Locomotive drive harmonic pollution in AC traction systems

Firpo, P.; Fracchai, M.; Savio, S.

doi:10.1109/isie.1993.268733

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…., the harmonic components is distributed around the even multiples of f c (for example, if f m ¼ 50 Hz, f c ¼ 1,250 Hz, the high harmonics are distributing at 2,500^50 Hz, 2,500^100 Hz, 5,000^50 Hz, 5,000^100 Hz, etc.). As the carrier frequency is periodic, the energy of the modulated signal will focus on the multiples of the carrier frequency, which results in serious EMI problem (Sheng et al, 2009;Firpo et al, 1993;Ogasa et al, 1997;Foiadelli et al, 2005).…”

Section: ð2þmentioning

confidence: 99%

The application of chaotic PWM control for EMI suppression

Lin²,

Li³

et al. 2013

COMPEL

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Purpose -Four-quadrant AC-DC converters are one kind of the most common and popular AC-DC converters, which are serious EMI sources. The purpose of this paper is to propose a novel control for four-quadrant AC-DC converters to suppress the generated electromagnetic interference (EMI). Design/methodology/approach -A chaotic carrier plays an important role to implement the chaotic PWM control. The relationship between the EMI distribution and carrier frequency is given by deducing and analyzing the harmonic components of the AC-DC converter. The comparison of chaotic PWM control and random PWM control in suppressing EMI are provided. Findings -The simulation results prove the effectiveness of the proposed chaotic PWM control on EMI reduction. Research limitations/implications -The effects of EMI suppression under different chaotic carriers will be theoretically analyzed in the future work. Practical implications -The proposed chaotic PWM control can suppress EMI for converters without adding additional devices or components, therefore, without increasing the volume, weight and cost of converters. Originality/value -In this paper, a novel chaotic pulse width modulation (PWM) control is proposed and implemented into a four-quadrant AC-DC converter for electromagnetic interference (EMI) suppression, moreover, the total harmonic distortion (THD) of the input AC current is also improved under chaotic PWM control.

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Section: ð2þmentioning

confidence: 99%

The application of chaotic PWM control for EMI suppression

Lin²,

Li³

et al. 2013

COMPEL

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“…As the carrier frequency is constant, the energy of the signal modulated will concentrate on the multiples of the carrier frequency, which results in rich harmonics, waveform distortion, and thus, power pollution [23][24][25][26]. Since f m , the frequency of the modulated signal, is much less than the carrier frequency f c , the harmonic components are distributed around the even multiples of f c .…”

Section: Harmonic Components Of a Four-quadrant Convertermentioning

confidence: 99%

“…Since f m , the frequency of the modulated signal, is much less than the carrier frequency f c , the harmonic components are distributed around the even multiples of f c . As the carrier frequency is constant, the energy of the signal modulated will concentrate on the multiples of the carrier frequency, which results in rich harmonics, waveform distortion, and thus, power pollution [23][24][25][26].…”

Section: Harmonic Components Of a Four-quadrant Convertermentioning

confidence: 99%

Suppressing harmonics in four‐quadrant AC‐DC converters with chaotic SPWM control

Lin

et al. 2012

Circuit Theory & Apps

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In this paper, a new chaotic sinusoidal pulse width modulation (chaotic SPWM) control is proposed and implemented in a four-quadrant AC-DC converter for harmonics suppression, where a chaotic carrier plays a key role. Further, the relationship of the harmonic distribution and carrier frequency is derived by analyzing the harmonic components of the AC-DC converter, which is useful for revealing the operation principle of the chaotic SPWM control for harmonic suppression. Finally, the simulation and experimental results illustrate the effectiveness of the proposed chaotic SPWM control on harmonics reduction. Copyright

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Assessment of AC traction substation influence on energy quality in a supplying grid

Jefimowski

Szeląg

2018

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This article presents investigations performed on a 25 kV AC system with a Scott transformer simulation model. The model includes an energy quality parameter calculation algorithm with consideration to the train timetable. The simulation results enable an analysis of the energy quality parameters at the point of connection of the traction substation to the supplying grid. The presented tool enables the simultaneous calculation of voltage unbalance and harmonic content. The article presents the results of the energy quality analysis at the substation connection point for the specific location. The simulation results of the energy quality parameters are appraised on the basis of standard EN 50160:2010. The tool may prove helpful in the process of designing electrification systems, especially in the choice of traction transformer and power electronics device mitigating an imbalance and harmonic impact.

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Locomotive drive harmonic pollution in AC traction systems

Cited by 3 publications

References 3 publications

The application of chaotic PWM control for EMI suppression

The application of chaotic PWM control for EMI suppression

Suppressing harmonics in four‐quadrant AC‐DC converters with chaotic SPWM control

Assessment of AC traction substation influence on energy quality in a supplying grid

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