Random PWM Technique for Dual-Inverter-Fed Vector-Controlled Induction Motor Drive

Reddy, M. Harsha Vardhan; Reddy, T. Bramhananda; Reddy, B. Ravindranath; Kalavathi, M. Surya

doi:10.1007/s40313-015-0212-4

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…In this topology, the switching time of each inverter is obtained from instantaneous reference voltages. Hence, it can generate different PWM signals using instantaneous reference voltages of the two inverters [32][33][34][35][36][37].…”

Section: Open-end Winding Induction Motor Drive (Oewimd)mentioning

confidence: 99%

A Scalar Decoupled PWM Technique for a Three-Level Symmetrical Dual Inverter Fed OEWIM Drive for Electric Vehicle

Venugopalan

Jegathesan

Reddy

2021

IJRER

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Dual inverter (DI) fed induction motor drives are employed in electric vehicle to control the speed and obtain better performance. Asymmetrical DI, which uses traditional SVPWM, produce a remarkably high common-mode voltage (CMV). The motor bearings are affected, and EMI problems occurs due to the common-mode current. Hence, to overcome this problem and to control a three-level symmetrical DI fed Open End Winding Induction Motor (OEWIM), a novel PWM generation technique named scalar decoupled PWM topology is proposed in this paper. Two three-level inverters are connected to the open-end winding induction motor in this work and a carrier-based scalar technique with decoupled PWM is proposed where the modulating signal can be varied to obtain both continuous and discontinuous modes of operation. In this proposed topology, switching signals of the inverter 1 and 2 can be generated and controlled separately. To examine the efficiency of the proposed topology, its operation under both continuous and discontinuous modes of operation is carried out in simulation and experimental set up. From the acquired results, it is concluded that this proposed topology exhibits reduced CMV and harmonics when compared to traditional PWM topology.

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Section: Open-end Winding Induction Motor Drive (Oewimd)mentioning

confidence: 99%

A Scalar Decoupled PWM Technique for a Three-Level Symmetrical Dual Inverter Fed OEWIM Drive for Electric Vehicle

Venugopalan

Jegathesan

Reddy

2021

IJRER

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“…Using sinusoidal PWM (SPWM), the inverter harmonic was concentrated in distinct zones located around the switching frequency and its integer multiples . Accordingly, space vector PWM (SVPWM) would offer reduced current and torque ripples, compared with SPWM .…”

Section: Introductionmentioning

confidence: 99%

“…9,10 Using sinusoidal PWM (SPWM), the inverter harmonic was concentrated in distinct zones located around the switching frequency and its integer multiples. 8,11 Accordingly, space vector PWM (SVPWM) would offer reduced current and torque ripples, compared with SPWM. 12,13 The voltage harmonics were also decreased and were concentrated around integer multiples of the VSI switching frequency.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of PWM strategy effect on acoustic noise generated by inverter‐fed induction machine

Bouyahi

Smida

Khedher

2019

Int Trans Electr Energ Syst

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Summary Three‐phase voltage source inverters (VSIs) provide high‐order harmonic voltages. The feed of a power induction machine by a VSI increases the acoustic noise, which becomes unacceptable especially for applications requiring a moderate level such as electrical traction. It has been found that the noise level depends on the total harmonic distortion of the VSI. Thus, the level of harmonics depends on the pulse width modulation (PWM) techniques used to control the VSI. Several PWM techniques have been developed in the literature, such as space vector PWM, selective harmonic elimination PWM, and random PWM. This paper presents a study of the PWM impact on the acoustic noise generated by a two‐level inverter‐fed induction machine. The acoustic noise and harmonic spectrum are carried out corresponding the three PWM techniques at a couple of machine operation conditions. The experimental results show that the acoustic noise is significantly reduced with the random PWM strategy. A comparative study is presented and discussed in this paper.

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Comparison of Decoupled and Coupled PWM Techniques for Open-End Induction Motor Drives

Reddy

Deepak

Venkateswaralu

2020

Lecture Notes in Electrical Engineering

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Random PWM Technique for Dual-Inverter-Fed Vector-Controlled Induction Motor Drive

Cited by 4 publications

References 24 publications

A Scalar Decoupled PWM Technique for a Three-Level Symmetrical Dual Inverter Fed OEWIM Drive for Electric Vehicle

A Scalar Decoupled PWM Technique for a Three-Level Symmetrical Dual Inverter Fed OEWIM Drive for Electric Vehicle

Experimental study of PWM strategy effect on acoustic noise generated by inverter‐fed induction machine

Comparison of Decoupled and Coupled PWM Techniques for Open-End Induction Motor Drives

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