Shaping the Noise Spectrum in Power Electronic Converters

Kirlin, R.L.; Lascu, C.; Trzynadlowski, A.M.

doi:10.1109/tie.2010.2076417

Cited by 83 publications

(43 citation statements)

References 16 publications

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“…Then the EMI noise peak can be reduced. Previous study of so called "random PWM" that changes the switching frequency randomly is highly depending on the statistic effect, and cannot control the current ripple and power losses [25], [26]. Based on the model predictive VSFPWM in two-level VSI [17], [18], this part will introduce the current ripple prediction model and model predictive VSFPWM for three-level inverter to reduce conducted EMI.…”

Section: Differential-mode Conducted Emi Reductionmentioning

confidence: 99%

Attenuation of Conducted EMI for Three-Level Inverters Through PWM

Chen

Jiang

2018

CPSS TPEA

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Section: Differential-mode Conducted Emi Reductionmentioning

confidence: 99%

Attenuation of Conducted EMI for Three-Level Inverters Through PWM

Chen

Jiang

2018

CPSS TPEA

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“…It is therefore expected that FBQM with Z -l in the feedback as well as single loop SDM with identical noise sensitivity give� by (5), are characterized by WTHD close to optimal (it would be optimal if the quantization noise was exactly white). This finding together with Bode "water bed" effect suggest that, if we want to achieve some additional objectives (such as rejection of particular frequencies), we should introduce local notches on these frequencies while keeping (1 -z -l ) as the "basis" for the sensitivity function.…”

Section: ) Minimization Of Weighted Total Harmonic Distortionmentioning

confidence: 99%

“…With classical modulator schemes switching frequency adjustment and/or external filtering are typically used. Some (limited) noise shaping can be achieved under RPWM [5]. Authors are not familiar with any modulators allowing flexible inverter noise shaping.…”

Section: Introductionmentioning

confidence: 99%

Feedback Quantizer vs Sigma-Delta Modulator for Voltage Source Inverters

Mirzaeva

Goodwin

2012

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

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The authors have recently proposed a novel modu lation strategy for Voltage Source Inverters (VSI) which utilizes feedback applied around the inverter treated as a quantizerFeedback Quantizer Modulator (FBQM). On the surface, FBQM has some similarities with Sigma Delta Modulator (SDM). However, the authors believe that FBQM is a genuine and substantial generalization of the feedback based modulation, and are presenting in this paper a comparative analysis detailing similarities as well as fundamental differences. Distributed spectrum of the inverter noise and flexible noise shaping are the two major features of FBQM which make it an attractive option in certain applications. When using FBQM of VSI as a part of a closed loop current control, current samplingis not ripple-free due to a random nature of generated voltage waveforms. In this paper the authors also propose an effective strategy to reduce the effects of non-ripple-free current sampling.The comparative study and proposed strategies are supported by detailed simulations in physics-based Saber environment, as well as experimental results.

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“…It seems to be a promising way to disperse the harmonic peaks around the carrier frequency and its multiples [1]- [3]. As a result, various researches are based on what is mentioned.…”

Section: Introductionmentioning

confidence: 99%

An Optimal Random Carrier Pulse Width Modulation Technique Based on a Genetic Algorithm

Xu¹,

Nie²,

Zhu³

2017

Journal of Power Electronics

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Since the carrier sequence is not reproducible in a period of the random carrier pulse width modulation (RCPWM) and a higher harmonic spectrum amplitude is likely to affect the quality of the power supply. In addition, electromagnetic interference (EMI) and mechanical vibration will appear. To solve these problems, this paper has proposed an optimal RCPWM based on a genetic algorithm (GA). In the optimal modulation, the range of the random carrier frequency is taken as a constraint and the reciprocal of the maximum harmonic spectrum amplitude is used as a fitness function to decrease the EMI and mechanical vibration caused by the harmonics concentrated at the carrier frequency and its multiples. Since the problems of the hardware make it difficult to use in practical engineering, this paper has presented a hardware system. Simulations and experiments show that the RCPWM is effective. Studies show that the harmonic spectrum is distributed more uniformly in the frequency domain and that there is no obvious peak in the wave spectra. The proposed method is of great value to research on RCPWM and integrated power systems (IPS).

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Shaping the Noise Spectrum in Power Electronic Converters

Cited by 83 publications

References 16 publications

Attenuation of Conducted EMI for Three-Level Inverters Through PWM

Attenuation of Conducted EMI for Three-Level Inverters Through PWM

Feedback Quantizer vs Sigma-Delta Modulator for Voltage Source Inverters

An Optimal Random Carrier Pulse Width Modulation Technique Based on a Genetic Algorithm

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