Discontinuous Modulating Signal Based PWM Technique

Reddy¹,

Reddy²,

Reddy³

et al. 2015

Journal of Power Electronics

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Conventional space vector pulse width modulation based asymmetrical dual inverter configuration produces high common mode voltage (CMV) variations. This CMV causes the flow of common mode current, which adversely affects the motor bearings and electromagnetic interference of nearby electronic systems. In this study, a simple and generalized carrier based pulse width modulation (PWM) technique is proposed for dual inverter configuration. This simple approach generates various continuous and discontinuous modulating signals based PWM algorithms. With the application of the discontinuous modulating signal based PWM algorithm to the asymmetrical dual inverter configuration, the CMV can be reduced with a slightly improved quality of output voltage. The performance of the continuous and discontinuous modulating signals based PWM algorithms is explored through both theoretical and experimental studies. Results show that the discontinuous modulating signal based PWM algorithm efficiently reduces the CMV and switching losses.

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Hybrid space‐vector pulse width modulation strategies for a four‐level open‐end winding induction motor drive with an improvised harmonic performance and balanced DC ‐link capacitors

Lakhimsetty

Kumar

Somasekhar

2021

Int Trans Electr Energ Syst

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Summary The four‐level open‐end winding induction motor (4‐L OEWIM) drive is constituted by two 2‐level voltage source inverters (VSIs), wherein their DC‐link voltages should be maintained in the ratio of 2:1. Owing to the unsymmetrical structure of the power circuit, the 4‐L OEWIM drive is plagued with the drawback of capacitor voltage imbalance. The DC‐link capacitor of one of the inverters, which is operated with the lower voltage level, that show the propensity of getting charged up by its higher voltage counterpart, belonging to the other inverter. In this article, two variants of space‐vector pulse width modulation (SVPWM) schemes are suggested for the 4‐L OEWIM drive. The suggested sample based SVPWM techniques achieve the voltage balancing of the DC‐link capacitors, while improving the harmonic performance of the drive. Specifically, one of the two proposed PWM schemes manages to clamp one of the inverters in every sampling time interval. Hence this scheme results in lowering the total harmonic distortion (THD) in the no‐load current in most of the operating range of the drive, resulting in lower ripple in the motor phase current, lower ohmic loss and reduced torque ripple. The performances of the proposed PWM techniques are assessed with the aid of simulation studies and are validated with the experimentation.

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Multi Level Voltage Space Phasor Generation for an Open-End Winding Induction Motor Drive Using a Dual Inverter Scheme with Asymmetrical DC-Link Voltages

Cited by 48 publications

References 4 publications

Decoupled modulation techniques for a four-level five-phase open-end winding drive

Decoupled modulation techniques for a four-level five-phase open-end winding drive

Reduction of Common Mode Voltage in Asymmetrical Dual Inverter Configuration Using Discontinuous Modulating Signal Based PWM Technique

Hybrid space‐vector pulse width modulation strategies for a four‐level open‐end winding induction motor drive with an improvised harmonic performance and balanced DC ‐link capacitors

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