A Speed Range Extension Scheme for Scalar-Controlled Open-End Winding Induction Motor Drives

Mohan, Lakshmi; Pant, Kaninika; Rajeevan, Rajeevan

doi:10.1109/tia.2022.3140284

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…Since there is no common DC-link, this configuration naturally eliminates zero-sequence circulating current. This drive configuration has the capability to extend the speed range as reported in the literature for three phase drives [8]- [11].…”

Section: Introductionmentioning

confidence: 97%

A Reactive Voltage Compensation-Based Control Scheme to Extend Speed Range in Five Phase Open-End Winding Induction Motor Drives

Mavila,

Rajeevan

2023

IEEE Access

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A reactive voltage compensation based control scheme for extending the speed range in dual inverter-fed five phase induction motor drives with open-end stator windings is proposed in this paper. In the dual inverter fed five phase drive topology used to implement the proposed control scheme, one inverter is powered from a DC source while a charged capacitor acts as the DC link of the other inverter. Since the control scheme is developed by considering the motor current vector as the reference, the motor voltage can be resolved into its active and reactive components. The capacitor fed inverter is controlled in such a way that it compensates the increasing reactive voltage drop inside the motor as the speed increases, thereby extending the constant power speed region of the drive. The scheme also ensures that the voltage across the capacitor is maintained at the required level, under all operating conditions of the drive. This feature also safeguards the capacitor against overcharging. In addition, the auxiliary plane harmonics generated by both inverters are nullified in an average sense, in a switching period. The proposed control scheme is substantially simpler compared to the existing schemes, due to the unified PWM scheme and reduction in PI controllers. The experimental validation of the proposed scheme is carried out on an open-end winding induction motor under transient as well as steady state operating conditions. TMS320F28335 DSP based digital controller is used for implementation of the control algorithm.

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Section: Introductionmentioning

confidence: 97%

A Reactive Voltage Compensation-Based Control Scheme to Extend Speed Range in Five Phase Open-End Winding Induction Motor Drives

Mavila,

Rajeevan

2023

IEEE Access

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“…Based on the number of sources used, open-end winding MLIs can be classified into two: single source topology and multi-source topology. Single source topology is of two types: (i) single source feeding both the inverters after eliminating common mode voltage [5], [6] (ii) single source feeding one inverter and the other inverter powered by floating capacitor [7]- [10]. The main disadvantage of the second scheme is its ineffective utilization of the linear modulation range due to floating capacitor charge balance issues.…”

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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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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“…It is worth mentioning that the dual inverters can also be supplied by a DC source and a floating capacitor. This configuration is mostly used for the drive of electric vehicles [7,8]. The focus of this article is on the dual inverter with a common DC source because of its cost-effective configuration.…”

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confidence: 99%

Sampling error‐based model‐free predictive current control of open‐end winding induction motor with simplified vector selection

Mousavi

Davari

Flores‐Bahamonde

et al. 2022

IET Electric Power Appl

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A sampling error‐based finite‐set predictive current control (FS‐PCC) is proposed in this article for the open‐end winding induction motor (OEWIM) drive. The proposed scheme controls the zero‐sequence current (ZSC) alongside the stator currents. In a model‐free approach, this method predicts the future of ZSC and stator current components by the stator current and voltage sampling errors. In this way, the parameters of the OEWIM are not utilised in the prediction algorithm of the FS‐PCC. So, the proposed method is robust against the variation of the parameter. Moreover, this article presents a simple vector selection technique for the FS‐PCC of the OEWIM. The proposed technique has two cost functions and a simple algebraic equation to put the voltage vectors (VVs) in the prediction algorithm. The first cost function uses VVs that do not have the zero‐sequence voltage component. Then, the algebraic equation determines VVs that must be utilised in the second cost function. Finally, the optimum VV is selected by the second cost function. In the proposed scheme, the prediction algorithm is iterated 14 times instead of 27 iterations of the conventional predictive algorithm. So, besides establishing a novel model‐free prediction algorithm, the proposed method has almost 50% fewer calculations. The validity of the proposed sampling error‐based FS‐PCC and the simplified vector selection technique has been verified through experimental tests.

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A Speed Range Extension Scheme for Scalar-Controlled Open-End Winding Induction Motor Drives

Cited by 4 publications

References 18 publications

A Reactive Voltage Compensation-Based Control Scheme to Extend Speed Range in Five Phase Open-End Winding Induction Motor Drives

A Reactive Voltage Compensation-Based Control Scheme to Extend Speed Range in Five Phase Open-End Winding Induction Motor Drives

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

Sampling error‐based model‐free predictive current control of open‐end winding induction motor with simplified vector selection

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