Continuous PWM Strategies of Multi-Phase Inverter-Fed AC Drives

Halasz, S.

doi:10.3311/ppee.7161

Cited by 3 publications

(5 citation statements)

References 16 publications

(31 reference statements)

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“…For example for m = 4 or 5 one must use two coordinate systems while for m = 6 or 7 there will be three ones etc. [4], [5], [10]. For the latter case, the coordinate systems are given in Fig.…”

Section: State Of the Artmentioning

confidence: 99%

“…In this case the phase number of motor and inverter is bigger than 3. Advantages of multi-phase inverter-motor system, like better fault tolerance (it can operate even during phase open fault), lower motor torque ripples, smaller power rating of converter semiconductors and lower phase current for a given voltage rating, have been well evidenced in the past years [1]- [5]. These properties made multiphase machine suitable for special applications, like using them in electric cars.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly to three-phase system, most commonly Space Vector Modulation or Sinusoidal Modulation are used to control mutliphase drives. A detailed overview and comparison about PWM control methods of multiphase drives can be found in [3]- [5]. Analytic calculation of voltage harmonics is presented for multiphase inverters with an odd number of phases in paper [6].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Space Vector Based Investigation of Overmodulation Region of Inverter Fed Multiphase AC Drives

Stumpf

Bándy

Halasz

2021

2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC)

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Space vector investigation of multi-phase inverters in overmodulation region is presented in the paper to study ac motor harmonic losses. It is shown that, in full overmodulation region the optimization of additional switching angles of inverter does not ensure the acceptable decrease of motor harmonic losses. Therefore the motor voltage region above 80-87% of the inverter maximum possible value is virtually restricted at least for a steady state operation. At the same time, the space vector investigation of multi-phase system -in comparison to other methods of investigation and opposite to 3-phase system is more difficult and seems less effective.

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Section: State Of the Artmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Space Vector Based Investigation of Overmodulation Region of Inverter Fed Multiphase AC Drives

Stumpf

Bándy

Halasz

2021

2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC)

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“…In the field of modulation techniques of multi-phase VSIs, a variety of studies have been reported in recent decades [4]- [6], [17]- [21]. However, some areas still require further investigation.…”

Section: Introductionmentioning

confidence: 99%

“…The PWM technique is less complicated than other switching methods and is independent of the phase numbers. These advantages become more significant in applications with a large number of phases, where other methods are more complex [21], [22].…”

Section: Introductionmentioning

confidence: 99%

Analytical Calculation of Harmonics and Harmonic Losses in Five-Phase Carrier-Based PWM Voltage Source Inverters

2022

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The main purpose of this paper is to analyze a five-phase Voltage Source Inverter (VSI) that is operated with the Pulse Width Modulation (PWM) switching technique. Double Fourier integral (DFI) analysis has been used to extract the harmonics of the line-to-line voltages. Moreover, the harmonic current ripple has been calculated for an effective inductive five-phase load with a regular pentagon connection. Correspondingly, a new closed-form solution for calculating the harmonic losses in five-phase VSIs has been derived. In addition, a new equation for the weighted total harmonic distortion (WTHD) index has been extracted for five-phase VSIs. To validate the suggested analytical solutions (i.e., harmonic losses and WTHD equations), the results are compared with the DFI calculation method and the method of applying the fast Fourier transform (FFT) to a simulated waveform. The results show that the proposed analytical method has high accuracy and requires less mathematical effort, especially at high-frequency ratio values. Finally, the study includes simulation results and the implementation of an experimental setup.

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Z-Source Inverter Based Motor Drives for Industrial Medium Voltage Application

Prasad

Maity

2015

Period. Polytech. Elec. Eng. Comp. Sci.

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This paper presents an application of z-source inverter for industrial medium voltage drives. Z-source inverter based drive has advantages like boosting the output voltage during voltage sag, reducing harmonic distortion and improving the input power factor. Adjustable speed drives (ASD's) are interrupted due to voltage sag, reducing the manufacturing and financial losses. The medium voltage ac drives are limited to low value of switching frequency because of dynamic losses of the power devices. Using the proposed technique, it can remove those limitations. In this paper, the performance of traditional voltage source inverter is compared to that of z-source inverter for medium voltage drives under different operating conditions. Simulation results show the dynamic performance of z-source inverter based 225KW, 3.3KV induction motor drives during input supply fluctuation. The proposed closed loop control method provides nearly zero steady state speed error at any operating frequency.

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Continuous PWM Strategies of Multi-Phase Inverter-Fed AC Drives

Abstract: Abstract

Cited by 3 publications

References 16 publications

Space Vector Based Investigation of Overmodulation Region of Inverter Fed Multiphase AC Drives

Space Vector Based Investigation of Overmodulation Region of Inverter Fed Multiphase AC Drives

Analytical Calculation of Harmonics and Harmonic Losses in Five-Phase Carrier-Based PWM Voltage Source Inverters

Z-Source Inverter Based Motor Drives for Industrial Medium Voltage Application

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