Analysis of power and power spectral density in PWM inverters with randomized switching frequency

Kirlin, R.L.; Bech, Michael Møller; Trzynadlowski, A.M.

doi:10.1109/41.993282

Cited by 97 publications

(26 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FFT (which is originally discrete) leads to a continuous random spectrum, depending on the considered signal sample, thus the (PSD) is more appropriate for such signals [21,22]; it can be expressed as follows: A numerical estimation of the PSD based on expression (8) and called the Welch method [22] is available in MatLab Software. This method is very satisfactory; it gives very good results compared to the measurement and to analytical ones [11,[19][20][21][22]. In this work, the analysis of line-to-line voltage v ab is carried out using the (PSD) estimated by the Welch method.…”

Section: Analysis Of the Output Voltagementioning

confidence: 99%

“…Generally, the analysis of random signals can be performed either by fast Fourier transform (FFT) or by PSD [9,11,16,[19][20][21]. The FFT (which is originally discrete) leads to a continuous random spectrum, depending on the considered signal sample, thus the (PSD) is more appropriate for such signals [21,22]; it can be expressed as follows: A numerical estimation of the PSD based on expression (8) and called the Welch method [22] is available in MatLab Software.…”

Section: Analysis Of the Output Voltagementioning

confidence: 99%

See 1 more Smart Citation

Combined random space vector modulation for a variable speed drive using induction motor

et al. 2015

View full text Add to dashboard Cite

and analyzed in steady-state characteristics of the motor\ud B\ud Aimad Boudouda\ud aimad.boudouda@gmail.com\ud Nasserdine Boudjerda\ud n_boudjerda@yahoo.fr\ud Khalil El Khamlichi Drissi\ud drissi@lasmea.univ-bpclermont.fr\ud Kamal Kerroum\ud Kamal.KERROUM@lasmea.univ-bpclermont.fr\ud 1\ud Department of Electrical Engineering, University Mohamed\ud Seddik Ben Yahia, Jijel, Algeria\ud 2\ud Pascal Institute, Blaise Pascal University, Clermont Ferrand,\ud France\ud in closed loop, which is advantageous in reducing acoustic\ud nois

show abstract

Section: Analysis Of the Output Voltagementioning

confidence: 99%

Section: Analysis Of the Output Voltagementioning

confidence: 99%

Combined random space vector modulation for a variable speed drive using induction motor

et al. 2015

View full text Add to dashboard Cite

show abstract

“…By the power spectrum analysis method [4], [5], [11], power spectral density function with traditional PWM strategy is as fellows: …”

Section: B Model Of Power Density Spectrummentioning

confidence: 99%

Analysis and spectral characteristics of a PWM rectifier with frequency jitter and random pulse width modulation techniques

Zhao

et al. 2011

2011 International Conference on Electrical and Control Engineering

View full text Add to dashboard Cite

The acoustic noise spectrum in power electronic system is closely related to the spectrum of the voltage waveform and can be reduced by avoiding the concentration of harmonic energy in distinct tones. Frequency jitter and randomized pulse width modulation are two methods to reduce mechanical vibration and acoustic noise in power electronic. These two techniques can make the harmonic spectrum of inverter output voltage be continuously distributed without affecting the fundamental frequency component. In this paper, Frequency jitter and randomized PWM rectifier and its practical design procedure are presented.

show abstract

“…The Welch method is based on estimating the autocorrelation sequence of a random process from a set of measured data, and then taking the Fourier transform of autocorrelation sequence to obtain the power spectrum estimate [7] Welch method of estimation allows the segments to overlap and windowing the segments before computing periodogram. The periodogram of the windowed segments will be a modified periodogram and averaging these modified periodograms will give the Welch estimate of power spectrum [8].…”

Section: Comparison Of Theoretical and Experimental Psdmentioning

confidence: 99%

A New Random PWM Technique for Conducted-EMI Mitigation on Cuk Converter

Kumar¹,

Muhilan²,

Sathiskumar³

et al. 2015

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-Electromagnetic Interference (EMI) is a system to system or environment to system phenomenon. The literature survey proved that the Randomized Pulse Width Modulation (RPWM) technique is a promising technique to reduce EMI. A new Constant Trailing Edge, Randomized Pulse Width Modulation (CTERPWM) technique is proposed in this paper. The effect of the proposed RPWM technique for mitigation of conducted-EMI on Cuk converter operating in Continuous Conduction Mode (CCM) is simulated and tested. In this paper, the analytical expressions for the Power Spectral Density (PSD) are derived for the proposed RPWM technique and are validated by experimental measurements. The effectiveness of the proposed RPWM technique on the mitigation of conducted-EMI is verified comparing simulation and experimental results and it is identified that both the results are almost similar with allowable experimental deviations. The comparative investigation proves that the proposed RPWM technique can mitigate and spread the dominant peaks of conducted-EMI over the complete spectrum for the Cuk converter. Based on the investigation the CTERPWM technique is recommended for adoption.

show abstract

Analysis of power and power spectral density in PWM inverters with randomized switching frequency

Cited by 97 publications

References 9 publications

Combined random space vector modulation for a variable speed drive using induction motor

Combined random space vector modulation for a variable speed drive using induction motor

Analysis and spectral characteristics of a PWM rectifier with frequency jitter and random pulse width modulation techniques

A New Random PWM Technique for Conducted-EMI Mitigation on Cuk Converter

Contact Info

Product

Resources

About